CN116995453A - Conductive terminal for connecting wires - Google Patents

Conductive terminal for connecting wires Download PDF

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Publication number
CN116995453A
CN116995453A CN202210448255.9A CN202210448255A CN116995453A CN 116995453 A CN116995453 A CN 116995453A CN 202210448255 A CN202210448255 A CN 202210448255A CN 116995453 A CN116995453 A CN 116995453A
Authority
CN
China
Prior art keywords
conductive terminal
terminal
arm
wire
connection portion
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
Application number
CN202210448255.9A
Other languages
Chinese (zh)
Inventor
黄永建
丁通豹
R·I·马滕斯
B·舒尔茨
R·D·德希穆克
S·巴尔加瓦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tailian Solutions Co ltd
Tyco Electronics Shanghai Co Ltd
Original Assignee
Tailian Solutions Co ltd
Tyco Electronics Shanghai Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tailian Solutions Co ltd, Tyco Electronics Shanghai Co Ltd filed Critical Tailian Solutions Co ltd
Priority to CN202210448255.9A priority Critical patent/CN116995453A/en
Publication of CN116995453A publication Critical patent/CN116995453A/en
Pending legal-status Critical Current

Links

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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Abstract

The invention discloses a conductive terminal for connecting wires, comprising: a first connection portion; a first arm extending from a first end of the first connection portion in a first direction; a second arm including a first portion extending from a second end of the first connection portion in a second direction that is angled from the first direction, wherein the first portion includes: and a wire contact part disposed on the first portion in the second direction and configured to pierce an insulating layer of a wire placed in the terminal frame to form an electrical connection with the wire when the conductive terminal is inserted into one of the terminal frames in a direction opposite to the first direction. When a plurality of the conductive terminals are used for connecting wires in the terminal framework, the distance between the conductive terminals is smaller, and each conductive terminal can be connected with more wires, so that the conductive terminals can meet the requirements of more application scenes.

Description

Conductive terminal for connecting wires
Technical Field
The present invention relates to a conductive terminal for connecting wires, and more particularly, to a conductive terminal capable of connecting a plurality of wires and having a small terminal arrangement pitch.
Background
In the manufacture of miniature motors, it is often necessary to electrically connect a plurality of wires. The term "wire" is used to denote an insulated wire used to make coils or windings in electrical products. The conducting wires are divided into conducting wire cores and electric insulating layers according to basic components, wherein the electric insulating layers wrap the conducting wire cores at the periphery, and the electric insulating layers play a role in electric isolation. For the electric connection of a plurality of wires, the industrial processing field is realized by crimping the plurality of wires by using the conductive terminal, and the electric connection device is characterized by no need of welding and no pollution.
A conductive terminal for effecting crimping of a wire, one end of which serves as a tap for electrical connection, is connected to an external electrical component such as a PCB circuit board, an electrical connector, or the like. In practical applications, it is desirable that the intervals between the terminals after the crimping is completed are smaller, that is, the tap intervals of the conductive terminals are smaller, so that the use of more application scenes can be satisfied.
Fig. 1 shows a perspective view of a conductive terminal as a prior art. As can be seen from fig. 1, the conductive terminal 10 includes a first connection portion 101, a first arm 102, and a second arm 103. Wherein the first arm 102 is formed extending in the first direction from the first end 1011 of the first connection portion 101, the first arm including the terminal contact portion 1021. The second arm 103 may be considered to include a first portion 1031 extending from the second end 1012 of the first connection portion 101 in a second direction that is angled from the first direction. Wherein the first portion 1031 includes a wire contact 1032 for piercing a wire. The wire contact 1032 includes a plurality of sharp raised edges 1033 formed on the first portion in a direction perpendicular to the second direction. Also shown in fig. 1 are a plurality of wires 20 crimped, the plurality of wires 20 extending in a second direction and being arranged in parallel.
In fig. 1, the direction of each raised edge is perpendicular to the second direction. In order to form the raised edges of the wire contact, the prior art uses a scraping process. Scraping means that a scraper is used for scraping trace metal on the surface of a workpiece, and a scraping groove is reserved on the surface of the workpiece. For example, in fig. 1, the row of scraping grooves present on the first portion is the trace left after scraping. Meanwhile, in the process of rapid scraping, fine burrs, namely raised edges in the prior art, are formed at the edges of the scraping grooves.
Fig. 2 shows a schematic view of the conductive terminal of fig. 1 placed within a terminal backbone, where AA' represents the terminal spacing. Referring to fig. 1, the first connection portion 101 of the conductive terminal is located at the bottom of the terminal frame in fig. 2, the terminal contact portion 1021 of the conductive terminal faces upward, and the arrangement direction of the plurality of conductive terminals in fig. 2 can be regarded as the direction in which the protruding edge 1033 extends, i.e., along the direction perpendicular to the second direction. The terminal pitch AA 'in fig. 2 is related to the width BB' of the conductive terminal and also to the number of wires crimped. Similar to the prior art shown in fig. 1 and 2, each conductive terminal is capable of crimping up to 2 wires and the terminal spacing is typically above 6.1 mm.
Disclosure of Invention
The invention provides a conductive terminal for connecting wires. When a plurality of the conductive terminals are used for connecting wires in the terminal framework, the distance between the conductive terminals is smaller, and each conductive terminal can be connected with more wires, so that the conductive terminals can meet the requirements of more application scenes.
Based on this, according to an embodiment of the present invention, there is provided a conductive terminal for connecting wires, including: a first connection portion; a first arm formed extending in a first direction from a first end of the first connection portion; a second arm including a first portion extending from a second end of the first connection portion in a second direction that is angled from the first direction, wherein the first portion includes: and a wire contact portion provided on the first portion in the second direction and configured to pierce an insulating layer of a wire placed in one terminal frame to form an electrical connection with the wire when the conductive terminal is inserted into the terminal frame in a direction opposite to the first direction.
In one embodiment, the second arm further includes a second portion extending in a third direction from an end of the first portion remote from the second end of the first connection.
In one embodiment, the third direction is parallel to the first direction.
In one embodiment, the wire contact includes one or more sharp raised edges formed on the first portion in the second direction.
In one embodiment, the wire contact further comprises one or more strip-shaped through holes formed in the first portion in the second direction, wherein an edge forming the strip-shaped through holes comprises the sharp raised edge.
In one embodiment, the raised edge is formed using a flanging process.
In one embodiment, the conductive terminal further comprises a support portion located between the first arm and the second arm and configured to abut between the first arm and the second arm when the conductive terminal is inserted into the terminal backbone to prevent deformation of the second arm.
In one embodiment, the conductive terminal further includes a terminal contact portion formed extending outwardly from an end of the first arm remote from the first end of the first connection portion and configured to be electrically connected with an external component.
In one embodiment, the conductive terminal further includes a terminal contact portion formed extending outwardly from an end of the second arm remote from the second end of the first connection portion and configured to be electrically connected with an external component.
In one embodiment, the conductive terminal further includes locking portions protruding outward from both sides of the first arm or the second arm and configured to lock the conductive terminal within the terminal frame when the conductive terminal is inserted into the terminal frame.
In one embodiment, the conductive terminal further includes a positioning through hole formed on the first arm and configured to position the conductive terminal when the conductive terminal is processed.
In one embodiment, a conductive terminal for connecting wires includes: a first connection portion; a first arm formed extending in a first direction from a first end of the first connection portion; a second arm comprising a first portion extending from a second end of the first connection portion in a second direction that is angled from the first direction, wherein the first portion has at least one strip-shaped through hole formed in the second direction, wherein an edge forming the strip-shaped through hole comprises the sharp raised edge operable to pierce a wire to form an electrical connection with the wire.
In one embodiment, the raised edge is formed using a flanging process.
In one embodiment, the second arm further comprises a second portion extending from an end of the first portion remote from the second end of the first connection portion in a third direction, wherein the third direction is parallel to the first direction.
Drawings
Other features and advantages of the present invention will be better understood from the following detailed description of the preferred embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a perspective view of a conductive terminal as a related art.
Fig. 2 is a schematic view of the conductive terminals shown in fig. 1 arranged in a terminal frame.
Fig. 3 is a perspective view of a conductive terminal according to an embodiment of the present invention at one viewing angle.
Fig. 4 is a front view of a conductive terminal according to one embodiment of the present invention.
Fig. 5 is a side view of a conductive terminal according to one embodiment of the present invention.
Fig. 6 is a schematic view of a plurality of conductive terminals inserted into a terminal frame according to one embodiment of the present invention.
Fig. 7 is a detailed view of a convex structure of a conductive terminal according to an embodiment of the present invention.
Fig. 8 is a side view of a conductive terminal according to another embodiment of the present invention.
Fig. 9 is a side view of a conductive terminal according to another embodiment of the present invention.
Detailed Description
The making and using of the embodiments are discussed in detail below. It should be understood, however, that the detailed description and the specific examples, while indicating specific ways of making and using the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The expressions such as upper, lower, left, right, etc. used in describing the respective components are not absolute, but relative. When the individual components are arranged as shown in the figures, these expressions are appropriate, but when the positions of the individual components in the figures are changed, these expressions also change accordingly.
Fig. 3 shows a perspective view of a conductive terminal according to an embodiment of the present invention at one viewing angle. Referring to fig. 3, 4 and 5, such a conductive terminal 30 for connecting wires includes a first connection portion 301, a first arm 302 and a second arm 303. Wherein the first arm 302 is formed in a first direction from the first end 3011 of the first connection portion 301. The second arm 303 includes a first portion 3031 extending from the second end 3012 of the first connection portion 301 in a second direction at an angle to the first direction. Wherein the first portion 3031 comprises: a wire contact portion 3032, the wire contact portion 3032 being disposed on the first portion 3031 in the second direction and configured to pierce an insulating layer of a wire placed in one of the terminal frames to form an electrical connection with the wire when the conductive terminal 30 is inserted into the terminal frame in a direction opposite to the first direction.
In this embodiment, the second arm 303 further includes a second portion 3033 formed to extend in a third direction from an end of the first portion 3031 remote from the second end 3012 of the first connection portion 301, wherein the third direction is parallel to the first direction. The wire contact 3032 also includes a plurality of sharp raised edges 3034 formed on the first portion 3031 in the second direction. The conductive terminal according to an embodiment of the present invention may be made of copper material such as brass, copper nickel silicon, phosphor bronze, etc. The wire according to an embodiment of the present invention is a magnet wire (also called a winding wire), which is an insulated wire used to manufacture coils or windings in electrical products, and is generally classified into an enamel wire, a wrapping wire, an enamelled wire, an inorganic insulated wire, and the like.
Fig. 6 shows a schematic view of a plurality of conductive terminals 30 inserted into a terminal backbone 40 according to one embodiment of the present invention. In fig. 6, the plurality of wires 50 are sequentially arranged in the wire pressing grooves of the terminal frame 40, and the arrangement of the plurality of wires 30 is simultaneously arranged in the width and height directions, avoiding a significant increase in the terminal pitch CC' caused by the arrangement only in the width direction. For a conductive terminal crimped wire, the direction in which each raised edge extends must be perpendicular to the direction in which each wire is aligned, which causes the raised edge to puncture the wire in the cross-sectional direction of the wire upon being subjected to a force. For example, for the present example, each raised edge 3034 of conductive terminal 30 extends along a second direction, while the direction of each corresponding wire 50 is perpendicular to the second direction. In other words, the direction in which the protrusions are disposed substantially limits the direction in which the wires are aligned. In the present embodiment, the convex edge 3034 of the wire contact portion 3032 extends along the second direction, corresponding to a position where the arrangement of the wires 50 does not occupy too much in the width direction, which is one of the reasons why the terminal pitch of the conductive terminal is small in the present invention. With the conductive terminal of this embodiment, the minimum terminal pitch is 1.5mm, and at least 4 wires can be connected.
In crimping the wire 50 using the conductive terminal 30, the conductive terminal 30 is pressed down in alignment with the terminal frame groove 40, and the conductive terminal 30 is pressed vertically downward into the terminal frame groove 40. Since the conductive terminal 30 is subjected to a vertically downward pressure, according to the force decomposition, a connection perpendicular to the wire contact portion 3032 and the plurality of wires 50 is generated at the wire contact portion 3032Pressure of the contact surface. In the specific case shown in fig. 6, the pressure is a force F directed to the lower left 1 . The wire contact 3032 is subjected to F 1 Is pressed against the plurality of wires 50, and since the wire contact portion 3032 includes the plurality of projecting edges 3034 extending in the second direction, the projecting edges 3034 pierce the insulation of the wires 50 and penetrate the wire core, thereby electrically interconnecting the conductive terminals 30 and the wires 50. After this process is completed, the conductive terminal 30 is held in the terminal frame 40, and is electrically connected to an external part by one end of the conductive terminal 30 as a tap.
In the actual processing of miniature motors, the wires used are often thin wires. In fig. 6, when the conductive terminal is forcibly pressed into the terminal frame made of, for example, plastic, the thin wire is slightly embedded into the inner wall of the terminal frame toward the lower left direction by the force, and the terminal frame serves as a buffer, so that the risk of breakage of the thin wire after being pressed by the wire contact portion can be reduced.
In fig. 1, which represents the prior art, each raised edge 1033 is perpendicular to the second direction, and the prior art uses a scraping process to machine the raised edges 1033. But for the convex edge 3034 extending in the second direction in the present invention, it cannot be processed using a scraping process. In the process of processing the conductive terminal, the structural feature of the protruding edge needs to be processed on the plate-shaped metal piece, and then the plate-shaped metal piece is bent to sequentially form the first arm and the second arm. Since the plate-like metal piece cannot provide both end portions as the start end and the end of the convex edge in the present invention before bending, this makes scraping processing of the wire contact portion impossible. Therefore, the invention adopts perforation and flanging technology to process and obtain the raised edge. The flanging process refers to forming straight walls or flanges with a certain angle along the curved edge on the plane or curved surface part of the workpiece by utilizing the action of a die, namely forming the convex edge in the invention.
Fig. 7 is a detailed view of a raised edge of a conductive terminal according to one embodiment of the present invention. In fig. 7, the wire contact portion 3032 further includes one or more bar-shaped through holes 3035 formed on the first portion 3031 in the second direction. Wherein the edges forming these strip-shaped through holes 3035 comprise sharp raised edges 3034. In the process of manufacturing the conductive terminal 30, a plurality of bar-shaped through holes 3035 are first punched in a plate-shaped metal member using a punching process, and then the original edges of the bar-shaped through holes 3035 are turned to form sharp convex edges 3034.
In this embodiment, during insertion of the conductive terminal 30 into the terminal frame 40, the conductive terminal 30 receives a pressing force F from the inner wall of the terminal frame 40, perpendicular to the contact surface of the wire contact portion 3032 with the inner wall of the terminal frame 2 . F as shown in FIG. 6 2 Is directed to the upper right. F (F) 2 The second arm 303 is concavely deformed toward the first arm 302 during insertion of the conductive terminal 30 into the terminal frame 40. In order to solve the above-described problem, in the present embodiment, the conductive terminal 30 further includes a support portion 304, the support portion 304 being located between the first arm 302 and the second arm 303, formed on the first arm 302 and extending toward the second arm 303. When the conductive terminal 30 is inserted into the terminal frame 40, the supporting portion 304 abuts between the first arm 302 and the second arm 303 to prevent the second arm 303 from being deformed. In the present embodiment, as shown in fig. 5, the support 304 abuts between the first arm 302 and the second portion 3033 of the second arm 303. In one example, as shown in fig. 8, the support 304 abuts between the first arm 302 and the first portion 3031 of the second arm 303. The support portion may be a block structure or a dumbbell structure in addition to the plate structure shown in fig. 5 and 8. In another example, as shown in fig. 9, a block-shaped support 304 abuts between the first arm 302 and the second arm 303.
In an embodiment of the present invention, as shown in fig. 3, the conductive terminal further includes a terminal contact portion 305, the terminal contact portion 305 being formed extending outwardly from an end of the first arm 302 remote from the first end 3011 of the first connection portion 301 and configured to be electrically connected to an external component. In another example, the terminal contact portion 305 is formed extending outwardly from an end of the second arm 303 remote from the second end 3012 of the first connection portion 301. The terminal contact portion 305 shown in fig. 3 is a folded bar structure, and the terminal contact portion may be a plate-like structure, a folded plate structure, a tile-like structure, or the like, and the structure of the terminal contact portion may be adjusted according to the specific application of the external member.
In an embodiment of the present invention, as shown in fig. 3, the conductive terminal 30 further includes locking portions 306, the locking portions 306 protruding outwardly from both sides of the first arm 302 or the second arm 303 and configured to lock the conductive terminal 30 within the terminal frame 40 when the conductive terminal 30 is inserted into the terminal frame 40. Specifically, four grooves for locking the terminal 30 are provided on the inner side wall of the terminal frame 40. When the conductive terminal 30 is inserted into the terminal frame 40 to press-contact the wire 50, the four locking portions 306 of the conductive terminal 30 are received in the four grooves and locked therein by the grooves such that the conductive terminal 30 is not moved in and out.
In an embodiment of the present invention, the conductive terminal 30 further includes a positioning through hole formed on the first arm 302 and configured to position the conductive terminal 30 when the conductive terminal 30 is processed. As described above, in the process of processing the conductive terminal, it is necessary to process the plate-shaped metal member first, and after the processing of the specific features of the plate-shaped metal member is completed, the plate-shaped metal member is sequentially bent, so that the first arm 302 and the second arm 303 are sequentially formed. Therefore, in the case of processing a plate-like metal member, the positioning circular through-hole in the first arm 302 is required as a reference.
Although the present invention has been described herein with reference to particular examples, which are intended to be illustrative only and not to be limiting of the invention, it will be apparent to those of ordinary skill in the art that changes, additions or deletions may be made to the disclosed embodiments without departing from the spirit and scope of the invention.

Claims (14)

1. A conductive terminal for connecting wires, comprising:
a first connection portion;
a first arm formed extending in a first direction from a first end of the first connection portion;
a second arm including a first portion extending from a second end of the first connection portion in a second direction that is angled from the first direction, wherein the first portion includes:
and a wire contact portion provided on the first portion in the second direction and configured to pierce an insulating layer of a wire placed in one terminal frame to form an electrical connection with the wire when the conductive terminal is inserted into the terminal frame in a direction opposite to the first direction.
2. The conductive terminal of claim 1, wherein the second arm further comprises a second portion formed to extend in a third direction from an end of the first portion remote from the second end of the first connection portion.
3. The conductive terminal of claim 2, wherein the third direction is parallel to the first direction.
4. The conductive terminal of claim 1, wherein the wire contact portion includes one or more sharp raised edges formed on the first portion in the second direction.
5. The conductive terminal of claim 4, the wire contact further comprising one or more strip-shaped through holes formed in the first portion along the second direction, wherein an edge forming the strip-shaped through holes comprises the sharp raised edge.
6. The conductive terminal of claim 5, wherein the raised edge is formed using a flanging process.
7. The conductive terminal of claim 1, further comprising a support portion located between the first and second arms and configured to abut between the first and second arms to prevent deformation of the second arm when the conductive terminal is inserted into the terminal backbone.
8. The conductive terminal according to claim 1, further comprising a terminal contact portion formed extending outwardly from an end of the first arm remote from the first end of the first connection portion and configured to be electrically connected with an external component.
9. The conductive terminal according to claim 1, further comprising a terminal contact portion formed extending outwardly from an end of the second arm remote from the second end of the first connection portion and configured to be electrically connected with an external component.
10. The conductive terminal of claim 1, further comprising a locking portion extending outwardly from both sides of the first arm or the second arm and configured to lock the conductive terminal within the terminal backbone when the conductive terminal is inserted within the terminal backbone.
11. The conductive terminal of claim 1, further comprising a locating through hole formed on the first arm and configured to locate the conductive terminal when the conductive terminal is processed.
12. A conductive terminal for connecting wires, comprising:
a first connection portion;
a first arm formed extending in a first direction from a first end of the first connection portion;
a second arm comprising a first portion extending from a second end of the first connection portion in a second direction that is angled from the first direction, wherein the first portion has at least one strip-shaped through hole formed in the second direction, wherein an edge forming the strip-shaped through hole comprises a sharp raised edge operable to pierce a wire to make electrical connection with the wire.
13. The conductive terminal of claim 12, wherein the raised edge is formed using a flanging process.
14. The conductive terminal of claim 12, wherein the second arm further comprises a second portion extending from an end of the first portion remote from the second end of the first connection portion along a third direction, wherein the third direction is parallel to the first direction.
CN202210448255.9A 2022-04-26 2022-04-26 Conductive terminal for connecting wires Pending CN116995453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210448255.9A CN116995453A (en) 2022-04-26 2022-04-26 Conductive terminal for connecting wires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210448255.9A CN116995453A (en) 2022-04-26 2022-04-26 Conductive terminal for connecting wires

Publications (1)

Publication Number Publication Date
CN116995453A true CN116995453A (en) 2023-11-03

Family

ID=88532676

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210448255.9A Pending CN116995453A (en) 2022-04-26 2022-04-26 Conductive terminal for connecting wires

Country Status (1)

Country Link
CN (1) CN116995453A (en)

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