CN218524768U - Sensor mounting structure and driving device - Google Patents
Sensor mounting structure and driving device Download PDFInfo
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- CN218524768U CN218524768U CN202222625867.9U CN202222625867U CN218524768U CN 218524768 U CN218524768 U CN 218524768U CN 202222625867 U CN202222625867 U CN 202222625867U CN 218524768 U CN218524768 U CN 218524768U
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Abstract
The utility model discloses a sensor mounting structure and drive arrangement, sensor mounting structure include circuit board, sensor and electrically conductive piece, the circuit board is equipped with the circuit that awaits measuring, the circuit that awaits measuring is equipped with first awaiting measuring point and second awaiting measuring point, the sensor with the circuit board is connected, the sensor runs through and has seted up the inspection hole, first awaiting measuring point is located the periphery of sensor, the second awaiting measuring point with the inspection hole corresponds, electrically conductive piece includes first tip and second tip, first tip with first awaiting measuring point is connected, the second tip passes the inspection hole and with the second awaits measuring point and connects. The utility model discloses a current sensor mounting structure adopts the measuring hole to detect the electric current that awaits measuring of electrically conductive piece, and the sampling precision is high, moreover, causes the measuring hole through electrically conductive piece with the electric current on the circuit that awaits measuring, can make sensor mounting structure's whole size little.
Description
Technical Field
The utility model relates to a circuit detects technical field, especially relates to a sensor mounting structure and drive arrangement.
Background
The current sensor mounting structure is a commonly used component in a current sampling system, can detect the magnitude of output current in the driving device in real time, and is selected according to the precision requirement of required sampling. However, in the conventional driving device, in the case of low sampling accuracy requirement, the size of the current sensor mounting structure is small, which can meet the space requirement, and in the case of high sampling accuracy requirement, the size of the current sensor mounting structure needs to be set larger, which meets the high sampling accuracy requirement, but causes the waste of space.
In view of the above-mentioned drawbacks, it is necessary to provide a new sensor mounting structure and driving apparatus.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a sensor mounting structure and drive arrangement, the big problem of size that corresponds when aiming at solving current sensor mounting structure's sampling precision height.
In order to achieve the above object, the utility model provides a sensor mounting structure includes circuit board, sensor and electrically conductive piece, the circuit board is equipped with the circuit that awaits measuring, the circuit that awaits measuring is equipped with first waiting for measuring point and second waiting for measuring point, the sensor with the circuit board is connected, the sensor runs through and has seted up the inspection hole, first waiting for measuring point is located the periphery of sensor, the second waiting for measuring point with the inspection hole corresponds, electrically conductive piece includes first end and second end, first end with first waiting for measuring point is connected, the second end pass the inspection hole and with the second waits for measuring point to connect.
Preferably, the sensor mounting structure further comprises a first conductive connecting piece, one end of the first conductive connecting piece is welded to the first point to be measured, and the other end of the first conductive connecting piece is detachably connected to the first end portion.
Preferably, a first via hole is formed in the circuit board in a penetrating manner, the first via hole is arranged close to the first point to be measured, the first conductive connecting piece comprises a first clamping claw, and the first clamping claw is inserted into the first via hole and welded with the first point to be measured.
Preferably, the sensor mounting structure further includes a second conductive connecting member, one end of the second conductive connecting member is welded to the second spot to be measured, and the other end of the second conductive connecting member is detachably connected to the second end.
Preferably, a second through hole penetrates through the circuit board, the second through hole is arranged close to the second point to be tested, the second conductive connecting piece comprises a second clamping claw, and the second clamping claw is inserted into the second through hole and is welded with the second point to be tested.
Preferably, the first conductive connecting piece is provided with a plurality of first claws arranged at intervals, and the number of the first through holes is consistent with that of the first claws and is arranged in a one-to-one correspondence manner; the second conductive connecting piece is provided with a plurality of second clamping claws which are arranged at intervals, and the number of the second through holes is consistent with that of the second clamping claws and is arranged in a one-to-one correspondence manner.
Preferably, the conductive piece includes a first bending portion, a second bending portion and a third bending portion connected in sequence, the first bending portion and the second bending portion are both extended along the direction of the opening of the detection hole, one end of the first bending portion, which is far away from the second bending portion, is bent towards the direction of the sensor to form the first end portion, the third bending portion is inserted into the detection hole, and one end of the third bending portion, which is far away from the second bending portion, is the second end portion.
Preferably, the number of the circuits to be tested is multiple, the number of the conductive pieces is consistent with that of the circuits to be tested and is arranged in a one-to-one correspondence manner, and the second end portion of each conductive piece penetrates through the detection hole.
Preferably, the periphery of the sensor is provided with a plurality of mounting holes which are arranged at intervals and through which bolts pass, the circuit board is provided with a plurality of fixing holes, and the fixing holes and the mounting holes are consistent in number and are arranged in one-to-one correspondence; and/or, a clamping piece is arranged on the sensor, and a clamping groove matched with the clamping piece is arranged on the circuit board.
In addition, the utility model also provides a drive arrangement, drive arrangement includes as above sensor mounting structure.
The utility model discloses among the technical scheme, sensor mounting structure includes the circuit board, sensor and electrically conductive piece, the circuit board is equipped with the circuit that awaits measuring, the circuit that awaits measuring is equipped with first waiting for measuring point and second waiting for measuring point, the sensor runs through and has seted up the inspection hole, and make first waiting for measuring point be located the periphery of sensor, the second waiting for measuring point corresponds with the inspection hole, the electric current that awaits measuring on the circuit that awaits measuring is through first waiting for measuring point and second waiting for measuring point in proper order, or wait measuring point and first waiting for measuring point through the second in proper order, the first end of electrically conductive piece is connected with first waiting for measuring point, the second end of electrically conductive piece passes the inspection hole and waits for measuring point with the second and is connected, thereby make the electric current through electrically conductive piece on the circuit that awaits measuring, and pass through the inspection hole through electrically conductive piece, thereby make the sensor can detect the electric current of the circuit that awaits measuring. The utility model discloses a current sensor mounting structure adopts the measuring hole to detect the electric current that awaits measuring of electrically conductive piece, and the sampling precision is high, moreover, causes the measuring hole through electrically conductive piece with the electric current on the circuit that awaits measuring, can be so that sensor mounting structure's whole size is little.
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 view illustrating a view structure of a sensor mounting structure according to an embodiment of the present invention;
fig. 2 is a schematic view of another view structure of a sensor mounting structure according to an embodiment of the present invention;
fig. 3 is an enlarged schematic view of a portion a in fig. 2.
The reference numbers indicate:
| reference numerals | Name(s) | Reference numerals | Name (R) |
| 1 | |
31 | |
| 2 | Sensor with a sensor element | 32 | A |
| 21 | |
4 | First conductive connecting |
| 22 | |
41 | |
| 3 | Conductive member |
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 of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments 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 attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The utility model provides a sensor mounting structure and drive arrangement aims at solving the big problem of size that corresponds when current sensor mounting structure's sampling precision is high.
Referring to fig. 1 to 3, the sensor mounting structure includes a circuit board 1, a sensor 2 and a conductive member 3, the circuit board 1 is provided with a circuit to be measured, the circuit to be measured is provided with a first point to be measured and a second point to be measured, the sensor 2 is connected to the circuit board 1, the sensor 2 is provided with a detection hole 21 in a penetrating manner, the first point to be measured is located at the periphery of the sensor 2, the second point to be measured corresponds to the detection hole 21, the conductive member 3 includes a first end portion 31 and a second end portion 32, the first end portion 31 is connected to the first point to be measured, and the second end portion 32 penetrates through the detection hole 21 and is connected to the second point to be measured.
The utility model discloses a sensor mounting structure includes circuit board 1, sensor 2 and electrically conductive piece 3, circuit board 1 is equipped with the circuit that awaits measuring, the circuit that awaits measuring is equipped with first waiting for measuring point and second waiting for measuring point, sensor 2 runs through and has seted up inspection hole 21, sensor 2 is connected with circuit board 1, and make first waiting for measuring point be located sensor 2's periphery, the second waiting for measuring point corresponds with inspection hole 21, the electric current that awaits measuring on the circuit that awaits measuring is through first waiting for measuring point and second waiting for measuring point in proper order, or wait measuring point and first waiting for measuring point through the second in proper order, the first end 31 and the first waiting for measuring point of electrically conductive piece 3 are connected, the second end 32 of electrically conductive piece 3 passes inspection hole 21 and waits for measuring point with the second and is connected, thereby make the electric current on the circuit that awaits measuring pass through electrically conductive piece 3, and pass through inspection hole 21 through electrically conductive piece 3, thereby make sensor 2 can detect the electric current of the circuit that awaits measuring. The utility model discloses a current sensor mounting structure adopts inspection hole 21 to detect the electric current that awaits measuring of electrically conductive piece 3, and the sampling precision is high, moreover, causes inspection hole 21 through electrically conductive piece 3 the electric current on the circuit that awaits measuring, can make sensor mounting structure's whole size little. It should be noted that the input/output pins of the sensor may be presented in the form of pin header, or may be presented in the form of connector such as DB9, which is a part of the prior art.
In an embodiment, the sensor mounting structure further includes a first conductive connecting member 4, one end of the first conductive connecting member 4 is welded to the first point to be measured, and the other end of the first conductive connecting member 4 is detachably connected to the first end portion 31. In order to protect the first point to be measured from being affected by the assembly and disassembly of the conductive piece 3, the sensor mounting structure further comprises a first conductive connecting piece 4. One end of the first conductive connecting piece 4 is welded with the first point to be measured, the other end of the first conductive connecting piece 4 is detachably connected with the first end part 31, and the first end part 31 of the conductive piece 3 can be fixed to the threaded hole through a bolt by forming the threaded hole on the first conductive connecting piece 4. When the conductive piece 3 needs to be detached from the first point to be tested, only the first end portion 31 of the conductive piece 3 needs to be detached from the first conductive connecting piece 4, and due to the first conductive connecting piece 4, the first point to be tested cannot be damaged by frequent detachment of the conductive piece 3.
Furthermore, a first via hole penetrates through the circuit board 1 and is arranged close to the first point to be measured, the first conductive connecting piece 4 comprises a first clamping jaw 41, and the first clamping jaw 41 is inserted into the first via hole and is welded with the first point to be measured. In order to ensure that the first conductive connecting piece 4 is more reliably connected with the first point to be detected, so as to improve the detection precision and reliability, a first through hole is formed in the circuit board 1 in a penetrating manner, the first through hole is arranged close to the first point to be detected, a first clamping jaw 41 is arranged on the first conductive connecting piece 4, the first clamping jaw 41 can be inserted into the first through hole before the first conductive connecting piece 4 is welded with the circuit board 1, so that the first conductive connecting piece 4 can be accurately positioned on the circuit board 1, the first clamping jaw 41 can be inserted into the first through hole and expose one side of the circuit board 1 departing from the first conductive connecting piece 4 to be welded with a pad on the circuit board 1, the pad can be preset to be electrically connected with the first point to be detected, so that the first conductive connecting piece 4 is electrically connected with the first point to be detected, in addition, the first clamping jaw 41 can be bent to be tightly attached to the side after exposing one side of the circuit board 1 departing from the first conductive connecting piece 4, so that the first conductive connecting piece 4 can be clamped on the circuit board 1. In order to obtain the corresponding requirements of safety regulations, installation space and the like, the second end part 32 of the conductive piece 3 can be directly welded on the reserved welding disc on the circuit board 1 after passing through the detection hole 21.
In addition, in an embodiment, the sensor mounting structure further includes a second conductive connecting member, one end of the second conductive connecting member is soldered to the second spot to be measured, and the other end of the second conductive connecting member is detachably connected to the second end portion 32. In order to protect the second point to be measured from being influenced by the disassembly and assembly of the conductive piece 3, the sensor mounting structure further comprises a second conductive connecting piece. One end of the second conductive connecting piece is welded with the second spot to be tested, the other end of the second conductive connecting piece is detachably connected with the second end part 32, a threaded hole is formed in the second conductive connecting piece through the connecting piece, and the second end part 32 of the conductive piece 3 is fixed to the threaded hole through a bolt. When the conductive member 3 needs to be detached from the second point to be measured, only the second end portion 32 of the conductive member 3 needs to be detached from the second conductive connecting member, and the second point to be measured cannot be damaged due to the second conductive connecting member due to frequent detachment of the conductive member 3.
The circuit board 1 is provided with a second through hole in a penetrating mode, the second through hole is arranged close to a second point to be tested, the second conductive connecting piece comprises a second clamping jaw, and the second clamping jaw is inserted into the second through hole and is welded with the second point to be tested. In order to ensure that the second conductive connecting piece is more reliably connected with the second point to be detected and improve the detection precision and reliability, a second through hole is formed in the circuit board 1 in a penetrating mode, the second through hole is arranged close to the second point to be detected, a second clamping jaw is arranged on the second conductive connecting piece, the second clamping jaw can be inserted into the second through hole before the second conductive connecting piece is welded with the circuit board 1, so that the second conductive connecting piece can be accurately positioned on the circuit board 1, the second clamping jaw can be further inserted into the second through hole and exposed out of one side of the circuit board 1, which is far away from the second conductive connecting piece, and welded with a welding pad on the circuit board 1, the welding pad can be preset to be electrically connected with the second point to be detected, so that the second conductive connecting piece is electrically connected with the second point to be detected, in addition, the second clamping jaw can be bent to be tightly attached to the side after the side of the circuit board 1, which is far away from the second conductive connecting piece, so that the second conductive connecting piece can be clamped on the circuit board 1.
Further, in order to realize multiple functions, the first conductive connecting member 4 has a plurality of first claws 41 arranged at intervals, and the number of the first via holes is consistent with that of the first claws 41 and is arranged in one-to-one correspondence; the second conductive connecting piece is provided with a plurality of second clamping claws arranged at intervals, and the number of the second through holes is consistent with that of the second clamping claws and the second through holes are arranged in a one-to-one correspondence manner. The first conductive connecting piece 4 is provided with a plurality of first clamping claws 41 which are arranged at intervals, the first clamping claws 41 are inserted into corresponding first through holes and are welded with the reserved welding pads on the circuit board 1, and the plurality of first clamping claws 41 can ensure that the first conductive connecting piece 4 is more reliably connected with the circuit board 1, so that the detection reliability is improved; in a similar way, the second conductive connecting piece is provided with a plurality of second clamping jaws which are arranged at intervals, the second clamping jaws are inserted into corresponding second through holes and are welded with the reserved welding pads on the circuit board 1, the plurality of second clamping jaws can enable the second conductive connecting piece to be more reliable in connection with the circuit board 1, and the detection reliability is improved.
In addition, in the above embodiment, the conductive component 3 includes a first bending portion, a second bending portion and a third bending portion connected in sequence, the first bending portion and the second bending portion are both extended along the opening direction of the detection hole 21, one end of the first bending portion away from the second bending portion is bent towards the direction away from the sensor 2 to form the first end portion 31, the third bending portion is inserted into the detection hole 21, and one end of the third bending portion away from the second bending portion is the second end portion 32. In order to make the sensor mounting structure have structural consistency, the conductive component 3 can be set as a first bending part, a second bending part and a third bending part which are sequentially connected in a bending way, the conductive component 3 is bent to form the first bending part, the second bending part and the third bending part, the first bending part and the second bending part are both arranged along the direction of the detection hole 21 in an extending way, one end of the first bending part, which is far away from the second bending part, is bent to form a first end part 31 in the direction of the first bending part, which is far away from the sensor 2, a via hole for a bolt to pass through is formed in the first end part 31, the bolt passes through the via hole and is screwed into a threaded hole in the first conductive connecting part 4, so that the first end part 31 is connected with the first conductive connecting part 4, the third bending part is inserted into the detection hole 21, one end of the third bending part, which is far away from the second bending part, is a second end part 32, and the second end part 32 can be inserted into the via hole reserved on the circuit board 1 and welded with a pad on the circuit board 1. The conductive member 3 is one of a conductive post, a conductive wire, and a conductive flat cable. In addition, the conductive member 3 may also adopt a conductive column, a conductive wire, or the like as a conductive conductor.
In one embodiment, the number of the circuits to be tested is multiple, the number of the conductive members 3 is the same as the number of the circuits to be tested and the conductive members 3 are arranged in a one-to-one correspondence manner, and the second end portion 32 of each conductive member 3 penetrates through the detection hole 21. When the circuit that awaits measuring is a plurality of, accessible sets up the electrically conductive piece 3 that quantity and the unanimous and one-to-one setting of the quantity of the circuit that awaits measuring were put, and each electrically conductive piece 3 all passes inspection hole 21 to can make a sensor 2 detectable a plurality of circuits that await measuring, moreover, still can detect the circuit parameter of arbitrary combined circuit in the circuit that awaits measuring, reduce the quantity of sensor, practice thrift sensor mounting structure's occupation space.
Further, in an embodiment, the periphery of the sensor 2 is provided with a plurality of mounting holes 22 which are arranged at intervals and through which bolts pass, and the circuit board 1 is provided with a plurality of fixing holes, and the number of the fixing holes is consistent with that of the mounting holes 22 and the fixing holes are arranged in a one-to-one correspondence manner. When assembling sensor mounting structure, can reserve a plurality of fixed orificess on circuit board 1, set up a plurality of mounting holes 22 on sensor 2, the quantity of fixed orificess is unanimous with the quantity of mounting hole 22 and the fixed orifices sets up with mounting hole 22 one-to-one, and the bolt passes mounting hole 22 and the fixed orifices that corresponds to lock through the nut, in order to be connected sensor 2 and circuit board 1 firmly. The shell of the sensor 2 is made of plastic, and fixing holes can be formed in the periphery of the shell for convenience in installation.
In another embodiment, the sensor 2 is provided with a clamping member, and the circuit board 1 is provided with a clamping groove matched with the clamping member. For making sensor 2 and circuit board 1 can the rapid Assembly, can be connected sensor 2 and circuit board 1 through the joint mode, be equipped with a plurality of joint spares on the sensor 2, be equipped with a plurality of joint grooves on the circuit board 1, the joint groove is unanimous with the quantity of joint spare and joint spare one-to-one joint is in the joint inslot.
In another embodiment, to securely connect the sensor 2 to the circuit board 1, the sensor 2 and the circuit board 1 may be pre-assembled by clamping and then the sensor 2 and the circuit board 1 may be connected by bolts.
Additionally, the utility model also provides a drive arrangement, drive arrangement include as above sensor mounting structure. The specific structure of the sensor mounting structure in the driving device refers to the above embodiments, and since the driving device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. A sensor mounting structure, characterized by comprising:
the circuit board is provided with a circuit to be tested, and the circuit to be tested is provided with a first point to be tested and a second point to be tested;
the sensor is connected with the circuit board, a detection hole is formed in the sensor in a penetrating mode, the first point to be detected is located on the periphery of the sensor, and the second point to be detected corresponds to the detection hole;
and the conductive piece comprises a first end part and a second end part, the first end part is connected with the first point to be measured, and the second end part penetrates through the detection hole and is connected with the second point to be measured.
2. The sensor-mounting structure according to claim 1, further comprising a first conductive connecting member, one end of which is welded to the first point to be measured, and the other end of which is detachably connected to the first end portion.
3. The sensor mounting structure according to claim 2, wherein a first via hole is formed through the circuit board, the first via hole is disposed near the first point to be measured, and the first conductive connecting member includes a first claw, and the first claw is inserted into the first via hole and soldered to the first point to be measured.
4. The sensor mounting structure according to claim 3, further comprising a second conductive connecting member, one end of which is soldered to the second spot to be measured, and the other end of which is detachably connected to the second end portion.
5. The sensor mounting structure according to claim 4, wherein a second via hole is formed through the circuit board, the second via hole is disposed near the second point to be measured, and the second conductive connecting member includes a second claw inserted into the second via hole and welded to the second point to be measured.
6. The sensor mounting structure according to claim 5, wherein the first conductive connecting member has a plurality of the first claws arranged at intervals, and the number of the first vias is identical to that of the first claws and is arranged in one-to-one correspondence; the second conductive connecting piece is provided with a plurality of second clamping claws which are arranged at intervals, and the number of the second through holes is consistent with that of the second clamping claws and is arranged in a one-to-one correspondence manner.
7. The sensor mounting structure according to any one of claims 1 to 6, wherein the conductive member includes a first bending portion, a second bending portion, and a third bending portion connected in sequence, the first bending portion and the second bending portion are both extended along the opening direction of the detection hole, one end of the first bending portion away from the second bending portion is bent in the direction away from the sensor to form the first end portion, the third bending portion is inserted into the detection hole, and one end of the third bending portion away from the second bending portion is the second end portion.
8. The sensor mounting structure according to any one of claims 1 to 6, wherein the number of the circuits to be tested is plural, the number of the conductive members is the same as the number of the circuits to be tested and is arranged in one-to-one correspondence, and the second end portion of each of the conductive members passes through the detection hole.
9. The sensor mounting structure according to any one of claims 1 to 6, wherein a plurality of mounting holes are formed in the outer periphery of the sensor at intervals and through which bolts pass, and a plurality of fixing holes are formed in the circuit board, the fixing holes being in correspondence with the mounting holes in number;
and/or the presence of a gas in the atmosphere,
the sensor is provided with a clamping piece, and the circuit board is provided with a clamping groove matched with the clamping piece.
10. A drive device characterized by comprising the sensor mounting structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222625867.9U CN218524768U (en) | 2022-09-30 | 2022-09-30 | Sensor mounting structure and driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222625867.9U CN218524768U (en) | 2022-09-30 | 2022-09-30 | Sensor mounting structure and driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218524768U true CN218524768U (en) | 2023-02-24 |
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ID=85247892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222625867.9U Active CN218524768U (en) | 2022-09-30 | 2022-09-30 | Sensor mounting structure and driving device |
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| Country | Link |
|---|---|
| CN (1) | CN218524768U (en) |
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2022
- 2022-09-30 CN CN202222625867.9U patent/CN218524768U/en active Active
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