Terminal and connector
By designing the terminals of the double-layer structure and using laser welding technology, the problem of clamping force failure of the single-layer terminal structure of the wire-end connector after multiple insertion and removal is solved, which improves the conductivity and stability and extends the service life.
Patent Information
- Application Number
- CN202420132641.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-18
AI Technical Summary
The single-layer terminal structure of existing wire-end connectors is likely to cause clamping force failure during multiple plug-ins and pull-outs, resulting in poor contact and affecting the working stability of the connector.
A double-layer structure terminal is designed, the inner layer terminal has a first clamping part and a second clamping part, and the outer layer terminal is connected to the inner layer terminal to form a clamping structure, and the connection is strengthened by laser welding to prevent the inner layer from being prevented. The terminals are over-scaling.
Through the design of the double-layer structure and laser welding technology, the conductivity and working stability are improved, the service life is extended, and the problem of poor contact is avoided.
Smart Images
Figure CN222146632U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of connectors, and in particular relates to a terminal and a connector. Background Art
[0002] The line end connector is a component used to connect electrical equipment or units to power / signal wires. It usually includes an insulating plastic shell and connecting terminals inside the insulating plastic shell.
[0003] In the prior art, the terminals of the wire end connectors are all single-layered, and are formed by bending a single layer of metal, and the wire end and the mating end are clamped by the clamping force after bending, so that the wire end is connected by one end and the other end is matched with the mating end to achieve connection of the components; however, during use, the terminal and the mating end are often plugged in and unplugged many times, and only the single-layer terminal structure is matched with the mating end, which easily causes one end of the terminal that cooperates with the mating end to expand excessively, and the clamping force of the terminal on the mating end fails, resulting in the problem of invalid contact between the terminal and the mating end, affecting the working stability of the connector. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, the utility model provides a terminal and a connector to solve the problem in the prior art that only a single-layer terminal structure is used to mate with a mating end, which easily causes one end of the terminal to mate with the mating end to expand excessively, resulting in invalid contact between the terminal and the mating end.
[0005] One embodiment of the present invention provides a terminal, comprising:
[0006] The inner terminal is provided with a first clamping portion and a second clamping portion, wherein the first clamping portion is used to connect the conductive pin, and the second clamping portion is used to connect the wire end;
[0007] The outer terminal is sleeved with the first clamping portion to form a double-layer structure terminal.
[0008] In one embodiment, a tightening portion is provided between the first clamping portion and the second clamping portion, and the inner diameter of the tightening portion is smaller than the inner diameter of the first clamping portion and the inner diameter of the second clamping portion; wherein the tightening portion is used to clamp the wire of the wire end.
[0009] In one embodiment, the first clamping portion has a clamping section and a first guiding section, the clamping section is used to clamp the conductive needle, the first guiding section is used to guide the conductive needle to the clamping section, and the first guiding section is also used to guide the first clamping portion into the outer terminal.
[0010] In one embodiment, the inner diameter of the clamping section is smaller than the inner diameter of the first guide section, and the clamping section and the conductive needle are interference fit.
[0011] In one embodiment, a plurality of strip-shaped notches are arranged in a circular array of the clamping segments.
[0012] In one embodiment, the second clamping portion is provided with a limiting segment and a second guiding segment, the limiting segment is used to limit the wire end, two ends of the tightening portion are respectively connected to the first clamping portion and the second guiding segment, and the second guiding segment is used to guide the wire of the wire end from the limiting segment to the tightening portion, so that the wire of the wire end is electrically connected to the conductive pin through the inner terminal.
[0013] In one embodiment, a guide portion is provided at one end of the outer terminal, and a stop portion is provided at the other end of the outer terminal, wherein the guide portion is used to guide the first clamping portion from one end of the outer terminal into the outer terminal, and the stop portion is used to prevent the first clamping portion from extending from the other end of the outer terminal.
[0014] In one embodiment, the outer terminal is laser welded to the inner terminal, and the outer terminal is provided with a spot welding portion for laser welding.
[0015] In one of the embodiments, a limiting structure is further included, the first clamping portion is provided with a limiting portion, the limiting portion and the guiding portion are provided at the same end, and the limiting structure includes the limiting portion and the guiding portion, and the limiting structure is used to prevent the inner terminal and the outer terminal from falling off from the connector.
[0016] Another embodiment of the present invention further provides a connector, comprising any terminal as described above.
[0017] The terminal and connector provided by the above embodiments of the utility model have the following beneficial effects:
[0018] The conductive pin is clamped by the first clamping part of the inner terminal, the wire end is connected by the second clamping part, and the outer terminal is enclosed by the first clamping part to form a double-layer structure terminal. The outer terminal can prevent the inner terminal from being fatigued and ineffectively contacted due to excessive expansion when mating with the mating end, thereby improving conductivity and working stability and extending service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0020] Figure 1 A schematic diagram of the structure of a terminal provided in an embodiment of the utility model;
[0021] Figure 2 for Figure 1 Schematic diagram of the connection structure between the inner layer terminals and the conductive pins and the wire ends;
[0022] Figure 3 for Figure 1 A schematic diagram of the connection structure between the inner layer terminals and the outer layer terminals;
[0023] Figure 4 for Figure 3 A three-dimensional schematic diagram of the connection structure between the inner layer terminal and the outer layer terminal;
[0024] Figure 5 for Figure 1 A schematic diagram of the structure of the inner terminal in FIG.
[0025] Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure of the inner terminal;
[0026] Figure 7 for Figure 1 A schematic diagram of the structure of the outer terminal in FIG.
[0027] Figure 8 for Figure 7 Schematic diagram of the three-dimensional structure of the outer terminal.
[0028] Description of the drawings: 110, inner terminal, 111, first clamping portion, 111-1, clamping section, 111-11, notch, 111-2, first guide section, 111-21, first guide position, 111-22, second guide position, 111-3, limit portion, 112, second clamping portion, 112-1, limit segment, 112-2, second guide segment, 113, tightening portion,
[0029] 120, outer terminal, 121, guide portion, 122, stop portion, 123, spot welding portion,
[0030] 130. conductive needle, 140. wire end, 141. wire. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0034] See also Figure 1-8 One embodiment of the present invention provides a terminal, comprising:
[0035] The inner terminal 110 is provided with a first clamping portion 111 and a second clamping portion 112, wherein the first clamping portion 111 is used to clamp the conductive pin 130, and the second clamping portion 112 is used to connect the wire terminal 140;
[0036] The outer terminal 120 is sleeved with the first clamping portion 111 to form a double-layer structure terminal.
[0037] In this embodiment, the conductive pin 130 is clamped by the first clamping portion 111 of the inner terminal 110, the second clamping portion 112 is connected to the wire end 140, and the outer terminal 120 is connected to the outer sleeve of the first clamping portion 111 to form a double-layer structure terminal. The outer terminal 120 can prevent the inner terminal 110 from excessively expanding when mating with the mating end, causing fatigue and ineffective contact, thereby improving conductivity and working stability and extending service life.
[0038] The inner terminal 110 and the outer terminal 120 are both made of metal in one piece. Specifically, the inner terminal 110 is made of copper alloy, which has good elasticity and conductivity; the outer sleeve is made of stainless steel. The two materials are connected by laser spot welding, and the welding is reliable.
[0039] See also Figure 3-6 In one embodiment, a tightening portion 113 is provided between the first clamping portion 111 and the second clamping portion 112, and the inner diameter of the tightening portion 113 is smaller than the inner diameter of the first clamping portion 111 and the inner diameter of the second clamping portion 112; wherein the tightening portion 113 is used to clamp the wire 141 of the wire end 140, so that when power is turned on, the tightening portion 113 is electrically connected to the wire 141, thereby electrically connecting the conductive needle 130 to the wire end 140 through the inner terminal 110.
[0040] In this embodiment, a tightening portion 113 is provided between the first clamping portion 111 and the second clamping portion 112, and the wire 141 of the wire end 140 is clamped by the clamping portion, so that the conductive needle 130 is electrically connected to the wire end 140 through the inner terminal 110, and the stability of the inner terminal 110 is increased through the outer terminal 120.
[0041] See also Figure 5 , 6 In one embodiment, the first clamping portion 111 has a clamping section 111-1 and a first guiding section 111-2, the clamping section 111-1 is used to clamp the conductive needle 130, and the first guiding section 111-2 is used to guide the conductive needle 130 and the first clamping portion 111, so as to guide the conductive needle 130 to the clamping section 111-1, and guide the first clamping portion 111 to the outer terminal 120.
[0042] In this embodiment, the conductive needle 130 is guided to the clamping section 111-1 by the first guide section 111-2 so as to be clamped by the clamping section 111-1. At the same time, it can also be guided to the outer terminal 120 by the first guide section 111-2 so that the outer terminal 120 is arranged outside the first clamping portion 111 of the inner terminal 110, thereby enhancing the clamping effect on the conductive needle 130.
[0043] See also Figure 5 , 6In another embodiment, the first guide section 111-2 includes a first guide position 111-21 and a second guide position 111-22, and the first guide position 111-21 and the second guide position 111-22 are arranged at the end of the first clamping portion 111, and the first guide position 111-21 and the second guide position 111-22 include a chamfer setting. Exemplarily, the first guide position 111-21 is an inner chamfer, and the second guide position 111-22 is an outer chamfer. The double chamfer setting is achieved by the first guide position 111-21 and the second guide position 111-22. The conductive needle 130 is guided to the clamping section 111-1 by the first guide position 111-21, and the first clamping portion 111 is guided to the outer terminal 120 by the second guide position 111-22, thereby improving installation efficiency and production efficiency.
[0044] See also Figure 2 In one embodiment, the inner diameter of the clamping section 111 - 1 is smaller than the inner diameter of the first guiding section 111 - 2 .
[0045] In this embodiment, since the inner diameter of the first guide section 111 - 2 is larger than the inner diameter of the clamping section 111 - 1 , the clamping section 111 - 1 and the conductive pin 130 are interference fit, thereby achieving stable clamping of the conductive pin 130 to prevent loosening.
[0046] See also Figure 5 , 6 In one embodiment, the clamping section 111 - 1 is provided with a plurality of strip-shaped notches 111 - 11 in a circular array.
[0047] In this embodiment, a plurality of strip-shaped notches 111 - 11 are arranged in a circumferential array on the clamping section 111 - 1 to improve the resilience of the clamping section 111 - 1 and reduce the production cost.
[0048] The notch 111-11 is provided with a chamfer to prevent the inner terminal 110 from expanding and interfering with the outer terminal 120 after plugging in, causing difficulty in plugging and pulling out and elastic fatigue of the inner terminal 110. The clamping section 111-1 adopts a circular terminal with three straight faces matching the plug-in end.
[0049] See also Figure 2-6 In one embodiment, the second clamping portion 112 is provided with a limiting segment 112-1 and a second guiding segment 112-2, the limiting segment 112-1 is used to limit the wire end 140, the two ends of the tightening portion 113 are respectively connected to the first clamping portion 111 and the second guiding segment 112-2, the second guiding segment 112-2 is used to guide the wire 141 of the wire end 140 from the limiting segment 112-1 to the tightening portion 113, so that the wire 141 of the wire end 140 is electrically connected to the conductive needle 130 through the inner terminal 110.
[0050] In this embodiment, the first clamping portion 111 and the second guide section 112 - 2 are respectively connected by the tightening portion 113 , so as to achieve a fastened connection between the wire end 140 and the conductive needle 130 to prevent loosening.
[0051] See also Figure 7 , 8 In one embodiment, a guide portion 121 is provided at one end of the outer terminal 120, and a stop portion 122 is provided at the other end of the outer terminal 120. The guide portion 121 is used to guide the first clamping portion 111 from one end of the outer terminal 120 to the inside of the outer terminal 120, and the stop portion 122 is used to prevent the first clamping portion 111 from extending from the other end of the outer terminal 120.
[0052] In this embodiment, a guide portion 121 is provided at one end of the outer terminal 120 and a stop portion 122 is provided at the other end, so as to guide and limit the first clamping portion 111 of the inner terminal 110, thereby preventing the first clamping portion 111 from extending from the other end of the outer terminal 120 during assembly, thereby improving production efficiency and overall stability.
[0053] See also Figure 7 , 8 In one embodiment, the outer terminal 120 is laser welded to the inner terminal 110, and during laser welding, the laser does not penetrate the inner terminal 110, and the outer terminal 120 is provided with a spot welding portion 123 for laser welding with the inner terminal 110.
[0054] In this embodiment, a spot welding portion 123 is set on the outer terminal 120, wherein the spot welding portion 123 includes a through hole, and the outer terminal 120 and the inner terminal 110 are spot welded at the spot welding portion 123, thereby further strengthening the connection effect between the inner terminal 110 and the outer terminal 120.
[0055] See also Figure 2-8 In one embodiment, it also includes a limiting structure, the first clamping portion 111 is provided with a limiting portion 111-3, the limiting portion 111-3 and the guide portion 121 are provided at the same end, and the limiting structure includes the limiting portion 111-3 and the guide portion 121, and the limiting structure is used to prevent the inner terminal 110 and the outer terminal 120 from falling off from the connector.
[0056] In this embodiment, a limiting portion 111-3 is provided on the first clamping portion 111, and the limiting portion 111-3 and the guide portion 121 are provided at the same end. A limiting structure is formed by the limiting portion 111-3 of the first clamping portion 111 and the guide portion 121 of the second clamping portion 112 to prevent the inner terminal 110 and the outer terminal 120 from falling off from the connector when the double-layer structure terminal is placed in the connector.
[0057] Another embodiment of the present invention further provides a connector, comprising any terminal as described above.
[0058] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.
Claims
1. A terminal, characterized in that: include: The inner terminal is provided with a first clamping portion and a second clamping portion, wherein the first clamping portion is used to connect the conductive pin, and the second clamping portion is used to connect the wire end; The outer terminal is sleeved with the first clamping portion to form a double-layer structure terminal.
2. The terminal according to claim 1, characterized in that A tightening portion is provided between the first clamping portion and the second clamping portion, and the inner diameter of the tightening portion is smaller than the inner diameter of the first clamping portion and the inner diameter of the second clamping portion; wherein the tightening portion is used to clamp the wire of the wire end.
3. The terminal according to claim 2, characterized in that The first clamping portion has a clamping section and a first guiding section, the clamping section is used to clamp the conductive needle, the first guiding section is used to guide the conductive needle to the clamping section, and the first guiding section is also used to guide the first clamping portion into the outer terminal.
4. The terminal according to claim 3, characterized in that The inner diameter of the clamping section is smaller than the inner diameter of the first guide section, and the clamping section and the conductive needle are interference fit.
5. The terminal according to claim 3, characterized in that: The clamping section is provided with a plurality of strip-shaped notches in a circumferential array.
6. The terminal according to claim 2, characterized in that The second clamping portion is provided with a limiting section and a second guiding section, the limiting section is used to limit the wire end, the two ends of the tightening portion are respectively connected to the first clamping portion and the second guiding section, the second guiding section is used to guide the wire of the wire end from the limiting section to the tightening portion, so that the wire of the wire end is electrically connected to the conductive pin through the inner terminal.
7. The terminal according to claim 1, characterized in that A guide portion is provided at one end of the outer terminal, and a stop portion is provided at the other end of the outer terminal. The guide portion is used to guide the first clamping portion from one end of the outer terminal into the outer terminal, and the stop portion is used to prevent the first clamping portion from extending from the other end of the outer terminal.
8. The terminal according to claim 7, characterized in that The outer terminal is laser welded to the inner terminal, and the outer terminal is provided with a spot welding portion for laser welding.
9. The terminal according to claim 7, characterized in that It also includes a limiting structure, the first clamping portion is provided with a limiting portion, the limiting portion and the guiding portion are provided at the same end, and the limiting structure includes the limiting portion and the guiding portion, and the limiting structure is used to prevent the inner terminal and the outer terminal from falling off from the connector.
10. A connector, characterized in that: A terminal as claimed in any one of claims 1 to 9.