Snap-on connection structure for gas alarm connecting wire

Abstract

This utility model belongs to the field of gas equipment technology, specifically disclosing a snap-fit ​​connection structure for a gas alarm connection cable. It includes a housing and a connector. The housing has a mounting hole for fitting the connector, and the mounting hole has an internal thread. The connector includes a first external thread portion that connects to the housing and is adapted to the mounting hole. The connector also includes a limiting shoulder fixedly connected to the first external thread portion. The limiting shoulder is larger than the outer diameter of the first external thread portion. An upwardly extending limiting buckle is fixedly provided on the end face of the first external thread portion away from the limiting shoulder, so that when the connector is screwed to the position where the limiting shoulder abuts against the housing, the lower edge of the limiting buckle abuts against the upper edge of the housing. This utility model reduces the installation materials for the gas alarm connection cable, simplifies the installation structure and steps, and ensures the sealing performance of the gas alarm connection cable. It is suitable for connecting gas alarm connection cables to meter housings.

Description

Technical Field

[0001] This utility model belongs to the field of gas equipment technology, specifically a snap-fit ​​connection structure for a gas alarm connection wire. Background Technology

[0002] During the production process, the gas alarm connection wire of a gas meter with gas alarm function needs to be fixedly installed on the meter housing. Because it has a gas leak alarm function, it needs to be installed in a sealed manner.

[0003] like Figure 1 As shown, the current connection structure of the gas alarm wiring includes a housing 1 (partial) and a connector 11 with threads at both ends. The connector 11 has an integrally formed limiting shoulder 5 for fixing a sealing gasket 13 in the middle, and also includes a hexagonal nut 12 and a sealing gasket 13. A through hole adapted to the connector 11 is provided on the housing 1 of the meter. During installation, the sealing gasket 13 is first placed on the connector 11 from top to bottom and limited by the limiting shoulder 5. Then, the connector 11 is passed through the through hole on the housing 1 from bottom to top. Finally, glue is applied to the bottom of the hexagonal nut 12, and the hexagonal nut 12 is placed on the upper end of the connector 11 and tightened, so that the hexagonal nut 12 and the sealing gasket 13 together clamp the housing 1. Although this connection structure can ensure sealing, it uses more materials and the installation process is relatively complex.

[0004] Chinese utility model patent with authorization announcement number CN209216263U discloses an alarm port installation structure and a gas device. The alarm socket is snapped onto the mounting base by a horizontal snap-fit ​​structure, and a limiting structure is set to limit the insertion depth of the alarm. The above-mentioned alarm port installation structure uses less material and is easy to install, but the structure is relatively complex and it is difficult to guarantee the sealing. Utility Model Content

[0005] To address the aforementioned shortcomings in the existing technology, this utility model aims to provide a snap-fit ​​connection structure for gas alarm connection cables, thereby reducing the installation materials for gas alarm connection cables, simplifying the installation structure and steps, and ensuring installation sealing.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A snap-fit ​​connection structure for a gas alarm connection wire includes a housing and a connector. The housing has an installation hole for fitting the connector, and the installation hole has an internal thread. The connector includes a first external thread portion for connecting to the housing and adapted to the installation hole. The connector also includes a limiting shoulder fixedly connected to the first external thread portion. The size of the limiting shoulder is larger than the outer diameter of the first external thread portion. The characteristic feature is that an upwardly extending limiting buckle is fixedly provided on the end face of the first external thread portion away from the limiting shoulder, so that when the connector is screwed to the position where the limiting shoulder abuts against the housing, the lower edge of the limiting buckle abuts against the upper edge of the housing.

[0007] As a limitation of this utility model: two limiting buckles are symmetrically arranged.

[0008] As a limitation of this utility model: the limiting buckle includes an upright part fixedly connected to the end face of the first external thread part along the height direction, and also includes a buckle part fixedly connected to the end of the upright part and extending outward. When the connector is screwed to the position where the limiting shoulder abuts against the housing, the lower edge of the buckle part abuts against the upper edge of the housing.

[0009] As a limitation of this utility model: the distance between the outer edges of the two vertical limiting buckles is less than the minor diameter of the first external thread, and the distance between the outer edges of the two limiting buckle buckles is greater than the inner diameter of the mounting hole.

[0010] As a limitation of this utility model: the outer side of the upper end of the buckle part is a slope.

[0011] As a limitation of this utility model: the end of the limiting shoulder away from the first external thread is fixedly connected to a second external thread that is coaxial with the first external thread; a connecting wire is provided through the connector; the connecting wire includes a wire portion extending from the upper end of the first external thread and a connector portion for connecting to a gas alarm; the second external thread is a hollow structure; and the connector portion is disposed in the hollow structure of the second external thread.

[0012] As a limitation of this utility model: the connector portion includes two connectors that are spaced apart and extend downwards, and the connecting lines of the two connectors are parallel to the connecting lines of the two limiting buckles.

[0013] As a limitation of this utility model: a connecting seat for connecting to the connector is fixed on the housing, the thickness of the connecting seat is greater than the thickness of the housing, and the mounting hole is provided on the connecting seat.

[0014] As a limitation of this utility model: the top edge of the connecting seat is provided with a limiting groove that is adapted to the limiting buckle.

[0015] As a limitation of this utility model: the outer edge of the limiting shoulder is a hexagonal structure.

[0016] By adopting the above technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows:

[0017] This utility model connects the alarm wiring to the housing using a combination of threads and snap-fit ​​mechanisms. First, since the first external thread, the limiting snap-fit, the limiting shoulder, and the second external thread are integrated into a single structure, no nuts, sealing rings, or other materials are required during installation, reducing the amount of materials needed. Second, the combination of threads and snap-fit ​​mechanisms allows for installation simply by tightening, simplifying the installation process compared to installing gaskets and applying adhesive. Finally, the threads provide a seal, and the locking snap-fit ​​mechanism, when engaged with the limiting slot, prevents loosening, ensuring a tight seal during installation compared to a simple snap-fit ​​structure.

[0018] The connecting lines of the two connectors and the connecting lines of the two limiting buckles of this utility model are parallel to each other, so that the arrangement of the two connectors is consistent with the arrangement of the two limiting buckles. In the design, the arrangement direction of the two limiting slots is consistent with the target arrangement direction of the connectors. This can ensure that when the connectors are installed in place, the direction of the connectors meets the direction requirements when connecting to the gas alarm below, without the need to adjust the direction of the connectors.

[0019] In summary, this utility model reduces the installation materials for gas alarm connection wires, simplifies the installation structure and steps of gas alarm connection wires, and ensures the sealing performance of gas alarm connection wires during installation. It is suitable for connecting gas alarm connection wires to meter housings. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the existing technology;

[0022] Figure 2 This is a perspective view of an embodiment of the present utility model;

[0023] Figure 3 This is an installation diagram of an embodiment of the present utility model;

[0024] Figure 4 for Figure 2 A cross-sectional view of the AA plane;

[0025] Figure 5 This is a perspective view of the housing in an embodiment of the present utility model.

[0026] In the diagram: 1-Housing, 2-Connecting seat, 3-Mounting hole, 4-First external thread, 5-Limiting shoulder, 6-Second external thread, 7-Wire, 8-Connector, 9-Limiting buckle, 91-Upright part, 92-Snap part, 10-Limiting groove, 11-Connector, 12-Hex nut, 13-Sealing gasket. Detailed Implementation

[0027] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. It should be understood that the snap-fit ​​connection structure of the gas alarm wiring described herein is a preferred embodiment and is only used for illustration and explanation of this utility model, and does not constitute a limitation thereof.

[0028] The directional terms or positional relationships such as "up," "down," "left," and "right" used in this utility model are based on the accompanying drawings in this utility model specification. Figure 3 The orientation relationships are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component must have a specific orientation, or that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the content protected by this utility model.

[0029] This implementation example Figures 2-5 As shown, a snap-fit ​​connection structure for a gas alarm connection cable is provided, including a housing 1 and a connector assembled by screwing.

[0030] like Figure 2 As shown in the figure, housing 1 is a partial structure. The connector is installed on the lower end face of housing 1. Therefore, the upper side of housing 1 is the interior of housing 1, and the lower side is the exterior of housing 1. In other embodiments, the installation position of the connector in housing 1 can be adapted as needed. To improve the structural stability of the connection, a connector seat 2 is integrally provided at the connection point of housing 1 with the connector, which locally thickens housing 1. Therefore, the thickness of connector seat 2 is greater than the thickness of housing 1. A mounting hole 3 for fitting the connector is provided on connector seat 2. The mounting hole 3 is an internally threaded hole.

[0031] The connector is a rotating structure, assembled onto the housing 1 by screwing. From top to bottom, the connector includes an integrally formed first external thread portion 4, a limiting shoulder 5, and a second external thread portion 6, with a connecting wire passing through it. The connecting wire includes a wire 7 extending from the upper end of the first external thread portion 4, and a connector 8 for connecting to a gas alarm. The second external thread portion 6 is hollow, and the connector 8 is disposed within the hollow structure of the second external thread portion 6. The first external thread portion 4 is used to connect to the housing 1 and is adapted to the mounting hole 3 of the internal thread. The limiting shoulder 5 is larger than the outer diameter of the first external thread portion 4 to limit the screwing depth of the first external thread portion 4. In this embodiment, the outer edge of the limiting shoulder 5 is hexagonal for easy installation. The second external thread portion 6 is used to connect to the gas meter alarm and is coaxial with the first external thread portion 4.

[0032] A matching snap-fit ​​structure is provided between the housing 1 and the connector to prevent loosening of the threaded parts. For example... Figure 3 As shown, a limiting buckle 9 extending upward is fixed on the end face of the first external thread portion 4 away from the limiting shoulder 5. The limiting buckle 9 includes an upright portion 91 integrally connected to the end face of the first external thread portion 4 along the height direction, and a buckle portion 92 fixed to the end of the upright portion 91 and extending outward. Here, the outward direction is the direction extending from the axis of the connector to the outer periphery of the connector. The outwardly extending buckle portion 92 can abut against the housing 1. Further, in this embodiment, two limiting buckles 9 are symmetrically arranged. The distance between the outer edges of the two limiting buckle 9 upright portions 91 is less than the small diameter of the first external thread portion 4, and the distance between the outer edges of the two limiting buckle 9 buckle portions 92 is greater than the inner diameter of the mounting hole 3. Moreover, the outer side of the upper end of the buckle portion 92 is inclined. This can ensure that the buckle portion 92 can be smoothly inserted into the mounting hole 3, and also ensure that when the connector is screwed to the position where the limiting shoulder 5 abuts against the housing 1, the lower edge of the buckle portion 92 abuts against the upper edge of the housing 1, thereby playing a role in preventing loosening. Furthermore, such as Figure 2 , Figure 3 , Figure 5 As shown, the top edge of the connecting seat 2 has a limiting groove 10 that matches the limiting buckle 9. Here, "matching" means that the number of limiting grooves 10 is the same as the number of limiting buckles 9, and the width of the limiting groove 10 is the same as the width of the limiting buckle 9, so that after installation, the limiting buckle 9 can be precisely engaged in the limiting groove 10. Simultaneously, the depth of the limiting groove 10 should be sufficient so that when the limiting buckle 9 is precisely engaged in the limiting groove 10, the upper end face of the limiting shoulder 5 abuts against the lower end face of the housing 1. The number of limiting buckles 9 and limiting grooves 10 can be adjusted according to actual needs.

[0033] like Figure 4As shown, the connecting wires include two spaced, downward-extending connectors 8 (the internal structures of the wires 7 and connectors 8 are not shown). After installation, the connecting wires of the two connectors 8 need to be parallel to the orientation of the housing 1. Figure 3 To ensure the gas alarm can be smoothly installed on the second external thread 6, it is necessary to consider the length direction within the thread. Figure 4 As shown, in this embodiment, the connecting lines of the two connectors 8 are parallel to the connecting lines of the two limiting buckles 9, and the connecting lines of the two limiting slots 10 are parallel to the setting direction of the housing 1. Figure 3 (in the length direction), so that after installation, the connecting lines of the two connectors 8, the connecting lines of the limiting buckle 9, and the connecting lines of the two limiting slots 10 are all parallel to the setting direction of the housing 1. Figure 3 The length direction of the connector (in the middle) ensures that when the connector is installed in place, the direction of the connector 8 exactly meets the direction requirements when connecting to the gas alarm below.

[0034] When using this embodiment, use the installation tool to align the connector according to... Figure 3 Twist it in the direction of the arrow into the through hole of the connecting seat 2 of the housing 1 until the latching parts 92 of the two limiting buckles 9 are respectively engaged in the two limiting slots 10, forming as shown in the figure. Figure 2 The structure shown indicates that the installation is complete.

Claims

1. A snap-fit ​​connection structure for a gas alarm connection cable, characterized in that: The device includes a housing and a connector. The housing has a mounting hole for fitting the connector, and the mounting hole has an internal thread. The connector includes a first external thread portion that is adapted to the mounting hole for connecting to the housing. The connector also includes a limiting shoulder that is fixedly connected to the first external thread portion. The size of the limiting shoulder is larger than the outer diameter of the first external thread portion. The device is characterized in that an upwardly extending limiting buckle is fixedly provided on the end face of the first external thread portion away from the limiting shoulder, so that when the connector is screwed to the position where the limiting shoulder abuts against the housing, the lower edge of the limiting buckle abuts against the upper edge of the housing.

2. The snap-fit ​​connection structure of the gas alarm connection wire according to claim 1, characterized in that: There are two symmetrically arranged limit buckles.

3. The snap-fit ​​connection structure of the gas alarm connection wire according to claim 2, characterized in that: The limiting buckle includes an upright portion fixedly connected to the end face of the first external thread portion along the height direction, and a buckling portion fixedly connected to the end of the upright portion and extending outward. When the connector is screwed to the position where the limiting shoulder abuts against the housing, the lower edge of the buckling portion abuts against the upper edge of the housing.

4. The snap-fit ​​connection structure of the gas alarm connection wire according to claim 3, characterized in that: The distance between the outer edges of the two vertical limit buckles is less than the minor diameter of the first external thread, and the distance between the outer edges of the two limit buckle buckles is greater than the inner diameter of the mounting hole.

5. The snap-fit ​​connection structure of the gas alarm connection wire according to claim 4, characterized in that: The upper outer side of the buckle part is beveled.

6. The snap-fit ​​connection structure for the gas alarm connection wire according to any one of claims 2 to 5, characterized in that: The end of the limiting shoulder away from the first external thread is fixedly connected to a second external thread that is coaxial with the first external thread. A connecting wire is provided through the connector. The connecting wire includes a wire portion extending from the upper end of the first external thread and a connector portion for connecting to a gas alarm. The second external thread is a hollow structure, and the connector portion is located in the hollow structure of the second external thread.

7. The snap-fit ​​connection structure of the gas alarm connection wire according to claim 6, characterized in that: The connector section includes two spaced, downward-extending connectors, with the connecting lines of the two connectors parallel to the connecting lines of the two limit buckles.

8. The snap-fit ​​connection structure for the gas alarm connection wire according to any one of claims 2 to 5 and 7, characterized in that: A connector is fixed on the housing for connecting to the connector head. The thickness of the connector is greater than the thickness of the housing, and the mounting hole is provided on the connector.

9. The snap-fit ​​connection structure of the gas alarm connection wire according to claim 8, characterized in that: The top edge of the connector has a limiting slot that matches the limiting buckle.

10. The snap-fit ​​connection structure of the gas alarm connection wire according to claim 8, characterized in that: The outer edge of the limiting shoulder has a hexagonal structure.

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