CN208674526U - Connector and connector assembly with polygon error-proof structure - Google Patents
Connector and connector assembly with polygon error-proof structure Download PDFInfo
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- CN208674526U CN208674526U CN201821454481.3U CN201821454481U CN208674526U CN 208674526 U CN208674526 U CN 208674526U CN 201821454481 U CN201821454481 U CN 201821454481U CN 208674526 U CN208674526 U CN 208674526U
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- fool proof
- mounting hole
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Abstract
The utility model provides a kind of connector and connector assembly with polygon error-proof structure, connector assembly includes mutually matched two connectors, connector is provided with fool proof mounting hole and fool proof part by the opening at inserting end, the inner circumferential profile of fool proof mounting hole is positive the side n shape and has n the first wall surfaces being uniformly arranged in the circumferential, the outside of fool proof part has n/2 the first wall surfaces, after fool proof part is installed to fool proof mounting hole, each first wall surface is parallel to each other with the second wall surface on corresponding circumferential position, and in fool proof installation position on the symmetrical position of fool proof part formed a dumb-proof inserting position.When two connectors cooperate, the fool proof part of two connectors and dumb-proof inserting position mutually insert cooperation and realize fool proof, and fool proof part is detachable, easy to install, and fool proof part and being applied in combination for fool proof mounting hole are flexible.
Description
Technical field
The utility model relates to electric connector fields, and in particular to a kind of connector and company with polygon error-proof structure
Connect device assembly.
Background technique
Connector is common a kind of component in electrical engineering, its effect be connect circuit on distinct device or
Module different in circuit is connected, electric current or signal is enable to circulate or transmit, circuit is made to realize scheduled function.It is existing
Connector includes a public connector and a female connectors, and connection type is inserted into female connect generally by public connector
It connects in device, the electric connection terminal electrical connection in the electric connection terminal and female connectors in public connector.
Directly inerrably complete the connection of correct connector to realize and entirely prevent incorrect link occur, public connector and
Corresponding fool proof public affairs panel and fool proof parent panel can be provided on female connectors, if the pairing of connector mistake or connector direction are not
Right, fool proof public affairs panel and fool proof parent panel cannot be fully mated, and user then can be from perceptually judging wiring error.
Error-proof structure on existing connector the problem is that, the raised or sunken position on fool proof panel is fixed,
And fool proof panel need to be fixedly mounted in connector installation, fool proof panel dismounting and change is more difficult, if connector need to be with the
When three connector cooperations, then needs to dismantle fool proof panel, otherwise can not dock.Existing error-proof structure using flexible is poor,
Usage mode limitation.
Utility model content
The first of the utility model is designed to provide a kind of connector with polygon error-proof structure of using flexible.
The second of the utility model is designed to provide a kind of connector assembly of using flexible.
The connector with polygon error-proof structure of the offer of the first mesh of the utility model includes connector shell, connection
Opening is arranged in the front end of cartridge insertion direction in device shell；Connector shell is equipped with fool proof mounting hole, fool proof mounting hole in opening side
Extending direction it is identical as cartridge insertion direction, the hole profile of fool proof mounting hole is positive the side n shape, and the hole wall of fool proof mounting hole includes along week
To the n being evenly arranged first wall surfaces, n is even number；Connector further includes fool proof part, and the outside of fool proof part has n/2 second
Wall surface；Fool proof part is removably installed in fool proof mounting hole, one first with corresponding circumferential position of each second wall surface
Wall surface is parallel to each other, and dumb-proof inserting position is formed in fool proof mounting hole, on the axis projection of fool proof mounting hole, fool proof part and anti-
Slow-witted inserting position is symmetrical arranged in fool proof mounting hole.
By above scheme as it can be seen that engaging or being threadably secured to polygon after the installation for completing connector, then by fool proof part
Fool proof mounting hole in, if fool proof part damage or connector need with third connector cooperate, fool proof part disassembly more
It changes simple；On the mountable different a variety of circumferential positions in fool proof mounting hole of fool proof part, multiple fool proof parts and anti-on connector
Slow-witted mounting hole cooperation then constitutes a variety of fool proofs combinations, user can voluntarily matched combined according to actual needs, error-proof structure
Using more flexible.
Further embodiment is that fool proof part includes pedestal and the fool proof auxiliary section from pedestal lobe, and the setting of the second wall surface exists
On fool proof auxiliary section, on the axis projection of fool proof mounting hole, fool proof auxiliary section is right in fool proof mounting hole with dumb-proof inserting position
Claim setting；The circumferential profile of pedestal is positive the side n shape, and the outer peripheral surface of pedestal and the hole wall of fool proof mounting hole cooperate.
Therefore pedestal and fool proof installation wall surface of the hole cooperation, the setting of pedestal are more convenient for the location and installation of fool proof part.
Further embodiment is the diagonally arranged front end in connector shell of two fool proof mounting holes.
Therefore the if error-proof structure only part when opposite side on length direction or width direction is distributed, in connector
Contact pin can still be inserted into another connector and complete to be electrically connected, thus cause abnormal connection, the error-proof structure being diagonally arranged
The problem can be effectively avoided to occur.
Further embodiment is that n is greater than or equal to 6.
Therefore position set-up mode of the fool proof part in fool proof mounting hole is n kind, the numerical value of n is bigger, fool proof part group
The fool proof combination of synthesis is then more, to adapt to the mutual fool proof between multiple groups connector assembly.
Further embodiment is that screw hole is arranged in the bottom centre of fool proof mounting hole, and bolt passes through pedestal and screw hole cooperates.
Therefore the fixed mounting stability for being able to maintain fool proof part of bolt, and fool proof inner wall of the hole installing is not influenced just
It is often used.
Further embodiment is that escape groove is provided on fool proof auxiliary section, and escape groove is connected to screw hole.
The second of the utility model is designed to provide a kind of connector assembly of using flexible, and connector assembly includes phase
The first connector and the second connector that interfix assembly is closed, the first connector include the first connector shell and the first fool proof part；
First connector shell is set in the first opening of the front end of the first cartridge insertion direction setting, the first connector shell in the first opening side
There is the first fool proof mounting hole, the extending direction of the first fool proof mounting hole is identical as the first cartridge insertion direction, the first fool proof mounting hole
Hole profile is positive the side n shape, and the hole wall of the first fool proof mounting hole includes n the first wall surfaces being circumferentially evenly arranged, and n is even number；
The outside of first fool proof part has n/2 the second wall surfaces, and the first fool proof part is removably installed in the first fool proof mounting hole, often
A second wall surface is parallel to each other with first wall surface of corresponding circumferential position, and it is anti-that first is formed in the first fool proof mounting hole
Slow-witted inserting position, on the axis projection of the first fool proof mounting hole, the first fool proof part and the first dumb-proof inserting position are pacified in the first fool proof
It fills in hole and is symmetrical arranged；Second connector includes the second connector shell and the second fool proof part, and the second connector shell is second
The second opening of front end setting of cartridge insertion direction, the second connector shell are equipped with the second fool proof mounting hole in the second opening side, the
The extending direction of two fool proof mounting holes is identical as the second cartridge insertion direction, and the hole profile of the second fool proof mounting hole is positive the side n shape, and second
The hole wall of fool proof mounting hole includes n third wall surface being circumferentially evenly arranged；The outside of second fool proof part has n/2 the 4th
Wall surface, the second fool proof part are removably installed in the second fool proof mounting hole, each 4th wall surface with corresponding circumferential position
One third wall surface is parallel to each other, and the second dumb-proof inserting position is formed in the second fool proof mounting hole, in the second fool proof mounting hole
On axis projection, the second fool proof part and the second dumb-proof inserting position are symmetrical arranged in the second fool proof mounting hole；First opening and the
Two open butt joints, the first fool proof mounting hole are docked with the second fool proof mounting hole, and the first fool proof part is inserted into the second dumb-proof inserting position, the
Two fool proof parts are inserted into the first dumb-proof inserting position.
By above scheme as it can be seen that the first fool proof part is inserted into the second dumb-proof inserting position, the second fool proof part is inserted into the first fool proof and inserts
It fills position and realizes normal connection, if one of fool proof part is on the circumferential position and another connector in fool proof mounting hole
When the circumferential position of dumb-proof inserting position is different, then send interference between the fool proof part of two connectors, thus realize fool proof without
Method normally connects.Position set-up mode of the fool proof part in fool proof mounting hole is a variety of, and the disassembly replacement of fool proof part is simple, user
Can voluntarily matched combined according to actual needs, error-proof structure using more flexible.
Further embodiment is that the first fool proof part includes first base and the first fool proof auxiliary section, and the setting of the second wall surface exists
On first fool proof auxiliary section, on the axis projection of the first fool proof mounting hole, the first fool proof auxiliary section and the first dumb-proof inserting position
It is symmetrical arranged in the first fool proof mounting hole, the circumferential profile of first base is positive the side n shape, the outer peripheral surface of first base and first
The hole wall of fool proof mounting hole cooperates；Second fool proof part includes second base and the second fool proof auxiliary section, and the setting of the 4th wall surface is the
On two fool proof auxiliary sections, on the axis projection of the second fool proof mounting hole, the second fool proof auxiliary section and the second dumb-proof inserting position exist
It is symmetrical arranged in second fool proof mounting hole, the circumferential profile of second base is positive the side n shape, and the outer peripheral surface of second base is prevented with second
The hole wall cooperation of slow-witted mounting hole.
Further embodiment is two diagonally arranged front ends in the first connector shell of the first fool proof mounting hole；Two
The diagonally arranged front end in the second connector shell of second fool proof mounting hole.
Further embodiment is that the first screw hole is arranged in the bottom centre of the first fool proof mounting hole, and the first bolt passes through first
Pedestal and the first screw hole cooperate；The second screw hole is arranged in the bottom centre of second fool proof mounting hole, and the second bolt passes through second base
Cooperate with the second screw hole.
Detailed description of the invention
Fig. 1 is the structure chart of the utility model connector assembly embodiment.
Fig. 2 is the structural exploded view of the first connector in the utility model connector assembly embodiment.
Fig. 3 is the enlarged drawing in Fig. 2 at A.
Fig. 4 is the structure chart of fool proof part and fool proof mounting hole in the utility model connector assembly embodiment.
Fig. 5 is the structure chart of the first mated condition of the utility model connector assembly embodiment.
Fig. 6 is the structure chart of the second mated condition of the utility model connector assembly embodiment.
The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.
Specific embodiment
It is the structure chart of the utility model connector assembly embodiment referring to Fig. 1, Fig. 1.Connector assembly includes phase interfix
The first connector 1 and the second connector 2 closed is assembled, the first connector 1 and the second connector 2 are provided by the utility model
Connector with polygon error-proof structure.First connector 1 includes the first connector shell 10 and the first fool proof part 3；First
Connector shell 1 is in the first opening 100 of the front end of the first cartridge insertion direction setting, and the first connector shell 10 is in the first opening 100
The end face 101 of side be equipped with two diagonally arranged screw holes 102 and two diagonally arranged the first fool proof mounting holes 11, first
The extending direction of fool proof mounting hole 11 is identical as the first cartridge insertion direction.In the same manner, the second connector 2 includes the second connector shell
20 and the second fool proof part 4, the second connector shell 20 is in the second opening 200 of the front end of the second cartridge insertion direction setting, the second connection
Device shell 20 is fitted with two diagonally arranged bolts 202 on the end face 201 of the second 200 side of opening and is equipped with diagonal
Arrange that two the second fool proof mounting holes 21, the extending direction of the second fool proof mounting hole 21 are identical as the second cartridge insertion direction.
It is the structural exploded view of the first connector in the utility model connector assembly embodiment in conjunction with Fig. 2 and Fig. 3, Fig. 2,
Fig. 3 is the enlarged drawing in Fig. 2 at A.The hole profile of first fool proof mounting hole 11 is regular hexagon, the hole of the first fool proof mounting hole 11
Wall includes 6 the first wall surfaces 112 being circumferentially evenly arranged, and the bottom center of the first fool proof mounting hole 11 is provided with the first screw hole
111.First fool proof part 3 includes first base 31 and the first fool proof auxiliary section 32, and the circumferential profile of first base 31 is positive six sides
Shape, the outer peripheral surface of first base 31 include six pedestal wall surfaces 311 being circumferentially evenly arranged, the middle part setting of first base 31
There is the countersunk head through-hole 310 through 31 thickness direction of first base.First fool proof auxiliary section 32 extends from the top surface of first base 31,
First fool proof auxiliary section 32 is integrally located at the first side of first base 31, and there are three for the outside setting of the first fool proof auxiliary section 32
Two wall surfaces 321, each second wall surface 321 are parallel to each other with a pedestal wall surface 311 on corresponding circumferential position；First fool proof is matched
The middle part in conjunction portion 32 has the escape groove 322 being connected to countersunk head through-hole 310.
It is the structure of fool proof part and fool proof mounting hole in the utility model connector assembly embodiment in conjunction with Fig. 4, Fig. 4
Figure, wherein for convenient for being easy to be illustrated structure hiding first base 31.Bolt 12 sequentially passes through washer 13 and countersunk head through-hole
It is locked at after 310 in first screw hole 111, to realize the installation of the first fool proof part 3, the outer peripheral surface of first base 31 and first is prevented
The hole wall of slow-witted mounting hole 11 limits cooperation, to prevent the first fool proof part 3 from rotating in the first fool proof mounting hole 11.First fool proof
Each second wall surface 321 is parallel to each other with first wall surface 112 of corresponding circumferential position on auxiliary section 32.When the first fool proof
After part 3 is installed to the first fool proof mounting hole 11, between the first fool proof auxiliary section 32 and the opposite side hole wall of the first fool proof mounting hole 11
The first dumb-proof inserting position 114 is formed, on the axis projection of the first fool proof mounting hole 11, the first fool proof auxiliary section 32 and first is anti-
Slow-witted inserting position 114 is symmetrical arranged in the first fool proof mounting hole 11.
Since first base 31 is regular hexagon, accordingly the inner wall of the first fool proof mounting hole 11 is regular hexagon, because
This first fool proof part 3 can have six kinds of different mounting means by circumferentially rotating, under six kinds of different mounting means, first
Fool proof auxiliary section 32 is then located on different circumferential positions.
The structure of second fool proof mounting hole 21 is identical as the structure of the first fool proof mounting hole 11, the first fool proof part 3 and second
The structure of fool proof part 4 is identical.The hole profile of second fool proof mounting hole 11 is regular hexagon, the hole wall packet of the second fool proof mounting hole 11
Include 6 third wall surfaces being circumferentially evenly arranged；The outside of second fool proof part 4 has 3 the 4th wall surfaces, the second fool proof mounting hole
The countersunk head through-hole of 21 bottom centre's the second screw hole of setting, the second screw bolt passes washer and second base is matched with the second screw hole
It closes.After second fool proof part 4 is installed to the second fool proof mounting hole 21, each 4th wall surface with a third of corresponding circumferential position
Wall surface is parallel to each other, and the second dumb-proof inserting position is formed in the second fool proof mounting hole 21, in the axial direction of the second fool proof mounting hole 21
In projection, the second fool proof part 4 and the second dumb-proof inserting position are symmetrical arranged in the second fool proof mounting hole 21.
In conjunction with Fig. 1 and Fig. 5, Fig. 5 is the structure chart of the correct mated condition of the utility model connector assembly embodiment.First
When connector 1 and the second connector 2 are correctly coupled, 200 docking of the first opening 100 and the second opening, the installation of the first fool proof
Hole 11 is docked with the second fool proof mounting hole 21, and the first fool proof part 3 is inserted into the second dumb-proof inserting position, the second fool proof part 4 insertion first
In dumb-proof inserting position 114.Since the first fool proof mounting hole 11 is regular hexagon, the first fool proof part 3 is integrally located at the first fool proof peace
The side in hole 11 is filled, and second side of the first fool proof mounting hole 11 forms the first dumb-proof inserting position 114, due to the second fool proof part 4
Circumferential installation site it is correct and match with the circumferential position of the first dumb-proof inserting position 114, therefore the first fool proof part 3 and second is prevented
Interference is not sent between slow-witted part 4, is inserted between the first connector 1 and the second connector 2 normal.
It is the structure chart of the utility model connector assembly embodiment mistake mated condition referring to Fig. 6, Fig. 6.First connection
When device 1 and the second connector 2 are correctly coupled, due to the second fool proof part 4 with the first dumb-proof inserting position 114 not at identical
Circumferential position on, i.e. the installation of the second fool proof part 4 and 114 Incomplete matching of the first dumb-proof inserting position, the first fool proof part 3 at this time
Interference is then generated between the second fool proof part 4 and prevents the connection between connector, realizes fool proof.
Finally it is emphasized that the above is only the preferred embodiment of the present invention, it is not limited to this reality
With novel, for those skilled in the art, the utility model can have various change and change, such as fool proof mounting hole
Inner surface contour may be arranged as 8 in shape or 10 shape, as long as the inner surface contour for meeting fool proof mounting hole is the side n shape, n is even
Number, the rule that the quantity of fool proof part upper wall surface is n/2.Within the spirit and principle of the utility model, it is done
Any modification, equivalent substitution, improvement and etc. should be included within the scope of protection of this utility model.
Claims (10)
1. the connector with polygon error-proof structure, including connector shell, the connector shell is before cartridge insertion direction
End setting opening；
It is characterized by:
The connector shell the opening side be equipped with fool proof mounting hole, the extending direction of the fool proof mounting hole with it is described
Cartridge insertion direction is identical, and the hole profile of the fool proof mounting hole is positive the side n shape, and the hole wall of the fool proof mounting hole includes circumferentially
N the first wall surfaces of even arrangement, n is even number；
The connector further includes fool proof part, and the outside of the fool proof part has n/2 the second wall surfaces；
The fool proof part is removably installed in the fool proof mounting hole, each second wall surface with corresponding circumferential position
First wall surface be parallel to each other, and in the fool proof mounting hole formed dumb-proof inserting position, in the fool proof mounting hole
Axis projection on, the fool proof part and the dumb-proof inserting position are symmetrical arranged in the fool proof mounting hole.
2. connector according to claim 1, it is characterised in that:
The fool proof part includes pedestal and the fool proof auxiliary section from the pedestal lobe, and second wall surface is arranged in the fool proof
On auxiliary section, on the axis projection of the fool proof mounting hole, the fool proof auxiliary section and the dumb-proof inserting position are described anti-
It is symmetrical arranged in slow-witted mounting hole；
The circumferential profile of the pedestal is positive the side n shape, and the outer peripheral surface of the pedestal and the hole wall of the fool proof mounting hole are matched
It closes.
3. connector according to claim 2, it is characterised in that:
Two diagonally arranged front ends in the connector shell of fool proof mounting hole.
4. connector according to claim 3, it is characterised in that:
N is greater than or equal to 6.
5. according to the described in any item connectors of claim 2 to 4, it is characterised in that:
Screw hole is arranged in the bottom centre of the fool proof mounting hole, and bolt passes through the pedestal and the screw hole cooperates.
6. connector according to claim 5, it is characterised in that:
Escape groove is provided on the fool proof auxiliary section, the escape groove is connected to the screw hole.
7. connector assembly, the first connector and the second connector including mutually inserting cooperation, it is characterised in that:
First connector includes the first connector shell and the first fool proof part；
First connector shell is in the first opening of the front end of the first cartridge insertion direction setting, and first connector shell is in institute
The first opening side is stated equipped with the first fool proof mounting hole, the extending direction of the first fool proof mounting hole and the first inserting side
To identical, the hole profile of the first fool proof mounting hole is positive the side n shape, and the hole wall of the first fool proof mounting hole includes circumferentially
N the first wall surfaces being evenly arranged, n is even number；
The outside of the first fool proof part has n/2 the second wall surfaces, and the first fool proof part is removably installed in described the
In one fool proof mounting hole, each second wall surface is parallel to each other with first wall surface of corresponding circumferential position, and
The first dumb-proof inserting position is formed in the first fool proof mounting hole, it is described on the axis projection of the first fool proof mounting hole
First fool proof part and first dumb-proof inserting position are symmetrical arranged in the first fool proof mounting hole；
Second connector includes the second connector shell and the second fool proof part；
Second connector shell is in the second opening of the front end of the second cartridge insertion direction setting, and second connector shell is in institute
The second opening side is stated equipped with the second fool proof mounting hole, the extending direction of the second fool proof mounting hole and the second inserting side
To identical, the hole profile of the second fool proof mounting hole is positive the side n shape, and the hole wall of the second fool proof mounting hole includes circumferentially
N third wall surface being evenly arranged；
The outside of the second fool proof part has n/2 the 4th wall surfaces, and the second fool proof part is removably installed in described the
In two fool proof mounting holes, each 4th wall surface is parallel to each other with a third wall surface of corresponding circumferential position, and
The second dumb-proof inserting position is formed in the second fool proof mounting hole, it is described on the axis projection of the second fool proof mounting hole
Second fool proof part and second dumb-proof inserting position are symmetrical arranged in the second fool proof mounting hole；
First opening and second open butt joint, the first fool proof mounting hole and the second fool proof mounting hole pair
It connects, the first fool proof part is inserted into second dumb-proof inserting position, and the second fool proof part is inserted into first dumb-proof inserting position.
8. connector assembly according to claim 7, it is characterised in that:
The first fool proof part includes first base and from the first fool proof auxiliary section of the first base protrusion, second wall
Face is arranged on first fool proof auxiliary section, and on the axis projection of the first fool proof mounting hole, first fool proof is matched
Conjunction portion and first dumb-proof inserting position are symmetrical arranged in the first fool proof mounting hole, the circumferential profile of the first base
Be positive the side n shape, and the hole wall of the outer peripheral surface of the first base and the first fool proof mounting hole cooperates；
The second fool proof part includes second base and from the second fool proof auxiliary section of the second base protrusion, the 4th wall
Face is arranged on second fool proof auxiliary section, and on the axis projection of the second fool proof mounting hole, second fool proof is matched
Conjunction portion and second dumb-proof inserting position are symmetrical arranged in the second fool proof mounting hole, the circumferential profile of the second base
Be positive the side n shape, and the hole wall of the outer peripheral surface of the second base and the second fool proof mounting hole cooperates.
9. connector assembly according to claim 8, it is characterised in that:
The diagonally arranged front end in first connector shell of two the first fool proof mounting holes；
The diagonally arranged front end in second connector shell of two the second fool proof mounting holes.
10. connector assembly according to claim 8 or claim 9, it is characterised in that:
The bottom centre of the first fool proof mounting hole is arranged the first screw hole, and the first bolt passes through the first base and described the
The cooperation of one screw hole；
The bottom centre of the second fool proof mounting hole is arranged the second screw hole, and the second bolt passes through the second base and described the
The cooperation of two screw holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821454481.3U CN208674526U (en) | 2018-09-05 | 2018-09-05 | Connector and connector assembly with polygon error-proof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821454481.3U CN208674526U (en) | 2018-09-05 | 2018-09-05 | Connector and connector assembly with polygon error-proof structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208674526U true CN208674526U (en) | 2019-03-29 |
Family
ID=65842234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821454481.3U Active CN208674526U (en) | 2018-09-05 | 2018-09-05 | Connector and connector assembly with polygon error-proof structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208674526U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695009A (en) * | 2019-11-04 | 2020-01-17 | 广州市泰立机电设备有限公司 | Prevent slow-witted structure, dust-binding fiber container and prevent slow-witted device of change dust-binding fiber container |
| CN112804848A (en) * | 2019-10-28 | 2021-05-14 | 台达电子工业股份有限公司 | Electronic device and machine table matched with same |
-
2018
- 2018-09-05 CN CN201821454481.3U patent/CN208674526U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112804848A (en) * | 2019-10-28 | 2021-05-14 | 台达电子工业股份有限公司 | Electronic device and machine table matched with same |
| US11469551B2 (en) | 2019-10-28 | 2022-10-11 | Delta Electronics, Inc. | Electronic device and power distribution apparatus used therewith |
| US11936138B2 (en) | 2019-10-28 | 2024-03-19 | Delta Electronics, Inc. | Electronic device and power distribution apparatus used therewith |
| CN110695009A (en) * | 2019-11-04 | 2020-01-17 | 广州市泰立机电设备有限公司 | Prevent slow-witted structure, dust-binding fiber container and prevent slow-witted device of change dust-binding fiber container |
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