CN216012302U - Metering instrument - Google Patents

Abstract

The embodiment of the utility model discloses metering device relates to instrument technical field, can leave the dismantlement vestige that is difficult for wiping on the table body or seal at the in-process of getting rid of the seal to promote the safety protection performance of metering device itself to a certain extent. The metering instrument comprises a base meter, a controller is arranged on the base meter, a connecting part is arranged on the controller, the controller is fixed on the base meter by the connecting part, and a seal is sealed at an inlet of the connecting part; the side part of the seal is provided with a first clamping structure, a second clamping structure is arranged on the inner wall of the connecting part or at the inlet of the connecting part, and the first clamping structure and the second clamping structure are clamped. The method is suitable for scenes needing to be sealed.

Description

Metering instrument

Technical Field

The utility model relates to an instrument technical field. In particular to a metering device.

Background

In order to ensure the measuring fairness of a measuring instrument, such as a gas meter, a seal is generally arranged at a connecting part of the measuring instrument, and if the measuring instrument needs to be disassembled, the seal needs to be removed firstly, so that the instrument is prevented from being disassembled by people maliciously.

Most of the existing seals are plastic caps, and through the tight fit of the plastic caps and the connecting parts, illegal users leave traces on the plastic caps when taking off the plastic caps. However, the elasticity of the plastic cap is gradually weakened in a long-term pressed state, and the plastic cap can be subjected to size change under the influence of temperature and humidity, so that a user can take the plastic cap off the metering instrument without leaving a dismounting trace through the negative pressure sucker or the hot melt adhesive, the plastic cap loses the sealing effect, and the safety protection performance of the metering instrument is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides a metering device, which leaves a detachment trace on a meter body or a seal that is not easy to be wiped during the process of removing the seal, thereby improving the safety protection performance of the metering device itself to a certain extent.

In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:

the embodiment of the utility model provides a metering instrument, including the base table, be equipped with the controller on the base table, be equipped with connecting portion on the controller, the connecting portion will the controller is fixed on the base table, there is the seal at the entrance shutoff of connecting portion; the side part of the seal is provided with a first clamping structure, a second clamping structure is arranged on the inner wall of the connecting part or at the inlet of the connecting part, and the first clamping structure and the second clamping structure are clamped.

According to the utility model discloses a concrete implementation mode, first card is held the structure and is included establishing the first arch of at least one of seal lateral part, second card is held the portion including establishing on the inner wall of connecting portion or establish the second of at least one of connecting portion entrance is protruding, first arch is located the bellied below of second, just first bellied top with the bellied bottom of second is in the axial butt.

According to a specific implementation manner of the embodiment of the present invention, the bottom of the first protrusion has an inclined surface or an arc surface, and the top of the first protrusion is a plane; the top of the second protrusion is provided with an inclined surface or an arc surface, and the bottom of the second protrusion is a plane.

According to a specific implementation manner of the embodiment of the present invention, the seal includes an end portion and a side wall connected to one side of the end portion, and the first clamping structure is disposed outside the side wall; an open slot is formed in the side wall along the length direction of the side wall.

According to a specific implementation manner of the embodiment of the utility model, the sealing device comprises a positioning structure, wherein the positioning structure comprises a first positioning piece arranged on the side part of the seal and a second positioning piece arranged on the inner wall of the connecting part; the first positioning piece is axially abutted against the second positioning piece.

According to a specific implementation manner of the embodiment of the present invention, the first positioning element is a positioning groove formed in the side portion of the seal, the second positioning element is a positioning post or a positioning protrusion formed on the inner wall of the connecting portion, the direction of the positioning groove is consistent with the length direction of the seal, and the positioning post or the positioning protrusion is located in the positioning groove; or, first locating part is for establishing the reference column or the location arch of seal lateral part, the second locating part is for establishing constant head tank on the connecting portion inner wall, reference column or the protruding trend in location with the length direction of seal is unanimous, reference column or location arch are located in the constant head tank.

According to the utility model discloses a concrete mode of realization of embodiment, the edge of the tip of seal, and/or the edge of the entrance of connecting portion has sharp edge.

According to the embodiment of the present invention, the engaging amount of the first clamping structure and the second clamping structure clamped each other is 0.3mm-1 mm.

According to the utility model discloses a concrete mode of realization, the lateral part of seal with fit clearance between the inner wall of connecting portion is for being less than or equal to 0.5 mm.

According to the utility model discloses a concrete implementation mode, the top surface of the tip of seal with the surface of controller flushes.

The embodiment of the utility model provides a metering device, the card that is held between the structure is held to the first card through the seal and the second card of connecting portion is held and is realized the seal to the shutoff of connecting portion, and this kind of connected mode has great locking force, consequently, need exert great effort and damage the seal to the seal when getting rid of the seal, can leave the dismantlement vestige that is difficult for wiping on the table body or seal at the in-process of getting rid of the seal to promote the safety protection performance of metering device itself to a certain extent.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded perspective view of a metering device according to an embodiment of the present invention;

fig. 2 is an internal schematic view of a controller of a metering device according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a meter mounted with a seal according to an embodiment of the present invention;

fig. 4 is a partial cross-sectional view of a meter without a seal according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a seal of a metering device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another angle of a seal of a metering device according to an embodiment of the present invention;

fig. 7 is a schematic view of a seal and a connection portion of a meter according to an embodiment of the present invention;

fig. 8 is a schematic view of another angle of the seal and the connection portion of the metering device according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In order to help understand the embodiment of the present invention, before the following embodiments are discussed, the following embodiments take the gas meter as an example, and the current situation of the current metering device is simply introduced as follows:

at present, in order to prevent the gas meter from being stolen due to artificial malicious disassembly and other potential safety hazards, a gas company requires that the gas meter is provided with a seal, so that when the gas meter is disassembled, whether disassembly behaviors exist can be found in time through disassembly traces left on the seal or a meter body, or when metering errors occur in the metering instrument, the root cause of the counting errors of the metering instrument can be conveniently determined.

The seal of the existing gas meter mostly uses a plastic cap, and is connected with a meter body in a tight fit mode, so that the locking force is small. Some illegal users can take the seal off the gas meter without leaving a dismounting trace in a negative pressure or gluing mode, the original shape is recovered after the metering performance of the gas meter is damaged, the illegal users are not easy to find in time, and economic loss can be brought to a gas company if gas stealing behaviors occur. Therefore, the safety protection performance of the existing gas meters and other metering instruments still needs to be improved.

In order to solve the above technical problems in the metering devices such as a gas meter, referring to fig. 1 to 8, an embodiment of the present invention provides a metering device, including a base meter 1, a controller 2 is disposed on the base meter 1, a connecting portion 30 is disposed on the controller 2, the controller 2 is fixed on the base meter 1 by the connecting portion 30, and a seal 50 is sealed at an inlet of the connecting portion 30; the side of the seal 50 is provided with a first retaining structure 51, the inner wall of the connecting portion 30 or the entrance of the connecting portion 30 is provided with a second retaining structure 31, and the first retaining structure 51 and the second retaining structure 31 are retained.

The connecting part can be a screw hole, a screw for fixing the base table and the controller is arranged in the screw hole in a penetrating mode, and a seal 50 is plugged at an inlet of the screw hole. The shape of the seal 50 may be circular or square, which is not limited herein, and the material of the seal 50 may be plastic with elasticity.

The embodiment of the utility model provides a metering device, the card that is held between structure 51 and the second card of connecting portion 30 is held structure 31 through the first card of seal 50 is held and is realized seal 50 to the shutoff of connecting portion 30, this kind of connected mode has great locking force, consequently, need exert great effort and damage seal 50 to seal 50 when getting rid of seal 50, can leave the difficult dismantlement vestige of wiping on the table body or seal 50 at the in-process of getting rid of seal 50, thereby promote the safety protection performance of metering device itself to a certain extent.

Referring to fig. 3, for simple and reliable fixing of the seal 50 in the connecting portion 30, in an embodiment, the first retaining structure 51 includes at least one first protrusion disposed on a side portion of the seal 50, the second retaining structure includes at least one second protrusion disposed on an inner wall of the connecting portion 30 or at an entrance of the connecting portion 30, the first protrusion is located below the second protrusion, and a top of the first protrusion is axially abutted to a bottom of the second protrusion.

Specifically, seal 50 slides down along connecting portion 30, when first bellied bottom and the bellied top contact of second, it is protruding that first arch drives the distance that seal 50 lateral part made between first arch and the connecting portion 30 inner wall to the inside shrink of seal 50, first arch is followed the bellied lateral part of second and is slided downwards, be located behind the bellied bottom below of second when first bellied top, the reconversion of seal 50 lateral part under the effect of elastic force, make first bellied top and the bellied bottom butt of second, can restrict seal 50's axial displacement. There is a tight fit between the top of the first projection and the bottom of the second projection, and friction between them can limit the axial movement of the seal 50. This enables the seal 50 to be fixed in the connecting portion 30 simply and reliably.

Wherein, in quantity, first arch can set up a plurality ofly, for example two, three, four etc. can, the second arch can keep unanimous with first arch, like this, block with the second arch through a plurality of first archs mutually, can increase the stability of being connected between seal and the connecting portion.

Referring to fig. 5 and 6, to facilitate mounting the seal 50 in the connecting portion 30, in an embodiment, the bottom of the first protrusion has a slope or a circular arc surface, and the top of the first protrusion is a plane; the top of the second protrusion is provided with an inclined surface or an arc surface, and the bottom of the second protrusion is a plane.

The first bulge is in an arc-shaped clamping hook shape, the two side surfaces have different heights, and the bottom of the first bulge is an inclined surface or an arc-shaped surface connected with the two side surfaces. The second bulge is in an inverted arc-shaped clamping hook shape, the two side surfaces have different heights, and the top of the second bulge is an inclined surface or an arc surface connected with the two side surfaces. The top of the first protrusion is a plane abutting against the second protrusion, and the bottom of the second protrusion is a plane abutting against the first protrusion.

Specifically, the connection between the slopes has a guiding function, and the bottom of the first protrusion and the top of the second protrusion are slopes, thereby facilitating the downward sliding of the seal 50 in the connection portion 30, and thus facilitating the installation of the seal 50.

In addition, the downward sliding of the seal 50 drives the downward sliding of the first protrusion, so that the top of the first protrusion is located at the bottom of the second protrusion and abuts against the second protrusion. The top of the first protrusion is a plane, the bottom of the second protrusion is a plane, the connection between the planes can increase the contact area between the surfaces, and can increase the friction between the first holding structure 51 and the second holding structure 31, thereby increasing the locking force between the first holding structure 51 and the second holding structure 31.

Referring to fig. 5 and 6, in order to increase the elasticity of the seal 50, in an embodiment, the seal 50 includes an end portion and a sidewall 8 connected to one side of the end portion, and the first retaining structure 51 is disposed outside the sidewall 8; an open slot 6 is formed in the side wall 8 along the length direction of the side wall 8.

In this embodiment, the side of the seal is in the form of the side wall 8, and specifically, when the second retaining structure 31 presses the first retaining structure 51, and the first retaining structure 51 drives the side wall 8 of the seal 50 to contract inward, the open slot 6 can prevent the side wall 8 from generating stress concentration due to contraction, so that the side walls 8 of the seal 50 on both sides of the open slot 6 have better elasticity.

Referring to fig. 7 and 8, in order to ensure the correct installation direction of the seal 50, in one embodiment, the metering device includes a positioning structure 70, and the positioning structure 70 includes a first positioning member disposed on a side portion of the seal 50 and a second positioning member disposed on an inner wall of the connecting portion 30; the first positioning piece is axially abutted against the second positioning piece.

Specifically, when the seal 50 is mounted on the connecting portion 30 in the mounting direction determined by the positioning structure 70, the first retaining structure 51 and the second retaining structure 31 can be retained, so that the mounting of the seal 50 can be completed quickly.

Referring to fig. 7 and 8, in order to prevent the seal 50 from sliding into the connecting portion 30 due to an unexpected acting force, in an embodiment, the first positioning element is a positioning groove 71 disposed on a side portion of the seal 50, the second positioning element is a positioning column or a positioning protrusion 72 disposed on an inner wall of the connecting portion 30, a direction of the positioning groove 71 is consistent with a length direction of the seal 50, and the positioning column or the positioning protrusion 72 is located in the positioning groove 71; or, the first positioning part is a positioning column or a positioning protrusion 72 arranged at the side of the seal 50, the second positioning part is a positioning groove 71 arranged on the inner wall of the connecting part 30, the direction of the positioning column or the positioning protrusion 72 is consistent with the length direction of the seal 50, and the positioning column or the positioning protrusion 72 is arranged in the positioning groove 71.

The positioning groove 71 is matched with the positioning column or the positioning protrusion, and has a guiding function, so that the seal 50 can be conveniently installed.

Specifically, the positioning groove 71 on the side of the seal 50 is snapped into the positioning post or the positioning protrusion on the inner wall of the connecting portion 30, and then the seal 50 is slid downward, so that when the positioning post or the positioning protrusion abuts against the bottom of the positioning groove 71, the seal 50 cannot slide downward, i.e., the seal 50 is mounted. This prevents the seal 50 from being slid into the connecting portion 30 by an unexpected force and leaving a mark.

To ensure that marks are left on the seal 50 during the removal of the seal 50, in one embodiment, the edges of the ends of the seal 50, and/or the edges at the entrance of the connection 30, have sharp edges.

The sharp edges are susceptible to damage leaving behind indelible marks.

Specifically, after the seal 50 is mounted in the connection portion 30, the edge of the end of the seal 50 is adjacent to the edge at the entrance of the connection portion 30, and the end of the seal 50 and the surface of the controller 2 are flush, so that when the seal 50 is removed, the applied force may damage the edge of the end of the seal 50 and/or the edge of the edge at the entrance of the connection portion 30, thereby leaving a mark.

In order to enhance the locking force between the seal 50 and the connecting portion 30, in an embodiment, the first and second retainers 51 and 31 are retained by each other by a snap amount of 0.3mm to 1 mm. This amount of bite can limit the axial movement and axial movement of the seal 50.

In order to prevent the connection between the first catch structure 51 and the second catch structure 31 from being broken, in an embodiment, the fit clearance between the side of the seal 50 and the inner wall of the connection portion 30 is less than or equal to 0.5 mm.

In particular, the fit clearance prevents a thin wire or the like from protruding into the connection portion 30 to break the connection between the first catching structure 51 and the second catching structure 31, thereby ensuring that marks are left on the seal 50 during removal of the seal 50.

For product aesthetics, in one embodiment, the top surface of the end of the seal 50 is flush with the surface of the controller 2.

It should be noted that, in this document, the described aspects of the embodiments are different, but there is a certain correlation between the embodiments, and in understanding the aspects of the present invention, the embodiments may refer to each other; moreover, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A metering instrument is characterized by comprising a base meter, wherein a controller is arranged on the base meter, a connecting part is arranged on the controller, the controller is fixed on the base meter by the connecting part, and a seal is sealed at an inlet of the connecting part; wherein the content of the first and second substances,

the side part of the seal is provided with a first clamping structure, a second clamping structure is arranged on the inner wall of the connecting part or at the entrance of the connecting part, and the first clamping structure and the second clamping structure are clamped.

2. The metering device of claim 1, wherein the first retaining structure comprises at least one first protrusion disposed on the side of the seal, the second retaining structure comprises at least one second protrusion disposed on the inner wall of the connecting portion or at the inlet of the connecting portion, the first protrusion is disposed below the second protrusion, and the top of the first protrusion is axially abutted against the bottom of the second protrusion.

3. The meter of claim 2, wherein the bottom of the first protrusion has a beveled or arcuate surface and the top of the first protrusion is planar; the top of the second protrusion is provided with an inclined surface or an arc surface, and the bottom of the second protrusion is a plane.

4. The metering device of claim 1, wherein the seal includes an end portion and a side wall connected to a side of the end portion, the first retaining structure being provided on an outer side of the side wall; an open slot is formed in the side wall along the length direction of the side wall.

5. The metering device of claim 1, comprising a positioning structure comprising a first positioning member disposed on a side portion of the seal, and a second positioning member disposed on an inner wall of the connecting portion; the first positioning piece is axially abutted against the second positioning piece.

6. The measuring instrument according to claim 5, wherein the first positioning member is a positioning groove formed in a side portion of the seal, the second positioning member is a positioning post or a positioning protrusion formed on an inner wall of the connecting portion, a direction of the positioning groove is identical to a length direction of the seal, and the positioning post or the positioning protrusion is located in the positioning groove; alternatively, the first and second electrodes may be,

the first positioning piece is arranged on the positioning column or the positioning bulge on the side part of the seal, the second positioning piece is arranged on the positioning groove on the inner wall of the connecting part, the direction of the positioning column or the positioning bulge is consistent with the length direction of the seal, and the positioning column or the positioning bulge is arranged in the positioning groove.

7. A meter according to claim 4, wherein the edge of the end of the seal, and/or the edge at the entrance of the connection, has a sharp edge.

8. The metering device of claim 1, wherein the first and second retaining structures are mutually retained in an amount of engagement of 0.3mm to 1 mm.

9. The metering device of claim 1, wherein a fit clearance between a side portion of the seal and an inner wall of the connecting portion is less than or equal to 0.5 mm.

10. The metering device of claim 1, wherein a top surface of an end of the seal is flush with a surface of the controller.

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