Buckle type connecting device

Abstract

The utility model discloses a buckle type connecting device which comprises a plastic connecting column, an upper wire, a lower wire, a first limiting ring and a second limiting ring. According to the sealing device, the limiting part is limited through the first limiting plate and the second limiting plate, then the first ring groove plate, the second ring groove plate, the limiting part and the sealing part are matched to form the O-shaped ring groove, and the first limiting plate and the second limiting plate are matched through the buckle; therefore, the plastic connecting column can be quickly spliced to realize the limiting of the plastic connecting column and the forming of the O-shaped ring groove, so that the O-shaped ring can be limited in the O-shaped ring groove in the mounting process, and the sealing performance is greatly guaranteed. And the lower lead is innovatively bent and protected, so that the lead can be effectively prevented from being broken in the installation process. And the waste of manpower and material resources caused by wire breakage can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas meter electronically controlled built-in valve technology, and in particular to a snap-fit ​​connection device. Background Technology

[0002] With the improvement of socioeconomic levels and changes in lifestyles, clean energy sources such as natural gas have entered thousands of households. Gas meters, which are used for billing and controlling the flow of natural gas, have also become commonplace. The flow of natural gas is primarily controlled by an internal electronically controlled valve within the gas meter. However, the power and signal lines for this valve typically need to be routed from inside the meter before connecting to the control board. A connection post assembly is usually used for sealing. Using a traditional structure with rubber nails and wires for sealing may lead to gas leaks.

[0003] If the connecting post is directly injection molded using the wire, a nut needs to be tightened on the side of the connecting post extending from the gas meter, while simultaneously pressing the O-ring at the root of the thread to achieve a seal. Because the thread needs to be directly injection molded, under normal demolding conditions, the mold core moves left and right perpendicular to the thread for demolding. However, the O-ring groove is cut into the plane at the root of the thread, which interferes with the mold's movement direction during demolding, making demolding impossible. Since the injection-molded connecting post has threads, it's impossible to simultaneously create the O-ring groove under conventional demolding conditions. Using rotary demolding would lead to a complex mold, increasing mold opening and component manufacturing costs.

[0004] Therefore, it is necessary to develop a snap-fit ​​connection device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to design a snap-fit ​​connection device to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A snap-fit ​​coupling device, comprising:

[0008] Plastic connecting post; the plastic connecting post includes a limiting part and a cylindrical sealing part; the sealing part is installed in the middle of the first end of the limiting part;

[0009] Top conductor;

[0010] The lower wire is connected to the internal wire of the sealing part, and the lower wire is connected to the internal wire of the limiting part.

[0011] The first limiting ring includes a first groove plate and a first limiting plate. The first limiting plate is formed into a U-shaped plate structure, and the middle part of the first limiting plate is formed into a shape that fits with the outer wall of the limiting part. Fastening plugs are provided at both ends of the first limiting plate, and the middle part of the first limiting plate is in contact with the first side of the limiting part.

[0012] The second limiting ring includes a second grooved plate and a second limiting plate. The second limiting plate is formed into a U-shaped plate structure, and the middle part of the second limiting plate is formed into a shape that fits with the outer wall of the limiting part. Positioning grooves are provided at both ends of the second limiting plate. The middle part of the second limiting plate fits against the second side of the limiting part. Two fastening plugs are respectively fastened to the two positioning grooves. The first grooved plate and the second grooved plate are both formed into U-shaped structures. The inner sides of the first grooved plate and the second grooved plate are both formed into semi-circular notches of the same diameter. The first grooved plate is installed on the upper end of the first limiting plate, and the second grooved plate is installed on the upper end of the second limiting plate. The semi-circular notches of the first grooved plate and the second grooved plate extending inward are placed on the upper end of the limiting part, and O-ring grooves are formed between the two semi-circular notches and the outer wall of the sealing part.

[0013] The beneficial effects of this utility model are as follows:

[0014] Compared to the difficulty in demolding traditional O-ring grooves in injection-molded connecting columns, this application divides the connecting column into multiple parts, which are injection-molded separately and then assembled together (plastic connecting column, second limiting ring, first limiting ring). This division of the traditional connecting column into multiple parts allows each part to move in two directions for demolding, reducing mold complexity and production costs while shortening the production cycle. In this application, the limiting part is first limited by the first and second limiting plates. Then, the O-ring groove is formed by the cooperation of the first and second limiting plates, the limiting part, and the sealing part. The first and second limiting plates are connected by a snap-fit ​​mechanism, allowing for rapid assembly to limit the plastic connecting column and form the O-ring groove. This ensures the O-ring is confined within the groove during installation, greatly guaranteeing a tight seal. Furthermore, the innovative bending protection of the lower wire effectively prevents wire breakage during installation, significantly reducing the waste of manpower and resources caused by wire breakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of this application. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the structure of this application. Figure 3 ;

[0018] Figure 4 This is an exploded view of this application.

[0019] Legend: 1-Plastic connecting post, 2-Upper wire, 3-Lower wire, 4-Limiting part, 5-Sealing part, 6-Guide hole, 7-Second limiting ring, 8-First limiting ring, 9-O-ring groove, 10-First groove plate, 11-Fastening plug, 12-First limiting plate, 13-Second groove plate, 14-Second limiting plate, 15-Positioning groove, 16-Base plate, 17-Wire cover, 18-Guide post, 19-Interval opening. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figure 1-4 As shown, a snap-fit ​​connecting device includes:

[0028] Plastic connecting post 1; Plastic connecting post 1 includes a limiting part 4 and a cylindrical sealing part 5; The sealing part 5 is installed in the middle of the first end of the limiting part 4;

[0029] Upper conductor 2;

[0030] Lower wire 3; Upper wire 2 is connected to the internal wire of sealing part 5, and lower wire 3 is connected to the internal wire of limiting part 4;

[0031] First limiting ring 8; First limiting ring 8 includes first groove plate 10 and first limiting plate 12; First limiting plate 12 is formed into a U-shaped plate structure, and the middle part of the first limiting plate 12 is formed into a shape that fits with the outer wall of the limiting part 4 for limiting. Fastening plugs 11 are provided at both ends of the first limiting plate 12, and the middle part of the first limiting plate 12 is attached to the first side of the limiting part 4. Fastening plugs 11 are provided below both ends of the first limiting plate 12 and extend outward. An interval opening 19 is provided between the fastening plug 11 and the body of the first limiting plate 12 so that the fastening plug 11 can deform up and down. The head of the fastening plug 11 is formed into a hook-shaped structure. Correspondingly, the positioning groove 15 is also formed into a hook-shaped groove.

[0032] The second limiting ring 7 includes a second groove plate 13 and a second limiting plate 14. The second limiting plate 14 is formed into a U-shaped plate structure, and the middle part of the second limiting plate 14 is formed into a shape that fits with the outer wall of the limiting part 4. Positioning grooves 15 are provided at both ends of the second limiting plate 14. The middle part of the second limiting plate 14 fits against the second side of the limiting part 4. Two fastening plugs 11 are respectively fastened to the two positioning grooves 15. The first groove plate 10 and the second groove plate 13 are both formed into U-shaped structures. The inner sides of the first groove plate 10 and the second groove plate 13 are both formed into semi-circular notches with the same diameter. The first groove plate 10 is installed on the upper end of the first limiting plate 12, and the second groove plate 13 is installed on the upper end of the second limiting plate 14. The semi-circular notches of the first groove plate 10 and the second groove plate 13 extending inward are placed on the upper end of the limiting part 4, and O-ring grooves 9 are formed between the two semi-circular notches and the outer wall of the sealing part 5.

[0033] like Figure 4 As shown, the limiting part 4 is formed into a regular hexagonal prism structure. Correspondingly, the first limiting plate 12 and the second limiting plate 14, when combined, form a regular hexagonal frame structure. In this embodiment, both the first limiting plate 12 and the second limiting plate 14 are formed to include four adjacent sides, with the sides at both ends being parallel to each other and each only half the length of the other two sides. Correspondingly, the two fastening plugs 11 are parallel to each other.

[0034] like Figure 4 As shown, two parallel guide holes 6 are provided on the first and second sides of the limiting part 4. Correspondingly, two parallel guide posts 18 are installed on the inner side of the first limiting plate 12 and the inner side of the second limiting plate 14. The two guide posts 18 on the first limiting plate 12 are respectively inserted into the two guide holes 6 on the first side of the limiting part 4 for guiding and fitting installation. The two guide posts 18 on the second limiting plate 14 are respectively inserted into the two guide holes 6 on the second side of the limiting part 4 for guiding and fitting installation.

[0035] In this application, both the first limiting ring 8 and the second limiting ring 7 are made of polyoxymethylene (POM), a material with inherent toughness. When the first limiting ring 8 and the second limiting ring 7 are engaged, the guide post 18 is inserted along the guide hole 6, and the fastening plug 11 and the positioning groove 15 fit tightly together. After assembly, the degree of freedom of the limiting rings is completely restricted, preventing them from moving up, down, left, or right. By assembling the limiting rings, an O-ring groove 9 is formed between the first ring groove plate 10, the second ring groove plate 13, and the injection-molded connecting post.

[0036] like Figure 2-4As shown, a base plate 16 is connected to the lower end of the second limiting plate 14. The first end of the base plate 16 is positioned outside the middle of the second end of the limiting part 4. An arc-shaped wire cover 17 is installed on the first end of the base plate 16. One end of the lower wire 3 passes through the arc-shaped wire cover 17, and after being bent at 90°, it connects to the internal wire of the limiting part 4. This embodiment is to solve the technical problem that the lower wire of the injection-molded connecting column is exposed and easily broken during installation, thus losing its conductivity. This embodiment effectively protects the lower wire 3, preventing the wire from breaking during installation.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A snap-fit ​​connecting device, characterized in that, include: Plastic connecting posts; The plastic connecting post includes a limiting part and a cylindrical sealing part; The sealing part is installed at the middle of the first end of the limiting part; Top conductor; Down conductor; The upper wire is connected to the internal wire of the sealing part, and the lower wire is connected to the internal wire of the limiting part; The first limiting ring includes a first groove plate and a first limiting plate. The first limiting plate is formed into a U-shaped plate structure, and the middle part of the first limiting plate is formed into a shape that fits with the outer wall of the limiting part. Fastening plugs are provided at both ends of the first limiting plate, and the middle part of the first limiting plate is in contact with the first side of the limiting part. The second limiting ring includes a second grooved plate and a second limiting plate. The second limiting plate is formed into a U-shaped plate structure, and the middle part of the second limiting plate is formed into a shape that fits with the outer wall of the limiting part. Positioning grooves are provided at both ends of the second limiting plate. The middle part of the second limiting plate fits against the second side of the limiting part. Two fastening plugs are respectively fastened to the two positioning grooves. The first grooved plate and the second grooved plate are both formed into U-shaped structures. The inner sides of the first grooved plate and the second grooved plate are both formed into semi-circular notches of the same diameter. The first grooved plate is installed on the upper end of the first limiting plate, and the second grooved plate is installed on the upper end of the second limiting plate. The semi-circular notches of the first grooved plate and the second grooved plate extending inward are placed on the upper end of the limiting part, and O-ring grooves are formed between the two semi-circular notches and the outer wall of the sealing part.

2. The snap-fit ​​connecting device according to claim 1, characterized in that, The limiting part is formed into a regular hexagonal prism structure, and correspondingly, the first limiting plate and the second limiting plate are combined to form a regular hexagonal frame structure.

3. The snap-fit ​​connecting device according to claim 2, characterized in that, The two fastening plugs are parallel to each other.

4. The snap-fit ​​connecting device according to claim 1, characterized in that, Two parallel guide holes are provided on the first and second sides of the limiting part. Correspondingly, two parallel guide posts are installed on the inner side of the first limiting plate and the inner side of the second limiting plate. The two guide posts on the first limiting plate are respectively inserted into the two guide holes on the first side of the limiting part for guiding and fitting installation. The two guide posts on the second limiting plate are respectively inserted into the two guide holes on the second side of the limiting part for guiding and fitting installation.

5. A snap-fit ​​connecting device according to claim 1, characterized in that, The lower end of the second limiting plate is connected to a base plate. The first end of the base plate is placed outside the middle of the second end of the limiting part. An arc-shaped wire cover is installed on the first end of the base plate. One end of the lower wire is inserted into the arc-shaped wire cover, and then bent at 90° to connect with the internal wire of the limiting part.

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