CN216869671U

CN216869671U - Gas meter shell

Info

Publication number: CN216869671U
Application number: CN202220445022.9U
Authority: CN
Inventors: 陈敏国
Original assignee: Ningbo Wellys Metering Co ltd
Current assignee: Ningbo Wellys Metering Co ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-07-01
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a gas meter shell, which comprises a base and an upper cover component, wherein the upper cover component is fixed on the base, a concave cavity is arranged on the outer top of the upper cover component, a button is arranged in the concave cavity, a push rod is vertically arranged in the middle of the bottom of the button, the push rod is movably arranged in the upper cover component in a penetrating manner, a reset structure is arranged between the button and the upper cover component, an anti-falling structure is arranged between the push rod and the upper cover component, an annular convex edge extending downwards is arranged on the inner top of the upper cover component, the lower end of the push rod is inserted into the annular convex edge, a rubber sleeve is sleeved outside the annular convex edge, the rubber sleeve is tightly attached to and sealed with the annular convex edge, a push block is arranged on the inner side of the annular convex edge, and the outer edge of the push block is connected with the inner edge of the rubber sleeve through an annular elastic part; the utility model can prevent water vapor in the external environment from entering the cavity between the upper cover assembly and the base through the gap between the button and the upper cover assembly.

Description

Gas meter shell

Technical Field

The utility model relates to the technical field of gas meters, in particular to a gas meter shell.

Background

The gas meter is a device for metering the gas quantity used by a user, the gas meter on the market at present mainly comprises a gas meter shell and a meter body fixed in the gas meter shell, the gas meter shell comprises a base and an upper cover component, the upper cover component is fixed on the base, in addition, a button is also installed on the upper cover component, and after the button is pressed down, the button is used for triggering a button on a circuit board positioned between the upper cover component and the base; however, in the use process of the gas meter on the market at present, water vapor in the external environment easily enters the cavity between the upper cover component and the base through the gap between the button and the upper cover component, so that the circuit board between the upper cover component and the base is affected by the damp phenomenon, the circuit board is easily corroded or short-circuited, and the service life of the gas meter is further affected.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the gas meter shell which can prevent water vapor in the external environment from entering a cavity between an upper cover component and a base through a gap between a button and the upper cover component.

The utility model relates to a gas meter shell, which comprises a base and an upper cover component, wherein the upper cover component is fixed on the base, a concave cavity is arranged on the outer top of the upper cover component, a button is arranged in the concave cavity, a push rod for triggering a key positioned on a circuit board is vertically arranged in the middle of the bottom of the button, the push rod is movably arranged in the upper cover component in a penetrating way, a reset structure for driving the button to move upwards and reset when the button is released is arranged between the button and the upper cover component, an anti-drop structure for preventing the push rod from being separated from the upper cover component when the button is released is arranged between the push rod and the upper cover component, an annular convex edge extending downwards is arranged on the inner top of the upper cover component, the lower end of the push rod is inserted into the annular convex edge, a rubber sleeve is sleeved on the outer part of the annular convex edge, the rubber sleeve is tightly attached to and sealed with the annular convex edge, a push block is arranged on the inner side of the annular convex edge, and the push block is used for triggering the key positioned on the circuit board after being pushed by the push rod, the outward flange of ejector pad is connected through the elastic component of annular form with the inward flange of rubber sleeve, ejector pad, elastic component and rubber sleeve integrated into one piece, the lower extreme of rubber sleeve be used for with be located the upper end face counterbalance of the circuit board between base and the upper cover subassembly and lean on.

The meter shell of the gas meter is characterized in that the inner diameter of the rubber sleeve is smaller than the outer diameter of the annular convex edge, the inner wall of the upper end of the rubber sleeve is provided with an annular chamfer surface, and the annular chamfer surface is used for being matched with the outer wall of the annular convex edge to guide so that the rubber sleeve can be sleeved outside the annular convex edge conveniently; because the inner diameter of the rubber sleeve is smaller than the outer diameter of the annular convex edge, the rubber sleeve can be tightly matched and sealed with the annular convex edge after being sleeved outside the annular convex edge; after the annular chamfer surface is arranged on the inner wall of the upper end of the rubber sleeve, the annular chamfer surface can be matched with the outer wall of the annular convex edge to guide in the process that the rubber sleeve is sleeved on the outer part of the annular convex edge, so that the rubber sleeve is sleeved on the outer part of the annular convex edge.

The utility model relates to a gas meter shell, wherein a reset structure comprises a spring, the spring is sleeved outside a push rod, the lower end of the spring is abutted against the inner bottom of a concave cavity, and the upper end of the spring is abutted against the lower end surface of a button; by adopting the reset structure, after the button is released, the button and the ejector rod can reliably move upwards and reset under the action of the spring, and in addition, the reset structure has the advantages of simple structure and low cost.

The utility model relates to a gas meter shell, wherein a first annular slot for inserting the lower end part of a spring is arranged on the inner bottom of a concave cavity, and a second annular slot for inserting the upper end part of the spring is arranged on the lower end surface of a button; after setting up first annular slot and set up second annular slot on the lower terminal surface of button through the bottom at the cavity, the lower extreme of spring can insert in first annular slot, and the upper end of spring can insert in second annular slot, so, can play location and spacing effect to the spring to avoid the phenomenon that the spring appears removing at will.

The anti-falling structure comprises a clamp spring, an annular clamping groove is formed in the outer wall of the ejector rod, the clamp spring is clamped with the annular clamping groove in a matched mode, and the outer edge of the clamp spring is used for abutting against the inner top of the upper cover assembly; after adopting this kind of anti-disengaging structure, after the button is released, shift up the in-process that resets promptly at button and ejector pin, the jump ring finally can offset with the interior top of upper cover subassembly, so, can effectively avoid the ejector pin the phenomenon that breaks away from the upper cover subassembly to appear, in addition, this anti-disengaging structure has simple structure and advantage with low costs.

The meter shell of the utility model is characterized in that a ring-shaped gap is reserved between the outer peripheral wall of the button and the inner peripheral wall of the concave cavity; after adopting this kind of structure, can avoid appearing the phenomenon of jam between button and the recess to can make the button reciprocate reliably.

According to the utility model, through the arrangement of the push block, the elastic part and the rubber sleeve, and the push block, the elastic part and the rubber sleeve are integrally formed, so that water vapor in an external environment can be prevented from entering a cavity between the upper cover component and the base through a gap between the button and the upper cover component, namely, a damp phenomenon of a circuit board between the upper cover component and the base can be avoided, the circuit board can be prevented from being corroded or short-circuited, and the service life of the gas meter can be prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details should not be taken to limit the utility model. That is, in some embodiments of the utility model, such practical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model discloses a gas meter shell, which comprises a base 1 and an upper cover component 2, wherein the upper cover component 2 is fixed on the base 1, a concave cavity 21 is arranged on the outer top of the upper cover component 2, a button 3 is arranged in the concave cavity 21, a push rod 31 used for triggering a key positioned on a circuit board is vertically arranged in the middle of the bottom of the button 3, the push rod 31 is movably arranged in the upper cover component 2 in a penetrating way, a reset structure used for driving the button 3 to move upwards and reset when the button 3 is released is arranged between the button 3 and the upper cover component 2, an anti-drop structure used for preventing the push rod 31 from being separated from the upper cover component 2 when the button 3 is released is arranged between the push rod 31 and the upper cover component 2, an annular convex edge 22 extending downwards is arranged on the inner top of the upper cover component 2, the lower end of the push rod 31 is inserted into the annular convex edge 22, a rubber sleeve 4 is sleeved outside the annular convex edge 22, and the rubber sleeve 4 is tightly attached to and sealed with the annular convex edge 22, the inner side of the annular convex edge 22 is provided with a push block 41, the push block 41 is used for triggering a key on the circuit board after being pushed by the ejector rod 31, the outer edge of the push block 41 is connected with the inner edge of the rubber sleeve 4 through an annular elastic part 42, the push block 41, the elastic part 42 and the rubber sleeve 4 are integrally formed, and the lower end of the rubber sleeve 4 is used for abutting against the upper end face of the circuit board between the base 1 and the upper cover component 2; after the push block, the elastic part and the rubber sleeve are integrally formed, the bottom of the rubber sleeve forms a closed structure.

The inner diameter of the rubber sleeve 4 is smaller than the outer diameter of the annular convex edge 22, an annular chamfer surface 43 is arranged on the inner wall of the upper end of the rubber sleeve 4, and the annular chamfer surface 43 is used for being matched with the outer wall of the annular convex edge 22 for guiding so that the rubber sleeve 4 can be sleeved outside the annular convex edge 22; because the inner diameter of the rubber sleeve is smaller than the outer diameter of the annular convex edge, the rubber sleeve can be tightly matched and sealed with the annular convex edge after being sleeved outside the annular convex edge; after the annular chamfer surface is arranged on the inner wall of the upper end of the rubber sleeve, the annular chamfer surface can be matched with the outer wall of the annular convex edge to guide in the process that the rubber sleeve is sleeved outside the annular convex edge, so that the rubber sleeve is sleeved outside the annular convex edge.

The reset structure comprises a spring 5, the spring 5 is sleeved outside the ejector rod 31, the lower end of the spring 5 is abutted against the inner bottom of the concave cavity 21, and the upper end of the spring 5 is abutted against the lower end face of the button 3; by adopting the reset structure, after the button is released, the button and the ejector rod can reliably move upwards and reset under the action of the spring.

A first annular slot 23 for inserting the lower end part of the spring 5 is arranged on the inner bottom of the cavity 21, and a second annular slot 32 for inserting the upper end part of the spring 5 is arranged on the lower end surface of the button 3; after setting up first annular slot and set up second annular slot on the lower terminal surface of button through the bottom at the cavity, the lower extreme of spring can insert in first annular slot, and the upper end of spring can insert in second annular slot, so, can play location and spacing effect to the spring to avoid the phenomenon that the spring appears removing at will.

The anti-falling structure comprises a clamp spring 6, an annular clamping groove 33 is formed in the outer wall of the ejector rod 31, the clamp spring 6 is clamped with the annular clamping groove 33 in a matched mode, and the outer edge of the clamp spring 6 is used for abutting against the inner top of the upper cover assembly 2; after adopting this kind of anti-disengaging structure, after the button is released, shift up the in-process that resets promptly at button and ejector pin, the jump ring finally can offset with the interior top of upper cover subassembly, so, can effectively avoid the ejector pin the phenomenon that breaks away from the upper cover subassembly to appear, in addition, this anti-disengaging structure has simple structure and advantage with low costs.

A ring-shaped gap is reserved between the outer peripheral wall of the button 3 and the inner peripheral wall of the cavity 21; after adopting this kind of structure, can avoid appearing the phenomenon of jam between button and the recess to can make the button reciprocate reliably.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a gas meter watchcase, includes base (1) and upper cover subassembly (2), upper cover subassembly (2) are fixed on base (1), be provided with cavity (21) on the outer top of upper cover subassembly (2), be provided with button (3) in cavity (21), the middle part of button (3) bottom is vertical to be provided with ejector pin (31) that are used for triggering the button that is located the circuit board, ejector pin (31) activity is worn to establish in upper cover subassembly (2), be provided with between button (3) and upper cover subassembly (2) and be used for actuating button (3) to shift up the reset structure who resets when releasing button (3), be provided with between ejector pin (31) and upper cover subassembly (2) and be used for preventing ejector pin (31) to break away from the anti-disengaging structure of upper cover subassembly (2) when releasing button (3), its characterized in that: be provided with downwardly extending's annular chimb (22) on the interior top of upper cover subassembly (2), the lower extreme of ejector pin (31) inserts in annular chimb (22), the outside cover of annular chimb (22) is equipped with rubber sleeve (4), rubber sleeve (4) are hugged closely and are sealed with annular chimb (22), the inboard of annular chimb (22) is provided with ejector pad (41), ejector pad (41) are used for being pushed up by ejector pin (31) and are pushed up the back and trigger the button that is located on the circuit board, the outward flange of ejector pad (41) is connected through annular elastic component (42) with the inward flange of rubber sleeve (4), ejector pad (41), elastic component (42) and rubber sleeve (4) integrated into one piece, the lower extreme of rubber sleeve (4) is used for leaning on with the up end face counterbalance that is located the circuit board between base (1) and upper cover subassembly (2).

2. The gas meter shell according to claim 1, wherein the inner diameter of the rubber sleeve (4) is smaller than the outer diameter of the annular flange (22), an annular chamfer (43) is arranged on the inner wall of the upper end of the rubber sleeve (4), and the annular chamfer (43) is used for being matched and guided with the outer wall of the annular flange (22) so that the rubber sleeve (4) is sleeved outside the annular flange (22).

3. The gas meter shell according to claim 1 or 2, wherein the reset structure comprises a spring (5), the spring (5) is sleeved outside the ejector rod (31), the lower end of the spring (5) abuts against the inner bottom of the cavity (21), and the upper end of the spring (5) abuts against the lower end face of the button (3).

4. A gas meter case according to claim 3, wherein the inner bottom of the cavity (21) is provided with a first annular insertion groove (23) for inserting the lower end portion of the spring (5), and the lower end face of the push button (3) is provided with a second annular insertion groove (32) for inserting the upper end portion of the spring (5).

5. The gas meter shell according to claim 1, wherein the anti-disengaging structure comprises a clamp spring (6), an annular clamping groove (33) is formed in the outer wall of the ejector rod (31), the clamp spring (6) is clamped with the annular clamping groove (33) in a matched mode, and the outer edge of the clamp spring (6) is used for abutting against the inner top of the upper cover assembly (2).

6. A meter case according to claim 1, wherein a ring-shaped gap is left between the outer peripheral wall of the button (3) and the inner peripheral wall of the cavity (21).