CN212966497U - Protective cover and alarm - Google Patents
Protective cover and alarm Download PDFInfo
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- CN212966497U CN212966497U CN202021852254.3U CN202021852254U CN212966497U CN 212966497 U CN212966497 U CN 212966497U CN 202021852254 U CN202021852254 U CN 202021852254U CN 212966497 U CN212966497 U CN 212966497U
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Abstract
The utility model provides a pair of safety cover and alarm relates to alarm equipment technical field to optimize the structure of alarm safety cover to a certain extent, reduce the installation degree of difficulty of safety cover, avoid the problem of the reverse installation of safety cover. The utility model provides a protective cover, which comprises a bottom shell and an end cover; the bottom shell is provided with a first positioning column and a second positioning column which respectively extend along a first direction, and the first positioning column and the second positioning column are different in size; the end cover is provided with a first socket and a second socket, the first socket is matched with the first positioning column, the second socket is matched with the second positioning column, the first positioning column can be inserted into the first socket, and the second positioning column can be inserted into the second socket, so that the end cover is connected with the bottom shell.
Description
Technical Field
The utility model belongs to the technical field of the alarm device technique and specifically relates to a safety cover and alarm are related to.
Background
With the progress of safety consciousness of people and the perfection of related laws and regulations, gas detection and monitoring technology has been widely applied in the fields of industrial production, medical diagnosis, environmental monitoring, national defense and the like, and attention is paid to the maintenance and overhaul of alarms.
The alarm maintenance is mostly the maintenance to the alarm probe, because the alarm is installed mostly in the difficult position that touches of daily, and need pull down the safety cover in the maintenance process, and current safety cover when installing after the maintenance is accomplished, the problem that operating personnel installed the upper end cover in the reverse direction often can appear, has not only increased operating personnel's the operation degree of difficulty, has reduced the operating efficiency moreover.
Therefore, it is desirable to provide a protective cover and an alarm to solve the problems in the prior art to some extent.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a safety cover and alarm to optimize the structure of alarm safety cover to a certain extent, reduce the installation degree of difficulty of safety cover, avoid the reverse problem of installing of safety cover.
The utility model provides a protective cover, which comprises a bottom shell and an end cover; the bottom shell is provided with a first positioning column and a second positioning column which respectively extend along a first direction, and the first positioning column and the second positioning column are different in size; the end cover is provided with a first socket and a second socket, the first socket is matched with the first positioning column, the second socket is matched with the second positioning column, the first positioning column can be inserted into the first socket, and the second positioning column can be inserted into the second socket, so that the end cover is connected with the bottom shell.
The end cover comprises an end cover body, a first arc part, a second arc part, a first connecting part and a second connecting part; the first arc part and the second arc part are arranged on one side, facing the bottom shell, of the end cover body at intervals along the circumferential direction of the end cover body; the first connecting part and the second connecting part are positioned between the first arc part and the second arc part; the first socket by first connecting portion, the one end of first arc portion, the one end of second arc portion and the edge of end cover body encloses and establishes the formation, the second socket by second connecting portion the other end of first arc portion the other end of second arc portion and the edge of end cover body encloses and establishes the formation.
Specifically, the first arc part and the second arc part protrude out of the edge of the end cover body, so that the first arc part and the second arc part are arranged in a stepped manner with the end cover body.
The first positioning column and the second positioning column are arranged on the bottom shell, and the first connecting part and the second connecting part are respectively provided with a first positioning hole and a second positioning hole; the first positioning column and the second positioning column are provided with clamping holes corresponding to the positions of the buckles respectively, and the buckles can be clamped into the corresponding clamping holes so that the end cover is connected with the bottom shell.
Specifically, the first connecting portion and the second connecting portion extend along the first direction, and a holding portion extending along the second direction is formed at one end of each of the first connecting portion and the second connecting portion, which is far away from the buckle; the buckle can be separated from the clamping hole by pressing the holding part, so that the end cover is separated from the bottom shell.
Further, the first direction and the second direction are perpendicular to each other, so that the holding portion is perpendicular to the first connecting portion and the second connecting portion.
Furthermore, a reinforcing part extending along the first direction is formed on one side of the first connecting part and the second connecting part, which is far away from the buckle.
A plurality of wiring grooves are formed in one side of the bottom shell facing the end cover; the plurality of wiring grooves extend along the second direction, and when the end cover is buckled with the bottom shell, a wiring space is formed between the wiring grooves and the end cover, so that cables can enter the end cover.
Specifically, the cabling channel comprises a first cabling channel and a second cabling channel; the first wiring groove and the second wiring groove are correspondingly arranged, and the axis of the first wiring groove is collinear with the axis of the second wiring groove.
Compared with the prior art, the utility model provides a safety cover has following advantage:
the utility model provides a protective cover, which comprises a bottom shell and an end cover; the bottom shell is provided with a first positioning column and a second positioning column which respectively extend along a first direction, and the first positioning column and the second positioning column are different in size; the end cover is provided with a first socket and a second socket, the first socket is matched with the first positioning column, the second socket is matched with the second positioning column, the first positioning column can be inserted into the first socket, and the second positioning column can be inserted into the second socket, so that the end cover is connected with the bottom shell.
Therefore, through the first positioning column and the second positioning column which are arranged on the bottom shell, the first positioning column and the second positioning column are different in size, the end cover is provided with the first socket matched with the first positioning column and the second socket matched with the second positioning column, and when the end cover is required to be connected with the bottom shell, the end cover can be directly installed and connected according to the corresponding sockets.
And because all the adaptations between first socket and second reference column and second socket and first reference column, consequently, have at least one reference column and can't insert in the socket to can make operating personnel carry out exact installation with the end cover fast, promote the operating efficiency.
Furthermore, the utility model also provides an alarm, including foretell safety cover.
Adopt the alarm of the safety cover that this application provided, when maintaining the alarm probe, can pull down the safety cover fast, after the maintenance is accomplished, because the size of first reference column and second reference column on the end cover is different, consequently, can make operating personnel align the socket that corresponds with the reference column fast to realized the quick installation of safety cover, and avoided the problem of reverse installation.
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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a protective cover according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first view angle of an end cap in a protective cover according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second view angle of an end cap in a protective cover according to an embodiment of the present invention;
fig. 4 is a schematic view of an overall structure of a bottom shell in a protective cover according to an embodiment of the present invention.
In the figure: 1-end cap; 101-an end cap body; 102-a first arc; 103-a second arc; 104-a first connection; 105-a second connection; 2-a bottom shell; 201-a first positioning column; 202-a second positioning column; 203-a first cabling channel; 204-a second cabling channel; 3-a first socket; 4-a second socket; 5-buckling; 6-clamping hole; 7-a grip portion; 8-a reinforcement;
s1 — first direction; s2-second direction.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.
For ease of description, spatial relationship terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.
Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.
The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
Fig. 1 is a schematic view of an overall structure of a protective cover according to an embodiment of the present invention.
As shown in fig. 1, the present invention provides a protective cover, which comprises a bottom shell 2 and an end cover 1; a first positioning column 201 and a second positioning column 202 which respectively extend along the first direction S1 are arranged on the bottom case 2, and the first positioning column 201 and the second positioning column 202 have different sizes; the end cover 1 is provided with a first inserting opening 3 and a second inserting opening 4, the first inserting opening 3 is matched with the first positioning column 201, the second inserting opening 4 is matched with the second positioning column 202, the first positioning column 201 can be inserted into the first inserting opening 3, and the second positioning column 202 can be inserted into the second inserting opening 4, so that the end cover 1 is connected with the bottom shell 2.
Compared with the prior art, the utility model provides a safety cover has following advantage:
the utility model provides a safety cover, through first reference column 201 and the second reference column 202 that sets up on drain pan 2, and make first reference column 201 different with second reference column 202's size, through set up on end cover 1 with the first socket 3 of first reference column 201 looks adaptation and with the second socket 4 of second reference column 202 looks adaptation, when needs are connected end cover 1 with drain pan 2, can directly carry out erection joint according to the socket that corresponds.
And because all do not adapt between first socket 3 and second reference column 202 and second socket 4 and first reference column 201, consequently, have at least that a reference column can't insert in the socket to can make operating personnel carry out exact installation with end cover 1 fast, promote the operating efficiency.
It should be added that, preferably, the first positioning column 201 and the second positioning column 202 in the present application are rectangular parallelepiped structures, and the size of the first positioning column 201 in the present application is smaller than that of the second positioning column 202, so that an operator can more clearly align the first socket 3 with the first positioning column 201 and the second socket 4 with the second positioning column 202 when installing.
However, the first positioning column 201 and the second positioning column 202 in the present application are not limited to the rectangular parallelepiped structure, and other alignment with the socket can be realized by using other cylindrical structures with different diameters, and the first positioning column 201 can be a rectangular parallelepiped structure, and the second positioning column 202 can be a cylindrical structure to realize different alignment.
Fig. 2 is a schematic structural diagram of a first view angle of the end cap 1 in the protection cover according to the embodiment of the present invention.
As shown in fig. 1 and fig. 2, the end cap 1 includes an end cap body 101, a first arc portion 102, a second arc portion 103, a first connecting portion 104, and a second connecting portion 105; the first arc part 102 and the second arc part 103 are arranged on one side of the end cover body 101 facing the bottom shell 2 at intervals along the circumferential direction of the end cover body 101; the first connecting part 104 and the second connecting part 105 are positioned between the first arc part 102 and the second arc part 103; the first insertion opening 3 is formed by the first connecting portion 104, one end of the first arc portion 102, one end of the second arc portion 103 and the edge of the end cover body 101, and the second insertion opening 4 is formed by the second connecting portion 105, the other end of the first arc portion 102, the other end of the second arc portion 103 and the edge of the end cover body 101.
The first arc part 102 and the second arc part 103 which are arranged along the circumferential direction of the end cover body 101 at intervals can improve the accommodating space of the end cover 1 to a certain extent, the first connecting part 104 and the second connecting part 105 are arranged between the first arc part 102 and the second arc part 103, and the first inserting opening 3 and the second inserting opening 4 can be formed by surrounding the edge of the end cover body 101, so that the first positioning column 201 and the second positioning column 202 can be connected in an aligning mode.
It should be added here that, since the size of the first positioning column 201 in the present application is smaller than that of the second positioning column 202, the size of the corresponding first connecting portion 104 is smaller than that of the second connecting portion 105, so that the size of the first inserting opening 3 can be matched with that of the first positioning column 201, and the size of the second inserting opening 4 can be matched with that of the second positioning column 202.
Specifically, as shown in fig. 1 and fig. 2, the first arc portion 102 and the second arc portion 103 both protrude from the edge of the end cover body 101, so that the first arc portion 102 and the second arc portion 103 are arranged in a stepped manner with the end cover body 101.
Through the edge with first arc 102 and second arc 103 protrusion in end cover body 101 in this application to be the stairstepping setting with end cover body 101, can avoid first reference column 201 and second reference column 202 to insert the problem that the structure and the wiring of protection produced the influence in the end cover body 101 to a certain extent in the process of first socket 3 and second socket 4.
It should be added here that, in the present application, the end cover body 101, the first arc portion 102, the second arc portion 103, the first connecting portion 104, and the second connecting portion 105 are all integrally formed, so as to improve the strength and the service life of the overall structure to a certain extent.
Fig. 3 is a schematic structural diagram of a second view angle of the end cap 1 in the protection cover according to the embodiment of the present invention.
As shown in fig. 1 to 3, the first connecting portion 104 and the second connecting portion 105 are respectively formed with a buckle 5 at an end close to the bottom case 2, and the buckle 5 is located at a side of the first connecting portion 104 and the second connecting portion 105 facing the first positioning column 201 and the second positioning column 202; the first positioning column 201 and the second positioning column 202 have been seted up respectively in the position that corresponds buckle 5 and have been blocked hole 6, and buckle 5 can block in the corresponding card hole 6 to make end cover 1 be connected with drain pan 2.
Through the buckle 5 that forms on first connecting portion 104 and the second connecting portion 105 and the card hole 6 that corresponds formation on first reference column 201 and the second reference column 202, insert first socket 3 when first reference column 201, when second reference column 202 inserts second socket 4, buckle 5 on first connecting portion 104 can block into the card hole 6 on first reference column 201, buckle 5 on the second connecting portion 105 can block into in the card hole 6 on the second reference column 202, thereby make the connection of end cover 1 and drain pan 2 more stable.
Moreover, since the first connecting portion 104 and the second connecting portion 105 are spaced from the edge of the end cap body 101 by a certain distance, when the ends of the first connecting portion 104 and the second connecting portion 105 away from the buckle 5 are pressed in the direction close to the end cap body 101, the ends of the first connecting portion 104 and the second connecting portion 105 provided with the buckle 5 can move in the direction away from the end cap body 101, so that the buckle 5 is separated from the buckle hole 6, and the end cap 1 can be separated from the housing.
It should be added that, in the present application, the buckle 5 protrudes out of the plane where the first connecting portion 104 and the second connecting portion 105 are located along the second direction S2, and preferably, a through hole is opened along the axis of the first positioning column 201 and the second positioning column 202 in the present application, the clamping hole 6 penetrates through the side walls of the first positioning column 201 and the second positioning column 202 along the second direction S2 and is communicated with the through hole, so that the buckle 5 can be clamped into the clamping hole 6, and part of the buckle 5 is located in the through hole, thereby improving the connection strength between the end cover 1 and the bottom case 2 to a certain extent.
Specifically, as shown in fig. 1 to 3, the first connecting portion 104 and the second connecting portion 105 are extended along the first direction S1, and one ends of the first connecting portion 104 and the second connecting portion 105 away from the buckle 5 are respectively formed with a holding portion 7 extended along the second direction S2; pressing the grip 7 can disengage the catch 5 from the catch hole 6 to separate the cap 1 from the base case 2.
Through set up the portion 7 of gripping in the one end of keeping away from buckle 5 at first connecting portion 104 and second connecting portion 105, can make things convenient for the operating personnel to press first connecting portion 104 and second connecting portion 105 on the one hand, on the other hand, also can make things convenient for the operating personnel to snatch end cover 1 and carry out dismouting operation.
The first direction S1 is the moving direction of the end cap 1, the holding portion 7 is disposed along the second direction S2, and the first direction S1 is perpendicular to the second direction S2, so that the holding portion 7 is perpendicular to the first connecting portion 104 and the second connecting portion 105.
It should be added here that the grip portion 7, the first connecting portion 104 and the second connecting portion 105 are integrally formed in the present application.
Further, as shown in fig. 1 to 3, the sides of the first connecting portion 104 and the second connecting portion 105 facing away from the buckle 5 are formed with a reinforcing portion 8 extending in the first direction S1.
Because the end cover 1 that this application provided all needs to be through pressing the portion 7 of gripping when the dismouting, makes the one end that is equipped with buckle 5 remove to the direction of keeping away from end cover body 101, consequently, set up reinforcing part 8 along first direction S1 on first connecting portion 104 and second connecting portion 105 to can increase the thickness of first connecting portion 104 and second connecting portion 105 to a certain extent, and then can promote the intensity and the life of first connecting portion 104 and second connecting portion 105.
Fig. 4 is a schematic view of the overall structure of the bottom case 2 in the protection cover according to the embodiment of the present invention.
As shown in fig. 1 to 4, a plurality of wiring grooves are formed on one side of the bottom case 2 facing the end cover 1; the plurality of wiring grooves all extend along the second direction S2, and when the end cover 1 is fastened to the bottom case 2, a wiring space is formed between the wiring grooves and the end cover 1, so that cables can enter the end cover 1.
This application is through setting up a plurality of trough along second direction S2 on drain pan 2, and when end cover 1 and drain pan 2 buckled mutually, outside partial cable can get into in the accommodation space of end cover 1 through the trough. And, set up the trough and also can make the cable arrange according to the demand to can optimize the wiring position of whole device to a certain extent, make the arrangement of circuit more reasonable pleasing to the eye.
Specifically, as shown in fig. 1-4, the cabling channels include a first cabling channel 203 and a second cabling channel 204; the first wiring groove 203 and the second wiring groove 204 are correspondingly arranged, and the axis of the first wiring groove 203 is collinear with the axis of the second wiring groove 204.
Preferably, the cabling channel in this application includes first cabling channel 203 and second cabling channel 204, and first cabling channel 203 sets up along the axis of drain pan 2 with second cabling channel 204 relatively, and link up in the edge of drain pan 2, and when end cover 1 buckled with drain pan 2 mutually, the cable can stretch into first cabling channel 203 and/or second cabling channel 204 by the edge of drain pan 2 according to the wiring demand to get into the accommodation space of end cover 1, be connected with electronic component.
Because the axes of the first wiring groove 203 and the second wiring groove 204 are collinear, the axes of cables entering the first wiring groove 203 and the second wiring groove 204 can be collinear to a certain extent, and therefore wiring is more reasonable and attractive.
Furthermore, the utility model also provides an alarm, including foretell safety cover.
Adopt the alarm of the safety cover that this application provided, when maintaining the alarm probe, can pull down the safety cover fast, after the maintenance is accomplished, because the size of first reference column 201 and second reference column 202 on the end cover 1 is different, consequently, can make operating personnel align socket and the reference column that corresponds fast to realized the quick installation of safety cover, and avoided the problem of reverse installation.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A protective cover is characterized by comprising a bottom shell and an end cover;
the bottom shell is provided with a first positioning column and a second positioning column which respectively extend along a first direction, and the first positioning column and the second positioning column are different in size;
the end cover is provided with a first socket and a second socket, the first socket is matched with the first positioning column, the second socket is matched with the second positioning column, the first positioning column can be inserted into the first socket, and the second positioning column can be inserted into the second socket, so that the end cover is connected with the bottom shell.
2. The protective cover of claim 1, wherein the end cap comprises an end cap body, a first arc, a second arc, a first connection, and a second connection;
the first arc part and the second arc part are arranged on one side, facing the bottom shell, of the end cover body at intervals along the circumferential direction of the end cover body;
the first connecting part and the second connecting part are positioned between the first arc part and the second arc part;
the first socket by first connecting portion, the one end of first arc portion, the one end of second arc portion and the edge of end cover body encloses and establishes the formation, the second socket by second connecting portion the other end of first arc portion the other end of second arc portion and the edge of end cover body encloses and establishes the formation.
3. The protective cover of claim 2, wherein the first and second arcs each protrude from an edge of the end cap body such that the first and second arcs are stepped with the end cap body.
4. The protective cover according to claim 2, wherein a buckle is formed at one end of each of the first connecting part and the second connecting part close to the bottom shell, and the buckle is positioned at one side of the first connecting part and the second connecting part facing the first positioning column and the second positioning column;
the first positioning column and the second positioning column are provided with clamping holes corresponding to the positions of the buckles respectively, and the buckles can be clamped into the corresponding clamping holes so that the end cover is connected with the bottom shell.
5. The protective cover according to claim 4, wherein the first connecting portion and the second connecting portion extend along the first direction, and a holding portion extending along the second direction is formed at one end of each of the first connecting portion and the second connecting portion away from the buckle;
the buckle can be separated from the clamping hole by pressing the holding part, so that the end cover is separated from the bottom shell.
6. The protective cover of claim 5, wherein the first direction and the second direction are perpendicular to each other such that the grip portion is perpendicular to the first connection portion and the second connection portion.
7. The protective cover according to claim 5, characterized in that the sides of the first and second connecting portions facing away from the catch are formed with a reinforcement extending in the first direction.
8. The protective cover according to any one of claims 5 to 7, wherein a side of the bottom case facing the end cap is formed with a plurality of routing grooves;
the plurality of wiring grooves extend along the second direction, and when the end cover is buckled with the bottom shell, a wiring space is formed between the wiring grooves and the end cover, so that cables can enter the end cover.
9. The protective cover of claim 8, wherein the cabling channel comprises a first cabling channel and a second cabling channel;
the first wiring groove and the second wiring groove are correspondingly arranged, and the axis of the first wiring groove is collinear with the axis of the second wiring groove.
10. An alarm unit comprising a protective cover as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852254.3U CN212966497U (en) | 2020-08-28 | 2020-08-28 | Protective cover and alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852254.3U CN212966497U (en) | 2020-08-28 | 2020-08-28 | Protective cover and alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212966497U true CN212966497U (en) | 2021-04-13 |
Family
ID=75362275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021852254.3U Active CN212966497U (en) | 2020-08-28 | 2020-08-28 | Protective cover and alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212966497U (en) |
-
2020
- 2020-08-28 CN CN202021852254.3U patent/CN212966497U/en active Active
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