CN218096706U - Stop valve assembly and air conditioner with same - Google Patents
Stop valve assembly and air conditioner with same Download PDFInfo
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- CN218096706U CN218096706U CN202222314718.0U CN202222314718U CN218096706U CN 218096706 U CN218096706 U CN 218096706U CN 202222314718 U CN202222314718 U CN 202222314718U CN 218096706 U CN218096706 U CN 218096706U
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Abstract
The utility model discloses a stop valve assembly and air conditioner that has it. The stop valve assembly comprises a stop valve body, a first pipeline assembly and a second pipeline assembly, wherein the stop valve body is provided with a first valve body interface and a second valve body interface; the first pipeline assembly comprises a first pipeline and a first connecting sleeve, the first pipeline is fixed with the first connector of the valve body, and the first connecting sleeve is fixed with the first pipeline; the second pipeline assembly comprises a second pipeline and a second connecting sleeve, the second pipeline is fixed with the second connector of the valve body, and the second connecting sleeve is fixed with the second pipeline; the material of the first pipeline and the material of the second pipeline comprise a first metal, and the material of the first connecting sleeve and the second connecting sleeve comprise a second metal. According to the utility model discloses a stop valve through the first metal of reasonable selection and second metal, can reduce stop valve assembly's cost to can reduce stop valve assembly and the welding degree of difficulty of other pipelines.
Description
Technical Field
The utility model relates to a stop valve technical field particularly, relates to a stop valve assembly and air conditioner that has it.
Background
In an air conditioning system, a shut-off valve is an essential component, and the shut-off valve is usually connected to other devices in the air conditioning system by using a piping assembly. The existing piping assembly for connecting the stop valve is a copper pipe so as to be connected with other copper pipes in the air conditioning system. However, although the copper pipe has the advantages of good heat conductivity, easy welding, difficult occurrence of welding seams and the like, the copper pipe is expensive, so that the overall production cost of the air conditioning system is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the utility model provides a stop valve assembly and air conditioner that has it can reduce stop valve assembly's cost to can reduce the welding degree of difficulty of stop valve assembly and other pipelines.
The utility model also provides an air conditioner of having above-mentioned stop valve subassembly.
According to the embodiment of the utility model, the stop valve component comprises a stop valve body, a first pipeline component and a second pipeline component, wherein the stop valve body is provided with a first valve body interface and a second valve body interface; the first pipeline assembly comprises a first pipeline and a first connecting sleeve, the first pipeline is fixed with the first connector of the valve body, and the first connecting sleeve is fixed with the first pipeline; the second pipeline assembly comprises a second pipeline and a second connecting sleeve, the second pipeline is fixed with the second connector of the valve body, and the second connecting sleeve is fixed with the second pipeline; the material of the first pipeline and the second pipeline comprises a first metal, and the material of the first connecting sleeve and the second connecting sleeve comprises a second metal.
According to the utility model discloses stop valve subassembly, first adapter sleeve and second adapter sleeve mainly adopt the second metal, and first pipeline and second pipeline mainly adopt first metal, according to the lower first metal of user's demand selection cost, can reduce stop valve subassembly's cost to according to the easy welded second metal of user's demand selection, can reduce the welding degree of difficulty of stop valve subassembly and other pipelines.
According to some embodiments of the invention, the first pipeline comprises: the first pipeline body and the first pipe diameter change portion of the one end of the first interface of the valve body are arranged to be kept away from by the first pipeline body, the pipe diameter of the first pipe diameter change portion is smaller than that of the first pipeline body, and the first connecting sleeve is fixedly sleeved outside the first pipe diameter change portion and is fixedly welded.
According to some embodiments of the utility model, first pipeline body with connect through first changeover portion between the first pipe diameter change portion, the tip of first connecting sleeve stop to in first changeover portion.
According to some embodiments of the utility model, first adapter sleeve with the axial coincidence length of first pipe diameter change portion is not less than 3mm.
According to some embodiments of the utility model, still be provided with the location convex part on the internal wall face or the outer wall face of first adapter sleeve.
According to some embodiments of the invention, the positioning protrusion is configured as a plurality of positioning protrusions arranged at intervals in a circumferential direction of the first connecting sleeve; or the positioning projection is configured as an annular projection that is continuous in the circumferential direction of the first coupling sleeve.
According to the utility model discloses a some embodiments, the second adapter sleeve includes second adapter sleeve body and second pipe diameter change portion, the pipe diameter that the second pipe diameter changes the portion is less than the pipe diameter of second adapter sleeve body, the fixed cover of first pipeline is established the inside and the welded fastening of second pipe diameter change portion, just first pipeline stretches into partially in the second adapter sleeve is originally internal, the outer wall of first pipeline with the internal face of second adapter sleeve body is separated.
According to the utility model discloses a some embodiments, the second adapter sleeve body with connect through the second changeover portion between the second pipe diameter change portion, the outer wall of second pipeline with the internal face of second changeover portion separates.
According to some embodiments of the invention, the first metal is iron and the second metal is copper.
The utility model discloses the air conditioner of another aspect embodiment, including foretell stop valve subassembly.
The stop valve assembly in the air conditioner is low in manufacturing cost, and the stop valve assembly is low in welding difficulty with other pipelines.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic view of a shut-off valve assembly;
FIG. 2 isbase:Sub>A cross-sectional view of the shut-off valve assembly taken along A-A;
FIG. 3 is an enlarged view of a portion of FIG. 2 at B;
fig. 4 is a partially enlarged view at C in fig. 2.
Reference numerals:
the stop valve comprises a stop valve body 1, a first valve body interface 11, a second valve body interface 12, a first pipeline assembly 2, a first pipeline 21, a first connecting sleeve 22, a first pipeline body 23, a first pipe diameter change part 24, a first transition section 25, a positioning convex part 26, a second pipeline assembly 3, a second pipeline 31, a second connecting sleeve 32, a second connecting sleeve body 33, a second pipe diameter change part 34, a second transition section 35, a stop valve cap 4, a valve rod 5 and a valve core 6.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
A stop valve assembly and an air conditioner having the same according to embodiments of the present invention will be described in detail with reference to fig. 1 to 4.
Referring to fig. 1 to 2, a stop valve assembly according to the present invention may include a stop valve body 1, a first pipe assembly 2, and a second pipe assembly 3.
The stop valve body has a first valve body port 11 and a second valve body port 12, and optionally, the stop valve body 1 is made of brass or steel.
The first pipeline assembly 2 comprises a first pipeline 21 and a first connecting sleeve 22, the first pipeline 21 is fixed with the first connector 11 of the valve body, the first connecting sleeve 22 is fixed with the first pipeline 21, optionally, one end of the first pipeline 21 is welded and fixed with the first connector 11 of the valve body or fixed through threads, and the other end of the first pipeline 21 is welded and fixed with the first connecting sleeve 22 or fixed through threads.
The second pipeline assembly 3 includes a second pipeline 31 and a second connecting sleeve 32, the second pipeline 31 is fixed to the second valve body port 12, the second connecting sleeve 32 is fixed to the second pipeline 31, optionally, one end of the second pipeline 31 is welded to the second valve body port 12 or fixed through a thread, and the other end of the second pipeline 31 is welded to the second connecting sleeve 32 or fixed through a thread.
Wherein the material of the first pipeline 21 and the second pipeline 31 comprises a first metal, and the material of the first connecting sleeve 22 and the second connecting sleeve 32 comprises a second metal. The first metal with lower cost can be selected according to the requirements of users, and the cost of the first metal is lower than that of the second metal, so that the cost of the stop valve assembly can be reduced.
In one example, the first pipe 21 and the first coupling sleeve 22 are welded. The welding temperature of the second metal may be lower than the welding temperature of the first metal, so that the welding of the first pipe 21 and the first connecting sleeve 22 may be completed by a welding method with a higher welding temperature, such as furnace welding, and then the welding of the first connecting sleeve 22 and another pipe using the second metal may be completed by a welding method with a lower welding temperature, such as flame welding.
In one example, the second pipe 31 and the second connection sleeve 32 are welded. The welding temperature of the second metal may be lower than the welding temperature of the first metal, so that the welding of the second pipeline 31 and the second connecting sleeve 32 may be completed first by using a welding method with a higher welding temperature, such as furnace welding, and then the welding of the second connecting sleeve 32 and other pipelines using the second metal may be completed by using a welding method with a lower welding temperature, such as flame welding.
In some embodiments of the present invention, the first metal is iron and the second metal is copper. The cost of iron is lower than that of copper, and the manufacturing cost of the stop valve component can be reduced.
The utility model discloses use first metal to be iron, the second metal is copper to explain as the example, like this, the essential material of first pipeline 21 includes iron, can also include other materials, for example carbon, and like this, first pipeline 21 is the steel pipe, and the material of steel pipe can specifically be iron-bearing material such as carbon steel, stainless steel. Of course, the first pipe 21 may be a pure iron pipe. The primary material of the first connecting sleeve 22 includes copper, and may include other materials, however, the first connecting sleeve 22 may also be pure copper, and for convenience of description, the first connecting sleeve 22 is referred to as a copper sleeve.
When the second metal is copper, similarly, the main material of the second connection sleeve 32 includes copper, and may also include other materials, of course, the second connection sleeve 32 may also be pure copper, and for convenience of description, the second connection sleeve 32 is called a copper sleeve.
In some embodiments, the material of the second pipeline 31 includes a first metal, when the first metal is iron, the main material of the second pipeline 31 includes iron, and may further include other materials, such as carbon, so that the second pipeline 31 is a steel pipe, and the material of the steel pipe may specifically be a ferrous material such as carbon steel, stainless steel, and the like. Of course, the second pipe 31 may also be a pure iron pipe.
In some alternative embodiments, the welding temperature between the first metal and the second metal is higher than the welding temperature between the second metal and the second metal, so that the first metal and the second metal can be welded by high-temperature welding, furnace welding and the like, and the second metal can be welded by low-temperature welding such as brazing and the like.
The welding temperature between the steel pipe and the copper sleeve is higher than that between the copper sleeve and the copper sleeve, and optionally, welding modes such as high-frequency welding, furnace welding and the like are adopted between the steel pipe and the copper sleeve. The first connecting sleeve 22 and the second connecting sleeve 32 are copper sleeves, and the welding temperature of the copper sleeves is low, so that the copper sleeves can be conveniently connected with other copper pipes in an air conditioning system.
In some alternative embodiments, the first metal may also be chromium, and the second metal may also be aluminum, which will not be described herein.
According to the utility model discloses a stop valve subassembly, first adapter sleeve 22 and second adapter sleeve 32 mainly adopt the second metal, and first pipeline 21 and second pipeline 31 mainly adopt first metal, and when the cost of first metal is lower than the cost of second metal, can reduce stop valve subassembly's cost, when the welding temperature of second metal is low, can reduce the welding degree of difficulty of stop valve subassembly and other pipelines.
In some embodiments of the present invention, as shown in fig. 1, 2 and 4, the first pipeline 21 includes: first pipeline body 23 and the first pipe diameter change portion 24 that sets up the one end of keeping away from the first interface 11 of valve body at first pipeline body 23, the pipe diameter of first pipe diameter change portion 24 is less than the pipe diameter of first pipeline body 23, the fixed cover of first connecting sleeve 22 is established in the outside of first pipe diameter change portion 24 and welded fastening, like this, the junction of first connecting sleeve 22 and first pipeline 21 is bilayer structure, makes the connection between first connecting sleeve 22 and the first pipeline 21 more firm. Meanwhile, the joint of the first connecting sleeve 22 and the first pipeline 21 is broken and leaked at the joint of the first connecting sleeve 22 and the first pipeline 21 by the overlapped section of the first connecting sleeve 22 and the first pipe diameter changing part 24.
In some embodiments of the present invention, as shown in fig. 1, fig. 2 and fig. 4, the first pipe body 23 and the first pipe diameter changing portion 24 are connected by a first transition section 25, and the end of the first connecting sleeve 22 is stopped at the first transition section 25. The first connecting sleeve 22 is connected to the first pipe diameter changing portion 24, and the first transition section 25 can limit the first connecting sleeve 22.
In some embodiments of the present invention, as shown in fig. 1, 2 and 4, the axial overlapping length of the first connection sleeve 22 and the first pipe diameter changing portion 24 is not less than 3mm. Alternatively, the axial overlapping length of the first connecting sleeve 22 and the first pipe diameter changing part 24 is 3mm, 4mm, 5mm, or the like, or other length larger than 3mm. The longer the axial overlapping length of the first coupling sleeve 22 and the first pipe diameter changing portion 24 is, the more firmly the first coupling sleeve 22 and the first pipe diameter changing portion 24 are connected.
In some embodiments of the present invention, the first connecting sleeve 22 is further provided with a positioning protrusion 26 on the inner wall surface or the outer wall surface. When the first connecting sleeve 22 is connected to other pipes in the air conditioning system, the positioning protrusion 26 can limit the other pipes. Specifically, as shown in fig. 1, 2, and 4, when the other pipe is connected to the outer wall surface of the first joint sleeve 22, the positioning protrusion 26 is located on the outer wall surface of the first joint sleeve 22; in some embodiments not shown, other conduits may be connected to the inner wall surface of the first coupling sleeve 22, and the positioning protrusion 26 is located on the inner wall surface of the first coupling sleeve 22.
In some embodiments of the present invention, the positioning protrusions 26 are configured as a plurality of positioning protrusions arranged at intervals in the circumferential direction of the first connecting sleeve 22; or the positioning projection 26 is configured as an annular projection that is continuous in the circumferential direction of the first coupling sleeve 22. Alternatively, in some embodiments, the positioning protrusions 26 are configured as a plurality of positioning protrusions that are arranged at intervals in the circumferential direction of the first coupling sleeve 22. Optionally, a plurality of positioning protrusions are uniformly arranged along the circumferential direction of the first connecting sleeve 22, so that when the end portions of other pipelines are positioned, the positioning points are uniformly distributed, and the positioning effect is better.
In some embodiments, as shown in fig. 1, the positioning protrusion 26 is configured as a circular protrusion arranged in a complete circle, and the circular protrusion is continuously protruded in the circumferential direction of the first coupling sleeve 22, so that the end of another pipeline can be positioned in the complete circle direction, and the positioning effect is better.
In some embodiments of the present invention, referring to fig. 2 and 3, the second connecting sleeve 32 includes a second connecting sleeve body 33 and a second pipe diameter changing portion 34, the pipe diameter of the second pipe diameter changing portion 34 is smaller than the pipe diameter of the second connecting sleeve body 33, the second pipe 31 is fixedly sleeved inside the second pipe diameter changing portion 34 and is welded and fixed, so that the joint of the second pipe 31 and the second connecting sleeve 32 is of a double-layer structure, and the joint strength of the second pipe 31 and the second joint is larger. Meanwhile, the overlapping section of the second pipeline 31 and the second pipe diameter changing part 34 reduces the fracture risk and the leakage risk at the joint of the second pipeline 31 and the second connecting sleeve 32. The second pipeline 31 partially extends into the second connecting sleeve body 33, the outer wall surface of the second pipeline 31 is separated from the inner wall surface of the second connecting sleeve body 33, so that redundant solder can be intercepted when the second pipeline 31 is welded with an external connecting pipe, the solder is prevented from entering the second pipeline 31, meanwhile, a space capable of containing the solder is formed between the outer wall surface of the second pipeline 31 and the inner wall surface of the second connecting sleeve body 33, and the connection between the second pipeline 31 and the second connecting sleeve 32 can be further strengthened after the solder is cooled.
In some embodiments of the present invention, referring to fig. 2 and 3, the second connecting sleeve body 33 and the second pipe diameter changing portion 34 are connected by a second transition section 35, optionally, in some embodiments, the second transition surface is an inclined surface, and the outer wall surface of the second pipeline 31 is separated from the inner wall surface of the second transition section 35. The outer wall surface of the second pipeline 31 and the second transition section 35 form a space capable of containing solder, and the solder can further strengthen the connection between the second pipeline 31 and the second connecting sleeve 32 after cooling.
The stop valve assembly of one embodiment of the present invention is described in detail below.
The stop valve assembly comprises a stop valve body 1, a first pipeline assembly 2 and a second pipeline assembly 3. The stop valve body 1 is made of brass, and the stop valve body 1 is provided with a first valve body connector 11 and a second valve body connector 12. First pipeline subassembly 2 includes first pipeline 21 and first adapter sleeve 22, first pipeline 21 includes first pipeline body 23 and first pipe diameter change portion 24, first pipeline body 23 is connected through first changeover portion 25 with first pipe diameter change portion 24, the diameter ratio of first pipe diameter change portion 24 is little than the diameter of first pipeline body 23, the one end and the first interface 11 welded fastening of valve body that first pipe diameter change portion 24 was kept away from to first pipeline 21 main part, first adapter sleeve 22 connects the outer wall at first pipe diameter change portion 24, first adapter sleeve 22's outer wall is equipped with round annular arch. The second pipeline component 3 includes a second pipeline 31 and a second connecting sleeve 32, the second connecting sleeve 32 includes a second connecting sleeve body 33 and a second pipe diameter changing portion 34, the pipe diameter of the second pipe diameter changing portion 34 is smaller than the pipe diameter of the second connecting sleeve body 33, the second pipeline 31 is fixedly sleeved inside the second pipe diameter changing portion 34 and welded and fixed, and the other end of the second pipeline 31 is connected to the second connector 12 of the valve body. The second connecting sleeve body 33 and the second pipe diameter changing part 34 are connected through a second transition section 35, the second transition section 35 is an inclined surface, the second pipeline 31 partially extends into the second connecting sleeve body 33, and the outer wall surface of the second pipeline 31 is separated from the inner wall surfaces of the second transition section 35 and the second connecting sleeve body 33. The first pipeline 21 and the second pipeline 31 are stainless steel pipes, the first connecting sleeve 22 and the second connecting sleeve 32 are copper sleeves, the stainless steel pipes and the copper sleeves are welded by furnace welding, and the stainless steel pipes and the stop valve body 1 are connected by flame path furnace welding. The end of the cut-off valve body 1 far away from the second pipeline 31 is provided with a valve core 6 and a valve rod 5, and the end of the cut-off valve body 1 far away from the first pipeline 21 is provided with a cut-off valve cap 4. The valve rod 5 drives the valve core 6 to move, so that the first valve body connector 11 and the second valve body connector 12 are connected or disconnected.
According to another aspect embodiment of the present invention, an air conditioner includes the stop valve assembly of the above embodiment. The first connecting sleeve 22 and the second connecting sleeve 32 mainly adopt second metal, the first pipeline 21 and the second pipeline 31 mainly adopt first metal, and when the cost of the first metal is lower than that of the second metal, the cost of the stop valve assembly can be reduced, so that the cost of the air conditioner is reduced, and when the welding temperature of the second metal is low, the welding difficulty of the stop valve assembly and other pipelines can be reduced.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A shutoff valve assembly, comprising:
the stop valve body is provided with a first valve body interface and a second valve body interface;
the first pipeline assembly comprises a first pipeline and a first connecting sleeve, the first pipeline is fixed with the first connector of the valve body, and the first connecting sleeve is fixed with the first pipeline;
the second pipeline assembly comprises a second pipeline and a second connecting sleeve, the second pipeline is fixed with the second connector of the valve body, and the second connecting sleeve is fixed with the second pipeline;
the first pipeline and the second pipeline are made of first metal, and the first connecting sleeve and the second connecting sleeve are made of second metal.
2. The shutoff valve assembly of claim 1, wherein said first conduit includes: the first pipeline body and the first pipe diameter change portion of the one end of the first interface of the valve body are arranged to be kept away from by the first pipeline body, the pipe diameter of the first pipe diameter change portion is smaller than that of the first pipeline body, and the first connecting sleeve is fixedly sleeved outside the first pipe diameter change portion and is fixedly welded.
3. The shut-off valve assembly of claim 2, wherein the first pipe body and the first pipe diameter changing portion are connected by a first transition section, and an end of the first connecting sleeve abuts against the first transition section.
4. The shut-off valve assembly of claim 3, wherein the axial overlap length of said first coupling sleeve with said first pipe diameter variation is no less than 3mm.
5. The shut-off valve assembly of claim 1, wherein the first coupling sleeve is further provided with a positioning projection on an inner wall surface or an outer wall surface.
6. The shut-off valve assembly of claim 5, wherein the positioning projection is configured as a plurality of positioning projections arranged at intervals in a circumferential direction of the first coupling sleeve; or the positioning projection is configured as an annular projection that is continuous in the circumferential direction of the first coupling sleeve.
7. The shutoff valve assembly of any of claims 1-6, wherein the second connecting sleeve includes a second connecting sleeve body and a second pipe diameter changing portion, the pipe diameter of the second pipe diameter changing portion is smaller than the pipe diameter of the second connecting sleeve body, the second pipe is fixedly sleeved inside the second pipe diameter changing portion and is welded and fixed, the second pipe partially extends into the second connecting sleeve body, and the outer wall surface of the second pipe is separated from the inner wall surface of the second connecting sleeve body.
8. The shut-off valve assembly as recited in claim 7, wherein the second connecting sleeve body and the second pipe diameter changing portion are connected by a second transition section, and an outer wall surface of the second pipeline is separated from an inner wall surface of the second transition section.
9. The shutoff valve assembly of claim 1, wherein said first metal is iron and said second metal is copper.
10. An air conditioner comprising a shut-off valve assembly as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222314718.0U CN218096706U (en) | 2022-08-31 | 2022-08-31 | Stop valve assembly and air conditioner with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222314718.0U CN218096706U (en) | 2022-08-31 | 2022-08-31 | Stop valve assembly and air conditioner with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218096706U true CN218096706U (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222314718.0U Active CN218096706U (en) | 2022-08-31 | 2022-08-31 | Stop valve assembly and air conditioner with same |
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| Country | Link |
|---|---|
| CN (1) | CN218096706U (en) |
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2022
- 2022-08-31 CN CN202222314718.0U patent/CN218096706U/en active Active
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