Binding post assembly of ultrasonic gas meter

Abstract

The utility model discloses an ultrasonic gas meter binding post assembly which comprises a binding post body, a needle-shaped terminal, a waterproof connector needle-shaped male end, a circuit board, a valve signal female end and a metering module signal female end, the circuit board is arranged in the binding post body, the needle-shaped terminal and the waterproof connector needle-shaped male end are both arranged on the circuit board, and the valve signal female end is connected with the metering module signal female end. The number of the waterproof connector needle-shaped male ends is two, the two waterproof connector needle-shaped male ends are arranged on the lower surface of the circuit board, and the valve signal female end and the metering module signal female end are detachably connected with any waterproof connector needle-shaped male end to achieve function transmission. According to the ultrasonic gas meter binding post assembly, connection of an external signal line can be omitted, electromagnetic interference is reduced, and the anti-interference performance of an ultrasonic gas meter is improved; the binding post is simple in structure, the binding post body and the circuit board are injection-molded, and connection is stable; meanwhile, a plurality of sealing grooves are formed and used for sealing the binding posts, the controller and the gas meter shell, and the connection reliability is high.

Description

Technical Field

[0001] The utility model relates to an ultrasonic gas meter terminal assembly, belonging to the technical field of gas meter accessories. Background Art

[0002] Ultrasonic gas meter is a gas meter metering device that realizes velocity metering through a built-in metering module. All internal metering methods are completed electronically. All metering methods transmit the measured data to the main board outside the shell through the chip in the metering module for processing and then display. The metering module usually has 5 signal output lines. In addition, the ultrasonic gas meter is basically equipped with a cut-off valve and a temperature and pressure sensor chip, and there are 5 signal lines for the valve and sensor. Therefore, 10 data lines need to be led out from the inside of the shell. Conventionally, the signal line is led out from the inside through 2 10-diameter terminals. Then it is connected to the main board through a connecting line. However, external electromagnetic interference can easily interfere with the internal metering module through this signal line, thereby affecting the metering error of the ultrasonic gas meter. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the metering module of the existing ultrasonic gas meter is easily interfered by external electromagnetic interference through the signal line, which affects the metering error of the ultrasonic gas meter.

[0004] In order to solve the above technical problems, the utility model provides an ultrasonic gas meter terminal assembly, which can cancel the connection of external signal lines, reduce electromagnetic interference, and improve the anti-interference performance of the ultrasonic gas meter.

[0005] In order to achieve the above technical objectives and the above technical effects, this application is implemented through the following technical solutions:

[0006] An ultrasonic gas meter terminal assembly comprises a terminal body, a pin terminal, a waterproof connector pin male end, a circuit board, a valve signal female end and a metering module signal female end. The circuit board is arranged in the terminal body, the pin terminal and the waterproof connector pin male end are both arranged on the circuit board, two waterproof connector pin male ends are provided, and the two waterproof connector pin male ends are respectively arranged on the lower surface of the circuit board. The valve signal female end and the metering module signal female end are respectively detachably connected to any of the waterproof connector pin male ends to realize function transmission.

[0007] Preferably, a slot one is provided on the upper surface of the terminal body, and two slots two are provided on the left and right sides of the lower surface of the terminal body, wherein the slot one and the slot two are both protruding from the terminal body, the pins of the needle terminal are facing upward and located in the slot one, and the pins of the two needle male ends of the waterproof connector are facing downward and are located in the slot two.

[0008] Furthermore, a protection ring is provided on an inner wall of the notch to prevent the pin-shaped terminal from being deformed by being bumped during the rotation process.

[0009] Preferably, the valve signal female end includes a female end N pin 1, a plastic part 1 and a signal line 1, the female end N pin 1 is electrically connected to the signal line 1, and the connection is covered with the plastic part 1 to achieve fixation, and the female end N pin 1 is plugged and fixed with the needle-shaped male end of the waterproof connector.

[0010] Furthermore, the signal female end of the metering module includes female end N pin 2, plastic part 2 and signal line 2. The female end N pin 2 is electrically connected to signal line 2, and the connection is covered with plastic part 2 to achieve fixation. The female end N pin 2 is plugged and fixed to the needle-shaped male end of the waterproof connector.

[0011] Furthermore, the first plastic part and the second plastic part are both filled with epoxy glue.

[0012] Preferably, a sealing groove is provided on the outer side wall of the terminal body for sealing with an external intelligent controller.

[0013] Furthermore, the sealing groove is arranged along an outer side wall of the terminal body.

[0014] Furthermore, sealing grooves 2 are provided at the connection points between the two notches 2 and the terminal body for sealing with the ultrasonic gas meter housing.

[0015] Preferably, the terminal body is covered with a plastic shell base.

[0016] The utility model provides an ultrasonic gas meter terminal assembly, which has the following advantages:

[0017] When the utility model is used, the connection of the external signal line can be cancelled, electromagnetic interference can be reduced, and the anti-interference performance of the ultrasonic gas meter can be improved; the terminal has a simple structure, the terminal body and the circuit board are injection molded, and the connection is stable; at the same time, a plurality of sealing grooves are provided for sealing between the terminal and the controller and the gas meter casing, and the connection reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an axial schematic diagram of the utility model mainly showing the terminal structure of the ultrasonic gas meter;

[0019] Figure 2 This is a cross-sectional schematic diagram of the utility model mainly showing the structure of the ultrasonic gas meter terminal;

[0020] Figure 3 It is a cross-sectional schematic diagram of the utility model mainly showing the overall structure of the terminal body;

[0021] Figure 4It is an axial schematic diagram of the overall structure of an ultrasonic gas meter terminal assembly of the utility model;

[0022] Figure 5 This is a full cross-sectional schematic diagram mainly showing the overall structure of the valve signal female end of the utility model;

[0023] Figure 6 This is a full cross-sectional schematic diagram of the overall structure of the valve signal female end filled with epoxy glue, which is mainly reflected in the utility model;

[0024] Figure 7 This is a full cross-sectional schematic diagram of the overall structure of the signal female end of the metering module mainly embodies the utility model;

[0025] Figure 8 This is a full cross-sectional schematic diagram of the overall structure of the metering module signal female end filled with epoxy glue, which is mainly reflected in the utility model;

[0026] Fig. 9 This is the application adaptation diagram of the ultrasonic gas meter terminal of the utility model;

[0027] In the figure:

[0028] 1-terminal body; 2-pin terminal; 3-waterproof connector pin male end; 4-circuit board; 5-valve signal female end; 51-female end N pin one; 52-plastic part one; 53-signal line one; 6-metering module signal female end; 61-female end N pin two; 62-plastic part two; 63-signal line two; 7-slot one; 8-slot two; 9-protective ring; 10-sealing groove one; 11-sealing groove two; 12-epoxy glue; 13-plastic shell base. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technical personnel in the field without creative work are within the scope of protection of the present utility model.

[0030] Reference Figure 1-Figure 4, an ultrasonic gas meter terminal assembly, including a terminal body 1, a pin terminal 2, a waterproof connector pin male end 3, a circuit board 4, a valve signal female end 5 and a metering module signal female end 6, the pin terminal 2 and the waterproof connector pin male end 3 are both N pins, the pin terminal 2 is welded on the circuit board 4 with the pin facing up, there are two waterproof connector pin male ends 3, which are respectively welded on the left and right sides of the circuit board 4 with the pins facing down, and then the completed pin terminal 2, the waterproof connector pin male end 3 and the circuit board 4 are injection molded into the terminal body 1 by an integral injection molding method, and the valve signal female end 5 and the metering module signal female end 6 are connected through the waterproof connector pin male ends 3 on the left and right sides of the terminal body 1 to realize function transmission.

[0031] The upper surface of the terminal body 1 is processed with a notch 7, and the lower surface of the terminal body 1 is symmetrically processed with two notches 8 on the left and right sides. The notch 1 and the notch 2 8 are both protruding from the terminal body 1. The position of the pin terminal 2 on the circuit board 4 corresponds to the position of the notch 1 7, and the positions of the two waterproof connector pin male terminals 3 on the circuit board 4 correspond to the positions of the notch 2 8. The above-mentioned assembly is injection molded in the terminal body 1 so that the pins of the pin terminal 2 are located in the notch 1 7, and the pins of the waterproof connector pin male terminal 3 are located in the notch 2 8.

[0032] Reference Figure 2 and Figure 3 In a further embodiment, a rubber protective ring 9 is installed on the inner wall of the notch 7 to prevent the pin terminal 2 from being deformed during the rotation process. A sealing groove 10 is processed along the outer wall of the terminal body 1, and is sealed by the sealing ring and the external intelligent controller. A sealing groove 11 is opened along the interface of the two notches 8 and the terminal body 1, and is sealed by the sealing ring and the ultrasonic gas meter shell.

[0033] Reference Figure 5 and Figure 6 The valve signal female end 5 includes a female end N pin 51, a plastic part 52 and a signal line 53. The female end N pin 51 and the signal line 53 are welded. The connection between the female end N pin 51 and the signal line 53 is injection molded to form a plastic part 52 and epoxy glue 12 is filled into the injection molded part 52 at the same time, and then the female end N pin 51 and the signal line 53 are connected as a whole through the plastic part 52. The epoxy glue 12 is used to fill and protect the electronic components from environmental factors and provide waterproof and dustproof protection at the connection. When in use, the female end N pin 51 is plugged into the needle-shaped male end 3 of the waterproof connector.

[0034] Reference Figure 7 and Figure 8The metering module signal female end 6 includes a female end N pin 2 61, a plastic part 2 62 and a signal line 2 63. The female end N pin 2 61 and the signal line 2 63 are welded. The connection between the female end N pin 2 61 and the signal line 2 63 is injection molded to form a plastic part 2 62 and epoxy glue 12 is filled into the injection molded part 2 62 at the same time of injection molding, and then the female end N pin 2 61 and the signal line 2 63 are connected as a whole through the plastic part 2 62. The epoxy glue 12 is used to fill and protect the electronic components from environmental factors and provide waterproof and dustproof protection at the connection. When in use, the female end N pin 2 61 is plugged into the needle-shaped male end 3 of the waterproof connector.

[0035] Reference Fig. 9 A plastic shell base 13 is installed outside the terminal body 1, so that the plastic shell base 13 plays a waterproof and protective role on the terminal body 1.

[0036] The above is only a preferred embodiment of the utility model, and is not any formal or substantial limitation of the utility model. It should be pointed out that ordinary technicians in this technical field can make some improvements and supplements without departing from the utility model, and these improvements and supplements should also be regarded as the protection scope of the utility model. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the utility model, which are all equivalent embodiments of the utility model; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. An ultrasonic gas meter terminal assembly, characterized in that: The invention comprises a terminal body (1), a pin terminal (2), a waterproof connector pin male end (3), a circuit board (4), a valve signal female end (5) and a metering module signal female end (6); the circuit board (4) is arranged in the terminal body (1); the pin terminal (2) and the waterproof connector pin male end (3) are both arranged on the circuit board (4); two waterproof connector pin male ends (3) are provided, and the two waterproof connector pin male ends (3) are respectively arranged on the lower surface of the circuit board (4); the valve signal female end (5) and the metering module signal female end (6) are respectively detachably connected to any one of the waterproof connector pin male ends (3) to realize function transmission.

2. An ultrasonic gas meter terminal assembly according to claim 1, characterized in that: The upper surface of the terminal body (1) is provided with a notch 1 (7), and the lower surface of the terminal body (1) is provided with two notches 2 (8) on the left and right sides, the notch 1 (7) and the notch 2 (8) are both protruding from the terminal body (1), the pins of the pin terminal (2) are upwardly located in the notch 1 (7), and the pins of the two waterproof connector pin male terminals (3) are downwardly located in the notch 2 (8).

3. An ultrasonic gas meter terminal assembly as claimed in claim 2, characterized in that: A protective ring (9) is provided on the inner wall of the slot 1 (7) to prevent the pin-shaped terminal (2) from being deformed by collision during the rotation process.

4. The ultrasonic gas meter terminal assembly according to claim 1, characterized in that: The valve signal female end (5) comprises a female end N pin 1 (51), a plastic part 1 (52) and a signal line 1 (53); the female end N pin 1 (51) is electrically connected to the signal line 1 (53), and the connection portion is covered with the plastic part 1 (52) to achieve fixation; the female end N pin 1 (51) is plugged and fixed to the waterproof connector needle male end (3).

5. An ultrasonic gas meter terminal assembly as claimed in claim 4, characterized in that: The metering module signal female end (6) comprises a female end N pin 2 (61), a plastic part 2 (62) and a signal line 2 (63); the female end N pin 2 (61) is electrically connected to the signal line 2 (63), and the connection portion is covered with the plastic part 2 (62) to achieve fixation; the female end N pin 2 (61) is plugged and fixed to the waterproof connector needle male end (3).

6. An ultrasonic gas meter terminal assembly as claimed in claim 5, characterized in that: The first plastic part (52) and the second plastic part (62) are both filled with epoxy glue (12).

7. The ultrasonic gas meter terminal assembly according to claim 1, characterized in that: A sealing groove (10) is provided on the outer side wall of the terminal body (1) for sealing with an external intelligent controller.

8. An ultrasonic gas meter terminal assembly as claimed in claim 7, characterized in that: The sealing groove 1 (10) is arranged along the outer wall of the terminal body (1).

9. An ultrasonic gas meter terminal assembly as claimed in claim 2, characterized in that: The connection between the two notches (8) and the terminal body (1) is provided with a sealing groove (11) for sealing with the ultrasonic gas meter housing.

10. The ultrasonic gas meter terminal assembly according to claim 1, characterized in that: The terminal body (1) is provided with a plastic housing base (13) on its outer shell.

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