CN216298328U - Welding protection tool - Google Patents
Welding protection tool Download PDFInfo
- Publication number
- CN216298328U CN216298328U CN202122705871.1U CN202122705871U CN216298328U CN 216298328 U CN216298328 U CN 216298328U CN 202122705871 U CN202122705871 U CN 202122705871U CN 216298328 U CN216298328 U CN 216298328U
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- mounting hole
- lithium battery
- cover plate
- battery module
- explosion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a welding protection tool and relates to the technical field of welding devices. The welding protection tool comprises a protection cover plate tool, a positioning pin and a shielding piece, wherein the protection cover plate tool comprises a first mounting hole and a second mounting hole. The locating pin is connected with the protection cover plate frock through first mounting hole, and the locating pin is used for with treating welded lithium battery module and be connected, and wherein, lithium battery module includes explosion-proof valve. The shielding piece is connected with the protecting cover plate tool through the second mounting hole, the positioning pin and the shielding piece are located on the same side of the protecting cover plate tool, and the shielding piece faces the explosion-proof valve under the condition that the positioning pin is connected with the lithium battery module and is used for shielding the explosion-proof valve. Based on above-mentioned structure, high temperature welding slag splashes to the explosion-proof valve when can avoiding welding, and then ensures lithium cell module's security.
Description
Technical Field
The utility model relates to the technical field of welding devices, in particular to a welding protection tool.
Background
At present, in the new energy electric automobile industry, because the lithium battery has the advantages of little environmental pollution, no noise, high energy and the like, the lithium battery is used as a power source of new energy automobiles. Usually, a plurality of lithium batteries are connected in series and parallel in a laser welding manner to form a lithium battery module to provide electric energy.
In the practical application in-process, because the lithium cell can produce high temperature welding slag at the laser welding in-process, high temperature welding slag splashes the explosion-proof valve of lithium cell, scalds the explosion-proof valve tectorial membrane easily or gets into in the explosion-proof valve, influences the security of lithium cell module.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a welding protection tool which can shield an explosion-proof valve of a lithium battery so as to prevent high-temperature welding slag generated during laser welding from splashing to the position of the explosion-proof valve, thereby influencing the safety of a lithium battery module.
The utility model provides a technical scheme that:
a welding protection tool comprises a protection cover plate tool, a positioning pin and a shielding piece;
the protective cover plate tool comprises a first mounting hole and a second mounting hole;
the positioning pin is connected with the protective cover plate tool through the first mounting hole and is used for being connected with a lithium battery module to be welded, wherein the lithium battery module comprises an explosion-proof valve;
the shielding piece passes through the second mounting hole with the protection cover plate frock is connected, the locating pin with the shielding piece is located same one side of protection cover plate frock the locating pin with under the condition that lithium battery module is connected, the shielding piece orientation explosion-proof valve is used for sheltering from explosion-proof valve.
Further, the shielding piece comprises a mounting part and a first handheld part, and the mounting part is connected with the first handheld part;
the assembling portion passes through the second mounting hole with the protection cover plate frock is connected, the locating pin with first handheld portion is located same one side of protection cover plate frock the locating pin with under the condition that lithium battery module is connected, the assembling portion orientation explosion-proof valve is used for sheltering from explosion-proof valve.
Further, the assembly portion is the round platform that has the mounting groove, first handheld portion is the cylinder, the one end joint of first handheld portion in the assembly portion.
Further, the mounting groove is located the middle part of round platform, the diameter of mounting groove with the diameter adaptation of second mounting hole, the mounting groove passes through the second mounting hole joint in protection cover plate frock.
Further, the positioning pin comprises a fixing part and a second holding part, and the fixing part is connected with the second holding part;
the fixing part is connected with the protective cover plate tool through the first mounting hole;
the lithium battery module comprises a third mounting hole, and the fixing part is connected with the lithium battery module through the third mounting hole.
Further, the fixed part and the second handheld part are cylinders with different diameters, the diameter of the fixed part is smaller than that of the second handheld part, and one end of the fixed part is connected with one end of the second handheld part.
Further, the diameter of fixed part with the diameter looks adaptation of first mounting hole, the fixed part joint in first mounting hole, thereby with the guard plate frock is connected.
Further, the diameter of fixed part with the diameter looks adaptation of third mounting hole, the fixed part joint in first mounting hole, thereby with the lithium cell module is connected.
Further, the second handheld part and the shielding piece are arranged on the same side of the protective cover plate tool, and under the condition that the positioning pin is connected with the lithium battery module, the side is far away from the lithium battery module.
Furthermore, the protective cover plate tool is provided with a plurality of second mounting holes, the number of the shielding pieces is multiple, and the second mounting holes are matched with the number of the shielding pieces, so that each shielding piece is connected with the protective cover plate tool through one second mounting hole.
The lithium battery module is provided with a plurality of explosion-proof valves, and the number of the shielding pieces is larger than or equal to that of the explosion-proof valves so as to shield all the explosion-proof valves on the lithium battery module.
The welding protection tool provided by the utility model has the beneficial effects that: based on the ingenious design to welding protection frock, when using, only need utilize the locating pin to fix welding protection frock on lithium battery module, alright in order to make the shielding piece towards explosion-proof valve. Thereby when the welding, can shelter from the explosion-proof valve through shielding piece for the high temperature welding slag that produces can not splash the explosion-proof valve during the welding, and then ensures lithium battery module's security.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a welding protection tool provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a shield plate tool according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a lithium battery module according to an embodiment of the present invention;
FIG. 4 is a schematic view of a second mounting hole assembled with an explosion-proof valve according to an embodiment of the present invention;
FIG. 5 is a schematic view of a shield according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a positioning pin according to an embodiment of the present invention.
Icon: 10-welding a protection tool; 11-a shield plate tool; 12-a locating pin; 13-a shield;
111-a first mounting hole; 112-a second mounting hole;
20-a lithium battery module; 21-an explosion-proof valve; 22-a third mounting hole;
131-an assembly part; 132-a first handle; 131-a-an installation groove; 131-b-an upper circular truncated cone of the assembly part; 131-c-the lower circular truncated cone of the assembly part;
121-a fixed part; 122-second hand-held portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", 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, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of description and simplification of description, but do not indicate or imply that the equipment or elements that are referred to 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.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In view of the fact that a plurality of lithium batteries need to be welded to form a lithium battery module, high-temperature welding slag generated in welding possibly splashes to an explosion-proof valve of the lithium battery, so that leakage of the lithium battery is caused, and safety of the lithium battery module is affected. Therefore, the utility model designs a set of welding protection tool to shield the explosion-proof valve, as shown in figure 1. Fig. 1 is a schematic structural diagram of a welding protection tool 10 according to an embodiment of the present invention.
For convenience of understanding, please refer to fig. 2 and fig. 3 together, in which fig. 2 is a schematic structural diagram of a protective cover plate tool 11 according to an embodiment of the present invention, and fig. 3 is a schematic structural diagram of a lithium battery module 20 according to an embodiment of the present invention.
The welding protection tool 10 comprises a protection cover plate tool 11, a positioning pin 12 and a shielding piece 13.
The shield plate tooling 11 includes a first mounting hole 111 and a second mounting hole 112.
The locating pin 12 is connected with guard shield plate frock 11 through first mounting hole 111, and the locating pin 12 is used for with treating welded lithium battery module 20 and be connected, and wherein, lithium battery module 20 includes explosion-proof valve 21.
The shielding piece 13 is connected with the protecting cover plate tool 11 through the second mounting hole 112, the positioning pin 12 and the shielding piece 13 are located on the same side of the protecting cover plate tool 11, and under the condition that the positioning pin 12 is connected with the lithium battery module 20, the shielding piece 13 faces the explosion-proof valve 21 and is used for shielding the explosion-proof valve 21.
As can be seen from the above, the positioning pin 12 is connected to the shield plate tool 11 through the first mounting hole 111, and the shielding member 13 is connected to the shield plate tool 11 through the second mounting hole 112. When in use, the welding protection tool 10 is fixed on the lithium battery module 20 through the positioning pin 12. During the welding, the shielding piece 13 of connecting on the welding protection frock 10 is towards explosion-proof valve 21 to shelter from explosion-proof valve 21, the high temperature welding slag of the production when avoiding appearing the welding splashes on explosion-proof valve 21, the condition of the lithium cell weeping that leads to, thereby the condition of the security of influence lithium cell module 20.
In this embodiment, the drawings are only examples, and the implementation structure of the welding protection tool 10 may be other. For example, in fig. 1, there are a plurality of positioning pins 12 and a plurality of shielding members 13, and only one of the positioning pins 12 and the shielding member 13 is shown in fig. 1 for illustration. Similarly to fig. 1, the number of the first mounting holes 111 and the second mounting holes 112 in fig. 2 may be multiple, and fig. 2 only shows one of the first mounting holes 111 and the second mounting holes 112. The number of the third mounting holes 22 and the explosion-proof valve 21 in fig. 3 may be plural, and fig. 3 only shows one of the third mounting holes 22 and the explosion-proof valve 21.
The shapes of the first mounting hole 111 and the second mounting hole 112 are not limited, and may be circular holes or square holes, and may be set according to the convenience degree of use in the actual application process.
In an implementation mode, during welding, welding protection frock 10 passes through locating pin 12 to be fixed on lithium battery module 20, can prevent that welding protection frock 10 and lithium battery module 20 from producing relative slip, influence the relative position between the explosion-proof valve 21 on shielding piece 13 and the lithium battery module 20, lead to shielding piece 13 can not shelter from explosion-proof valve 21 completely, thereby make the high temperature welding slag splash to the position that explosion-proof valve 21 is not sheltered from, lead to the lithium cell weeping at explosion-proof valve 21 place, influence the security of lithium battery module.
Since the lithium battery module 20 has the plurality of explosion-proof valves 21 and the shielding member 13 is shielded by the second mounting hole 112, the welding protection tool 10 also includes the plurality of second mounting holes 112 and the shielding member 13.
In one implementation, the number of the second mounting holes 112 and the number of the shielding members 13 of the welding protection tool 10 may be determined according to the number of the explosion-proof valves 21 of the lithium battery module 20, as long as the number of the second mounting holes 112 and the number of the shielding members 13 are greater than or equal to the number of the explosion-proof valves 21 on the lithium battery module 20, so as to ensure that all the explosion-proof valves 21 can be covered without the unblocked explosion-proof valves 21.
The number of the second mounting holes 112 is matched with the number of the shielding pieces 13, so that the shielding pieces 13 are ensured to have positions connected with the shield plate tool 11, and the shielding effect is exerted.
It should be explained that there are various types of lithium battery modules, the lithium battery module 20 provided in fig. 3 is an optional one, and the welding protection tool 10 determines the positions and the number of connections of the positioning pins 12 and the shielding members 13 on the protection cover plate tool 11 according to the lithium battery modules to be connected. Therefore, fig. 1 and 2 are provided for convenience of explanation, but do not represent the type of the welding protection tool 10 or the shield plate tool 11.
In one implementation, the positioning pin 12 and the shielding piece 13 are on the same side of the shield plate tooling 11, which is the side away from the lithium battery module 20 during welding.
To clearly illustrate the relative positions of the shielding member 13, the second mounting hole 112 and the explosion-proof valve 21 when the protection tool 10 is connected to the lithium battery module 20, fig. 4 is an assembly schematic diagram of the second mounting hole 112 and the explosion-proof valve 21 according to an embodiment of the present invention. It should be noted that, when the protection tool 10 is connected to the lithium battery module 20, there are a plurality of similar sets of the second mounting hole 112, the shielding member 13 and the explosion-proof valve 21, and fig. 4 is a simplified schematic diagram of any one of them.
As shown in fig. 4, the centers of the explosion-proof valve 21 and the second mounting hole 112 are located on the same straight line so that the shutter 13 connected to the second mounting hole 112 can shutter the complete explosion-proof valve 21. The diameter of the second mounting hole 112 and the diameter of the explosion-proof valve 21 are not limited at all, and may be greater than or equal to or less than, as long as the shielding member 13 can completely shield the explosion-proof valve 21. Fig. 4 is a simplified diagram for convenience of illustration, and does not represent a scene in practical application.
In one implementation, the diameter of the second mounting hole 112 may be slightly larger than the diameter of the explosion-proof valve 21 to facilitate observation of whether the shutter 13 completely covers the explosion-proof valve 21.
Since the function of the welding protection tool 10 provided by the present invention is mainly embodied in the shielding, how the shielding function of the shielding piece 13 is realized needs to be described in detail. Fig. 5 is a schematic structural view of the shielding member 13 according to the embodiment of the present invention, and as shown in fig. 5, the shielding member 13 includes a mounting portion 131 and a first holding portion 132, and the mounting portion 131 is connected to the first holding portion 132.
The assembling portion 131 is connected with the shield plate tooling 11 through the second mounting hole 112, the positioning pin 12 and the first handheld portion 132 are located on the same side of the shield plate tooling 11, and under the condition that the positioning pin 12 is connected with the lithium battery module 20, the assembling portion 131 faces the explosion-proof valve 21 and is used for shielding the explosion-proof valve 21.
The assembling portion 131 is a circular truncated cone having an installation groove 131-a, the first holding portion 132 is a cylinder, and one end of the first holding portion 132 is clamped in the installation groove of the assembling portion 131.
The mounting groove 131-a is located in the middle of the circular truncated cone, the diameter of the mounting groove 131-a is matched with that of the second mounting hole 112, and the mounting groove 131-a is connected to the protective cover plate tool in a clamping mode through the second mounting hole 112.
In one implementation, the assembling portion 131 and the first holding portion 132 may be made of a material that is resistant to high temperature, so as to prevent the high temperature welding slag from being penetrated. For example, the material may be rubber, or other materials such as silicone rubber.
In one implementation, the assembling portion 131 is a circular table having a mounting groove 131-a, and the first holding portion 132 is a cylinder, and a section of the cylinder is clamped in the mounting groove of the assembling portion 131. The clamping manner may be that one end of the cylinder is adhered to the upper bottom surface of the upper circular truncated cone 131-b, or that one end of the cylinder extends into the assembling portion 131 for connection.
In one implementation, the installation groove 131-a is located in the middle of the assembly portion 131, the diameter of the installation groove 131-a is adapted to the diameter of the second installation hole 112, and the length of the installation groove 131-a may be longer than or equal to the thickness of the shield plate tool 11, where the specific difference may be set according to the actual application scenario, so that the assembly portion may be plugged into the second installation hole.
The diameter of the lower bottom surface of the upper circular truncated cone 131-b and the diameter of the upper bottom surface of the lower circular truncated cone 131-c may be slightly larger than the diameter of the second mounting hole 112, so as to ensure that the assembly portion 131 is clamped in the second mounting hole and cannot fall out of the second mounting hole 112.
In one implementation, the diameter of the lower bottom surface of the lower circular truncated cone 131-c may be slightly larger than the diameter of the explosion-proof valve 21, or may be the same, so that the explosion-proof valve 21 can be completely shielded, and the purpose of effectively shielding high-temperature welding slag is achieved.
Fig. 6 is a schematic structural diagram of the positioning pin 12 according to the embodiment of the present invention, as shown in fig. 6, the positioning pin 12 includes a fixing portion 121 and a second holding portion 122, and the fixing portion 121 is connected to the second holding portion 122;
the fixing portion 121 is connected to the shield plate tool 11 through the first mounting hole 111.
The lithium battery module 20 includes a third mounting hole 22, and the fixing part 121 is connected to the lithium battery module 20 through the third mounting hole 22.
The fixing portion 121 and the second holding portion 122 may be cylinders having different diameters, the diameter of the fixing portion 121 is smaller than that of the second holding portion 122, and one end of the fixing portion 121 is connected to one end of the second holding portion 122.
The diameter of the fixing portion 121 is matched with the diameter of the first mounting hole 111, and the fixing portion 121 is clamped in the first mounting hole 111 and is connected with the shield plate tool 11.
The diameter of the fixing portion 121 is matched with the diameter of the third mounting hole 22, and the fixing portion 121 is clamped in the first mounting hole 111 so as to be connected with the lithium battery module 20.
The second hand-held portion 122 and the shielding member 13 are located on the same side of the cover plate fixture, and when the fixing portion 121 is connected to the lithium battery module 20, the side is a side away from the lithium battery module.
In one implementation, the fixing portion 121 and the second holding portion 122 are cylinders, and the shape of the bottom surface of the fixing portion 121 is not limited to be the same as the shape of the aperture of the first mounting hole 111. For example, it may be cylindrical to fit most parts on the market.
In one implementation, the fixing portion 121 and the second holding portion 122 may be cylinders with different diameters, and the bottom diameter of the fixing portion 121 is smaller than that of the second holding portion 122, so as to facilitate connection and detachment between the welding protection tool 10 and the lithium battery module 20. Wherein, the difference of diameter does not make the requirement, can adopt the fixed part that has on the market, only need guarantee the diameter of fixed part 121 and the diameter looks adaptation of first mounting hole 111 can to the joint in the first mounting hole 111 of shield plate frock 11.
In one implementation, the third mounting hole 22 is matched with the diameter of the fixing portion 121, so that the fixing portion 121 can be clamped in the third mounting hole 22, and the protection tool 10 is fixed on the lithium battery module 20 during welding, so as to prevent the welding protection tool 10 from sliding relative to the connected lithium battery module 20, and avoid the relative position misalignment between the explosion-proof valve 21 and the shielding member 13 connected to the second mounting hole 112.
In one implementation, the first hand-held portion 132 and the second hand-held portion 122 are on the same side of the shield plate tooling 11, which is the side away from the lithium battery module 20 during welding.
In summary, the welding protection tool 10 provided in the embodiment of the present invention can be fixed on the lithium battery module 20 by the positioning pin 12 when in use. Therefore, the shielding piece 13 can shield the explosion-proof valve 21 during welding, so that high-temperature welding slag generated during welding cannot splash to the explosion-proof valve 21, and the safety of the lithium battery module 20 is affected.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement 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 welding protection tool is characterized by comprising a protection cover plate tool, a positioning pin and a shielding piece;
the protective cover plate tool comprises a first mounting hole and a second mounting hole;
the positioning pin is connected with the protective cover plate tool through the first mounting hole and is used for being connected with a lithium battery module to be welded, wherein the lithium battery module comprises an explosion-proof valve;
the shielding piece passes through the second mounting hole with the protection cover plate frock is connected, the locating pin with the shielding piece is located same one side of protection cover plate frock the locating pin with under the condition that lithium battery module is connected, the shielding piece orientation explosion-proof valve is used for sheltering from explosion-proof valve.
2. The welding protection tool according to claim 1, wherein the shielding piece comprises an assembling portion and a first handheld portion, and the assembling portion is connected with the first handheld portion;
the assembling portion passes through the second mounting hole with the protection cover plate frock is connected, the locating pin with first handheld portion is located same one side of protection cover plate frock the locating pin with under the condition that lithium battery module is connected, the assembling portion orientation explosion-proof valve is used for sheltering from explosion-proof valve.
3. The welding protection tool according to claim 2, wherein the assembling portion is a circular truncated cone with an installation groove, the first handheld portion is a cylinder, and one end of the first handheld portion is clamped in the assembling portion.
4. The welding protection tool of claim 3, wherein the mounting groove is located in the middle of the circular truncated cone, the diameter of the mounting groove is matched with that of the second mounting hole, and the mounting groove is clamped to the protection cover plate tool through the second mounting hole.
5. The welding protection tool of claim 1, wherein the positioning pin comprises a fixing portion and a second holding portion, and the fixing portion is connected with the second holding portion;
the fixing part is connected with the protective cover plate tool through the first mounting hole;
the lithium battery module comprises a third mounting hole, and the fixing part is connected with the lithium battery module through the third mounting hole.
6. The welding protection tool of claim 5, wherein the fixing portion and the second holding portion are cylinders with different diameters, the diameter of the fixing portion is smaller than that of the second holding portion, and one end of the fixing portion is connected with one end of the second holding portion.
7. The welding protection tool of claim 6, wherein the diameter of the fixing portion is matched with that of the first mounting hole, and the fixing portion is clamped in the first mounting hole and connected with the protection cover plate tool.
8. The welding protection tool of claim 6, wherein the diameter of the fixing portion is matched with that of the third mounting hole, and the fixing portion is clamped in the first mounting hole and connected with the lithium battery module.
9. The welding protection tool of claim 5, wherein the second hand-held portion and the shielding member are located on the same side of the protection cover plate tool, and the side is a side far away from the lithium battery module when the fixing portion is connected with the lithium battery module.
10. The welding protection tool according to claim 1, wherein a plurality of second mounting holes are formed in the protection cover plate tool, the number of the shielding pieces is multiple, and the second mounting holes are matched with the number of the shielding pieces, so that each shielding piece is connected with the protection cover plate tool through one second mounting hole;
the lithium battery module is provided with a plurality of explosion-proof valves, and the number of the shielding pieces is larger than or equal to that of the explosion-proof valves so as to shield all the explosion-proof valves on the lithium battery module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122705871.1U CN216298328U (en) | 2021-11-05 | 2021-11-05 | Welding protection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122705871.1U CN216298328U (en) | 2021-11-05 | 2021-11-05 | Welding protection tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216298328U true CN216298328U (en) | 2022-04-15 |
Family
ID=81118004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122705871.1U Active CN216298328U (en) | 2021-11-05 | 2021-11-05 | Welding protection tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216298328U (en) |
-
2021
- 2021-11-05 CN CN202122705871.1U patent/CN216298328U/en active Active
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