CN118523119A - Connector with floating mechanism - Google Patents
Connector with floating mechanism Download PDFInfo
- Publication number
- CN118523119A CN118523119A CN202311686198.9A CN202311686198A CN118523119A CN 118523119 A CN118523119 A CN 118523119A CN 202311686198 A CN202311686198 A CN 202311686198A CN 118523119 A CN118523119 A CN 118523119A
- Authority
- CN
- China
- Prior art keywords
- insulator
- plug
- conductor
- connector
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004020 conductor Substances 0.000 claims abstract description 104
- 239000012212 insulator Substances 0.000 claims abstract description 61
- 239000000758 substrate Substances 0.000 claims description 31
- 239000011347 resin Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention provides a connector with a floating mechanism, which can restrain impedance change caused by floating so as to obtain stable high-frequency performance. A connector (3) with a floating mechanism is provided with: an insulator (9) movable in the connection axis direction with respect to the reference position of the external conductor; and a telescopic center conductor (4) having a movable contact part (10) that moves in conjunction with the insulator (9), wherein the positions of the movable contact part (10) and the insulator (9) relative to the center conductor (2 a) of the socket are kept constant regardless of the variation in the relative positions of the outer conductors (5, 6) in the connection axis direction.
Description
Technical Field
The present invention relates to a connector with a floating mechanism having excellent plug-to-socket connectivity, which is a coaxial connector used for connection of an electronic device and a coaxial cable, connection between electronic devices, and the like.
Background
The receptacle of the coaxial connector includes a receptacle-side center conductor disposed in the center of the receptacle, a receptacle-side housing disposed outside the receptacle-side center conductor, and a receptacle-side insulator interposed between the receptacle-side center conductor and the receptacle-side housing, and when connected to the plug, both the receptacle-side center conductor and the receptacle-side housing need to be appropriately connected to the plug-side center conductor and the plug-side housing of the other.
When the plug is connected to the socket, there is a case where the relative position of the connected plug and socket deviates from the design value in the axial direction due to the position of the substrate accommodated in the housing, the assembly tolerance of the plug and the housing, or the like, and in such a case, a stable connection is required.
Therefore, the following structure has been adopted in the past: the socket-side insulator is disposed on the inner side of the socket-side housing, and a margin for absorbing the deviation in the axial direction (connection direction) is provided on the plug-fitting side portion of the socket-side housing, allowing the deviation from the design value to occur in the axial direction, and always maintaining the connection between the plug and the socket.
Namely, the following structure is adopted: when the relative position of the plug and the receptacle is far from the design value, the gap between the axial end face of the plug-side insulator and the axial end face of the receptacle-side insulator becomes large, and when the relative position of the plug and the receptacle is near to the design value, the gap between the axial end face of the plug-side insulator and the axial end face of the receptacle-side insulator becomes small.
However, in the conventional art as described above, an air layer having a lower dielectric constant than the resin constituting the insulator is generated in the gap generated between the axial end face of the plug-side insulator and the axial end face of the receptacle-side insulator, and therefore there is a problem as follows: when the size of the gap between the axial end face of the plug-side insulator and the axial end face of the receptacle-side insulator varies due to the relative positional relationship in the axial direction between the plug and the receptacle, as shown in fig. 11, the impedance and reflection characteristics vary greatly due to the amount of floating, and the high-frequency performance is unstable.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 2003-29749
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made in view of such conventional problems, and an object thereof is to provide a connector with a floating mechanism that can suppress a change in impedance due to floating and obtain stable high-frequency performance.
Solution for solving the problem
In the invention described in claim 1 for solving the above-described problems, in the connector with a floating mechanism, each of a plug and a receptacle connected to each other includes a center conductor and a tubular outer conductor disposed outside the center conductor, and when the plug and the receptacle are connected, the connector with a floating mechanism allows a relative position between the outer conductors in a connection axis direction to vary within a predetermined range, wherein either one of the plug and the receptacle includes: an insulator movable in a connection axis direction with respect to a reference position of the external conductor; and a telescopic center conductor having a movable contact portion that moves in association with the insulator, wherein the positions of the movable contact portion and the insulator relative to any other center conductor of the plug or the socket are kept constant regardless of a variation in the relative positions of the outer conductors to each other in the connection axis direction.
The invention described in claim 2 is characterized in that, in addition to the structure of claim 1, the insulator is slidably held in the outer conductor, and the movable contact portion is held in the insulator.
The invention described in claim 3 is the configuration of claim 1, wherein the external conductor includes: a housing body fixed to the substrate; a movable housing slidably fitted to the housing main body; and a biasing unit that biases the movable housing in the opposite direction, wherein the insulator is held by the movable housing.
The invention described in claim 4 is characterized in that, in addition to the configuration of claim 1, a substrate-side insulator made of resin is provided at the substrate-side end portion of any other one of the plug and the socket, and the movable contact portion is brought into contact with a connection pattern on a substrate constituting the center conductor of any other one of the plug and the socket through a contact insertion hole penetrating the substrate-side insulator.
Effects of the invention
The connector with a floating mechanism according to the present invention has the structure described in claim 1, and can suppress a change in impedance due to floating, thereby obtaining stable high-frequency performance.
Further, in the present invention, by providing the structure described in claim 2, the movable contact portion of the center conductor and the insulator holding the movable contact portion integrally move with respect to the outer conductor, and the positions of the movable contact portion and the insulator can be stably maintained constant with respect to the counterpart contact, and the change in impedance can be suppressed.
In the present invention, by providing the structure described in claim 3, the design flexibility can be improved by matching the style of the mating connector.
Further, in the present invention, by providing the structure of claim 4, the entire connector can be made low-back.
Drawings
Fig. 1 is an exploded perspective view showing an example of a connector with a floating mechanism according to the present invention.
Fig. 2 is an exploded perspective view showing the plug of fig. 1.
Fig. 3 is a longitudinal section of the plug of fig. 1.
Fig. 4 is an exploded perspective view showing the socket of fig. 1.
Fig. 5 is a top view of the receptacle of fig. 1.
Fig. 6 is a bottom view of the socket of fig. 1 with the substrate-side insulator removed.
Fig. 7 is a sectional view of the receptacle of fig. 1 taken along line A-A.
Fig. 8 is a vertical sectional view showing a state of engagement of the connector with the floating mechanism of fig. 1, in which (a) is a view showing a state in which the substrate pitch is maintained at a design value, (b) is a view showing a state in which the substrate pitch is smaller than the design value, and (c) is a view showing a state in which the substrate pitch is larger than the design value.
Fig. 9 is a graph showing the difference in high frequency characteristics caused by the difference in fitting positions in the z-axis direction of the connector with the floating mechanism of fig. 1.
Fig. 10 is a longitudinal sectional view showing another embodiment of the connector with a floating mechanism according to the present invention, in which (a) is a view showing a state where the substrate pitch is smaller than the design value, and (b) is a view showing a state where the substrate pitch is larger than the design value.
Fig. 11 is a graph showing the difference in high frequency characteristics caused by the difference in fitting positions in the z-axis direction of a conventional connector with a floating mechanism.
Description of the reference numerals
1: A substrate; 2: a substrate; 3: a connector with a floating mechanism; 4: a telescoping center conductor; 5: an external conductor for a plug; 6: an outer conductor for a socket; 7: a plug; 8: a socket; 9: an insulator; 10: a movable contact portion; 11: a bottom insulator; 12: a conductor seat; 13: a stop piece; 14: a substrate connection sheet; 15: a coil spring; 16: a spring needle; 20: a resin base; 21: a substrate-side insulator; 22: an outer conductor body; 23: a guide piece; 24: a substrate connection sheet; 25: a gap; 30: an outer conductor; 31: a housing body; 32: a movable housing; 33: and a force applying unit.
Detailed Description
Next, an embodiment of the connector with a floating mechanism according to the present invention will be described with reference to examples shown in fig. 1 to 9. In the figures, reference numerals 1 and 2 denote substrates, and reference numeral 3 denotes a connector with a floating mechanism constituted by a coaxial connector connecting the substrates 1 and 2.
As shown in fig. 1 and 7, the connector 3 with a floating mechanism is constituted by a plug 7 and a receptacle 8, wherein the plug 7 and the receptacle 8 each include a central conductor 4, 2a and a tubular outer conductor 5, 6 disposed outside the central conductor 4, 2a, and the plug 7 and the receptacle 8 are connected to each other in a state allowing the relative positions of the outer conductors 5, 6 in the connection axis direction (z direction) to vary within a predetermined range when connected.
As shown in fig. 2 and 3, the plug 7 includes: a tubular outer conductor (hereinafter referred to as a plug outer conductor 5) made of a conductive metal material; an insulator 9 which is accommodated in the plug outer conductor 5 so as to be movable in the connection axis direction; a telescopic center conductor 4 having a movable contact portion 10 that moves in conjunction with the insulator 9; and a bottom insulator 11 closing the opening of the plug outer conductor 5 on the substrate 1 side.
As shown in fig. 2, the outer conductor 5 is integrally formed by punching and bending a conductive metal plate, and includes a square tubular conductor housing 12 having both ends open, stopper pieces 13, 13 projecting inward from one end (the socket 8 side end) of the conductor housing 12, and a plurality of board connection pieces 14, 14 extending outward from the other end (the board 1 side end) of the conductor housing 12, and the retractable center conductor 4 held by the insulator 9 is fitted into the opening of the conductor housing 12 on the board 1 side, and the bottom of the outer conductor 5 is closed by the bottom insulator 11.
The insulator 9 is integrally formed of an insulating resin, and includes a tubular conductor fitting portion 9a fitted in a predetermined position of the movable contact portion 10 and a rectangular sliding flange portion 9b protruding outward from one end of the conductor fitting portion 9a, and the sliding flange portion 9b is slidably fitted in the conductor housing 12, and the movable contact portion 10 held by the insulator 9 moves relative to a reference position of the outer conductor 5 in association with sliding of the insulator 9. The reference position of the outer conductor 5 may be set to any position of the conductor mount 12.
The insulator 9 is prevented from coming off the sliding flange 9b by the stopper pieces 13, 13 protruding inward from the socket 8 side end of the conductor housing 12, and the movable contact 10 held by the insulator 9 does not protrude to a certain extent or more.
As shown in fig. 3, the retractable center conductor 4 houses the spring pin 16 biased in the pushing-out direction by the coil spring 15 in the movable contact portion 10 having a bottomed cylindrical shape made of a conductive metal material so as to be freely moved in and out, and the tip of the crimp pin portion 16b of the spring pin 16 is projected from the tip of the movable contact portion 10, and is retracted by the relative movement between the movable contact portion 10 and the spring pin 16.
The spring pin 16 is made of a conductive metal material, and includes a piston portion 16a slidably held by the bottomed tubular movable contact portion 10 and a crimp pin portion 16b provided at one end of the piston portion 16a so as to protrude therefrom, and the crimp pin portion 16b passes through the opening portion and comes in and out of the movable contact portion 10.
Furthermore, the latch 16 is configured to: a chamfer inclined with respect to the axial direction is formed on an end surface of the piston portion 16a on the opposite side of the pressure contact pin portion 16b, and by pressing the chamfer with the coil spring 15, a component force in a direction orthogonal to the pressing direction is generated, whereby the circumferential surface of the spring pin 16 is always pressed against the inner surface of the movable contact portion 10, and current is supplied from the spring pin 16 through the movable contact portion 10.
The movable contact portion 10 is formed in a bottomed tubular shape having an opening at one end, and a contact 10a is bulged at the other end face portion to be closed, and the opening is inserted through the crimp pin portion 16b and the piston portion 16a is prevented from being pulled out.
Further, a release preventing flange 10b is integrally provided on the outer periphery of the movable contact portion 10 so as to be spaced apart from the contact 10a by a predetermined distance in the axial direction, and the bottom portion of the insulator 9 fitted from the contact side is abutted against the release preventing flange 10b, so that the insulator 9 is fixed at a position spaced apart from the contact 10a by a predetermined distance in the axial direction.
The bottom insulator 11 is formed of an insulating resin in a rectangular shape having a needle insertion hole 11a formed in the center, and the tip of the crimp needle portion 16b passes through the needle insertion hole 11a to be in contact with the connection pattern 1a on the substrate 1.
The plug 7 thus constituted is in the following state: the substrate connection pieces 14, 14 are fixed to the GND patterns 1b, 1b of the substrate 1 by solder or the like, whereby the tip end of the pressure-bonding pin portion 16b passes through the pin insertion hole 11a to be in contact with the connection pattern 1a on the substrate 1, whereby the movable contact portion 10 is biased by the coil spring 15 via the pressure-bonding pin portion 16b to be in contact with the stopper pieces 13, 13 by the sliding flange portion 9b, and whereby the movable contact portion 10 held by the insulator 9 is pushed out from the end of the conductor housing 12 in a state where the pressure-bonding pin portion 16b is in contact with the connection pattern 1a of the substrate 1 with a contact pressure of a constant or higher.
As shown in fig. 4 to 7, the socket 8 has the following structure: the socket includes a square tubular resin housing 20, a square tubular outer conductor (hereinafter referred to as a socket outer conductor 6) movably held in the resin housing 20, and a substrate-side insulator 21 closing the bottom of the resin housing 20, and the socket outer conductor 6 and the substrate-side insulator 21 are mounted on the resin housing 20 from the bottom side.
The resin base 20 is formed of an insulating resin material in a square tubular shape surrounded by side walls, and recesses 20a, 20a in which substrate connection pieces 24, 24 of the socket outer conductor 6 are exposed are formed at the bottom of each side wall.
Further, fixing grooves 20b and 20b that open to the bottom of the recess 20a are formed in the inner side portions of the respective side walls, and avoidance grooves 20c that are narrower than the fixing grooves 20b and 20b are formed in the inner sides of the fixing grooves 20b and 20 b.
The socket outer conductor 6 is integrally formed by punching and bending a conductive metal plate material, and includes a square tubular outer conductor main body 22 having both ends open, guide pieces 23, 23 extending obliquely outward from the four edges of one opening of the outer conductor main body 22, and a plurality of board connection pieces 24, 24 supported by the edges of the other opening of the outer conductor main body 22.
The outer conductor main body 22 is formed in a square tubular shape smaller than the inside of the housing, that is, in a size that causes a swingable gap 25 between the outer conductor main body 22 and the inner side surface of the resin housing 20 facing the outer side surface of the side plate disposed in a square shape, and the outer conductor main body 22 is movable in two directions (xy directions) orthogonal to each other orthogonal to the connection axis direction (z axis direction) in the housing.
Further, cantilever spring-like elastic contact pieces 22a, 22a protruding inward are formed on the side plates of the outer conductor main body 22, and the elastic contact pieces 22a, 22a are in contact with the outer peripheral surface of the plug outer conductor 5 fitted inside, so that the two outer conductors 5, 6 are mutually conducted.
The substrate connection pieces 24, 24 include: a plate-shaped press-in portion 24a press-fitted into a fixing groove 20b formed in the bottom of each side wall of the housing; a connection portion 24b extending from one end (lower end) of the press-fitting portion 24a to the outside orthogonal to the GND pattern 2b on the substrate 2; and a swinging spring portion 24c passing through the avoidance groove 20c to connect the press-in portion 24a and the outer conductor main body 22.
The swinging spring portion 24c is formed in a U shape, one end of which is supported by the upper edge of the press-fitting portion 24a, and the other end of which is supported by the lower edge of the outer conductor main body 22, and each side plate of the outer conductor main body 22 is swingably supported by the side wall of the opposing resin seat body 20.
The substrate-side insulator 21 is formed in a rectangular plate shape having a contact insertion hole 21a penetrating the center, and when connected to the plug 7, the movable contact 10 passes through the contact insertion hole 21a and contacts the connection pattern on the substrate 1 constituting the center conductor 1a of the receptacle 8.
In the connector 3 with a floating mechanism configured as described above, when the plug 7 is connected to the receptacle 8, as shown in fig. 8 (a) to (c), the conductor housing 12 of the plug 7 is fitted into the outer conductor body 22 of the receptacle 8, the two outer conductors 5 and 6 are connected to each other, the tip of the movable contact portion 10 passes through the contact insertion hole 21a to come into contact with the connection pattern 2a on the substrate 1 constituting the center conductor on the receptacle 8 side, and the movable contact portion 10 held by the insulator 9 is pushed into the conductor housing 12 against the urging force of the coil spring 15, and is conducted between the connection patterns 1a and 2a of the two substrates 1 and 2 via the telescopic center conductor 4.
In the connector 3 with the floating mechanism, when the relative position of the plug 7 and the receptacle 8 to be connected deviates from the design value in the z-axis direction due to the assembly tolerance of the substrates 1 and 2 with respect to the electronic device, the fitting position of the conductor housing 12 of the plug 7 and the outer conductor body 22 of the receptacle 8 in the z-axis direction changes, and the amount of pushing of the movable contact 10 with respect to the conductor housing 12 changes, whereby the deviation in the z-axis direction can be absorbed, allowing the deviation from the design value to occur in the axial direction.
Specifically, as shown in fig. 8 (b), when the relative position between the plug 7 and the receptacle 8 is closer to the design value, the fitting range between the conductor housing 12 of the plug 7 and the outer conductor body 22 of the receptacle 8 is increased, and the amount of pushing of the movable contact 10 with respect to the conductor housing 12 is increased, and when the relative position between the plug 7 and the receptacle 8 is farther than the design value, as shown in fig. 8 (c), the fitting range between the conductor housing 12 of the plug 7 and the outer conductor body 22 of the receptacle 8 is decreased, and the amount of pushing of the movable contact 10 with respect to the conductor housing 12 is decreased.
On the other hand, in the connector 3 with a floating mechanism, the position a of the movable contact 10 and the insulator 9 relative to the center conductor 2a on the receptacle 8 side is always kept constant regardless of the variation in the relative positions of the outer conductors 5, 6 in the connection axis direction, and therefore the arrangement of the air layer having different dielectric constants arranged around the center conductor 2a and the insulator 9 is always kept constant, and the impedance variation due to floating can be suppressed.
Therefore, in the connector 3 with a floating mechanism, as shown in fig. 9, the impedance and reflection characteristics are not different due to the floating amount, and stable high-frequency performance can be obtained.
In the above-described embodiment, the case where the movable contact portion 10 is held by the insulator 9 slidably held in the outer conductor 5 has been described, but the movable contact portion 10 may be configured to move in conjunction with the insulator 9, for example, as shown in fig. 10. The same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.
In this embodiment, the outer conductor 30 includes a housing main body 31 fixed to the substrate 1, a movable housing 32 slidably fitted to the housing main body 31, and a biasing means 33 such as a coil spring biasing the movable housing 32 toward the opposite side (receptacle side), and the insulator 9 is held by the movable housing 32 and moves in conjunction with the movable contact 10.
In this embodiment, as shown in fig. 10 (a) and (b), when the distance between the substrates 1 and 2 is changed and the movable housing 32 holding the insulator 9 is moved relative to the housing main body 31, the movable contact 10 moves in conjunction with the movement, and therefore the position a of the movable contact 10 and the insulator 9 relative to the center conductor 2a on the receptacle 8 side is always kept constant.
The configuration of the telescopic center conductor 4 is not limited to the above embodiment, and a plate spring structure formed by press working a conductive metal plate material can be also used.
Claims (4)
1. A connector with a floating mechanism, wherein a plug and a receptacle connected to each other each have a center conductor and a tubular outer conductor disposed outside the center conductor, and the connector with a floating mechanism allows the relative position of the outer conductors to vary within a predetermined range in the connection axis direction when the plug and the receptacle are connected,
Either the plug or the socket includes: an insulator movable in a connection axis direction with respect to a reference position of the external conductor; and a telescopic center conductor having a movable contact part moving in association with the insulator,
The positions of the movable contact portion and the insulator with respect to the center conductor of any other of the plug or the receptacle are kept constant regardless of the variation in the relative positions of the outer conductors to each other in the connection axis direction.
2. The connector with floating mechanism of claim 1, wherein,
The insulator is slidably held in the outer conductor, and the movable contact is held in the insulator.
3. The connector with floating mechanism of claim 1, wherein,
The outer conductor includes: a housing body fixed to the substrate; a movable housing slidably fitted to the housing main body; and a biasing unit that biases the movable housing in the opposite direction, wherein the insulator is held by the movable housing.
4. The connector with floating mechanism of claim 1, wherein,
The movable contact portion is provided with a resin substrate-side insulator at one of the other substrate-side end portions of the plug and the socket, and the movable contact portion is brought into contact with a connection pattern on a substrate constituting the center conductor of the other of the plug and the socket through a contact insertion hole penetrating the substrate-side insulator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023-024075 | 2023-02-20 | ||
| JP2023024075A JP2024117958A (en) | 2023-02-20 | 2023-02-20 | Floating connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118523119A true CN118523119A (en) | 2024-08-20 |
Family
ID=92284667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311686198.9A Pending CN118523119A (en) | 2023-02-20 | 2023-12-11 | Connector with floating mechanism |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2024117958A (en) |
| CN (1) | CN118523119A (en) |
-
2023
- 2023-02-20 JP JP2023024075A patent/JP2024117958A/en active Pending
- 2023-12-11 CN CN202311686198.9A patent/CN118523119A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2024117958A (en) | 2024-08-30 |
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