CN219498243U - Cylindrical terminal, conductive structure and charging seat - Google Patents
Cylindrical terminal, conductive structure and charging seat Download PDFInfo
- Publication number
- CN219498243U CN219498243U CN202320618783.4U CN202320618783U CN219498243U CN 219498243 U CN219498243 U CN 219498243U CN 202320618783 U CN202320618783 U CN 202320618783U CN 219498243 U CN219498243 U CN 219498243U
- Authority
- CN
- China
- Prior art keywords
- terminal
- plate
- board
- conductive
- barrel
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The utility model discloses a tubular terminal, a conductive structure and a charging seat, wherein the tubular terminal is formed by stamping and rolling a composite plate, and a positioning part is injection molded on the outer side of a conductive part and/or a terminal base body, so that the production can be carried out by adopting a stamping and injection molding mode; meanwhile, the composite board comprises the first board and the second board positioned at the inner side of the first board, the hardness of the first board is larger than that of the second board, and the resistivity of the second board is not larger than that of the first board.
Description
Technical Field
The utility model relates to the technical field of charging auxiliary equipment, in particular to a cylindrical terminal, a conductive structure and a charging seat.
Background
In the field of electrical connection, a plurality of electrical circuits are required to be connected by terminals, so that the plug-in terminals and the cylindrical terminals are in plug-in connection in most of the current use, and particularly, on a wire harness with large current and large wire diameter, such as a charging gun head and a charging seat for charging a battery of a new energy automobile which are rapidly developed at present, the internal terminals are of a plug-in terminal and cylindrical terminal plug-in structure.
As shown in fig. 1, the conventional barrel terminal generally includes a conductive part 10, a terminal base 20 and a plugging part 30 at the front end of the base, which are sequentially disposed along the axial direction, and a positioning part 40 for fixing and sealing the barrel terminal is disposed outside the conductive part 10 or the terminal base 20, and at present, the conventional barrel terminal has the following disadvantages when in use: firstly, because the structure is complex, the existing cylindrical terminal is generally machined in a machining mode, the precision is low, the weight is large, the productivity is low, and the cost of the cylindrical terminal is high; secondly, the plug-in part 30 of the cylindrical terminal is a clamping cavity 302 surrounded by a plurality of elastic arms 301, and the clamping cavity can accommodate the insertion of the plug-in terminal 2; the elastic arms are elastic and are easy to repeatedly pull and plug the opposite plug terminals to deform, once the elastic arms deform, the elastic force applied to the opposite plug terminals by each elastic arm is reduced, the contact area between the opposite plug terminals and the cylindrical terminals is reduced, the stress on the contact positions is increased, the heat productivity exceeds the standard, the temperature is increased, and particularly in high-voltage charging, accidents are easily caused to endanger life and property safety due to rapid temperature increase.
Disclosure of Invention
In view of the above, the present utility model provides a barrel terminal, a conductive structure and a charging stand, which solve the technical problems mentioned in the background art.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the tubular terminal comprises a conductive part, a tubular terminal matrix and a plug-in part, wherein the conductive part, the tubular terminal matrix and the plug-in part are sequentially arranged along the axial direction of the tubular terminal, the plug-in part is positioned at the front end of the terminal matrix, a positioning part for fixing the tubular terminal is arranged at the outer side of the conductive part and/or the terminal matrix, the conductive part, the terminal matrix and the plug-in part are formed by punching and rolling composite plates, and the positioning part is injection-molded at the outer side of the conductive part and/or the terminal matrix;
the composite board comprises a first board and a second board positioned on the inner side of the first board, wherein the hardness of the first board is larger than that of the second board, and the resistivity of the second board is not larger than that of the first board.
In a preferred embodiment, the second sheet material is laminated on the inner side of the first sheet material and at least on the first sheet material in the region corresponding to the conductive portion and the plug portion.
In a preferred embodiment, the first sheet material is coated on the outer side of the second sheet material and at least covers the area of the second sheet material corresponding to the plugging portion.
In a preferred embodiment, the second sheet material is combined with the first sheet material by cold rolling.
In a preferred embodiment, the ratio of the thickness of the first sheet material to the composite sheet material is 1:5 to 3:5.
In a preferred embodiment, the material of the first plate is steel or stainless steel; the second plate is made of copper or copper alloy.
In a preferred embodiment, the plugging portion is at least two elastic arms formed at the front end of the terminal base body in an extending manner along the axial direction, and clamping cavities for accommodating the opposite plug terminals are formed on the inner sides of the at least two elastic arms.
In a preferred embodiment, the conductive part is a conductive sheet formed by extending at the rear end of the terminal base, and the free end of the conductive sheet is folded outwards at the end position, so that the second plate is positioned on the end face of the conductive sheet on the side far away from the terminal base.
In a preferred embodiment, the free end of the conductive sheet is bent to form a plate-shaped structure perpendicular to the axis of the cylindrical terminal, the positioning portion is injection molded on the outer side of the conductive sheet, and the central axes of the plate-shaped structure, the positioning portion and the terminal base body are coincident.
In a preferred embodiment, the plate-like structure is provided with at least one folded edge which is folded in the direction of the terminal base body and is inserted into the positioning portion.
In a preferred embodiment, the positioning part is provided with at least one sealing groove for installing a sealing ring and at least one positioning groove for installing the positioning part in the radial direction.
The utility model relates to a conductive structure, which comprises a cylindrical terminal and an opposite-plug terminal matched with the cylindrical terminal, wherein the opposite-plug terminal is connected to a plug-in part of the cylindrical terminal in a pluggable manner.
The utility model relates to a charging seat, which comprises a shell, a circuit board and a cylindrical terminal, wherein the circuit board is arranged in the shell, the circuit board is provided with at least one metal elastic sheet, and a conductive part of the cylindrical terminal is electrically connected to the metal elastic sheet.
In a preferred embodiment, the conductive part is a conductive sheet formed by extending at the rear end of the terminal base, and the free end of the conductive sheet is folded outwards at the end position, so that the second plate is positioned on the end face of one side of the conductive sheet away from the terminal base and is electrically connected to the metal spring sheet.
In a preferred embodiment, the free end of the conductive sheet is bent to form a plate-shaped structure perpendicular to the axis of the cylindrical terminal, the positioning portion is injection molded on the outer side of the conductive sheet, and the central axes of the plate-shaped structure, the positioning portion and the terminal base body are coincident.
Compared with the prior art, the utility model has the beneficial effects that: the cylindrical terminal is formed by stamping and rolling the composite plate, and the positioning part is injection molded on the outer side of the conductive part and/or the terminal matrix, so that the production can be carried out by adopting a stamping and injection molding mode, compared with the existing machining mode, the precision is higher, the cost is lower, and the production efficiency of the terminal can be obviously improved;
meanwhile, the composite board comprises the first board and the second board positioned at the inner side of the first board, the hardness of the first board is larger than that of the second board, and the resistivity of the second board is not larger than that of the first board.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.
Fig. 1 is a schematic view of a conventional barrel terminal;
fig. 2 is a schematic structural view of a barrel terminal according to the present utility model;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of the barrel terminal shown in FIG. 2 without injection molding the positioning portion;
FIG. 5 is a schematic structural diagram of a conductive structure according to the present utility model;
fig. 6 is a schematic diagram of an internal structure of the charging stand according to the present utility model.
The figures are marked as follows:
1. a cylindrical terminal; 2. a butt-plug terminal; 3. a circuit board; 4. a metal spring plate;
10. a conductive portion; 101. a conductive sheet; 102. a plate-like structure; 103. folding edges;
20. a terminal base;
30. a plug-in part; 301. an elastic arm; 302. a clamping cavity;
40. a positioning part; 401. sealing grooves; 402. a positioning groove;
50. a composite board; 501. a first sheet material; 502. and a second plate.
Detailed Description
Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
As shown in fig. 2-4, the tubular terminal comprises a conductive part 10, a tubular terminal base body 20 and a plug-in part 30 positioned at the front end of the terminal base body 20, wherein the conductive part 10 and/or the outer side of the terminal base body 20 are/is provided with a positioning part 40 for fixing the tubular terminal 1, the conductive part 10, the terminal base body 20 and the plug-in part 30 are formed by punching and rolling a composite plate 50, and the positioning part 40 is injection-molded on the outer side of the conductive part 10 and/or the terminal base body 20; therefore, the cylindrical terminal 1 can be produced by adopting a stamping and injection molding mode, compared with the existing machining mode, the precision is higher, the cost is lower, and the production efficiency of the terminal can be obviously improved.
As shown in fig. 4, the composite board 50 includes a first board 501 and a second board 502 located inside the first board 501, the first board 501 has a hardness greater than that of the second board 502, and the second board 502 has a resistivity not greater than that of the first board 501. Because the first plate 501 with higher hardness is arranged on the outer side of the second plate 502, when the opposite terminal 2 is plugged, the first plate 501 can provide a certain holding force for the second plate 502 positioned on the inner side of the first plate 501, so that the cylindrical terminal 1 is prevented from being deformed after repeated plugging and unplugging, and the service life of the cylindrical terminal can be remarkably prolonged.
In one embodiment, the skeleton of the barrel terminal 1 is mainly composed of the first plate 501, the second plate 502 is compounded on the inner side of the first plate 501, and the second plate 502 is compounded on at least the first plate 501 in the region corresponding to the conductive portion 10 and the plug portion 30 in view of the conductive performance of the barrel terminal 1.
In another embodiment, the skeleton of the cylindrical terminal 1 is mainly composed of the second plate 501, the first plate 501 is coated on the outer side of the second plate 502, and the region of the cylindrical terminal 1, which is easy to deform after repeated pulling and inserting, is the inserting portion 30, so that the first plate 501 is coated on at least the region of the second plate 502 corresponding to the inserting portion 30.
In another embodiment, the frame of the cylindrical terminal 1 is composed of the first plate 501 and the second plate 502 with the same area, and compared with other embodiments, the processing mode is simpler, and the electrical conductivity is better, therefore, the embodiment is preferably adopted in the present utility model, and particularly please refer to fig. 4.
The second plate 502 and the first plate 501 are composited together through cold rolling, and compared with modes of welding, rivet riveting and the like, the connecting mode is stable in structure and not easy to separate during subsequent stamping, so that the stamped cylindrical terminal 1 has good structural stability, the cylindrical terminal 1 is prevented from being deformed after repeated pulling and inserting, and the service life of the cylindrical terminal can be remarkably prolonged.
In view of the conductivity and cost of the barrel terminal 1, the material of the first plate 501 is steel or stainless steel, preferably stainless steel; the second plate 502 is made of copper or copper alloy, preferably phosphor bronze, and the test is performed on the barrel terminal 1 produced by the present utility model using phosphor bronze and stainless steel as examples, and the test shows that:
(1) The service life (number of pluggable) of the cylindrical terminal 1 increases with the increasing thickness ratio of the first plate 501, but when the thickness ratio of the first plate 501 is relatively large, the difficulty of the composite plate 50 in punching is relatively large, which is not beneficial to the production of the cylindrical terminal 1;
(2) The conductivity of the cylindrical terminal 1 decreases as the thickness ratio of the first plate 501 increases, so a critical area is selected at the junction of the two curves, and the ratio of the thickness of the first plate 501 to the thickness of the composite plate 50 is 1:5-3:5 in the critical area, and at this time, the cylindrical terminal 1 can basically meet the conductivity and has good service life (pluggable times); further experiments have shown that when the ratio of the thickness of the first sheet 501 to the thickness of the composite sheet 50 is 2:5, that is, the ratio of the thickness of phosphor bronze to the thickness of stainless steel is 3:2, the barrel terminal 1 has good conductivity and has a good life (number of pluggable times).
In one embodiment, as shown in fig. 3, the plugging portion 30 is at least two elastic arms 301 formed at the front end of the terminal base 20 and extending in the axial direction, the inner sides of the at least two elastic arms 301 form a holding cavity 302 for accommodating the opposite plug terminal 2, the elastic arms 301 are bent inward to form contact portions (not shown in the drawing) capable of electrically connecting with the opposite plug terminal 2, and after the opposite plug terminal 2 is inserted into the holding cavity 302, stable electrical connection is achieved between the contact portions and the elastic arms 301.
The conductive part 10 is a conductive sheet 101 formed by extending at the rear end of the terminal base 20, the conductive sheet 101 is in a strip shape, the free end of the conductive sheet 101 is folded outwards at the end position, so that the second plate 502 is positioned on the end face of one side of the conductive sheet 101 far away from the terminal base 20, and the second plate 502 which is folded outwards on the conductive sheet 101 is used for being electrically connected with a charging seat, thereby realizing better conductive performance.
Further, as shown in fig. 3 and 4, the free end of the conductive sheet 101 is bent to form a plate-like structure 102 perpendicular to the axis of the cylindrical terminal 1, the positioning portion 40 is injection molded on the outer side of the conductive sheet 101, and the central axes of the plate-like structure 102, the positioning portion 40 and the terminal base 20 are coincident; in order to make the connection between the conductive sheet 101 and the positioning portion 40 stable after injection molding, prevent the positioning portion 40 from falling off when receiving a large external force, at least one folded edge 103 bent towards the direction of the terminal base 20 and embedded into the positioning portion 40 is arranged on the plate-shaped structure 102, after injection molding, the folded edge 103 is embedded into the positioning portion 40, and all the conductive sheet 101 except the second plate 502 leaked from the plate-shaped structure 102 is covered by the positioning portion 40, so that the conductive sheet 101 has good stability when electrically connected with the charging seat, and the weight of the sheet-shaped conductive sheet 101 can be obviously reduced compared with the cylindrical conductive portion adopted by the conventional cylindrical terminal in fig. 1, thereby being beneficial to reducing the manufacturing cost of the terminal.
In one embodiment, as shown in fig. 3, the positioning portion 40 is provided with at least one sealing groove 401 for installing a sealing ring and at least one positioning groove 402 for installing the positioning portion 40, and when the cylindrical terminal 1 is installed on the charging stand, the positioning groove 402 is installed on the housing of the charging stand, and sealing connection with the housing is achieved through the sealing ring sleeved outside the sealing groove 401.
As shown in fig. 5 and 2, a conductive structure of the present utility model includes the above-mentioned cylindrical terminal 1 and the opposite terminal 2 mated with the cylindrical terminal 1, and the opposite terminal 2 is connected to the plugging portion 30 of the cylindrical terminal 1 in a pluggable manner.
As shown in fig. 6, a charging stand of the present utility model includes a housing (not shown), a circuit board 3 mounted in the housing, and the above-mentioned cylindrical terminal 1, wherein at least one metal spring 4 is disposed on the circuit board 3, and a conductive portion 10 of the cylindrical terminal 1 is electrically connected to the metal spring 4. As shown in fig. 3 and 4, the conductive portion 10 is a conductive sheet 101 formed by extending at the rear end of the terminal base 20, the conductive sheet 101 is in a strip shape, and the free end of the conductive sheet 101 is folded outwards at the end position, so that the second plate 502 is located on the end surface of one side of the conductive sheet 101 away from the terminal base 20, and the second plate 502 turned outwards on the conductive sheet 101 is used for being electrically connected with a charging seat, thereby realizing better conductive performance. Further, after the free end of the conductive sheet 101 is bent, a plate-shaped structure 102 perpendicular to the axis of the cylindrical terminal 1 is formed, the positioning portion 40 is injection molded on the outer side of the conductive sheet 101, and the central axes of the plate-shaped structure 102, the positioning portion 40 and the terminal base 20 are overlapped; in order to make the conductive sheet 101 stably connected with the positioning portion 40 after injection molding, prevent the positioning portion 40 from falling off when receiving a large external force, the plate-shaped structure 102 is provided with at least one folded edge 103 which is bent towards the direction of the terminal base 20 and is embedded into the positioning portion 40, after injection molding, the folded edge 103 is embedded into the positioning portion 40, and all of the conductive sheet 101 except the plate-shaped structure 102 is covered by the positioning portion 40, so that the conductive sheet 101 has good stability when electrically connected with the charging stand, and the weight of the sheet-shaped conductive sheet 101 can be obviously reduced compared with the cylindrical conductive portion adopted by the conventional cylindrical terminal in fig. 1, thereby being beneficial to reducing the manufacturing cost of the terminal.
While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.
Claims (15)
1. The utility model provides a tubular terminal, includes the conductive part that sets gradually along the axial of tubular terminal, is tubular terminal base member and is located the grafting portion of terminal base member front end, and the outside of conductive part and/or terminal base member is provided with the location portion that is used for fixing tubular terminal, its characterized in that: the conductive part, the terminal matrix and the plug-in part are formed by stamping and rolling composite plates, and the positioning part is injection molded on the outer side of the conductive part and/or the terminal matrix;
the composite board comprises a first board and a second board positioned on the inner side of the first board, wherein the hardness of the first board is larger than that of the second board, and the resistivity of the second board is not larger than that of the first board.
2. A barrel terminal according to claim 1, wherein: the second plate is compounded on the inner side of the first plate and at least compounded on the first plate in the area corresponding to the conducting part and the inserting part.
3. A barrel terminal according to claim 1, wherein: the first plate is coated on the outer side of the second plate, and at least coated on the second plate in the area corresponding to the plug-in connection part.
4. A barrel terminal according to claim 1, wherein: the second sheet material and the first sheet material are compounded together through cold rolling.
5. A barrel terminal according to claim 1, wherein: the thickness ratio of the first plate to the composite plate is 1:5-3:5.
6. A barrel terminal according to claim 1, wherein: the first plate is made of steel or stainless steel; the second plate is made of copper or copper alloy.
7. A barrel terminal according to claim 1, wherein: the plug-in part is at least two elastic arms formed at the front end of the terminal base body in an extending way along the axial direction, and clamping cavities for accommodating opposite plug-in terminals are formed at the inner sides of the at least two elastic arms.
8. A barrel terminal according to claim 1, wherein: the conductive part is a conductive sheet formed by extending at the rear end of the terminal base body, and the free end of the conductive sheet is folded outwards at the end part position, so that the second plate is positioned on the end face of one side of the conductive sheet far away from the terminal base body.
9. The barrel terminal of claim 8, wherein: the free end of the conductive sheet is bent to form a plate-shaped structure perpendicular to the axis of the cylindrical terminal, the positioning part is injection molded on the outer side of the conductive sheet, and the central axes of the plate-shaped structure, the positioning part and the terminal base body coincide.
10. The barrel terminal of claim 9, wherein: the plate-shaped structure is provided with at least one folded edge which is bent towards the direction of the terminal matrix and is embedded into the positioning part.
11. A barrel terminal according to claim 1, wherein: the positioning part is provided with at least one sealing groove for installing the sealing ring and at least one positioning groove for installing the positioning part in the radial direction.
12. An electrically conductive structure, characterized in that: comprising the barrel terminal according to any one of claims 1 to 11 and an opposite terminal mated with the barrel terminal, an insertion portion of the opposite terminal being connected to the barrel terminal in an insertable manner.
13. A charging stand, characterized in that: a circuit board mounted in the housing, the circuit board being provided with at least one metal spring, and the cylindrical terminal as claimed in any one of claims 1 to 11, the conductive portion of the cylindrical terminal being electrically connected to the metal spring.
14. A charging stand according to claim 13, wherein: the conductive part is a conductive sheet formed by extending at the rear end of the terminal base body, and the free end of the conductive sheet is folded outwards at the end part position, so that the second plate is positioned on one side end surface of the conductive sheet far away from the terminal base body and is electrically connected to the metal elastic sheet.
15. A charging stand according to claim 14, wherein: the free end of the conductive sheet is bent to form a plate-shaped structure perpendicular to the axis of the cylindrical terminal, the positioning part is injection molded on the outer side of the conductive sheet, and the central axes of the plate-shaped structure, the positioning part and the terminal base body coincide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320618783.4U CN219498243U (en) | 2023-03-27 | 2023-03-27 | Cylindrical terminal, conductive structure and charging seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320618783.4U CN219498243U (en) | 2023-03-27 | 2023-03-27 | Cylindrical terminal, conductive structure and charging seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219498243U true CN219498243U (en) | 2023-08-08 |
Family
ID=87477402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320618783.4U Active CN219498243U (en) | 2023-03-27 | 2023-03-27 | Cylindrical terminal, conductive structure and charging seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219498243U (en) |
-
2023
- 2023-03-27 CN CN202320618783.4U patent/CN219498243U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205355339U (en) | Positive reverse plug USB socket | |
| US5135417A (en) | Dual usage electrical/electronic pin terminal system | |
| CN217215186U (en) | Terminal with protection function | |
| CN219498243U (en) | Cylindrical terminal, conductive structure and charging seat | |
| CN106992376B (en) | High-current stamping forming terminal capable of being plugged in multiple directions and processing technology thereof | |
| CN218997122U (en) | Terminal for connecting a plurality of terminals | |
| CN218569285U (en) | Integrative stamped cylindrical terminal | |
| CN217215206U (en) | Multilayer shrapnel staggered and distributed jack structure and connector | |
| CN212934914U (en) | Rifle stamping terminal charges | |
| CN108767533B (en) | Automobile charging seat and automobile | |
| CN207967405U (en) | Curve spring electric connector female seat | |
| CN218513716U (en) | Conductive terminal suitable for being assembled on printed circuit board and corresponding printed circuit board assembly | |
| CN220652390U (en) | Coiled welding female terminal | |
| CN218070267U (en) | Electric connection terminal | |
| CN219843222U (en) | Compressor, air conditioner and vehicle with same | |
| CN210245808U (en) | HSD integral type connector | |
| CN220155789U (en) | High-current electric connector | |
| CN220856986U (en) | Connector and electronic device | |
| CN110048261B (en) | Jack electric contact assembly and electric connector | |
| CN219643161U (en) | Plug-in component, compressor, air conditioner and vehicle with same | |
| CN214672878U (en) | Battery with a battery cell | |
| CN219350744U (en) | Wire spring terminal convenient to dismouting | |
| CN220605018U (en) | High-current jack of tin ring thermosetting crown spring | |
| CN218415121U (en) | Electric connector with metal shell | |
| CN220368184U (en) | Assembling and fixing structure of contact pin and insulating plate and charging and discharging connecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |