Gas meter

Abstract

The utility model provides a gas meter, and belongs to the technical field of gas meter valves, the gas meter comprises a meter body, a valve terminal and a sealing structure, the meter body is provided with an opening, and the inner wall of the opening is provided with a convex part. The valve terminal is provided with a connecting groove, and the protruding part is provided with a first position and a second position in the connecting groove. When the convex part is at the first position, the convex part can slide back and forth in the first direction; and when the convex part is at the second position, the convex part can slide back and forth in the second direction for limiting, so that the meter body is connected with the valve terminal. The sealing structure is arranged on the valve terminal in a sleeving mode, and when the protruding part is located at the second position, the sealing structure is used for sealing the position between the meter body and the valve terminal. In other words, the meter body and the valve terminal are connected through the convex part and the connecting groove, and the convex part slides and is limited in the connecting groove. The stability of connection between the meter body and the valve terminal and the reliability of the whole structure are enhanced through limiting. The sealing structure arranged between the meter body and the valve terminal enhances the sealing performance, reduces the possibility of gas leakage, and improves the use safety of the gas meter.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of gas meter valves, and specifically to a gas meter. Background Art

[0002] With the development of the gas meter valve industry, requirements are being put forward for the sealing performance and production efficiency of gas meters. The connection and fixing method between the valve terminal and the meter body will affect the sealing effect of the gas meter. The valve terminal and the meter body of the traditional gas meter are fixedly connected with fastening screws and sealing rings.

[0003] However, the assembly of the fastening screws increases the production steps, requires extra time and manpower, and reduces production efficiency. In addition, the matching accuracy of the screws and the terminal threads is high. If the matching is poor, it may cause poor sealing and gas leakage. Utility Model Content

[0004] An embodiment of the present application provides a gas meter, which enhances the sealing performance of the gas meter and improves its safety by improving the connection method between the valve terminal and the meter body, and adopts a snap-fit ​​method to reduce production steps, reduce assembly difficulty, and improve production efficiency.

[0005] The embodiments of the present application provide the following technical solutions to solve the above technical problems:

[0006] The present application provides a gas meter, including:

[0007] A watch body, wherein the watch body is provided with an opening, and an inner wall of the opening is provided with a convex portion protruding toward the center of the opening;

[0008] A valve terminal, wherein the valve terminal is provided with a connecting groove, the protrusion has a first position and a second position in the connecting groove, when the protrusion is in the first position, the protrusion and the connecting groove are slidably arranged in a first direction, and when the protrusion is in the second position, the protrusion and the connecting groove are slidably arranged in a second direction and are limited in the first direction, so that the meter body and the valve terminal are connected;

[0009] The first direction is an extension direction of the valve terminal, and the second direction is a rotation direction of the valve terminal;

[0010] A sealing structure is sleeved on the valve terminal and is used for sealing between the meter body and the valve terminal when the protrusion is in the second position in the connecting groove.

[0011] Beneficial effects of the embodiments of the present application: The gas meter provided by the embodiments of the present application includes a meter body, a valve terminal and a sealing structure. Among them, an opening is provided on the meter body, and a convex portion is provided on the inner wall of the opening. The valve terminal is provided with a connecting groove, and the convex portion has a first position and a second position in the connecting groove. When the convex portion is in the first position, it can slide back and forth in the first direction; when the convex portion is in the second position, it can slide back and forth in the second direction to limit the position, so that the meter body is connected to the valve terminal. The sealing structure is sleeved on the valve terminal, and when the convex portion is in the second position, it is used to seal between the meter body and the valve terminal. That is, the meter body of the gas meter is connected to the valve terminal through the convex portion and the connecting groove, and the convex portion slides and limits the position in the connecting groove. The stability of the connection between the meter body and the valve terminal and the reliability of the overall structure are enhanced by limiting the position. The sealing structure arranged between the meter body and the valve terminal enhances the sealing performance, reduces the possibility of gas leakage, and improves the safety of the use of the gas meter.

[0012] In a possible implementation manner, the connecting groove includes a guide groove and a limiting groove that are interconnected, the guide groove extends along the first direction to an end surface of the valve terminal, and the limiting groove is extended along the second direction;

[0013] The protrusion is in the first position when it is in the guide groove, and is in the second position when at least a portion of the protrusion is in the limiting groove.

[0014] In a possible implementation, a dimension of the guide groove along the second direction is smaller than a dimension of the limiting groove along the second direction.

[0015] In a possible implementation manner, along the first direction, the convex portion includes a first surface and a second surface that are opposite to each other, and the limiting groove includes a third surface and a fourth surface that are opposite to each other;

[0016] When the convex portion is at the second position, the first surface of the convex portion contacts the third surface of the limiting groove.

[0017] In a possible implementation, when the protrusion is in the second position, the second surface of the protrusion contacts the fourth surface of the limiting groove.

[0018] In a possible implementation, the limiting groove further includes a limiting surface, the limiting surface is located between the third surface and the fourth surface, and the limiting surface is used to limit the protrusion in the second direction.

[0019] In a possible implementation manner, the guide groove includes a fifth surface and a sixth surface that are opposite to each other, the sixth surface is connected to the third surface and a limiting edge is provided at the connection;

[0020] One end of the fourth surface extends to the bottom of the guide groove.

[0021] In a possible implementation manner, the valve terminal includes a plug-in column and a base connected to the plug-in column, the plug-in column is plugged into the opening of the meter body, and the base is located inside the meter body;

[0022] The connecting groove is arranged on the outer peripheral surface of the plug-in column, and the terminal is arranged on the top end surface of the plug-in column.

[0023] In a possible implementation manner, at least one groove is provided on an end surface of the base facing the plug-in column, and the groove is used to accommodate the sealing structure.

[0024] In a possible implementation manner, an annular convex rib is provided in the groove of the base, and the inner diameter of the annular convex rib is larger than the diameter of the opening of the watch body;

[0025] The annular rib is used to separate the groove into a first annular groove and a second annular groove, and the second annular groove is located outside the first annular groove;

[0026] The sealing structure is disposed in at least one of the first annular groove and the second annular groove.

[0027] In addition to the technical problems solved by the present application, the technical features that constitute the technical solution, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by a gas meter provided by the present application, other technical features included in the technical solution, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the present application. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application for those skilled in the art by referring to specific embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of a gas meter provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the structure of a valve terminal of a gas meter provided in an embodiment of the present application;

[0031] Figure 3A schematic diagram of the structure of a portion of a gas meter provided in an embodiment of the present application;

[0032] Figure 4 A first cross-sectional view of a gas meter provided in an embodiment of the present application;

[0033] Figure 5 A second cross-sectional view of the gas meter provided in an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 100-surface body; 110-opening; 120-convex part;

[0036] 121- first side; 122- second side;

[0037] 200-valve terminal; 210-connection groove; 220-limiting groove; 230-guide groove; 240-limiting edge; 250-plug column; 260-terminal; 270-base; 280-groove;

[0038] 221-third surface; 222-fourth surface; 223-limiting surface;

[0039] 231-5th page; 232-6th page;

[0040] 271 - annular rib; 272 - first annular groove; 273 - second annular groove;

[0041] 300-Sealed structure. DETAILED DESCRIPTION

[0042] With the development of the gas meter valve industry, sealing performance and production efficiency have become key requirements. Traditional gas meters use fastening screws and sealing rings for fixed connection, but this method increases production steps, reduces efficiency, and may cause sealing problems due to poor matching, resulting in gas leakage.

[0043] In view of this, the embodiment of the present application provides an opening with a convex portion on the meter body, and provides a connection groove on the valve terminal, and the convex portion slides in the connection groove to a first position and a second position, so as to achieve the limitation of the convex portion in the connection groove. The stability of the connection between the meter body and the valve terminal and the reliability of the overall structure are enhanced by the limitation. The sealing structure provided between the meter body and the valve terminal enhances the sealing performance, reduces the possibility of gas leakage, and improves the safety of the gas meter.

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] Figure 1 A schematic diagram of the structure of a gas meter provided in an embodiment of the present application, Figure 2 A schematic diagram of the structure of the valve terminal of the gas meter provided in the embodiment of the present application, Figure 3 A schematic diagram of the structure of a portion of a gas meter provided in an embodiment of the present application, Figure 4 A first cross-sectional view of a gas meter provided in an embodiment of the present application, Figure 5 A second cross-sectional view of the gas meter provided in an embodiment of the present application.

[0046] The embodiment of the present application provides a gas meter, which includes a meter body 100, a valve terminal 200 and a sealing structure 300. The meter body 100 is provided with an opening 110, and the inner wall of the opening 110 is provided with a convex portion 120 protruding toward the center of the opening 110. The valve terminal 200 is provided with a connecting groove 210, and the convex portion 120 has a first position and a second position in the connecting groove 210. When the convex portion 120 is in the first position, the convex portion 120 and the connecting groove 210 are slidably arranged in the first direction. When the convex portion 120 is in the second position, the convex portion 120 and the connecting groove 210 are slidably arranged in the second direction and are limited in the first direction, so that the meter body 100 and the valve terminal 200 are connected. The first direction is the extension direction of the valve terminal 200, and the second direction is the rotation direction of the valve terminal 200. The sealing structure 300 is sleeved on the valve terminal 200 , and is used to seal between the meter body 100 and the valve terminal 200 when the protrusion 120 is at the second position in the connecting groove 210 .

[0047] like Figure 1 As shown, the gas meter includes a meter body 100, a valve terminal 200 and a sealing structure 300, and only part of the meter body 100 is shown in the figure. Schematically, the bottom plate of the meter body 100 is connected to the valve terminal 200, and a sealing structure 300 is provided between the meter body 100 and the valve terminal 200 to prevent gas leakage. An opening 110 is provided on the meter body 100, and a protruding convex portion 120 is provided on the inner wall of the opening 110. In the example of the present application, the number of the protrusions 120 is two, and the protrusions 120 protrude toward the center of the opening 110, and the two protrusions 120 are arranged symmetrically with respect to the center.

[0048] It should be noted that the number of the protrusions 120 can be multiple, not limited to two, such as three. In the example of the present application, the number of the protrusions 120 is two, and the two protrusions 120 are arranged in a central symmetric manner in the opening 110. It can be understood that the central symmetric arrangement or the axisymmetric arrangement of the protrusions makes the connection between the meter body 100 and the valve terminal 200 tighter, which is beneficial to the overall stability and sealing performance.

[0049] Please continue reading Figure 1 ,like Figure 1 As shown, a connection groove 210 is provided on the valve terminal 200. The connection groove 210 is used for the convex portion 120 of the opening 110 of the meter body 100 to slide and limit in the connection groove 210 when the meter body 100 is connected to the valve terminal 200. It can be understood that the convex portion 120 has a first position and a second position in the connection groove 210. When the convex portion 120 is in the first position in the connection groove 210, the convex portion 120 can slide up and down in the Z-axis direction in the connection groove 210. When the convex portion 120 is in the second position in the connection groove 210, the convex portion 120 can rotate along the outer peripheral surface of the valve terminal 200 in the connection groove 210, and when the convex portion 120 is in the second position in the connection groove 210, it is set to limit in the Z-axis direction.

[0050] It should be noted that the number of the connection grooves 210 provided on the valve terminal 200 can be multiple. In the present application example, the valve terminal 200 is provided with two connection grooves 210, and the two connection grooves 210 are arranged symmetrically. The number of the connection grooves 210 needs to be consistent with the number of the inner convex parts 120 of the opening 110 of the meter body 100.

[0051] For example, Figure 1 As shown, when the meter body 100 is connected to the valve terminal 200, the sealing structure 300 is located between the meter body 100 and the valve terminal 200. When the protrusion 120 is located in the connecting groove 210 and is in the second position, the sealing structure 300 is clamped between the meter body 100 and the valve terminal 200. That is, when the protrusion 120 is located in the connecting groove 210 and is in the second position, the top surface of the sealing structure 300 is in contact with the meter body 100, and the bottom surface of the sealing structure 300 is in contact with the valve terminal 200.

[0052] In some embodiments of the present application, the connecting groove 210 includes a communicating guide groove 230 and a limiting groove 220, the guide groove 230 extends along a first direction to an end surface of the valve terminal 200, the limiting groove 220 extends along a second direction, and the dimension of the guide groove 230 along the second direction is smaller than the dimension of the limiting groove 220 along the second direction. The convex portion 120 is in a first position in the guide groove 230, and at least a portion of the convex portion 120 is in a second position when it is in the limiting groove 220.

[0053] For example, Figure 2 As shown, the connection groove 210 includes a guide groove 230 and a limit groove 220, and the guide groove 230 is connected to the limit groove 220. The guide groove 230 extends along the positive direction of the Z axis to the end surface of one end of the valve terminal 200, and the limit groove 220 extends along the negative direction of the X axis and is arranged on the surface of the terminal. The guide groove 230 extends to the end surface of one end of the valve terminal 200, and the protrusion 120 can enter the connection groove 210 from there.

[0054] Please continue reading Figure 2 ,like Figure 2 As shown, the dimension d1 of the guide groove 230 along the rotation direction is smaller than the dimension d2 of the limiting groove 220 along the rotation direction. It can be understood that the dimension d1 of the guide groove 230 is small, which ensures the accurate movement of the convex part 120 along the Z-axis direction of the guide groove 230. The dimension d2 of the limiting groove 220 is large, which can provide a certain range of safety buffer, accommodate the slight displacement of the convex part 120 caused by slight impact or vibration of the gas meter during use, and improve the reliability of the gas meter during use.

[0055] It should be noted that the fifth surface 231 of the guide groove 230 extends along the negative direction of the Z axis to the fourth surface 222 of the limiting groove 220, dividing the connection groove 210 into two spaces. In the space along the positive direction of the X axis, the protrusion 120 slides up and down along the Z axis to the first position. The protrusion 120 slides up and down in the guide groove 230, and the protrusion 120 can be guided to enter the connection groove 210. In the space along the negative direction of the X axis, the protrusion 120 slides back and forth along the rotation direction of the valve terminal 200 to the second position. The protrusion 120 is prevented from moving in the limiting groove 220.

[0056] It is understandable that when the protrusion 120 is in the first position in the guide groove 230, at least part of the protrusion 120 is in the second position in the limiting groove 220. In other words, a part of the protrusion 120 is in the guide groove 230, and another part of the protrusion 120 is in the limiting groove 220.

[0057] In some embodiments of the present application, along the first direction, the protrusion 120 includes a first surface 121 and a second surface 122 opposite to each other, and the limiting groove 220 includes a third surface 221 and a fourth surface 222 opposite to each other. When the protrusion 120 is in the second position, the first surface 121 of the protrusion 120 contacts the third surface 221 of the limiting groove 220.

[0058] For example, Figure 3 As shown, along the Z-axis direction, the convex portion 120 includes a first surface 121 and a second surface 122 that are arranged opposite to each other. That is, along the positive direction of the Z-axis is the first surface 121 of the convex portion 120, and along the negative direction of the Z-axis is the second surface 122 of the convex portion 120. Figure 2As shown, the limiting groove 220 along the Z axis direction includes a third surface 221 and a fourth surface 222 arranged opposite to each other. That is, the third surface 221 of the limiting groove 220 along the positive direction of the Z axis is the fourth surface 222 of the limiting groove 220 along the negative direction of the Z axis.

[0059] For example, Figure 4 and Figure 5 As shown, when the convex portion 120 is completely located in the limiting groove 220, the sealing structure 300 contacts the extended surface of the second surface 122 of the convex portion 120 on the watch body 100 by means of the resilience of the sealing structure 300. When the convex portion 120 is in the second position, the first surface 121 of the convex portion 120 contacts the third surface 221 of the limiting groove 220.

[0060] In some embodiments of the present application, when the protrusion 120 is in the second position, the second surface 122 of the protrusion 120 contacts the fourth surface 222 of the limiting groove 220. It should be noted that the second surface of the protrusion 120 is not limited to contacting the fourth surface 222 of the limiting groove 220. Figure 4 or Figure 5 As shown, the sealing structure 300 is pressed toward the base 270 by the watch body 100 , and the second surface 122 of the protrusion 120 is not in contact with the fourth surface 222 of the limiting groove 220 .

[0061] In some embodiments of the present application, Figure 2 As shown, the limiting groove 220 further includes a limiting surface 223, which is located between the third surface 221 and the fourth surface 222, and the limiting surface 223 is used to limit the convex portion 120 in the second direction. When the convex portion 120 is completely located in the limiting groove 220 and is in the second position, the convex portion 120 contacts the limiting surface 223, and the limiting surface 223 of the limiting groove 220 accurately limits the convex portion 120 along the rotation direction of the terminal, further preventing the convex portion 120 from sliding or moving, and improving the stability of the connection between the meter body 100 and the valve terminal 200.

[0062] In some embodiments of the present application, the guide groove 230 includes a fifth surface 231 and a sixth surface 232 opposite to each other, the sixth surface 232 is connected to the third surface 221, and a limiting edge 240 is provided at the connection between the sixth surface 232 and the third surface 221. One end of the fourth surface 222 extends to the bottom of the guide groove 230.

[0063] For example, Figure 2As shown, along the X-axis direction, the guide groove 230 includes a fifth surface 231 and a sixth surface 232 that are arranged opposite to each other. That is, the sixth surface 232 of the guide groove 230 is along the positive direction of the X-axis, and the fifth surface 231 of the guide groove 230 is along the negative direction of the X-axis. The sixth surface 232 of the guide groove 230 is connected to the third surface 221 of the limiting groove 220, and a limiting rib 240 for limiting the movement of the convex part 120 is also provided at the connection between the sixth surface 232 of the guide groove 230 and the third surface 221 of the limiting groove 220. The limiting rib 240 and the limiting surface 223 of the limiting groove 220 can prevent the convex part 120 from moving back and forth in the limiting groove 220 along the rotation direction of the valve terminal 200.

[0064] In some embodiments of the present application, Figure 2 As shown, the valve terminal 200 includes a plug-in column 250 and a base 270 connected to the plug-in column 250. The plug-in column 250 is inserted into the opening 110 of the meter body 100, and the base 270 is located in the meter body 100. A connection groove 210 is provided on the outer peripheral surface of the plug-in column 250, and a terminal 260 is also provided on the top end surface of the plug-in column 250 of the valve terminal 200.

[0065] For example, Figure 2 As shown, the valve terminal 200 includes a plug-in column 250 and a base 270, and the plug-in column 250 is connected to the base 270. The outer peripheral surface of the plug-in column 250 is provided with a connecting groove 210 connected to the protrusion 120 of the meter body 100. Figure 1 As shown, the plug post 250 is inserted into the opening 110 of the meter body 100, and the meter body 100 is connected to the valve terminal 200 through the convex portion 120 of the opening 110 and the connecting groove 210 of the plug post 250. The convex portion 120 of the opening 110 of the meter body 100 and the connecting groove 210 of the valve terminal 200 are matched with each other, thereby increasing the stability of the connection between the meter body 100 and the valve terminal 200.

[0066] For example, Figure 1 and Figure 2 As shown, there is a terminal 260 on the top end surface of the plug-in column 250 of the valve terminal 200, and the terminal 260 is used to electrically connect the valve terminal 200 with the pipeline outside the meter body 100 to transmit signals to control the opening and closing of the valve. It should be noted that the number of terminals 260 can be any number. In the example of the present application, the number of terminals 260 is two, but it is not limited to two, for example, it can also be three.

[0067] In some embodiments of the present application, at least one groove 280 is provided on the end surface of the base 270 facing the plug-in column 250, and the groove 280 is used to accommodate the sealing structure 300. It can be understood that the sealing structure 300 is fixed between the meter body 100 and the valve terminal 200 by forming a squeezing force between the meter body 100 and the valve terminal 200, and the groove 280 can prevent the sealing structure 300 from being offset when subjected to the squeezing force.

[0068] It should be noted that the number of the grooves 280 may be one or more, for example, the number of the grooves 280 may be two. By providing an annular rib 271 in the groove 280 of the base 270, the groove 280 is divided into a first annular groove 272 and a second annular groove 273 by the annular rib 271. Figure 2 , Figure 4 and Figure 5 As shown, the first annular groove 272 is an inner ring, the second annular groove 273 is an outer ring, and the second annular groove 273 is located outside the first annular groove 272 .

[0069] It is understandable that the inner diameter of the annular rib 271 is larger than the diameter of the opening 110 of the meter body 100, which can prevent the sealing structure 300 located in the first annular groove 272 from shifting and prevent the sealing structure 300 from moving away from the opening 110 of the meter body 100 to affect the airtightness of the gas meter.

[0070] In this application example, Figure 4 and Figure 5 As shown, the inner diameter of the first annular groove 272 is smaller than that of the second annular groove 273, and the second annular groove 273 is sleeved outside the first annular groove 272. A sealing structure 300 is provided in at least one of the first annular groove 272 and the second annular groove 273. For example, Figure 4 and Figure 5 As shown, a sealing structure 300 is provided in the first annular groove 272. Alternatively, a sealing structure 300 may be provided in the second annular groove 273. Alternatively, a sealing structure 300 may be provided in the first annular groove 272 and the second annular groove 273, respectively, to further improve the sealing performance between the meter body 100 and the valve terminal 200. The valve terminal 200 is connected to the meter body 100, and a squeeze force is applied to the sealing structure 300 to ensure a tight connection and good sealing performance between the valve terminal 200 and the meter body 100, which helps prevent dust from entering the meter body 100 or gas leakage, and can also effectively buffer external impact or pressure, protecting the electronic components inside the meter body 100 from damage.

[0071] It is understandable that the sealing structure 300 can be an elastic sealing rubber ring. When the convex portion 120 is in the second position, the valve terminal 200 is closely connected to the meter body 100, and the sealing structure 300 is located in at least one of the first annular groove 272 and the second annular groove 273 of the base 270, and the sealing structure 300 is clamped between the meter body 100 and the base 270 of the valve terminal 200 by the extrusion force. The sealing performance and stability between the valve terminal 200 and the meter body 100 are enhanced, and the safety and reliability of the equipment are improved.

[0072] Among them, the terms "upper" and "lower" are used to describe the relative position relationship of each structure in the accompanying drawings, which is only for the convenience of description and is not used to limit the scope of implementation of the present application. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the present application without substantially changing the technical content.

[0073] It should be noted that: in this application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0074] In addition, in this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A gas meter, characterized in that: include: A watch body, wherein the watch body is provided with an opening, and an inner wall of the opening is provided with a convex portion protruding toward the center of the opening; A valve terminal, wherein the valve terminal is provided with a connecting groove, the protrusion has a first position and a second position in the connecting groove, when the protrusion is in the first position, the protrusion and the connecting groove are slidably arranged in a first direction, and when the protrusion is in the second position, the protrusion and the connecting groove are slidably arranged in a second direction and are limited in the first direction, so that the meter body and the valve terminal are connected; The first direction is an extension direction of the valve terminal, and the second direction is a rotation direction of the valve terminal; A sealing structure is sleeved on the valve terminal and is used for sealing between the meter body and the valve terminal when the protrusion is in the second position in the connecting groove.

2. The gas meter according to claim 1, characterized in that: The connecting groove comprises a guide groove and a limiting groove which are connected to each other, the guide groove extends along the first direction to an end surface of the valve terminal, and the limiting groove is extended along the second direction; The protrusion is in the first position when it is in the guide groove, and is in the second position when at least a portion of the protrusion is in the limiting groove.

3. The gas meter according to claim 2, characterized in that: A dimension of the guide groove along the second direction is smaller than a dimension of the limiting groove along the second direction.

4. The gas meter according to claim 2, characterized in that: Along the first direction, the protrusion includes a first surface and a second surface opposite to each other, and the limiting groove includes a third surface and a fourth surface opposite to each other; When the convex portion is at the second position, the first surface of the convex portion contacts the third surface of the limiting groove.

5. The gas meter according to claim 4, characterized in that: When the convex portion is at the second position, the second surface of the convex portion contacts the fourth surface of the limiting groove.

6. The gas meter according to claim 5, characterized in that: The limiting groove further includes a limiting surface, the limiting surface is located between the third surface and the fourth surface, and the limiting surface is used to limit the protrusion in the second direction.

7. The gas meter according to claim 6, characterized in that: The guide groove comprises a fifth surface and a sixth surface which are opposite to each other, the sixth surface is connected to the third surface and a limiting edge is provided at the connection; One end of the fourth surface extends to the bottom of the guide groove.

8. The gas meter according to any one of claims 1 to 7, characterized in that: The valve terminal comprises a plug-in column and a base connected to the plug-in column, the plug-in column is plugged into the opening of the meter body, and the base is located inside the meter body; The connecting groove is arranged on the outer peripheral surface of the plug-in column, and the terminal is arranged on the top end surface of the plug-in column.

9. The gas meter according to claim 8, characterized in that: At least one groove is provided on an end surface of the base facing the plug-in column, and the groove is used to accommodate the sealing structure.

10. The gas meter according to claim 9, characterized in that: An annular convex rib is provided in the groove of the base, and the inner diameter of the annular convex rib is larger than the diameter of the opening of the watch body; The annular rib is used to separate the groove into a first annular groove and a second annular groove, and the second annular groove is located outside the first annular groove; The sealing structure is disposed in at least one of the first annular groove and the second annular groove.

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