CN210167518U

CN210167518U - Be applied to sealed wiring subassembly that measuring instrument can realize self-fixing

Info

Publication number: CN210167518U
Application number: CN201921241676.4U
Authority: CN
Inventors: 宋兴健
Original assignee: Goldcard Smart Group Co Ltd
Current assignee: Goldcard Smart Group Co Ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-03-20
Anticipated expiration: 2029-08-02

Abstract

The utility model relates to a fixed technical field of metering device assembly especially relates to a be applied to sealed wiring subassembly that metering device can realize from fixing. It includes metering device's casing and is fixed in the terminal on the casing, be equipped with a plurality of fixed archs on the terminal, be equipped with the via hole on the casing, via hole week side is formed with a plurality of recesses that correspond the setting with fixed archs, it is different with other protruding size or shape that have at least one arch in the arch. The benefit of this scheme lies in that the terminal can not contract back in the installation, can save the nut, has realized removing the nut and has realized self-fixing.

Description

Be applied to sealed wiring subassembly that measuring instrument can realize self-fixing

Technical Field

The utility model relates to a fixed technical field of metering device assembly especially relates to a be applied to sealed wiring subassembly that metering device can realize from fixing.

Background

The screw fixing piece is a fixing device frequently seen in daily life of people and is widely applied to various industries. Screw connections, for example, are almost ubiquitous in the machine manufacturing industry. Some are used to fasten two objects together, and some are used to fasten themselves to an object. In a common mode, a hole is formed in an object, and a fixing piece is locked by a nut after passing through the hole.

In the existing practical application, for example, the intelligent meter is provided with a built-in valve or an electronic metering device, and needs to be connected with an external controller through a binding post penetrating through a shell. Thus, the terminal is required to be fixed on the shell of the intelligent watch. The commonly used terminal structure is fixed on the shell by means of screw connection. Or a binding post structure with a metal shell is used and is riveted on the shell by using special riveting equipment. The wiring terminal fixed by the threaded connection mode is used, the wiring terminal can be reliably fixed on the shell by means of a tool and a wrench during installation, and the nut is locked by applying large torque to ensure that the nut cannot be loosened when vibrating or falling. Therefore, the installation operation is more complicated, the production efficiency is low, and the threaded connection part can be cracked and deformed under the condition of poor torque control, so that the connection is failed, and the assembly cannot be carried out or is difficult to carry out.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide one kind and be applied to the sealed wiring subassembly that measuring instrument can realize from fixing.

This scheme provides a be applied to sealed wiring subassembly that measuring instrument can realize from fixing, including measuring instrument's casing and be fixed in the terminal on the casing, be equipped with a plurality of fixed archs on the terminal, be equipped with the via hole on the casing, via hole week side is formed with a plurality of recesses that correspond the setting with fixed arch, it is different with other protruding sizes or shapes to have at least one arch in the arch. In the scheme, at least two bulges can be provided, three or more bulges can be provided, the shapes of the bulges can be triangular, fan-shaped, rectangular or square or oval, and the number and the shape of the grooves are consistent with those of the bulges.

In a further scheme, the binding post comprises a binding post seat and a binding post shaft which is integrally formed with the binding post seat, and the bulge is arranged on the binding post shaft.

According to a further scheme, a limiting groove is formed in the shell, a limiting rib is arranged on the terminal base, and the limiting rib is limited in the limiting groove.

In a further scheme, a sealing ring is arranged between the terminal post seat and the shell.

According to a further scheme, the wiring column base is provided with an installation step, and the sealing ring is sleeved on the installation step.

In a further scheme, the size of the sealing ring is larger than that of a circle where the outermost end of the groove is located.

After the technical scheme is adopted, the utility model has the advantages of as follows:

1. the shell is provided with a via hole, a plurality of grooves which are arranged corresponding to the fixed bulges are formed on the peripheral side of the via hole, and at least one bulge in the bulge is different from other bulges in size or shape. Firstly, be provided with protruding and recess customer and realize the self-align of terminal, rotate a little after the counterpoint installation, just can realize self-align, the terminal can not retract, can save the nut, has realized removing the nut ization. In addition, at least one of the projections has a size or shape different from the other projections. Therefore, the situation that the shape of the protrusion is completely consistent with that of the groove and the matching alignment occurs again after the rotation does not exceed 360 degrees can be realized.

2. The casing is provided with a limiting groove, the terminal post seat is provided with a limiting rib, and the limiting rib is limited in the limiting groove. Therefore, the binding post can be further limited, and the shaft is prevented from rotating. Further enhancing the fixation effect.

3. And a sealing ring is arranged between the terminal post seat and the shell. The size of the sealing ring is larger than that of a circle where the outermost end of the groove is located. The sealing effect is increased to realize IP protection, and the size design further ensures the sealing performance.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a schematic front view of a meter according to the present invention;

FIG. 2 is a side sectional view of the meter of the present invention;

FIG. 3 is an internal view of the sealing and wiring assembly of the present invention;

FIG. 4 is a cross-sectional view of the sealing wire assembly of the present invention;

fig. 5 is the schematic view of the matching state between the terminal of the sealing wiring assembly and the via hole of the housing of the present invention.

Detailed Description

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

In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.

The utility model discloses the scheme provides a be applied to that metering device can realize from fixed sealed wiring subassembly self-align fixed subassembly, can be applied to positive displacement gas table, electronic type gas table and flowmeter etc. and also can be used to products such as water gauge, ammeter.

Specifically, as shown in fig. 1 to 5, the assembly includes a housing 1 of the metering device and a terminal 2 fixed on the housing 1, the terminal 2 is provided with a plurality of fixing protrusions 23, the housing 1 is provided with a via hole 11, a plurality of grooves 12 corresponding to the fixing protrusions 23 are formed around the via hole 11, and at least one of the protrusions 23 has a different size or shape from other protrusions. In the present embodiment, the number of the protrusions 23 is at least two, and may be three or more, the shape may be triangular, fan-shaped, rectangular, or square or oval, and the number and the shape of the grooves 12 are the same as the protrusions 23. The binding post 2 comprises a binding post seat 21 and a binding post shaft 22 integrally formed with the binding post seat 21, and the bulge 23 is arranged on the binding post shaft 22. In order to ensure the air tightness of the metering housing, a terminal 2 is connected to a controller (not shown) through the housing 1. One end of the binding post 2 is connected with a valve and a metering element inside the shell 1, and the other end is connected with a circuit board installed in the controller.

Specifically, as shown in fig. 2 or fig. 3, a limiting groove 13 is provided on the housing 1, a limiting rib 24 is provided on the terminal base 21, and the limiting rib 24 is limited in the limiting groove 13. A sealing ring 26 is arranged between the terminal base 21 and the housing 1. The terminal post base 21 is provided with an installation step 25, and the sealing ring 26 is sleeved on the installation step 25. The size of the sealing ring 26 is larger than the size of the circle at the outermost end of the groove 12. I.e. the size of the circle on which the outermost edge of the groove 12 lies. During assembly, the sealing ring 26 is placed into the mounting step 25 of the terminal 2, so that the sealing ring is reliably fixed on the mounting step 25 in a certain stretching state, and the assembly is installed on the shell and can be placed in the direction matched with the orientation direction of the through hole 11 in the shell 1 before installation. The protrusion 23 and the groove 12 need to be aligned and assembled. The protrusion 23 on the post 2 is designed with a slope structure to contact with the via hole 11 on the housing 1. At this time, the sealing ring 26 is in a loose state, the binding post 2 is rotated by a certain angle along the counterclockwise direction, the upper inclined plane of the bulge 23 slides along the plane of the shell 1 during rotation, and the formed radial displacement enables the sealing ring 26 to generate elastic deformation and generate a compression installation state. Finally, the limiting rib 24 on the binding post 2 slides into the limiting groove 13 of the shell 1 and cannot be separated, and meanwhile, the sealing ring 26 is guaranteed to be in a compressed state all the time. Prevent that the screw fastening makes the sealing washer compress excessively and take place plastic deformation, lead to sealed the inefficacy.

As shown in fig. 4, the terminal 2 is designed with a structure for fixing the glue filling box, so that the glue filling operation can be conveniently performed, the glue filling operation can be completed by glue with different flowability, and the connection point in contact with the fuel gas can be reliably protected. The scheme is designed with a sleeve structure for filling glue, provides a convenient operation space in occasions with higher requirements on corrosion resistance and needing to be filled with glue, ensures that sealing glue with different fluidity can be applied to the structure, and has stronger adaptability;

in the scheme, the shell 1 is provided with the via hole 11, the periphery of the via hole 11 is provided with a plurality of grooves 12 which are arranged corresponding to the fixed bulges 23, and at least one bulge in the bulges 23 has different size or shape from other bulges. Firstly, the client who is provided with arch 23 and recess 12 realizes the self-align of terminal, and the counterpoint installation back is rotatory a little, just can realize self-align, and the terminal can not retract, can save the nut, has realized removing the nut and has changed. In addition, at least one of the projections has a size or shape different from the other projections. Therefore, the situation that the shape of the bulge 23 is completely consistent with that of the groove 12 and the matching alignment occurs again after the rotation is not more than 360 degrees can be realized, the nut is omitted, and meanwhile, the self-positioning assembly and fixation of the binding post are realized.

Claims

1. The utility model provides a be applied to sealed wiring subassembly that measuring instrument can realize from fixing, includes measuring instrument's casing and is fixed in the terminal on the casing, its characterized in that: the wiring terminal is provided with a plurality of fixing bulges, the shell is provided with a via hole, a plurality of grooves which are correspondingly arranged with the fixing bulges are formed on the periphery of the via hole, and at least one bulge in the bulge is different from other bulges in size or shape.

2. The self-fastening sealing wire assembly applied to a metering device of claim 1, wherein the wire terminal comprises a wire terminal base and a wire terminal shaft integrally formed with the wire terminal base, and the protrusion is disposed on the wire terminal shaft.

3. The self-fixing sealing wire assembly applied to the metering device as claimed in claim 2, wherein a limiting groove is formed in the housing, and a limiting rib is formed on the terminal base and is limited in the limiting groove.

4. The self-fastening sealing wire assembly applied to the metering device as claimed in claim 2, wherein a sealing ring is arranged between the terminal base and the housing.

5. The self-fixing sealing wiring assembly applied to the metering device as claimed in claim 4, wherein the mounting step is arranged on the terminal base, and the sealing ring is sleeved on the mounting step.

6. The self-anchoring sealing wire assembly applied to a metering device as claimed in claim 5, wherein the size of the sealing ring is larger than the size of the circle on which the outermost end of the groove is located.