CN116979340B - Manufacturing method of electric connection terminal and electric connection terminal manufactured by same - Google Patents
Manufacturing method of electric connection terminal and electric connection terminal manufactured by same Download PDFInfo
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- CN116979340B CN116979340B CN202310969464.2A CN202310969464A CN116979340B CN 116979340 B CN116979340 B CN 116979340B CN 202310969464 A CN202310969464 A CN 202310969464A CN 116979340 B CN116979340 B CN 116979340B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 50
- 238000002788 crimping Methods 0.000 claims abstract description 53
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000007769 metal material Substances 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 20
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical group [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- 239000010951 brass Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention provides a manufacturing method of an electric connection terminal and the electric connection terminal manufactured by the method, which comprises the following steps: s1, manufacturing a torsion spring; providing a first metal sheet, stamping the first metal sheet to form a grid-shaped metal sheet, curling to form a hollow cylinder, and twisting the hollow cylinder to form a torsion spring; s2, manufacturing a terminal bottom bracket; providing a second metal material sheet, rolling the second metal material sheet into a crimping part and a plugging part, wherein the two ends of the crimping part and the plugging part are tubular bodies, and flattening the middle parts of the crimping part and the plugging part to form a connecting part; the crimping part forms a crimping hole for crimping the cable, and the inserting part forms a mounting groove for mounting the torsion spring; s3, inserting the torsion spring processed in the step S1 into the mounting groove on the terminal collet plug-in part processed in the step S2, and finishing the processing of the electric connection terminal. By the manufacturing method, the metal material sheets are subjected to stamping forming and finally assembled to form the electric connection terminal, so that the operation is simple, the production efficiency is greatly improved, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of connectors, in particular to a manufacturing method of an electric connection terminal and the electric connection terminal manufactured by the method.
Background
In electrical engineering, the key to whether an electrical connection is reliable is that the electrical connection is made by means of an electrical connection, and the terminal is an important part of the electrical connection, in order to provide a reliable connection, avoiding the risk of contact failure between different conductors. Along with the development of terminals, the application range of the terminals is wider and wider, for example, the terminals are widely applied in the fields of smart home, automobiles, communication, computers, peripheral equipment, industry, military aviation and the like, and the requirements of different fields on the terminals are different, so that a plurality of various connecting terminals can be seen in the market. Meanwhile, the existing electric connection terminal processing technology is complex, the cost is high, and because connection points exist among components, if the current is large after the electric connection terminal is used, the temperature of the connection points rises faster, the aging of an electric connector plug can be aggravated, and the service life of the electric connection terminal is reduced.
Disclosure of Invention
The invention aims to provide a manufacturing method of an electric connection terminal and the electric connection terminal manufactured by the method, so as to solve the problems that the existing electric connection terminal is complex in processing technology and high in cost, and because connection points exist among components, the connection points heat up more quickly after use, such as larger current, the aging of an electric connector plug is aggravated, and the service life is reduced.
In order to solve the technical problems, the invention provides a manufacturing method of an electric connection terminal, which comprises the following steps:
s1, manufacturing a torsion spring; providing a first metal sheet, stamping the first metal sheet to form a grid-shaped metal sheet, curling to form a hollow cylinder, and twisting the hollow cylinder to form a torsion spring;
s2, manufacturing a terminal bottom bracket; providing a second metal material sheet, rolling the second metal material sheet into a crimping part and a plugging part, wherein the two ends of the crimping part and the plugging part are tubular bodies, and flattening the middle parts of the crimping part and the plugging part to form a connecting part; the crimping part forms a crimping hole for crimping the cable, and the inserting part forms a mounting groove for mounting the torsion spring;
S3, inserting the torsion spring processed in the step S1 into the mounting groove on the terminal collet plug-in part processed in the step S2, and finishing the processing of the electric connection terminal.
Preferably, the metal sheet of step S1 is a beryllium copper sheet.
Preferably, the metal web in step S2 is a copper web or a copper alloy web.
As a preferred embodiment of the present invention, step S2 includes: the second metal sheet is rolled into a tubular body, and the middle part of the tubular body is flattened to form a connecting part.
As a preferred embodiment of the present invention, step S2 further includes: the second metal material sheet is firstly formed into an 'I' -shaped material sheet through stamping forming, and the 'I' -shaped material sheet is respectively coiled into a compression joint part and an inserting part, wherein the two ends of the compression joint part and the inserting part are tubular bodies.
As a preferred embodiment of the present invention, step S2 further includes: the second metal material sheet forms a T-shaped material sheet through first stamping, then the upper end and the lower end of the T-shaped material sheet are respectively coiled into a tubular body, and then the middle part of the tubular body is subjected to second stamping flattening to form a connecting part with a flat middle part, and the connecting parts and the inserting parts are connected with the connecting part, wherein the two ends of the connecting part are the crimping parts and the inserting parts of the tubular body.
In the step S3, after the torsion spring is inserted into the mounting groove on the terminal collet plugging portion, the opening of the plugging portion is subjected to a closing-up treatment to prevent the torsion spring from falling off.
In the present invention, the plug portion of the terminal shoe is preferably bent in a direction perpendicular to the connecting portion to form an elbow electric connection terminal.
The invention also provides an electric connection terminal manufactured by the manufacturing method of the electric connection terminal, which comprises the following components: the torsion spring and the terminal collet manufactured in the step S1 and the step S2 are provided with a crimping part and a plugging part at two ends, and the crimping part and the plugging part are integrally formed through a connecting part; wherein, the compression joint part is provided with a compression joint hole, and the plug part is provided with a mounting groove; the torsion spring is arranged in the mounting groove.
Preferably, the plug-in connection and the connection of the terminal shoe are connected in an elbow-shaped and/or straight-head-shaped manner.
Compared with the prior art, the technical scheme provided by the invention has the following advantages:
The manufacturing method of the invention comprises the steps of firstly manufacturing a torsion spring; providing a first metal sheet, stamping the first metal sheet to form a grid-shaped metal sheet, curling to form a hollow cylinder, and twisting the hollow cylinder to form a torsion spring; secondly, manufacturing a terminal bottom bracket; providing a second metal material sheet, rolling the second metal material sheet into a crimping part and a plugging part, wherein the two ends of the crimping part and the plugging part are tubular bodies, and flattening the middle parts of the crimping part and the plugging part to form a connecting part; the crimping part forms a crimping hole for crimping the cable, and the inserting part forms a mounting groove for mounting the torsion spring; and finally, inserting the torsion spring processed in the step S1 into the mounting groove on the terminal collet plug-in part processed in the step S2 to complete the processing of the electric connection terminal. Therefore, by adopting the manufacturing method, the metal sheet is subjected to stamping forming and finally assembled to form the electric connection terminal, so that the operation is simple, the production efficiency is greatly improved, and the cost is reduced; and the torsion spring and the terminal collet formed by stamping have high dimensional accuracy and stable quality. In this way, the current transmission capability and efficiency of the electric connection terminal assembled by the torsion spring and the terminal base are also enhanced.
Moreover, because the crimping part and the inserting part of the terminal collet are integrally formed through the connecting part, the strength of the terminal collet is higher, thereby prolonging the service life of the electric connection terminal.
Meanwhile, the invention also provides a manufacturing method of the elbow electric connection terminal, which is free from connecting more than two parts together by means of threads, welding and the like, so as to adapt to the electric connection requirement of a nonlinear angle, effectively reduce the electric loss caused by assembly of the parts, and has the advantages of simple structure, no need of complex process production, lower cost and long service life.
Drawings
In order to more clearly illustrate the technical solutions of the prior art and the embodiments of the present application, the drawings required for the description of the prior art and the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for manufacturing an electrical connection terminal according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a stamping process of a metal web into an "I" shape according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of a process for stamping a metal web into a "T" shape according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a processing flow of the torsion spring disclosed in the embodiment of the present invention;
FIG. 5 is a schematic illustration of an "I" shaped web with notches and tabs as disclosed in an embodiment of the present invention;
FIG. 6 is a schematic view of a "T" shaped web with notches and tabs as disclosed in an embodiment of the present invention.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the method for manufacturing an electrical connection terminal and the electrical connection terminal manufactured by the method are described in further detail below with reference to the accompanying drawings.
Example 1
Referring to fig. 1, the present invention provides a method for manufacturing an electrical connection terminal, which includes the following steps:
S1, manufacturing a torsion spring; providing a first metal sheet, stamping the first metal sheet to form a grid-shaped metal sheet, curling to form a hollow cylinder, and twisting the hollow cylinder to form a torsion spring.
Firstly, a metal sheet is punched into a connecting contact piece with a grid-shaped structure through a press machine, two sides of the connecting contact piece extending in the length direction are provided with belt edges, and grid bars which are uniformly distributed are formed between the two belt edges. Preferably, the metal sheet is a beryllium copper sheet. And secondly, the connecting contact pieces are curled end to end, so that a hollow cylinder shape is formed. Finally, twisting the hollow cylindrical connecting contact piece into a torsion spring through a torsion spring twisting machine, as shown in fig. 4; meanwhile, the size of the torsion spring is matched with that of the mounting groove in the step S2.
The connecting piece is twisted into the torsion spring through processing, when the contact pin is inserted into the torsion spring, the grid bars of the torsion spring are clung to the outer surface of the contact pin in a larger range, multi-line contact is formed, and the inserting and extracting force is soft and stable. Meanwhile, the torsion spring is made of beryllium copper alloy material, has higher strength and elasticity and good conductivity, and thus the service life of the electric connection terminal is prolonged.
S2, manufacturing a terminal bottom bracket; providing a second metal material sheet, rolling the second metal material sheet into a crimping part and a plugging part, wherein the two ends of the crimping part and the plugging part are tubular bodies, and flattening the middle parts of the crimping part and the plugging part to form a connecting part; the crimping portion forms a crimping hole for crimping the cable, and the grafting portion forms a mounting groove for mounting the torsion spring.
The metal material sheet used for manufacturing the terminal base can be a red copper material sheet, a brass material sheet or a copper-aluminum composite material sheet, and the copper-aluminum composite material sheet is used for manufacturing the terminal base in a preferable mode. The copper-aluminum composite sheet is punched by a press machine, then curled, a crimping part and an inserting part with two ends being tubular bodies are formed after curling, and then the middle parts of the crimping part and the inserting part are punched and flattened to form a flat connecting part.
In order to more clearly describe the step S2 in the above embodiment of the method for manufacturing a connection terminal, the present embodiment further discloses a method for manufacturing a terminal shoe corresponding to the step S2, including the steps of:
step S201, the copper-aluminum composite sheet is curled to form a tubular body.
And step S202, stamping and flattening the middle part of the tubular body formed in the step S201 to form a terminal base with both ends in the shape of a tubular body and a flat middle part. The two ends of the connecting part are respectively in a crimping part and a plugging part of the terminal collet in a tubular shape, and the middle part of the connecting part is in a flat shape and is a connecting part of the terminal collet.
Referring to fig. 2, in order to more clearly describe the step S2 in the embodiment of the method for manufacturing the connection terminal, another method for manufacturing a terminal bracket corresponding to the step S2 is also disclosed in this embodiment, including the steps of:
And step S211, performing stamping forming on the copper-aluminum composite sheet to form an I-shaped sheet.
And S212, the upper end and the lower end of the I-shaped material sheet are curled end to end, and a crimping part and a plugging part of the terminal collet are respectively formed after curling. The crimping part and the inserting part are tubular bodies, and the pipelines of the crimping part and the inserting part are crimping holes for cable insertion and mounting grooves for mounting torsion springs respectively.
Referring to fig. 3, in order to more clearly describe the step S2 in the embodiment of the method for manufacturing the connection terminal, another method for manufacturing a terminal bracket corresponding to the step S2 is also disclosed in this embodiment, including the steps of:
step S221, punching the copper-aluminum composite material sheet for the first time through a press machine to form a T-shaped material sheet.
And S222, curling the upper end and the lower end of the T-shaped material sheet to form a tubular terminal collet with a larger pipe orifice at one end and a smaller pipe orifice at the other end.
And step S223, performing secondary stamping and flattening on the middle part of the tubular terminal base formed in the step S222 to form the terminal base with flat stamping parts and tubular connecting ends. The flat part is a connecting part of the terminal collet, the tubular bodies at the two ends are a crimping part and a plugging part of the terminal collet, the pipe orifice is a larger crimping part, and the pipe orifice is a smaller plugging part.
And step S3, inserting the torsion spring processed in the step S1 into the mounting groove on the terminal collet plug-in part processed in the step S2, and finishing the processing of the electric connection terminal.
Inserting the torsion spring formed by the processing of the step S1 into the mounting groove of the terminal collet plug-in part formed by the processing of the step S2, and ending the production flow of the electric connection terminal; because the assembly of the electric connection terminal is relatively simple, the production efficiency is greatly improved, and the production cost is reduced.
Meanwhile, in order to prevent the torsion spring in the mounting groove of the plug-in part from falling off due to frequent plug-in of the plug-in pin, after the torsion spring is inserted into the mounting groove, cold-pressing closing-in treatment is carried out on the pipe orifice of the plug-in part through a cold-pressing process.
Example two
In order to realize electrical connection at a non-linear angle, the embodiment provides a manufacturing method of an elbow electrical connection terminal, which specifically comprises the following steps:
Step S01, manufacturing a torsion spring according to step S1 of the first embodiment.
Step S02, a method for manufacturing a terminal shoe by applying the step S2 of the first embodiment is as follows:
And punching and crimping the copper-aluminum composite sheet to form a tubular body, flattening the middle part of the tubular body to form a straight-end terminal base with both ends in the shape of the tubular body and the middle part in the shape of a flat body, and bending and deforming the plugging part of the straight-end terminal base along the direction perpendicular to the connecting part to obtain the elbow terminal base.
Or stamping the copper-aluminum composite material sheet into an 'I' -shaped material sheet, then carrying out end-to-end curling on the upper end and the lower end of the 'I' -shaped material sheet formed after stamping to form a straight-end terminal bottom bracket, and then bending and processing and deforming the inserting part of the straight-end terminal bottom bracket along the direction perpendicular to the connecting part to obtain the elbow terminal bottom bracket.
Or, the copper-aluminum composite material sheet is punched for the first time to form a T-shaped material sheet, the T-shaped material sheet is curled and punched for the second time to form a connecting part with a flat middle part and a straight-head terminal bottom support connected with a crimping part and a plugging part of which the two ends are tubular bodies, and the plugging part of the manufactured straight-head terminal bottom support is bent and deformed along the direction perpendicular to the connecting part to obtain the elbow terminal bottom support.
And S03, assembling the torsion spring and the elbow terminal base obtained in the step S01 and the step S02 to form the elbow electric connection terminal.
During assembly, the torsion spring is inserted into the mounting groove of the elbow terminal collet plug-in part, and cold-pressing closing-in treatment is carried out on the pipe orifice of the plug-in part, so that the processing of the elbow electric connection terminal is completed.
In addition, it should be noted that in the first and second embodiments, according to the method for manufacturing the terminal base in step S2, in the step of punching the copper-aluminum composite sheet to form the "i" sheet or the "T" sheet, a plurality of notches and protrusions are punched and formed on the edges of the left and right sides of the "i" sheet or the "T" sheet respectively, so that in the step of curling the "i" sheet or the "T" sheet, the left and right sides of the "i" sheet or the "T" sheet are riveted with each other through the notches and protrusions, so that the structure of the formed terminal base is more firm, and the service life of the electrical connection terminal is further prolonged, as shown in fig. 5 and 6.
In the method for manufacturing the terminal shoe according to the first and second embodiments S2, the crimp portion of the tubular body is formed by crimping the metal material sheet, and then the crimp portion is pressed and flattened again by the press machine to form the crimp portion of the elliptical tubular body.
The invention also provides an electric connection terminal manufactured by the manufacturing method of the electric connection terminal, which specifically comprises the following steps: the torsion spring and the terminal collet manufactured in the step S1 and the step S2 are provided with a crimping part and a plugging part at two ends, and the crimping part and the plugging part are integrally formed through a connecting part; the crimping portion is provided with a crimping hole for inserting the cable, the inserting portion is provided with a mounting groove, and the torsion spring is mounted in the mounting groove.
Further, the plug-in part and the connecting part of the terminal collet are connected in an elbow shape and/or a straight head shape.
It will be understood that the application has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. The manufacturing method of the electric connection terminal is characterized by comprising the following steps:
S1, manufacturing a torsion spring; providing a first metal sheet, stamping the first metal sheet to form a grid-shaped metal sheet, curling to form a hollow cylinder, and twisting the hollow cylinder to form a torsion spring; wherein the first metal sheet is a beryllium copper sheet;
S2, manufacturing a terminal bottom bracket; providing a second metal material sheet, rolling the second metal material sheet into a press-connection part and an inserting part with two ends being tubular bodies, and flattening the middle parts of the press-connection part and the inserting part to form a connecting part; the crimping part forms a crimping hole for crimping the cable, and the inserting part forms a mounting groove for mounting the torsion spring; the metal material sheets used for manufacturing the terminal bottom support are red copper material sheets, brass material sheets or copper-aluminum composite material sheets;
the manufacturing terminal shoe comprises the following substeps:
Step S221, punching the copper-aluminum composite material sheet for the first time through a press machine to form a T-shaped material sheet;
Step S222, curling the upper end and the lower end of the T-shaped material sheet to form a tubular terminal collet with a larger pipe orifice at one end and a smaller pipe orifice at the other end;
Step S223, the middle part of the tubular terminal collet formed in the step S222 is punched and flattened for the second time to form a terminal collet with flat punched parts and tubular bodies at two connected ends; the flat part is a connecting part of the terminal collet, the tubular bodies at the two ends are a crimping part and a plugging part of the terminal collet, the pipe orifice is a larger crimping part, and the pipe orifice is a smaller plugging part;
pressing and flattening the press-fit part again by a press machine to form a press-fit part of the elliptic tubular body;
bending and deforming the plug-in part of the manufactured straight-end terminal collet along the direction perpendicular to the connecting part to obtain an elbow terminal collet;
S3, inserting the torsion spring processed in the step S1 into the mounting groove on the plug-in part of the terminal collet processed in the step S2, and closing up the opening of the plug-in part to prevent the torsion spring from falling off and finish the processing of the electric connection terminal.
2. The method for manufacturing an electrical connection terminal according to claim 1, wherein the step S2 comprises: the second metal sheet is rolled into a tubular body, and the middle part of the tubular body is flattened to form a connecting part.
3. The method for manufacturing an electrical connection terminal according to claim 1, wherein the step S2 further comprises: the second metal material sheet is firstly formed into an 'I' -shaped material sheet through stamping forming, and the 'I' -shaped material sheet is respectively coiled into a compression joint part and an inserting part, wherein the two ends of the compression joint part and the inserting part are tubular bodies.
4. An electrical connection terminal made according to the method of making of claim 1, comprising: the torsion springs and the terminal supports are manufactured in the step S1 and the step S2, the two ends of the terminal supports are provided with the crimping parts and the inserting parts, and the crimping parts and the inserting parts are integrally formed through the connecting parts; the crimping part is provided with a crimping hole, and the inserting part is provided with a mounting groove; the torsion spring is installed in the installation groove.
5. The electrical connection terminal of claim 4, wherein the terminal shoe has a bent connection between the mating portion and the connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310969464.2A CN116979340B (en) | 2023-08-03 | 2023-08-03 | Manufacturing method of electric connection terminal and electric connection terminal manufactured by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310969464.2A CN116979340B (en) | 2023-08-03 | 2023-08-03 | Manufacturing method of electric connection terminal and electric connection terminal manufactured by same |
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| Publication Number | Publication Date |
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| CN116979340A CN116979340A (en) | 2023-10-31 |
| CN116979340B true CN116979340B (en) | 2024-09-06 |
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| CN102983437A (en) * | 2012-12-14 | 2013-03-20 | 东莞市泽润电子科技有限公司 | Rolling terminal and manufacturing method thereof |
| CN106532315A (en) * | 2016-10-28 | 2017-03-22 | 苏州可奈特电子科技有限公司 | Large-current reed and production process thereof |
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| CN116979340A (en) | 2023-10-31 |
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