A smart water meter PCBA control board module

Abstract

This utility model discloses a smart water meter PCBA control board module, belonging to the field of circuit board technology. It includes: a circuit board installed inside the smart water meter; an electronic component module is provided on the circuit board; multiple sets of mounting bases matching the electronic component module are fixed on the circuit board; the electronic component module has corresponding pins; and the circuit board has solder pad holes for use with the pins. This utility model achieves a stable connection between the electronic component module and the circuit board through the snap-fit ​​connection between the electronic component module and the mounting base, preventing displacement between the electronic component module and the circuit board. Simultaneously, the pins on the electronic component module are connected to the solder pad holes through a connection structure, which not only avoids wear on the solder pad holes caused by pin insertion but also avoids the use of soldering for circuit connections, preventing excessive wear of the solder pad holes leading to loose connections. Furthermore, it facilitates quick replacement of the electronic component module.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, specifically to a smart water meter PCBA control board module. Background Technology

[0002] The control board module of a smart water meter PCBA is the core component for realizing the intelligence of water meters. It integrates metering, communication and control functions. Its design needs to take into account high precision, low power consumption, strong anti-interference and security. The control board integrates a variety of control modules. In the traditional production and maintenance process of smart water meter PCBA control boards, the connection between electronic component modules and circuit boards is generally carried out by "pin insertion-soldering fixation".

[0003] From a maintenance and replacement perspective, during long-term operation, some core electronic components of smart water meters (such as communication modules and metering chips) are prone to failure due to aging, lightning strikes, or electromagnetic interference, requiring replacement and repair. When using soldering connections, each replacement requires melting the solder with a hot air gun, pulling out the old pins, and then inserting the new pins for resoldering. Repeated operations can cause wear on the copper foil inside the solder pad holes and enlarge the hole diameter, easily leading to problems such as loose connections and increased contact resistance. In severe cases, it can even render the solder pad holes unusable, making the entire circuit board unusable. From an operational stability perspective, smart water meters are often installed in complex environments such as outdoor pipe wells and wall crevices, making them susceptible to deformation caused by pipe vibration, external impacts, or temperature changes. Traditional soldered connections have a rigid fixation between the pins and the solder pad holes, lacking buffer margins. When external impacts are applied directly to the solder joint, it can easily cause the pins to bend and the solder to crack, resulting in circuit interruption and affecting the normal metering and data uploading functions of the water meter. Utility Model Content

[0004] The purpose of this utility model is to provide a smart water meter PCBA control board module. Depending on the type of electronic component module, some electronic component modules are selectively connected to the circuit board through mounting brackets. At the same time, the pins are connected to the pad holes through the connection structure to achieve a stable connection with the corresponding circuit. This not only allows for the rapid replacement of electronic component modules but also ensures a stable connection, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a smart water meter PCBA control board module, comprising:

[0006] Circuit board installed inside the smart water meter;

[0007] The circuit board is provided with electronic component modules, and multiple sets of mounting brackets that match the electronic component modules are fixed on the circuit board. The electronic component modules are provided with corresponding pins, and the circuit board is provided with pad holes that mate with the pins.

[0008] The electronic component module can be detachably installed in the mounting base, and the pad hole is provided with a connection structure for use with the pin.

[0009] Preferably, the outer side of the mounting base has multiple sets of notches, and elastic buckles are fixedly installed in the notches. The outer side of the electronic component module has a slot corresponding to the elastic buckle.

[0010] Preferably, the connection structure includes a connector seat disposed in a welding hole, and the connector seat has grooves on both sides of its inner cavity. Opposing clamping blocks are slidably disposed in the inner cavity of the grooves, and the clamping blocks clamp the outside of the pin.

[0011] Preferably, the inner cavity of the slide is provided with a slot, and the inner cavity of the slot is elastically engaged with a metal spring, with the opposite side of the metal spring abutting against the outer wall of the clamping block.

[0012] Preferably, the mounting base has an insertion hole that extends inward along the through notch of the mounting base, and a support rod is inserted into the insertion hole, the support rod being fitted to the outside of the elastic buckle.

[0013] Preferably, the connector includes a cylindrical metal tube, one end of which is provided with a retainer, the retainer being attached to one side of the circuit board, and the other end of the metal tube away from the retainer being distributed outwardly and clamped to the other side of the circuit board. A limiting ring is provided on the outer side of the metal tube, and the limiting ring is clamped in the pad hole.

[0014] Preferably, the top of the card holder has an arc-shaped notch, and the center of the clamping block on the opposite side has an arc-shaped groove that fits against the outer surface of the pin.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model achieves a stable connection between the electronic component module and the circuit board by snapping the electronic component module with the mounting base, preventing displacement between the electronic component module and the circuit board. At the same time, the pins on the electronic component module are connected to the pad holes through the connection structure, which not only avoids wear on the pad holes caused by the insertion of the pins, but also avoids the use of soldering for circuit connection, preventing excessive wear of the pad holes and resulting in poor connection. It also facilitates quick replacement of the electronic component module.

[0017] 2. By designing the connector structure, this utility model not only facilitates the penetration of the solder pad hole, but also uses the card holder to snap the metal tube onto the circuit board, ensuring the stability of the connector and enabling the metal tube to connect with circuits at different levels within the circuit board. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram showing the disassembled electronic component module and circuit board of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram showing the disassembled mounting base and electronic component module of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the connector and pins of this utility model;

[0022] Figure 5 This is a cross-sectional perspective view of the connecting seat of this utility model.

[0023] The following are the labels in the diagram: 1. Circuit board; 2. Electronic component module; 3. Mounting base; 4. Pin; 5. Pad hole; 6. Connection structure; 61. Connector; 611. Metal tube; 612. Card slot; 613. Limiting ring; 62. Slide groove; 63. Clamping block; 7. Elastic buckle; 8. Card slot; 9. Slot; 10. Metal spring; 11. Insertion hole; 12. Support rod; 13. Arc-shaped notch; 14. Arc-shaped groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides, for example Figures 1-5 The smart water meter PCBA control board module shown includes:

[0026] Circuit board 1 installed inside the smart water meter;

[0027] The circuit board 1 is provided with an electronic component module 2. Multiple sets of mounting bases 3 that match the electronic component module 2 are fixed on the circuit board 1. The electronic component module 2 is provided with corresponding pins 4. The circuit board 1 is provided with solder pad holes 5 that cooperate with the pins 4.

[0028] The electronic component module 2 is detachably installed in the mounting base 3, and the pad hole 5 is provided with a connection structure 6 that mates with the pin 4.

[0029] By snapping the electronic component module 2 into the mounting base 3, the electronic component module 2 is stably connected to the circuit board 1, preventing displacement between the electronic component module 2 and the circuit board 1. At the same time, the pins 4 on the electronic component module 2 are connected to the pad holes 5 through the connection structure 6. This not only avoids wear on the pad holes 5 when the pins 4 are inserted, but also avoids the use of soldering for circuit connection, preventing excessive wear of the pad holes 5 and resulting in poor connection. It also facilitates quick replacement of the electronic component module 2.

[0030] Among them, such as Figure 3 As shown:

[0031] The mounting base 3 has multiple notches on its outer side, and elastic buckles 7 are fixedly installed in the notches. The electronic component module 2 has a slot 8 on its outer side that corresponds to the elastic buckle 7. Through the cooperation of the elastic buckle 7 and the slot 8, the electronic component module 2 is snapped into the inner side of the mounting base 3 to limit the shaking of the electronic component module 2.

[0032] Furthermore, such as Figure 4-5 As shown:

[0033] The connection structure 6 includes a connector 61 disposed in a soldering hole. The connector 61 has a sliding groove 62 on both sides of its inner cavity. The inner cavity of the sliding groove 62 is slidably provided with opposing clamping blocks 63. The clamping blocks 63 clamp the outside of the pin 4. By installing the connector 61 into the solder pad hole 5 and then inserting the pin 4, the clamping blocks 63 clamp and fix the pin 4, ensuring the stability of the connection between the connector 61 and the pin 4 and ensuring the continuity of the circuit.

[0034] Preferred, such as Figure 5 As shown:

[0035] The inner cavity of the slide groove 62 is provided with a slot 9, and a metal spring 10 is elastically engaged in the inner cavity of the slot 9. The opposite side of the metal spring 10 is attached to the outer wall of the clamping block 63. By engaging the metal spring 10 in the slot 9, the metal spring 10 is bent to provide elastic support for the clamping block 63, so that the clamping block 63 is in contact with the pin 4.

[0036] It is worth noting that, such as Figure 3 As shown:

[0037] The mounting base 3 has an insertion hole 11. The insertion hole 11 extends inward along the through notch of the mounting base 3. A support rod 12 is inserted into the insertion hole 11. The support rod 12 fits against the outside of the elastic buckle 7. By inserting the support rod 12 into the insertion hole 11, the support rod 12 limits the elastic buckle 7 and prevents the elastic buckle 7 from elastically rebounding under the action of external force, which would cause the electronic component module 2 to shake.

[0038] In a further preferred embodiment, such as Figure 5 As shown:

[0039] The connector 61 includes a cylindrical metal tube 611. One end of the metal tube 611 is provided with a retainer 612, which is attached to one side of the circuit board 1. The other end of the metal tube 611 away from the retainer 612 is outwardly and distributedly engaged with the other side of the circuit board 1. A limiting ring 613 is provided on the outer side of the metal tube 611, which is engaged in the pad hole 5. By setting the structure of the connector 61, it is not only convenient to pass through the pad hole 5, but also the retainer 612 and the metal tube 611 are engaged with the circuit board 1 to ensure the stability of the connector 61. At the same time, the metal tube 611 is connected to the circuits on different levels in the circuit board 1.

[0040] In addition, such as Figure 4-5 As shown:

[0041] The top of the card holder 612 is provided with an arc-shaped notch 13, and the center of the opposite side of the clamping block 63 is provided with an arc-shaped groove 14 that fits with the outer surface of the pin 4. The arc-shaped notch 13 guides the pin 4 and prevents the pin 4 from being misaligned and bent. At the same time, the arc-shaped groove 14 increases the contact area between the clamping block 63 and the pin 4 to prevent incomplete connection.

[0042] In practical use, when replacing some electronic component modules 2 on circuit board 1, remove the support rod 12 inside the socket 11, then pry open the elastic clip 7 to separate the elastic clip 7 from the electronic component module 2. Then, move the electronic component module 2 outward from the circuit board 1, and move the pin 4 outward from the connector 61 to complete the removal of the electronic component module 2. Insert the new electronic component module 2 into the connector 61 inside the pad hole 5 in the correct orientation, insert the pin 4 into the arc groove 14, push the clamping block 63 to both sides, and squeeze... The metal spring 10 makes the pin 4 fit tightly against the clamping block 63. Then the pin 4 is inserted into the connector 61, and at the same time the electronic component module 2 is moved into the mounting base 3. When the electronic component module 2 is pressed into the mounting base 3, the elastic buckle 7 changes shape and engages with the slot 8 on the electronic component module 2 to fix the electronic component module 2. Then the support rod 12 is inserted into the socket 11. The support rod 12 supports the elastic buckle 7 to prevent the electronic component module 2 from moving out of the mounting base 3, thus completing the replacement of the electronic component module 2 that does not require soldering.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart water meter PCBA control board module, characterized in that, include: Circuit board (1) installed inside the smart water meter; The circuit board (1) is provided with an electronic component module (2), and multiple sets of mounting bases (3) that match the electronic component module (2) are fixed on the circuit board (1). The electronic component module (2) is provided with corresponding pins (4), and the circuit board (1) is provided with pad holes (5) that cooperate with the pins (4). The electronic component module (2) is detachably installed in the mounting base (3), and the pad hole (5) is provided with a connection structure (6) that works with the pin (4).

2. The intelligent water meter PCBA control board module according to claim 1, characterized in that: The mounting base (3) has multiple notches on its outer side, and elastic buckles (7) are fixedly installed in the notches. The electronic component module (2) has a slot (8) on its outer side that corresponds to the elastic buckles (7).

3. The intelligent water meter PCBA control board module according to claim 1, characterized in that: The connection structure (6) includes a connector (61) disposed in the welding hole. The connector (61) has a sliding groove (62) on both sides of its inner cavity. The inner cavity of the sliding groove (62) is slidably provided with opposing clamping blocks (63), which clamp the outer side of the pin (4).

4. The intelligent water meter PCBA control board module according to claim 3, characterized in that: The inner cavity of the slide (62) is provided with a slot (9), and the inner cavity of the slot (9) is elastically engaged with a metal spring (10). The opposite side of the metal spring (10) is attached to the outer wall of the clamping block (63).

5. The intelligent water meter PCBA control board module according to claim 1, characterized in that: The mounting base (3) has an insertion hole (11) which extends inward along the notch of the mounting base (3). A support rod (12) is inserted into the insertion hole (11) and the support rod (12) fits against the outside of the elastic buckle (7).

6. The intelligent water meter PCBA control board module according to claim 3, characterized in that: The connector (61) includes a cylindrical metal tube (611), one end of which is provided with a retainer (612), the retainer (612) is attached to one side of the circuit board (1), and the end of the metal tube (611) away from the retainer (612) is outwardly and distributedly attached to the other side of the circuit board (1). A limiting ring (613) is provided on the outside of the metal tube (611), and the limiting ring (613) is attached to the pad hole (5).

7. The intelligent water meter PCBA control board module according to claim 6, characterized in that: The top of the card holder (612) is provided with an arc-shaped notch (13), and the center of the clamping block (63) on the opposite side is provided with an arc-shaped groove (14) that fits against the outer surface of the pin (4).

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