CN210111078U - Fisheye terminal and connector - Google Patents
Fisheye terminal and connector Download PDFInfo
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- CN210111078U CN210111078U CN201920862229.4U CN201920862229U CN210111078U CN 210111078 U CN210111078 U CN 210111078U CN 201920862229 U CN201920862229 U CN 201920862229U CN 210111078 U CN210111078 U CN 210111078U
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- fisheye
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- fisheye terminal
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Abstract
The utility model provides a fisheye terminal and connector, fisheye terminal includes basal portion, assembly portion, pin portion and fisheye hole, the connector includes fisheye terminal and circuit board. The assembling part starts to generate stress when contacting with the through hole, and the fisheye hole extends into the pin part from the inside of the assembling part, so that the fisheye hole is positioned in the through hole when the assembling part contacts with the through hole, thereby avoiding the damage of the through hole and the fracture of the pin part due to stress concentration and rigid interference.
Description
Technical Field
The utility model relates to the technical field of auto-parts, in particular to fisheye terminal and connector.
Background
Along with the rapid development of electronic information technology and the continuous change of automobile manufacturing industry, the combination of the automobile industry and the electronic information technology is increasingly compact, meanwhile, various electric control actuators are also frequently applied to automobiles, the interconnection of current or signals among the actuators is realized through connectors, and the preset function of a circuit is completed. The existing connection modes for conducting signals are generally divided into a welded connection mode and a solderless connection mode, but the use of the solderless connection technology is undoubtedly one of the most effective methods for transmitting signals to an actuator quickly and conveniently, and meanwhile, the connection modes have positive influences on environmental pollution reduction and economy of raw material cost.
The combination of the press-fit terminal and the PCB (circuit board) is a connection mode without welding points, the connection mode can reduce the use of scaling powder and avoid the adverse reaction when the mainboard is in a high-temperature tin furnace, and the press-fit terminal can be simply pulled out and replaced. Because the problem of soldering tin such as empty soldering is avoided, the electric reliability of the electric connector is high, and the electric connector is widely applied to industries such as communication, vehicle-mounted electronic products and the like.
The fisheye terminal is one type of a press-fit terminal and comprises an assembling part, and the assembling part is extruded to elastically contract so that the fisheye terminal is smoothly inserted into the through hole of the circuit board, and therefore the fisheye terminal is electrically connected with the circuit board. The fisheye terminal has the advantages of convenient assembly with the circuit board, no need of welding, replaceability, capability of matching with a smaller conductive jack on the circuit board and the like, thereby being widely applied,
however, the conventional fisheye terminal is prone to breaking of the assembly portion due to excessive stress during assembly, and in addition, the conventional fisheye terminal is prone to breaking of the root portion due to excessive vibration during application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fisheye terminal and connector to solve current fisheye terminal and easily split and assemble the problem that the back root easily takes place the broken needle phenomenon after accomplishing in assembling process assembly portion. Relaxation of
In order to solve the technical problem, the utility model provides a fisheye terminal, fisheye terminal includes basal portion, assembly portion and pin portion, assembly portion includes two elastic component, elastic component is circular-arc and two the elastic component sets up in opposite directions, every the one end of elastic component with the basal portion links to each other, every the other end of elastic component with the pin portion links to each other, the width of the both ends face of assembly portion equals, the maximum cross section width of pin portion is less than the minimum cross section width of assembly portion, fisheye terminal still includes the fisheye hole, the fisheye hole is from two extend to between the elastic component in the pin portion.
Optionally, in the fisheye terminal, a cross-sectional width of the pin portion is gradually reduced from a first end to a second end, wherein the first end is closer to the mounting portion than the second end.
Optionally, in the fisheye terminal, the second end of the pin portion is in a shape of a quadrangular frustum pyramid.
Optionally, in the fisheye terminal, an outer side surface of a joint between the base portion and the elastic member is arc-shaped, and an outer side surface of a joint between the elastic member and the pin portion is arc-shaped.
Optionally, in the fisheye terminal, a center of the fitting portion and a center of the fisheye hole do not coincide with each other, and a certain offset exists. Optionally, in the fisheye terminal, a maximum cross-sectional width of the fitting portion is 1.10mm to 1.20 mm.
Optionally, in the fisheye terminal, a cross-sectional width of an end of the base connected to the fitting portion is smaller than or equal to a minimum cross-sectional width of the fitting portion.
The utility model also provides a connector, connector include the circuit board and as above the fisheye terminal, the circuit board has the through-hole, the fisheye terminal passes through the through-hole with the circuit board is to inserting the connection, the diameter of through-hole is less than or equal to the minimum cross section width of assembly portion, and is greater than the pin portion reaches the maximum cross section width of basal portion.
Optionally, in the connector, the width of both end surfaces of the fitting portion and the diameter of the through hole are both 0.97mm to 1.07 mm.
Optionally, in the connector, the connector further includes a copper bar, and the copper bar is connected with the base.
The utility model provides an among fisheye terminal and connector, fisheye terminal includes basal portion, assembly portion, pin portion and fisheye hole, the connector includes fisheye terminal and circuit board. The fisheye terminal is inserted into the through hole of the circuit board through the pin part, and then is connected with the circuit board in an opposite insertion mode through the assembling part. In addition, after the assembly of the fisheye terminal and the circuit board is completed, one end of the fisheye hole close to the base part is positioned below the top surface of the circuit board, so that the structural strength of the assembly part after assembly is enhanced, the root of the assembly part is prevented from being broken in the working process, and a certain offset exists because the center of the assembly part is not coincident with the center of the fisheye hole, so that the stress distribution is uniform, and the occurrence of a relaxation phenomenon in the application process can be prevented.
Drawings
Fig. 1 is a schematic structural diagram of a fisheye terminal according to an embodiment of the invention;
fig. 2 is a schematic view of a connection relationship between a connector and a terminal according to an embodiment of the present invention;
fig. 3-6 are schematic views of the assembly process of the connector according to the embodiment of the present invention.
Wherein the reference numerals are as follows:
1-fisheye terminal, 11-base part, 12-assembly part, 13-pin part, 14-fisheye hole, 121-elastic part, 2-circuit board, 101-through hole and 4-connecting terminal.
Detailed Description
As described above, the conventional fish-eye terminal is liable to break the fitting portion due to excessive stress during the fitting process, because: generally, when the mounting portion of the fish-eye terminal contacts the through hole of the circuit board, stress begins to be generated, and when the mounting portion of the conventional fish-eye terminal contacts the through hole of the circuit board, one end of the pin portion of the fish-eye terminal, which is close to the fish-eye terminal, is located on the same plane as or above the upper surface of the circuit board, so that the stress is too large. Simultaneously, current fisheye terminal easily leads to the root to take place the broken needle phenomenon because of the vibration volume is too big in the application, this is because: with the existing fisheye terminal, after the assembly is completed, one end of the fisheye close to the base is located above the top surface of the circuit board, so that the assembly part is highly compressed. In addition, the existing fisheye terminal is easy to loosen during the application process, because: stress distribution is concentrated after the existing fisheye terminal is assembled.
The event the utility model aims at providing a fisheye terminal is through the relative position who changes fisheye hole and assembly portion and pin portion to solve current fisheye terminal and easily break, assemble and accomplish the problem that the back root easily takes place the phenomenon of split and the easy phenomenon of lax of taking place of application in assembly process assembly portion.
The fisheye terminal provided by the invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
Referring to fig. 1, the fisheye terminal 1 of the present embodiment includes: the fisheye terminal 1 comprises a base part 11, an assembling part 12 and a pin part 13, wherein the assembling part 12 comprises two elastic pieces 121, the elastic pieces 121 are arc-shaped, the two elastic pieces 121 are symmetrically arranged, one end of each elastic piece 121 is connected with the base part 11, the other end of each elastic piece 121 is connected with the pin part 13, the widths of two end faces of the assembling part 12 are equal, the maximum cross-sectional width of the pin part 13 is smaller than or equal to the minimum cross-sectional width of the assembling part 12, the fisheye terminal 1 further comprises a fisheye hole 14, and the fisheye hole 14 extends into the pin part 13 from between the two elastic pieces 121.
Referring to fig. 3 and 4, the fisheye terminal 1 is inserted into a through hole of a circuit board through the pin portion 13, and then is connected to the circuit board through the mounting portion 12. Stress starts to be generated when the fitting portion 12 contacts with a through hole, and since the eyelet 14 of the eyelet terminal 1 provided in this embodiment extends from between the two elastic members 121 into the pin portion 13, the eyelet 14 is partially located in the through hole when the fitting portion 12 contacts with the through hole, so that it is possible to prevent stress concentration and rigid interference from damaging the through hole and causing the pin portion 13 to break.
Furthermore, in this embodiment, the center of the fitting portion and the center of the fish-eye hole are not coincident, and there is a certain offset, that is, the center line of the fitting portion and the center line of the fish-eye hole in the width direction are not on the same straight line, and/or the center line of the fitting portion and the center line of the fish-eye hole in the length direction are not on the same straight line, so that the stress distribution is uniform, and the occurrence of the relaxation phenomenon in the application process can be prevented.
In addition, this embodiment is preferred the cross section width of pin portion 13 reduces from first end to second end gradually, wherein, first end is compared the second end is close to assembly portion 12, just pin portion 13 the second end is the quadrangular frustum of a prism form, so as to do benefit to fisheye terminal 1 is accurate location in the assembling process, the pre-compaction of being convenient for, reduces the destruction of pre-compaction process to copper foil in the through-hole simultaneously.
Meanwhile, in this embodiment, it is preferable that the cross-sectional width of the end of the base portion 11 connected to the fitting portion 12 is smaller than or equal to the minimum cross-sectional width of the fitting portion 12, and the outer side surface of the joint between the base portion 11 and the elastic member 121 is arc-shaped, so that the base portion 11 and the elastic member 121 smoothly transition, and the outer side surface of the joint between the elastic member 121 and the pin portion 13 is arc-shaped, so that the elastic member 121 and the pin portion 13 smoothly transition, and thus, the copper foil in the through hole can be prevented from being scratched by the corner at the outer side of the joint in the assembling process.
The maximum cross-sectional width of the fitting portion 12 is 1.10mm to 1.20mm, and may be 1.10mm, 1.15mm, or 1.20mm, for example. Since the elastic member 121 has a circular arc shape and the widths of both end surfaces of the fitting portion 12 are equal, the fitting portion 12 is symmetrical about the center, and the cross section having the maximum width is located at the center of the fitting portion 12, and the cross section width gradually decreases from the center of the fitting portion 12 to the end surface of the fitting portion 12.
Referring to fig. 2, according to the fisheye terminal 1 provided by the embodiment, the embodiment further provides a connector, the connector includes a circuit board 2 and the fisheye terminal 1, the circuit board 2 has a through hole 101, the fisheye terminal 1 is inserted and connected with the circuit board 2 through the through hole 101, and a diameter of the through hole 101 is smaller than or equal to a minimum cross-sectional width of the mounting portion 12 and is larger than maximum cross-sectional widths of the pin portion 13 and the base portion 11.
Since the diameter of the through hole 101 is greater than the maximum cross-sectional width of the pin portion 13 and the base portion 11, after the fisheye terminal 1 is connected with the circuit board 2 in a butt-plug manner, one end of the fisheye hole 14 close to the base portion 11 is located below the top surface of the circuit board 2, so that the structural strength of the assembly portion 12 after assembly is enhanced, and the root of the assembly portion 12 can be prevented from being broken off in the working process.
Specifically, the width of both end surfaces of the fitting portion 12 and the diameter of the through hole 101 are 0.97mm to 1.07mm, and may be, for example, 0.97mm, 1.02mm, or 1.07 mm. More specifically, for example, when the width of both end surfaces of the fitting portion 12 and the diameter of the through hole 101 are 1.02mm, the maximum cross-sectional width of the corresponding fitting portion 12 may be 1.2mm, and the width of the end surface of the pin portion 13 away from the fitting portion 12 may be 0.76 mm.
After the assembly part 12 of the fisheye terminal 1 is inserted into the through hole 101 of the circuit board 2, the minimum cross-sectional width of the assembly part 12 is larger than the diameter of the through hole 101, so that the assembly part 12 is pressed to deform inward, sufficient contact pressure and positive pressure are generated to ensure that the fisheye terminal 1 and the circuit board 2 keep reliable and stable contact, and small contact resistance is generated between the fisheye terminal 1 and the circuit board 2 to meet good conduction of current or signals.
Optionally, the connector further includes a copper bar 3, and the copper bar 3 is connected with the base 11. On the premise that the current signal between the fisheye terminal 1 and the circuit board 2 is well conducted, the signal is transmitted to the wiring terminal 4 through the transmission of the copper bar 3, and therefore the function of a product is achieved.
The assembly process of the fisheye terminal 1 and the circuit board 2 is divided into four stages as a whole, and the assembly process will be described in detail with reference to fig. 3 to 6.
(1) Stage of pre-pressing
As shown in fig. 3, in the pre-pressing stage, the pin portion 13 of the fisheye terminal 1 starts to enter the through hole 101 of the circuit board 2, and at this time, the mounting portion 12 does not contact the through hole 101 and is not deformed, and there is no contact pressure or positive pressure between the fisheye terminal 1 and the through hole 101.
(2) Initial pressing-in phase
As shown in fig. 4, the fisheye terminal 1 is pressed in continuously, the fitting part 12 of the fisheye terminal 1 starts to contact the through hole 101 of the circuit board 2, and since the minimum cross-sectional width of the fitting part 12 is greater than or equal to the diameter of the through hole 101, stress starts to be generated when the fisheye terminal 1 starts to contact the through hole 101, but since the plane of the bottom end of the fisheye hole 14 is lower than the top surface of the circuit board 2 when the fitting part 12 contacts the through hole 101, stress concentration and rigid interference can be avoided to damage the through hole 101 and cause the pin part 13 to break. Further, as the amount of interference increases with an increase in the press-fitting depth, the fitting portion 12 is elastically deformed, and the press-fitting force increases until it reaches the first peak.
(3) Continued pressing-in phase
As shown in fig. 5, the fisheye terminal 1 is further pressed in, the contact length of the fitting portion 12 with the through hole 101 of the circuit board 2 further increases, the amount of interference further increases, and the pressing force reaches the second peak.
(4) Hold phase
As shown in fig. 6, the fisheye terminal 1 is pressed to the designated position of the through hole 101 of the circuit board 2 and then enters a holding stage, the pressing force is not increased at this stage, and one end of the fisheye hole 4 close to the base 11 is located below the top surface of the circuit board 2 at this stage, so that the root of the assembling portion 12 can be prevented from being broken during the working process, and meanwhile, because the center of the assembling portion 12 and the center of the fisheye hole 14 are not coincident, a certain offset exists, so that the stress distribution is uniform, and the occurrence of the relaxation phenomenon can be prevented.
To sum up, the utility model provides a fisheye terminal and connector has solved current fisheye terminal and has easily taken place lax problem easily in assembly process assembly portion easily splits, the assembly completion back root easily takes place disconnected needle phenomenon and the application.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (10)
1. The utility model provides a fisheye terminal, its characterized in that, fisheye terminal includes basal portion, assembly part and pin portion, assembly part includes two elastic component, the elastic component is circular-arc and two the elastic component symmetry sets up, every the one end of elastic component with the basal portion links to each other, every the other end of elastic component with the pin portion links to each other, the width of the both ends face of assembly part equals, the biggest cross section width of pin portion is less than or equal to the minimum cross section width of assembly part, fisheye terminal still includes the fisheye hole, the fisheye hole is from two extend to between the elastic component in the pin portion.
2. The fisheye terminal of claim 1 wherein the cross-sectional width of the pin portion decreases from a first end to a second end, wherein the first end is closer to the mounting portion than the second end.
3. The fisheye terminal of claim 2 wherein the second end of the pin portion is in the shape of a truncated pyramid.
4. The fisheye terminal of claim 1 wherein the outer surface of the connection between the base and the resilient member is arcuate and the outer surface of the connection between the resilient member and the pin portion is arcuate.
5. The fisheye terminal of claim 1 wherein the center of the mounting portion and the center of the fisheye are offset.
6. The fisheye terminal of claim 1 wherein the mounting portion has a maximum cross-sectional width of 1.10mm to 1.20 mm.
7. The fisheye terminal of claim 1 wherein the end of the base portion connected to the mounting portion has a cross-sectional width less than or equal to the minimum cross-sectional width of the mounting portion.
8. A connector, comprising a circuit board and a fisheye terminal according to any one of claims 1-7, wherein the circuit board has a through hole, the fisheye terminal is inserted into the circuit board through the through hole, and the diameter of the through hole is smaller than or equal to the minimum cross-sectional width of the fitting portion and larger than the maximum cross-sectional widths of the pin portion and the base portion.
9. The connector according to claim 8, wherein the width of both end surfaces of the fitting portion and the diameter of the through hole are 0.97mm to 1.07 mm.
10. The connector of claim 8, further comprising a copper bar, the copper bar being connected to the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920862229.4U CN210111078U (en) | 2019-06-10 | 2019-06-10 | Fisheye terminal and connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920862229.4U CN210111078U (en) | 2019-06-10 | 2019-06-10 | Fisheye terminal and connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210111078U true CN210111078U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920862229.4U Active CN210111078U (en) | 2019-06-10 | 2019-06-10 | Fisheye terminal and connector |
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| CN (1) | CN210111078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488826A (en) * | 2021-06-28 | 2021-10-08 | 浙江普兴电子科技有限公司 | V-shaped fisheye terminal forming equipment and V-shaped fisheye terminal formed by using same |
-
2019
- 2019-06-10 CN CN201920862229.4U patent/CN210111078U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488826A (en) * | 2021-06-28 | 2021-10-08 | 浙江普兴电子科技有限公司 | V-shaped fisheye terminal forming equipment and V-shaped fisheye terminal formed by using same |
| CN113488826B (en) * | 2021-06-28 | 2023-10-27 | 浙江普兴电子科技有限公司 | V-shaped fish-eye terminal forming equipment and V-shaped fish-eye terminal formed by using same |
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