CN217156649U - Grounding resistance testing device - Google Patents
Grounding resistance testing device Download PDFInfo
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- CN217156649U CN217156649U CN202220193963.8U CN202220193963U CN217156649U CN 217156649 U CN217156649 U CN 217156649U CN 202220193963 U CN202220193963 U CN 202220193963U CN 217156649 U CN217156649 U CN 217156649U
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Abstract
The utility model discloses a ground resistance testing device, the ground resistance testing device includes the pincers body and protective sheath, the pincers body includes the binding clip and connects the pincers handle in binding clip one end, the pincers handle includes the protection shield, the pincers handle is equipped with the recess in the one end of keeping away from the binding clip, be provided with the display screen in the recess, the protection shield is connected in the edge of recess, and cover in the opening of recess, one side of protection shield is located the locating part; the protective sheath includes upper junction plate and lower connecting plate, the upper junction plate with the activity of lower connecting plate is enclosed and is closed and form the cladding the chamber that holds of binding clip, the outside limit of upper junction plate is equipped with the retaining member, the outside limit of lower connecting plate is equipped with the connecting piece, the upper junction plate with the lower connecting plate passes through the retaining member with the connecting piece can be dismantled to be connected and connect. The utility model discloses a binding clip is when need not the use, and the position of keeping silent is difficult for being infected with impurity such as dust, guarantees testing arrangement's normal use.
Description
Technical Field
The utility model relates to a technical field that ground resistance test was used, in particular to ground resistance testing arrangement.
Background
The earth resistance measuring device is a resistance measuring device, is used for measuring earth resistance of various devices and measuring conductor resistance value of low resistance in departments of electric power, post and telecommunications, railway, communication, mine and the like, can also measure soil resistivity and ground voltage, and is a pincerlike earth resistance meter which is common at present.
The jaw of the grounding resistance testing device in the prior art is always exposed in the air, and the jaw position may be polluted by dust or other impurities, so that the measurement precision is influenced, and even the measurement cannot be carried out.
Simultaneously because present liquid crystal display is made by the glass material, in the in-service use process, liquid crystal display produces the damage easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a ground resistance testing arrangement, when need not to use, the position of keeping silent is difficult for being infected with impurity such as dust, guarantees this ground resistance testing arrangement's normal use and measurement accuracy, and retaining member and connecting piece cooperation centre gripping are fixed in the outside of upper junction plate and lower connecting plate simultaneously, make difficult emergence circumstances such as drop between the two, further improve the binding clip and locate the stability that holds the intracavity.
In order to achieve the above object, the utility model provides an earth resistance testing arrangement, earth resistance testing arrangement includes:
the clamp comprises a clamp body and a clamp handle, wherein the clamp body comprises a clamp head and a clamp handle connected to one end of the clamp head, the clamp handle comprises a protective plate, a groove is formed in one end, far away from the clamp head, of the clamp handle, a display screen is arranged in the groove, the protective plate is connected to the edge of the groove and covers the opening of the groove, a limiting part is arranged on one side of the protective plate, and the limiting part is detachably connected with the protective plate;
the protective sheath, the protective sheath includes upper junction plate and lower connecting plate, the upper junction plate with the lower connecting plate activity is enclosed and is closed and form the cladding the chamber that holds of binding clip, the outside limit of upper junction plate is equipped with the retaining member, the outside limit of lower connecting plate is equipped with the connecting piece, the upper junction plate with the lower connecting plate passes through the retaining member with the connecting piece can be dismantled and connect.
In an optional embodiment, the locking members and the connecting members are provided with a plurality of connecting members, and one connecting member is correspondingly connected to one locking member.
In an optional embodiment, a first connecting portion is arranged on the periphery of the upper connecting plate, a second connecting portion is arranged on the periphery of the lower connecting plate, one of the first connecting portion and the second connecting portion is a positioning protrusion, the other of the first connecting portion and the second connecting portion is a positioning groove, and the positioning protrusion is fixed in the corresponding positioning groove.
In an alternative embodiment, an opening is formed at one longitudinal end of the upper connecting plate and one longitudinal end of the lower connecting plate, and the opening is communicated with the accommodating cavity.
In an optional embodiment, a longitudinal end of the positioning groove is bent inward to form a buckling groove, the buckling groove is communicated with the opening, a longitudinal end of the positioning protrusion is bent inward to form a buckling part, and the buckling part is fixedly corresponding to the inside of the buckling groove.
In an optional embodiment, the connecting member includes a connecting rod and two fixing blocks, the connecting rod is provided with a linkage groove, one fixing block is fixed on the outer side edge of the upper connecting plate and penetrates through the linkage groove, and the other fixing block is fixed at one end of the connecting rod and is provided with a through hole between the fixing block and the linkage groove.
In an optional embodiment, the locking member comprises an installation block, a locking block arranged on the installation block and a locking rod, the locking block is provided with a through threaded through hole, one end of the locking rod is provided with a threaded end matched with the threaded through hole, and the threaded end is arranged in the threaded through hole in a penetrating manner;
and/or, a semi-open groove for the connecting rod to penetrate is formed between the mounting block and the locking block, the fixing block is abutted against one side of the locking block, and the locking rod penetrates through the threaded through hole and the through hole in sequence.
In an optional embodiment, a sliding groove for the protection plate to slide is formed in the inner circumferential wall of the groove, a pulley capable of sliding in the sliding groove is installed at the bottom of the protection plate, and the pulley protrudes out of the protection plate.
In an optional embodiment, one end of the sliding groove is communicated with a concave platform, and the concave platform is provided with an insertion hole for inserting the limiting member.
In an optional embodiment, the protection plate is provided with a protruding block, a through hole and a through groove are formed in the protruding block, the through hole is communicated with the through groove, the limiting member is arranged in the through hole in a penetrating manner and penetrates through the through groove to be inserted into the insertion hole, the limiting member is connected with a spring, and the limiting member is movably connected in the through groove through the spring.
The utility model discloses a ground resistance testing device, ground resistance testing device includes the pincers body and protective sheath, the pincers body includes binding clip and connects the pincers handle in binding clip one end, the pincers handle includes the protection shield, the pincers handle is equipped with the recess in the one end of keeping away from the binding clip, be provided with the display screen in the recess, the protection shield is connected in the edge of recess, and cover in the opening of recess, one side of protection shield is located the locating part, the locating part can be dismantled with the backplate and be connected, through set up the protection shield above the display screen, be convenient for when not using the display screen, carry out the security protection to the display screen, avoid the display screen by the condition such as fish tail, the protective sheath includes upper junction plate and lower junction plate, upper junction plate and lower junction plate activity enclose and form the cladding the holding chamber of binding clip, therefore when the binding clip need not use, the jaw position is difficult for being infected with impurity such as dust, guarantee this ground resistance testing device's normal use and measurement accuracy, simultaneously the outside limit of upper junction plate is equipped with the retaining member, and the outside limit of lower connecting plate is equipped with the connecting piece, and the upper junction plate can be dismantled with lower connecting plate through retaining member and connecting piece and be connected, makes the difficult circumstances such as come off that take place between the two, further improves the binding clip and locates the stability that holds the intracavity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the ground resistance testing device of the present invention;
fig. 2 is an exploded view of the ground resistance testing apparatus shown in fig. 1;
FIG. 3 is a schematic diagram of an internal structure of the grounding resistance testing device shown in FIG. 1;
FIG. 4 is a schematic structural diagram of a clamp body in the grounding resistance testing apparatus shown in FIG. 1;
FIG. 5 is a schematic structural diagram of a protective sheath in the grounding resistance testing device shown in FIG. 1;
FIG. 6 is a schematic structural diagram of an upper connection plate in the grounding resistance testing apparatus shown in FIG. 5;
fig. 7 is a schematic structural view of a lower connecting plate in the grounding resistance testing device shown in fig. 5;
fig. 8 is an enlarged view of a portion a in fig. 3.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a ground resistance testing arrangement aims at setting up the intracavity that holds that upper junction plate and lower connecting plate formed through at the binding clip for the position of keeping silent is difficult for being infected with impurity such as dust, guarantees this ground resistance testing arrangement's normal use and measurement accuracy, and the protection shield that sets up on the display screen, protects the display screen not by the fish tail.
Referring to fig. 1 to 8, a specific structure of the ground resistance testing device according to the present invention will be described in a specific embodiment, in an embodiment of the present invention, the ground resistance testing device includes a clamp body 1 and a protective sleeve 2, the clamp body 1 includes a clamp head 11 and a clamp handle 12 connected to one end of the clamp head 11, the clamp handle 12 includes a protective plate 13, a groove 121 is formed at one end of the clamp handle 12 away from the clamp head 11, a display screen 3 is disposed in the groove 121, the protective plate 13 is connected to an edge of the groove 121 and covers an opening of the groove 121, a limiting member 131 is disposed at one side of the protective plate 13, and the limiting member 131 is detachably connected to the protective plate 13;
In an alternative embodiment, referring to fig. 2 and 5, a plurality of retaining members 211 and connecting members 221 are provided, and one connecting member 221 is correspondingly connected to one retaining member 211.
In this embodiment, in order to further stably fasten the upper connecting plate 21 above the lower connecting plate 22 and better wrap the binding clip 11 in the accommodating cavity 23, a plurality of, such as one, two, three or more than three, are provided for the locking members 211 and the connecting members 221, the plurality of locking members 211 are spaced on the outer side of the upper connecting plate 21, the plurality of connecting members 221 are spaced on the outer side of the lower connecting plate 22, and the plurality of connecting members 221 are correspondingly connected to the plurality of locking members 211, on one hand, increasing the number of the locking members 211 and the connecting members 221 can increase the connection stability between the upper connecting plate 21 and the lower connecting plate 22, on the other hand, the locking members 211 and the connecting members 221 are symmetrically distributed on the two outer sides of the upper connecting plate 21 and the lower connecting plate 22, can maintain the uniformity of the connection force of the upper connecting plate 21 and the lower connecting plate 22 on the two sides, and prevent the upper connecting plate 21 and the lower connecting plate 22 from being locally stressed unevenly and displaced, in this embodiment, it has one to set up retaining member 211 and connecting piece 221, and retaining member 211 and connecting piece 221 are located the middle part position on the both sides limit of upper junction plate 21 and lower junction plate 22 respectively to form even connection to upper junction plate 21 and lower junction plate 22, make the difficult circumstances such as drop that take place between the two, further improve binding clip 11 and locate the stability that holds in the chamber 23.
In an alternative embodiment, referring to fig. 5, 6 and 7, a first connecting portion 212 is disposed on a periphery of the upper connecting plate 21, a second connecting portion 222 is disposed on a periphery of the lower connecting plate 22, one of the first connecting portion 212 and the second connecting portion 222 is a positioning protrusion, the other one of the first connecting portion 212 and the second connecting portion 222 is a positioning groove, and the positioning protrusion is fixed in the corresponding positioning groove.
One longitudinal ends of the upper connecting plate 21 and the lower connecting plate 22 are formed with openings 24, and the openings 24 communicate with the accommodating cavities 23.
One longitudinal end of the second connecting portion 222 is bent inward to form a buckling groove 2221, the buckling groove 2221 is communicated with the opening 24, one longitudinal end of the first connecting portion 212 is bent inward to form a buckling portion 2121, and the buckling portion 2121 is fixed in the buckling groove 2221.
In this embodiment, in addition to the locking member 211 and the connecting member 221 provided between the upper connecting plate 21 and the lower connecting plate 22, a first connecting portion 212 is provided on the periphery of the upper connecting plate 21, a second connecting portion 222 is provided on the periphery of the lower connecting plate 22, one of the first connecting portion 212 and the second connecting portion 222 is a positioning protrusion, the other one of the first connecting portion 212 and the second connecting portion 222 is a positioning groove, the positioning protrusion is fixed in the corresponding positioning groove, and the positioning protrusion and the positioning groove are matched to play a role of pre-positioning, so as to facilitate the subsequent connection between the locking member 211 and the connecting member 221, so that the installation and connection between the upper connecting plate 21 and the lower connecting plate 22 are more reliable and stable, the upper connecting plate 21 is embedded in the lower connecting plate 22, thereby further defining the position between the upper connecting plate 21 and the lower connecting plate 22, further ensuring that no displacement occurs between the two.
Meanwhile, a buckling groove 2221 is formed by bending a longitudinal end of the second connecting portion 222 inward, the buckling groove 2221 is communicated with the opening 24, a buckling portion 2121 is formed by bending a longitudinal end of the first connecting portion 212 inward, the buckling portion 2121 is fixed in the buckling groove 2221, and the buckling portion and the buckling groove are limited to ensure that the upper connecting plate and the lower connecting plate are not displaced and dislocated, so that the position relationship between the upper connecting plate and the lower connecting plate is further positioned.
In an alternative embodiment, referring to fig. 5, 6 and 7, the connecting member 221 includes a connecting rod 2211 and two fixing blocks 2212, the connecting rod 2211 is provided with a linking slot 2211a, one fixing block 2212 is fixed to the outer side of the lower connecting plate 22 and passes through the linking slot 2211a, the other fixing block 2212 is fixed to one end of the connecting rod 2211, and a through hole 2213 is arranged between the fixing block 2211 and the linking slot 2211 a.
Retaining member 211 includes installation piece 2111, locates the latch segment 2112 of installation piece 2111 and wears to locate the check lock 2113 of latch segment 2112, and installation piece 2111 is equipped with and runs through the screw through-hole of latch segment 2112, in screw through-hole and through-hole 2213 were worn to locate in proper order to the check lock 2113's one end was equipped with and screw through-hole and through-hole matched with thread end.
The locking member 211 comprises an installation block 2111, a locking block 2112 arranged on the installation block 2111 and a locking rod 2113, the locking block 2112 is provided with a through threaded through hole, one end of the locking rod 2113 is provided with a threaded end matched with the threaded through hole, and the threaded end is arranged in the threaded through hole in a penetrating manner;
and/or a semi-open groove for the connection rod 2211 to penetrate is formed between the installation block 2111 and the locking block 2112, the fixing block 2212 abuts against one side of the locking block 2112, and the locking rod 2113 penetrates through the threaded through hole and the through hole in sequence.
In this embodiment, the connecting rod 2211 can rotate around the fixing block 2212 penetrating the linking slot 2211a, when the locking member 211 and the connecting member 221 are installed, the connecting rod 2211 rotates until a half-open slot (not shown) is formed between the locking block 2112 and the installation block 2111 for the connecting rod 2211 to pass through, the fixing block 2212 at one end of the connecting rod 2211 abuts against the locking block 2112, the through hole 2213 is arranged between the two threaded through holes, and by screwing the locking rod 2113, the locking rod 2113 passes through the through hole 2213 and the threaded through hole in sequence and is fixed on the threaded through hole on the mounting block 2111, the upper connecting plate 21 can be fixed on the lower connecting plate 22, when the upper connecting plate 21 and the lower connecting plate 22 need to be separated, similarly, the locking rod 2113 is screwed on to separate the locking rod 2113 from the threaded through hole and the through hole, and then the connecting rod 2211 is rotated to prevent the connecting rod 2211 from being clamped on the locking block 2112.
When the protective sleeve is used, the upper connecting plate 21 and the lower connecting plate 22 need to be installed in a matching manner, the periphery of the upper connecting plate 21 is provided with the first connecting part 212, the periphery of the lower connecting plate 22 is provided with the second connecting part 222, one of the first connecting part 212 and the second connecting part 222 is a positioning protrusion, the other of the first connecting part 212 and the second connecting part 222 is a positioning groove, the positioning protrusion is fixed in the corresponding positioning groove, the positioning protrusion plays a role of pre-positioning through the matching and positioning of the positioning protrusion and the positioning groove, the subsequent connection of the locking part 211 and the connecting part 221 is facilitated, meanwhile, the buckling part 2121 is fixed in the corresponding buckling groove 2221, the limitation between the buckling part 2121 and the buckling groove 2221 ensures that the upper connecting plate 21 and the lower connecting plate 22 cannot be displaced or dislocated, and the position relationship between the upper connecting plate 21 and the lower connecting plate 22 is further positioned, after the upper connecting plate 21 is completely buckled on the lower connecting plate 22, the locking part 211 and the connecting part 221 are matched and installed, the locking part 211 and the connecting part 221 are respectively arranged in the middle positions of two side edges of the upper connecting plate 21 and the lower connecting plate 22, so that the upper connecting plate 21 and the lower connecting plate 22 are uniformly connected, the situation that the upper connecting plate 21 and the lower connecting plate fall off is not prone to occurring, and the stability of the clamp head in the accommodating cavity is further improved.
In an alternative embodiment, referring to fig. 3, 4 and 8, a sliding slot 1211 for sliding the protection plate 13 is formed on an inner circumferential wall of the groove 121, and a pulley capable of sliding in the sliding slot 1211 is installed at the bottom of the protection plate 13, and the pulley protrudes from the protection plate 13.
A recess 1211a is communicated with one end of the slide groove 1211, and the recess 1211a is provided with an insertion hole 1321 into which the stopper 131 is inserted.
The protection plate 13 is provided with a protrusion 132, a through hole and a through groove are formed in the protrusion 132, the through hole is communicated with the through groove, the limiting member 131 is inserted into the through hole and inserted into the insertion hole 1321 through the through groove, the limiting member 131 is connected with a spring, and the limiting member 131 is movably connected into the through groove through the spring.
In this embodiment, the inner peripheral wall of the groove 121 is provided with a sliding slot 1211 for the protection plate 13 to slide, the bottom of the protection plate 13 is provided with a slidable pulley, the protection plate 13 slides in the sliding slot 1211 through the pulley, the protection plate 13 is provided with a protrusion 132, the protrusion 132 pushes the protection plate 13 to slide in the sliding slot 1211, the protrusion 132 is provided with a limiting member 131, the limiting member 131 is inserted into the insertion hole 1321 of the recess 1211a, and the limiting member 131 is connected with a spring, so that the limiting member 131 can be pushed and retracted.
When the protection plate 13 is used, the protection plate 13 is pushed to move by the protrusion 132, because the bottom of the protection plate 13 is provided with the slidable pulley, the protection plate 13 can smoothly move in the sliding slot, the display screen is arranged in the groove, the limiting member 131 is pulled to retract into the through slot, when the protection plate 13 moves to the recessed platform 1211a, the limiting member 131 is released, the limiting member 131 is inserted into the insertion hole under the action of the spring, and the protection plate 13 is fixed to the recessed platform 1211 a.
Through setting up protection shield 13, be convenient for when not using the display screen, carry out the security protection to the display screen, avoid the display screen by the condition such as fish tail.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the inventive concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a ground resistance testing arrangement which characterized in that: the ground resistance testing device includes:
the clamp comprises a clamp body and a clamp handle, wherein the clamp body comprises a clamp head and a clamp handle connected to one end of the clamp head, the clamp handle comprises a protective plate, a groove is formed in one end, far away from the clamp head, of the clamp handle, a display screen is arranged in the groove, the protective plate is connected to the edge of the groove and covers the opening of the groove, a limiting part is arranged on one side of the protective plate, and the limiting part is detachably connected with the protective plate;
the protective sheath, the protective sheath includes upper junction plate and lower connecting plate, the upper junction plate with the lower connecting plate activity is enclosed and is closed and form the cladding the chamber that holds of binding clip, the outside limit of upper junction plate is equipped with the retaining member, the outside limit of lower connecting plate is equipped with the connecting piece, the upper junction plate with the lower connecting plate passes through the retaining member with the connecting piece can be dismantled and connect.
2. The grounding resistance testing device of claim 1, wherein a plurality of locking members and a plurality of connecting members are provided, and one connecting member is correspondingly connected to one locking member.
3. The grounding resistance testing device according to claim 1, wherein a first connecting portion is provided at a periphery of the upper connecting plate, a second connecting portion is provided at a periphery of the lower connecting plate, one of the first connecting portion and the second connecting portion is a positioning protrusion, the other of the first connecting portion and the second connecting portion is a positioning groove, and the positioning protrusion is fixed in the corresponding positioning groove.
4. The ground resistance testing device according to claim 3, wherein an opening is formed at one longitudinal end of the upper connecting plate and the lower connecting plate, and the opening is communicated with the accommodating cavity.
5. The grounding resistance testing device of claim 4, wherein a longitudinal end of the second connecting portion is bent inward to form a pressing groove, the pressing groove is communicated with the opening, and a longitudinal end of the first connecting portion is bent inward to form a pressing portion, and the pressing portion is fixedly corresponding to the inside of the pressing groove.
6. The grounding resistance testing device of claim 2, wherein the connecting member comprises a connecting rod and two fixing blocks, the connecting rod is provided with a linkage groove, one of the fixing blocks is fixed on the outer side edge of the lower connecting plate and penetrates through the linkage groove, the other fixing block is fixed at one end of the connecting rod, and a through hole is formed between the fixing block and the linkage groove.
7. The grounding resistance testing device according to claim 6, wherein the locking member comprises a mounting block, a locking block arranged on the mounting block and a locking rod, the locking block is provided with a threaded through hole therethrough, one end of the locking rod is provided with a threaded end matched with the threaded through hole, and the threaded end is arranged in the threaded through hole;
and/or, a semi-open groove for the connecting rod to penetrate is formed between the mounting block and the locking block, the fixing block is abutted against one side of the locking block, and the locking rod penetrates through the threaded through hole and the through hole in sequence.
8. The grounding resistance testing device of claim 1, wherein the inner peripheral wall of the groove is provided with a sliding groove for the protection plate to slide, the bottom of the protection plate is provided with a pulley sliding in the sliding groove, and the pulley protrudes out of the protection plate.
9. The grounding resistance testing device of claim 8, wherein one end of the sliding groove is communicated with a concave platform, and the concave platform is provided with an insertion hole for inserting the limiting member.
10. The grounding resistance testing device of claim 9, wherein the protection plate is provided with a protrusion, the protrusion is provided with a through hole and a through groove therein, the through hole is communicated with the through groove, the limiting member is inserted into the through hole and inserted into the insertion hole through the through groove, the limiting member is connected with a spring, and the limiting member is movably connected in the through groove through the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220193963.8U CN217156649U (en) | 2022-01-21 | 2022-01-21 | Grounding resistance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220193963.8U CN217156649U (en) | 2022-01-21 | 2022-01-21 | Grounding resistance testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217156649U true CN217156649U (en) | 2022-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220193963.8U Active CN217156649U (en) | 2022-01-21 | 2022-01-21 | Grounding resistance testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217156649U (en) |
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2022
- 2022-01-21 CN CN202220193963.8U patent/CN217156649U/en active Active
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