CN113571942B - Female terminal for connector, male terminal, and method for manufacturing female terminal - Google Patents
Female terminal for connector, male terminal, and method for manufacturing female terminal Download PDFInfo
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- CN113571942B CN113571942B CN202110836488.1A CN202110836488A CN113571942B CN 113571942 B CN113571942 B CN 113571942B CN 202110836488 A CN202110836488 A CN 202110836488A CN 113571942 B CN113571942 B CN 113571942B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 4
- 238000003780 insertion Methods 0.000 claims abstract description 42
- 230000037431 insertion Effects 0.000 claims abstract description 42
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 13
- 235000014676 Phragmites communis Nutrition 0.000 description 7
- 238000005452 bending Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
-
- 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
Abstract
The present invention provides a female terminal for a connector, a male terminal, a snap spring for a female terminal, and a method of manufacturing the same, wherein the female terminal is characterized by comprising: a cylinder body made of a conductor, the front end of which has an insertion port into which the male terminal is inserted; and the clamping spring is made of an elastic conductor, is axially positioned on the inner wall of the cylinder, circumferentially contacts with the inner wall of the cylinder and is used for applying radial fastening force to the main body part of the male terminal matched with the female terminal. The female terminal provided by the invention has the advantages of simple structure and low cost, but has high reliability of connection with the male terminal, and can bear large current.
Description
Technical Field
The present invention relates to a female terminal for a connector, a male terminal, the female terminal, and a method of manufacturing the female terminal.
Background
Currently, industrial electrical equipment is increasingly powered with greater supply current to the connectors required. Industrial electric appliances are often large-sized and costly because of their small restrictions on space and use conditions. In addition, in the functional industrial production, a complete safety disaster prevention system is usually provided, and a relatively perfect processing scheme is provided under the conditions of failure, short circuit, fire and the like of a connector of power supply equipment.
However, with the development of technology, the power consumption of consumer appliances is currently in a specific field, such as electric vehicles, electric vehicle power stations, and the like, and also has a tendency to have a large current. In particular, in the rapid charging of electric vehicles, a current is required to be larger and larger. Further, such consumer electric appliances are limited in installation space, and miniaturization of the equipment is demanded. Moreover, such devices are often disposed in public areas where population flows are relatively dense, and once the risks such as failure, short circuit, fire and the like occur, the devices cannot be disposed in time, so that the loss is enlarged, and the life and property safety of people is endangered.
Disclosure of Invention
In order to solve the above-mentioned problems in the prior art, the present invention provides a terminal for a connector, which includes a female terminal and a male terminal mated therewith.
In some embodiments, the female terminal for a connector of the present invention is characterized in that: at least one annular clamping spring made of elastic bodies is arranged in the cylinder body with the insertion opening at the front end, the annular clamping spring is coaxially arranged along the axis of the cylinder body and made of elastic conductors, and the clamping spring is axially positioned on the inner wall of the cylinder body and is contacted with the inner wall of the cylinder body for clamping a male terminal matched with the female terminal.
In some embodiments, it is preferred that the female terminal is characterized by: and an embedded window matched with the clamp spring in shape is formed in the side wall of the cylinder body.
In some embodiments, it is preferred that the female terminal is characterized by: the cylinder body is provided with mounting grooves for accommodating the clamping springs at positions corresponding to the clamping springs on the inner wall, and the axial positions of the mounting grooves on the side wall of the cylinder body correspond to the embedded windows.
In some embodiments, it is preferred that the female terminal is characterized by: in the axial direction of the cylinder, the position of the insertion window relative to the mounting groove is offset to the rear side by a prescribed distance.
According to the female terminal of each of the embodiments described above, the female terminal applicable to a high-current connector can be manufactured with a simple structure and at low manufacturing cost, and reliability is high.
The male terminal for the connector is provided with a columnar main body part which can be inserted into the cylinder body of the female terminal from the insertion port and clamped by a clamp spring arranged in the cylinder body.
In some embodiments, the male terminal of the present invention is preferably characterized in that: the front end of the main body part is provided with a chamfer. Therefore, the front end of the main body part of the male terminal can conveniently push away the snap spring in the female terminal and can be inserted into a stable working position.
In some embodiments, the male terminal of the present invention is preferably characterized in that: a concave part is formed on the side wall of the main body part and is used for being clamped with the clamp spring arranged in the cylinder body of the female terminal. Through having the depressed part, can make the male terminal insert the operation have clear and definite feel, when guaranteeing to peg graft firmly, ensure that can be effectual and quick messenger male terminal and female terminal break away from when unexpected atress.
The invention also provides a manufacturing method of the female terminal, which comprises the steps of manufacturing a cylinder body with an inserting port at the front end, and installing at least one annular clamp spring made of an elastic body in the cylinder body in a coaxial arrangement mode along the axis of the cylinder body. The female terminal manufactured by the method has low production cost, and the obtained female terminal has high reliability and is suitable for bearing large current.
In some embodiments, the manufacturing method of the present invention preferably includes forming a mounting groove on an inner wall of the cylinder, and mounting the clip spring in the mounting groove. The mounting groove is formed in the cylinder body, so that the mounting can be easily confirmed in place during mounting, and the clamp spring can be stably mounted in the cylinder body and cannot be separated.
In some embodiments, the manufacturing method of the present invention preferably includes providing an insertion window in the cylinder side wall corresponding to the mounting groove, and mounting the clip spring into the mounting groove through the insertion window. In the case of installing a plurality of snap springs in the cylinder, the snap springs can be conveniently installed through the insertion window, and in particular, it is particularly effective for the snap springs not provided at the position closest to the cylinder insertion port. And simple to operate, the stable in structure can not take place unexpected and deviate from after the jump ring installation.
According to the manufacturing method of the above embodiment, the female terminal for the connector can be easily manufactured, and the quality is stable and reliable, and the manufacturing method can be applied to a case where a large current is carried.
Drawings
Fig. 1 is a structural view of a female terminal in a first embodiment of the present invention.
Fig. 2 is a cross-sectional view of a female terminal in a first embodiment of the present invention.
Fig. 3 is an exploded view of the female terminal in the first embodiment of the present invention.
Fig. 4a is an explanatory diagram of a clip spring manufacturing process in the first embodiment of the present invention.
Fig. 4b is an explanatory diagram of a clip spring manufacturing process in the first embodiment of the present invention.
Fig. 5 is a cross-sectional view showing the combination of the male terminal and the female terminal in the first embodiment of the present invention.
Fig. 6 is a structural view of a female terminal in a second embodiment of the present invention.
Fig. 7 is a cross-sectional view of a female terminal in a second embodiment of the present invention.
Fig. 8 is a cross-sectional view showing the combination of a male terminal and a female terminal in the second embodiment of the present invention.
Fig. 9 is a structural view for explaining a structure of an insertion window in a second embodiment of the present invention.
Fig. 10 is a structural view for explaining a structure of an insertion window in a second embodiment of the present invention.
Fig. 11 is a structural view of a male terminal in a third embodiment of the present invention.
Fig. 12 is a cross-sectional view showing a state in which a male terminal and a female terminal of a third embodiment of the present invention are mated.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
[ first embodiment ]
Fig. 1 is a structural view of a female terminal 1 according to a first embodiment of the present invention; fig. 2 is a cross-sectional view of a female terminal of a first embodiment of the present invention; fig. 3 is an exploded view of a female terminal according to a first embodiment of the present invention.
As shown in fig. 1 to 3, the terminal 1 is a female terminal, and includes a cylinder 100 and a clip spring 110 fitted into the cylinder 100. In the present embodiment, the barrel of the terminal 100 is formed as a barrel 100 having an open insertion port 102 at the front end. The cylinder 100 is provided with a snap spring 110, and the snap spring 110 is substantially cylindrical and coaxially disposed in the cylinder 100.
As shown in fig. 3, in the present embodiment, the snap spring 110 has an inner diameter that varies, and the diameter of both ends is substantially the same as the inner diameter of the cylinder 100 at the mounting position, and the diameter of the middle portion is smaller than the diameter of both ends. The clip spring 110 has an annular seat 111 on the front end side and an annular seat 112 on the rear end side, and a plurality of spring pieces 113 extending from the seat 111 to the seat 112 are formed between the seats 111, 112. The diameter of the middle part of the clip spring 110 is smaller than the diameter of both ends by making the reed 113 take a shape bent toward the axial direction at the extended middle part position.
In the present embodiment, as shown in fig. 4a, the clip 110 may be manufactured by punching and cutting an elastic sheet-like base material to form a clip base 110', forming a shape having front and rear lateral sides 111', 112' to be formed into the seat portions 111, 112 and a plurality of longitudinal ribs 113' connecting the front and rear lateral sides 111', 112' for forming the reed 113, bending and shaping the longitudinal ribs 113', and then bending the front and rear lateral sides 111', 112' into a ring shape to form the seat portions 111, 112. In the embodiment shown in fig. 4b, the longitudinal ribs 113' are shaped by bending. Of course, the bending and shaping process of cutting the longitudinal ribs 113 'and 113' may be performed in one press molding.
Then, the shaped clip substrate 110' is bent into a cylindrical shape, so that the side wall of the cylindrical base material of the clip 110 forms a plurality of reeds 113 as protrusions toward the axial inside.
After the clip substrate 110' is bent into the clip 110, the front and rear lateral sides 111', 112' enclose the seats 111, 112, respectively, in a state where no force is applied. A gap may be provided at the cylindrical seam. By applying force to overlap the lateral edges 111', 112' at the joint, the diameter of the seat portions 111, 112 of the cylindrical clip 110 is reduced, the clip 110 is pushed into the insertion port 102 of the cylinder 100 in a state where the diameter is reduced, the force applied to the seat portions 111, 112 after the pushing is removed, and the diameters of the seat portions 111, 112 are enlarged, so that the overlapping portions of the lateral edges 111', 112' at the joint are restored, and a substantially complete ring shape is formed, and the clip 110 can be stably mounted in the cylinder 100.
In the present embodiment, an installation groove 120 for accommodating and fitting the clip 110 is formed in the inner wall of the cylinder 100, and the installation groove 120 has a front stopper seat surface 122 located on the insertion port side and a rear stopper seat surface 124 located on the rear side of the cylinder 100, and the axial position of the clip 110 in the cylinder 100 is regulated by the front and rear stopper seat surfaces 122, 124. After the snap spring 110 is pushed into the cylinder 110 and reaches the installation groove 120, the diameters of the seats 111, 112 of the snap spring 110 are enlarged, so that the snap spring 110 is stably inserted into the installation groove 120. In addition, in a state where no axial force is applied to the clip spring 110, the axial length of the clip spring 110 can be made slightly smaller than the axial dimension of the mounting groove 120 by adjusting the length and curvature of the reed 113 (the longitudinal rib 113'). In this way, when the male terminal is inserted into the female terminal 1 and the clamp spring 110 therein, when the spring 113 is deformed by being pressed by the male terminal, the distance between the two end seat portions 111 and 112 is slightly increased by pushing the two end seat portions 111 and 112, and when the spring 113 is not forced, the axial length of the clamp spring 110 is slightly smaller than the axial dimension of the mounting groove 120, so that the deformation amount of the two end seat portions 111 and 112 caused by the pressing deformation of the spring 113 is formed, the male terminal can be smoothly inserted, an operator can obtain a good insertion feel, and the operator can confirm whether the terminal connection is in place or not only by virtue of the feel without visual observation.
According to the female terminal of the embodiment, the structure is simple, the manufacturing cost is low, the connection stability with a male terminal which is described later is good, and the female terminal can especially meet the working requirement of long-time large current.
The structure of the male terminal corresponding to the female terminal of the present embodiment will be described below. In the present embodiment, the male terminal 2 has the main body 200 inserted into the female terminal 1, the main body 200 is formed into a cylindrical shape, and the front end 201 is formed with a chamfer, so that the spring 113 of the snap spring 110 can be smoothly pushed outward when the main body 200 is inserted into the female terminal 1 to contact the snap spring 110.
When the body 200 of the male terminal 2 is completely inserted into the female terminal 1 through the reed 113, the body 200 of the male terminal 2 is pinched by the clip spring 110, so that the body 200 is electrically connected to the inner wall of the cylinder 100 of the female terminal 1 through the reed 113 in addition to the contact with the inner wall of the cylinder 100 of the female terminal 1. In such a mounted state, the inner wall surface of the cylindrical body 100 of the female terminal 1 can form a larger contact area with the main body portion of the male terminal 2, so that the resistivity of the contact portion between the female terminal 1 and the male terminal 2 is significantly reduced. Moreover, the body 200 of the male terminal 2 is fastened by the reed 113, so that the body 200 can be stably contacted when the male terminal is inserted into the cylinder 100, thereby ensuring the stability of current when large current passes, preventing local overheating or spark generation caused by poor contact, improving the safety performance of the plug connector and the reliability of long-term use, effectively avoiding current impact caused by unstable contact for large-current power supply and electric equipment connected with the female terminal 1 and the male terminal 2, reducing the design standard of the power supply and the electric equipment or obviously improving the design redundancy of the power supply and the electric equipment, and obviously reducing the development, manufacturing and maintenance costs of the power supply and the electric equipment.
[ second embodiment ]
In the first embodiment, one clip 110 is provided in the female terminal 1, and in order to further improve the stability of the coupling between the female terminal and the male terminal, in the present embodiment, two clips 110, 110A are provided in the cylindrical body 100A of the female terminal 1A.
Fig. 6 is a structural view of a female terminal according to a second embodiment of the present invention; fig. 7 is a cross-sectional view of a female terminal in a second embodiment of the present invention; fig. 8 is a cross-sectional view showing the combination of a male terminal and a female terminal in the second embodiment of the present invention.
In the present embodiment, two snap springs, respectively a snap spring 110 and a snap spring 110A, are provided in the cylinder 100A of the female terminal 1A. Similarly, mounting grooves 120 and 120A are provided in the inner wall of the cylinder 100A corresponding to the two clip springs 110 and 110A, respectively. The clip 110 and the mounting groove 120 may be configured and mounted in the same manner as in the first embodiment, but the clip 110A is provided at a position on the rear side of the female terminal 1A with respect to the clip 110, and therefore, if the same manner as the clip 110 is used, the clip is caught in the mounting groove 120 on the front end side of the cylinder 100A, and cannot be mounted further to the rear side. Therefore, in the present embodiment, at the position of the mounting groove 120A of the cylinder 100A, that is, at the position of mounting the snap spring 110A, the insertion window 130A matching the diameter and axial dimension of the snap spring 110A is opened on the side wall of the cylinder 100A.
Fig. 9 is a structural view for explaining a structure of an insertion window in a second embodiment of the present invention. Fig. 10 is a structural view for explaining a structure of an insertion window in a second embodiment of the present invention.
As shown in fig. 9 and 10, in the present embodiment, the position of the insertion window 130A is shifted rearward relative to the mounting groove 120A, that is, the front end side edge 132A and the rear end side edge 134A of the insertion window 130A are each offset rearward by a predetermined distance from the front end seating surface 122A and the rear end seating surface 124A of the mounting groove 120A.
Because the opening position of the insertion window 130A is offset from the mounting groove 120A by a predetermined distance in the axial direction, an annular step groove 136A is formed between the front end side edge 132A of the insertion window 130A and the front side seat surface 122A, and the step groove 136A can enable the seat 111A at the front end of the clip 110A to fall into the groove 136A after the clip 110A is inserted into the mounting groove 120A from the insertion window 130A, thereby stabilizing the mounting of the clip 110A and effectively preventing the clip 110A from being accidentally pulled out from the insertion window 130A.
On the other hand, a guide groove 138A extending substantially in the radial direction is formed between the rear side edge 134A of the insertion window 130A and the rear side seating surface 124A. The guide groove 138A guides the loading direction of the rear end side seat portion 112A of the snap spring 110A when the snap spring 110A is loaded from the insertion window 130A, and enables the loading operation of the snap spring 110A to be more stable and the loading operation to be completed quickly and reliably, both when the snap spring 110A is loaded manually and when the snap spring 110A is loaded automatically by a machine.
The structure of the snap spring 110A in this embodiment may be the same as the snap spring 110, but is different in the mounting manner of the two. In the clip 110A, the lateral edges 111', 112' may be overlapped at the joint so that the diameter of the clip 110A matches the width between the circumferential edges of the insertion window 130A when the clip is attached. In this state, the clip spring 110A is inserted into the insertion window 130A. After the clip 110A is inserted into the insertion window 130A, the clip 110A is released from the restraint and expands in diameter to be attached to the side wall surface of the mounting groove 120A. In order to ensure the stability of the installation of the snap spring 110A, only the seam of the snap spring 110A needs to be directed toward the inner side of the insertion window 130A.
The male terminal 2A corresponding to the female terminal 1A configured according to the present embodiment is substantially the same as that of the first embodiment described above, and is different only in that the cylindrical body 100A may be made longer by providing two snap springs 110, 110A in the cylindrical body 100A of the female terminal 1A, and in this case, the length of the male terminal 2A need only be matched with the inner length of the cylindrical body 100A of the female terminal 1A.
According to the present embodiment, when the main body 200A of the male terminal 2A is inserted into the cylindrical body 100A of the female terminal 1A, the main body 200A is contacted with the snap springs 110, 110A in sequence, so that the hand feeling when the male terminal 2A is inserted is changed by the number of times corresponding to the number of the snap springs 110, 110A, that is, the force needs to be applied by overcoming the resistance of the snap springs 110, 110A twice, and after the front end of the main body 200A pushes the snap spring 110A away by applying the force twice, the force required for insertion is larger than the force required for insertion after pushing the snap spring 110 for the first time, thereby forming a good insertion hand feeling, and whether the terminal connection is in place can be confirmed only by virtue of the hand feeling without visual observation.
Furthermore, according to the present embodiment, when the body portion 200A of the male terminal 2A is completely inserted into the female terminal 1A through the two snap springs 110, 110A, the body portion 200 of the male terminal 2 is pinched by the two snap springs 110, 110A, so that the body portion 200 is electrically connected to the inner wall of the cylinder 100A of the female terminal 1A via the springs 113, the seat portions 111, 112 of the two snap springs 110, 110A in addition to the contact with the inner wall of the cylinder 100 of the female terminal 1. In such a mounted state, the inner wall surface of the cylindrical body 100A of the female terminal 1A can not only form a larger contact area with the main body portion of the male terminal 2A, but also make the connection between the female terminal 1A and the male terminal 2A more stable. When high current passes through, the stability of the current can be ensured, local overheating or electric spark can not occur due to poor contact, the safety performance and the long-term use reliability of the plug connector are improved, and for the high-current power supply and electric equipment connected by the female terminal 1 and the male terminal 2, the current impact caused by unstable contact can be more effectively avoided, so that the design standard of the power supply and the electric equipment is reduced or the design redundancy of the power supply and the electric equipment is obviously improved, and the development, manufacturing and maintenance costs of the power supply and the electric equipment are obviously reduced.
[ third embodiment ]
In the first and second embodiments, the female terminal having a cylindrical structure and the male terminal to be engaged therewith are described, and in order to further improve the stability of the engagement between the female terminal and the male terminal, the female terminal 1A of the second embodiment is taken as an example, and the male terminal 2A to be engaged therewith is described in detail.
Fig. 11 is a cross-sectional view of a male terminal in a third embodiment of the present invention, and fig. 12 is a cross-sectional view of a mating state of the male terminal and a female terminal in the third embodiment of the present invention. As shown in fig. 11 and 12, the body 200B of the male terminal 2B in the present embodiment is formed in a cylindrical shape, and recesses 220 and 220A oriented in the axial direction are formed in the circumferential direction at positions corresponding to the snap springs 110 and 110A in the cylindrical body 100A of the female terminal 1A. The concave portions 220, 220A have a contour shape matching the curved shape of the spring 113 of the clip 110, 110A in a cross section passing through the axial center of the male terminal 2B, and can engage with the clip 110, 110A.
According to the male terminal 2B of the present embodiment, when it is inserted into the cylinder 100A of the female terminal 1A, first, the tip of the main body portion 200B increases in insertion force against the resistance of the snap spring 110 in the cylinder 110A of the female terminal 1A; then, the concave part 220A passes through the clamp spring 110 to form a suction feeling with reduced one-time insertion force; then the concave part 220A overcomes the resistance of the clamp spring 110 and moves from the clamp spring 110 to the deep part of the cylinder body 100A, and then the front end part of the main body part 200B again overcomes the resistance of the clamp spring 110B, so that the push-in resistance of the clamp spring and the main body part once or twice is formed to increase the hand feeling, and the push-in force is maximized; finally, the concave part 220A reaches the snap spring 110A, and the concave part 220 reaches the position of the snap spring 110, so that a second suction feeling with obviously reduced pushing force is formed.
According to the male terminal 2B of the present embodiment, since the concave portions 220, 220A are formed in the cylindrical body portion 200B, the hand feeling of the insertion operation is significantly changed when the male terminal is inserted into the female terminal 1A, and therefore, it is possible for the user to confirm whether or not the terminal connection is in place by merely touching the hand feeling without visual observation.
Further, since the snap springs 110 and 110A are fitted into the concave portions 220 and 220A, respectively, when the male terminal 2B is pulled out from the female terminal 1A, a larger force is required to overcome the resistance force caused by the fitting of the snap springs 110 and 110A into the concave portions 220 and 220A, when the pulling-out operation is started, as compared with the second embodiment described above, so that the pulling-out operation also has a good feel. In addition, when it is necessary to limit the initial force of the pulling-out operation, the male terminal 2B and the female terminal 1A of the present embodiment are more stably coupled, and are less likely to come loose, and have good reliability, as compared with the first and second embodiments.
According to the present embodiment, by providing the main body portion 200B of the male terminal 2B with the concave portions 220, 220A provided corresponding to the snap springs 110, 110A, in addition to the advantages of the stable contact of the first and second embodiments described above, the pulling-out operation thereof requires a certain force, and is particularly suitable for the case of supplying power to high-power electric devices by connecting wires in a public area.
In general, in the connector used in this case, it is particularly necessary to ensure the stability of the connection of the terminals, and as described in the present embodiment, by providing the recess portions 220, 220A corresponding to the snap springs 110, 110A in the main body portion 200B of the male terminal 2B, the connection stability of the male terminal 2B and the female terminal 1A can be further improved, and the occurrence of loosening due to unexpected stress of the lead wire can be avoided.
Moreover, at the initial moment of pulling out the male terminal 2B, a larger force needs to be applied to the male terminal 2B additionally, and once the matching between the concave parts 220 and 220A and the clamp springs 110 and 110A is released, the sliding resistance is relatively smaller, so that after the accidental stress of the lead is released, once the clamp springs 110 and 110A are pulled out of the concave parts 220 and 220A, the force required for pulling out the clamp springs is obviously reduced, and when the other stress is released, the clamp springs can be completely released after the applied accidental force reaches a certain degree, and the clamp springs are completely cut off. On one hand, the lead wire of the connecting terminal can be prevented from being torn off due to the fact that the terminal is not broken when the accidental stress is overlarge, so that the danger caused by breakage/exposure of the power supply line is avoided; on the other hand, after the unexpected stress reaches the specified size, the male terminal and the female terminal can be rapidly and completely disconnected, and the risks of ignition, heating and the like caused by poor contact or reduced overcurrent area due to partial disconnection of the terminals caused by the stress are avoided.
Several embodiments of the female terminal and the male terminal to which the present invention is applied are described above in detail. However, the present invention is not limited to the embodiments described in the above-described specific embodiments, and the applicable scope of the present invention may be extended to embodiments in which the above-described embodiments and a part or all of them are arbitrarily combined, or to embodiments in which a part is extracted therefrom, and those skilled in the art can make various modifications, alterations, and substitutions to the above-described embodiments and a part thereof based on the description of the present application, and these modifications, alterations, and substitutions are also within the scope of protection described in the claims of the present application.
Claims (5)
1. A female terminal for a connector, characterized in that:
at least one annular snap spring made of elastic body and coaxially arranged along the axis of the cylinder body is arranged in the cylinder body with the inserting opening at the front end,
the clamp spring is made of an elastic conductor, is axially positioned on the inner wall of the cylinder body, contacts with the inner wall of the cylinder body and is used for clamping a male terminal matched with the female terminal,
an embedded window matched with the snap spring in shape is arranged on the side wall of the cylinder body,
the cylinder body is provided with mounting grooves for accommodating the clamping springs at positions corresponding to the clamping springs on the inner wall,
the axial position of the mounting groove on the side wall of the cylinder body corresponds to the embedded window,
in the axial direction of the cylinder body, the position of the embedded window relative to the mounting groove is staggered to the rear side by a prescribed distance,
a step groove is formed between the front end side edge of the insertion window and the front side seating surface of the installation groove, a guide groove is formed between the rear side edge of the insertion window and the rear side seating surface of the installation groove,
and placing the clamping spring into the mounting groove from the embedded window, so that the seat part at the front end of the clamping spring falls into the step groove, and the seat part at the rear end side of the clamping spring is guided by the guide groove to be installed into the mounting groove.
2. A connector, comprising:
a female terminal as claimed in claim 1; and
a male terminal mated with the female terminal, wherein,
the male terminal has a cylindrical main body portion which is insertable into the cylindrical body of the female terminal as claimed in claim 1 from an insertion port and is clamped by a snap spring provided in the cylindrical body.
3. The connector of claim 2, wherein:
the front end of the main body part is provided with a chamfer.
4. A connector as claimed in claim 2 or 3, wherein:
a concave part is formed on the side wall of the main body part and is used for being clamped with the clamp spring arranged in the cylinder body of the female terminal.
5. A method for manufacturing a female terminal for a connector includes,
a cylinder body with an inserting opening at the front end is manufactured, at least one annular snap spring made of elastic body is arranged in the cylinder body along the axis of the cylinder body in a coaxial arrangement mode,
forming a mounting groove on the inner wall of the cylinder body, mounting the clamp spring in the mounting groove,
an insertion window is provided on the side wall of the cylinder body corresponding to the mounting groove, the insertion window is offset to the rear side by a predetermined distance relative to the position of the mounting groove in the axial direction of the cylinder body,
a step groove is formed between the front end side edge of the insertion window and the front side seating surface of the installation groove, a guide groove is formed between the rear side edge of the insertion window and the rear side seating surface of the installation groove,
and installing the clamp spring into the installation groove from the embedded window, so that the seat part at the front end of the clamp spring falls into the step groove, and the seat part at the rear end side of the clamp spring is guided by the guide groove to be installed into the installation groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110836488.1A CN113571942B (en) | 2021-07-23 | 2021-07-23 | Female terminal for connector, male terminal, and method for manufacturing female terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110836488.1A CN113571942B (en) | 2021-07-23 | 2021-07-23 | Female terminal for connector, male terminal, and method for manufacturing female terminal |
Publications (2)
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| CN113571942A CN113571942A (en) | 2021-10-29 |
| CN113571942B true CN113571942B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110836488.1A Active CN113571942B (en) | 2021-07-23 | 2021-07-23 | Female terminal for connector, male terminal, and method for manufacturing female terminal |
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| CN (1) | CN113571942B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113571942A (en) | 2021-10-29 |
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