Electrical connection terminal and electrical connector

Abstract

The utility model relates to connector technical field, especially a kind of electric connection terminal and electric connector. The electric connection terminal has holding section, the first connecting end formed in the front end of holding section and the second connecting end formed in the rear end of holding section, the second connecting end is formed with accommodating cavity, the accommodating cavity has the cavity bottom wall close to the direction of front end and the cavity side wall formed around the cavity bottom wall perimeter, the rear end of the accommodating cavity is formed with first opening. The electric connector includes insulating body and electric connection terminal, the insulating body includes insulating core and the assembly slot formed in the rear end of the insulating core;The insulating core is formed with the plug-in cavity through the both ends of the insulating core along front-back direction, and the first connecting end of the electric connection terminal and the front end portion of holding section are plugged into the plug-in cavity;The plug is assembled in the assembly slot, and the plug has through-hole for the rear end portion of the holding section to pass through.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to an electrical connection terminal and an electrical connector. Background Technology

[0002] As a key component of electrical connectors, electrical terminals play the role of a connecting bridge, establishing a stable connection at points of blockage within a circuit or between independent circuits, thereby ensuring the smooth transmission of current or signals.

[0003] The electrical connection terminal mainly includes a retaining section fixed within the insulating body, a first connecting end formed at the front end of the retaining section, and a second connecting end formed at the rear end of the retaining section. Depending on the assembly method, the retaining section can be inserted into the insulating body or integrally injection molded into the insulating body. The first connecting end can be directly exposed outside the insulating body, or it can be located within the insulating body but needs to communicate with the outside through an opening to achieve mating with the electrical connector. The second connecting end can be soldered to a wire harness or a circuit board according to design requirements.

[0004] In the prior art, in order to isolate the first connection end from the second connection end and prevent solder from flowing into the first connection end and causing elastic failure, the electrical connection terminal is usually processed by turning and milling a whole piece of metal material on a lathe, retaining the solid closed structure between the first connection end and the second connection end. However, the turning and milling process is very expensive. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide an electrical connection terminal and an electrical connector.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing an electrical connection terminal, which is made of metal sheet by stamping, having a retaining section, a first connecting end formed at the front end of the retaining section and a second connecting end formed at the rear end of the retaining section, the second connecting end forming a receiving cavity, the receiving cavity having a cavity bottom wall near the front end and a cavity side wall formed around the periphery of the cavity bottom wall, and a first opening formed at the rear end of the receiving cavity.

[0007] Furthermore, the cavity sidewall has a second opening that extends through the cavity sidewall along its thickness direction and also extends rearward through the cavity sidewall, defining the cavity sidewall as a U-shaped cavity sidewall with a U-shaped cross-section.

[0008] Furthermore, with the direction of the second opening as upward, the front end of the upper edge of the U-shaped cavity sidewall is higher than its rear end, and the upper edge smoothly transitions from the front end to the rear end.

[0009] Furthermore, both the retaining section and the second connecting end are cylindrical structures, and the bottom wall of the cavity is formed by stamping from the outside to the inside through the outer wall of the second connecting end or the retaining section. The bottom wall of the cavity is used to prevent the internal spaces of the second connecting end and the retaining section from communicating with each other.

[0010] Furthermore, the outer wall of the retaining segment is formed with a first limiting protrusion; the first limiting protrusion is configured as a plurality of first limiting protrusions distributed at intervals along the circumference of the retaining segment, or is configured as a limiting protrusion ring distributed around the circumference of the retaining segment.

[0011] Furthermore, the first connecting end is configured to have at least two elastic arms, which enclose an elastic clamping space.

[0012] Furthermore, the first connecting end is configured as a cylindrical structure with a diameter that gradually decreases forward; the cylindrical structure has at least two dividing slits distributed along its circumference, each dividing slit extending forward through the cylindrical structure, the at least two dividing slits dividing the cylindrical structure to form the at least two elastic arms.

[0013] Furthermore, the front end of the elastic arm has an outwardly curved or bent flange, which encloses an opening that communicates with the elastic clamping space.

[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide an electrical connection terminal, including an insulating body and the electrical connection terminal described above.

[0015] Furthermore, the insulating body includes an insulating core and an assembly groove formed at the rear end of the insulating core; the insulating core has a plug cavity extending through both ends of the insulating core in a front-rear direction, and the first connecting end and the front end portion of the retaining section of the electrical connection terminal are inserted into the plug cavity; a plug is assembled in the assembly groove, the plug having a through hole for the rear end portion of the retaining section to pass through, and the second connecting end extends rearward through the through hole and is exposed outside the plug.

[0016] The electrical connection terminal and connector of this utility model have the following beneficial effects: The receiving cavity formed by the second connecting end of the electrical connector can surround the solder inside. The bottom wall of the receiving cavity blocks the mutual communication between the receiving cavity and the retaining section and the first connecting end. When the second connecting end is soldered to the connected object, it effectively prevents the solder from flowing out of the receiving cavity and effectively prevents the solder from flowing to the retaining section and the first connecting end. This avoids the problem of the elastic clamp of the first connecting end not being able to open normally due to solder, ensuring the connection performance of the first connecting end, improving the yield of the electrical connection terminal, and improving the yield of the assembled electrical connector. The second opening in the side wall of the receiving cavity facilitates the soldering work and improves the soldering efficiency. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the electrical connection terminal of this utility model.

[0019] Figure 2 This is a structural schematic diagram of an embodiment of the electrical connection terminal of this utility model.

[0020] Figure 3 This is a structural schematic diagram of an embodiment of the electrical connector of this utility model.

[0021] Figure 4 yes Figure 3 Sectional view of AA.

[0022] Figure 5 This is a schematic diagram of the structure of the insulating body in one embodiment of the electrical connector of this utility model.

[0023] Figure 6 This is a schematic diagram of the plug structure in one embodiment of the electrical connector of this utility model.

[0024] The diagrams in the instruction manual are labeled as follows:

[0025] Electrical connection terminal 100; first connection end 110; elastic arm 111; outward flange 111a; opening 111b; elastic clamping space 112; dividing slit 113; retaining section 120; first limiting protrusion 121; first limiting protrusion 121a; second connection end 130; receiving cavity 131; cavity bottom wall 131a; cavity side wall 131b; first opening 131c; second opening 131d;

[0026] Insulating body 200; insulating core 210; plug cavity 211; ring platform 212; limiting groove 213; weight reduction groove 214; assembly groove 220; second limiting protrusion 221; second limiting protrusion 221a; guide protrusion 222; plug 230; through hole 231; limiting step 232; guide mating groove 233. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0030] Please see Figure 1 and Figure 2 , Figure 1 and Figure 2 The electrical connection terminal 100 shown is a linear electrical connection terminal. The electrical connection terminal 100 includes a first connection end 110, a retaining section 120, and a second connection end 130, sequentially distributed along its central axis (linear direction). In this document, the orientation or location of the first connection end 110 is referred to as the front end or front, and the orientation or location of the second connection end 130 is referred to as the rear end or rear. The first connection end 110, the retaining section 120, and the second connection end 130 are distributed sequentially along the central axis from front to back. It should be understood that this does not mean that the electrical connection terminal 100 only has this shape. For example, in some embodiments, the electrical connection terminal 100 can also be a vertical electrical connection terminal, such as an L-shaped or curved electrical connection terminal 100. In this type of electrical connection terminal 100, its central axis is vertical or curved. In this type of electrical connection terminal 100, the first connection end 110 can also be considered as the front end, and the second connection end 130 as the rear end.

[0031] The retaining section 120 can be configured as a cylindrical structure having an internal space extending along its central axis. A first limiting protrusion 121 is formed on the outer wall of the retaining section 120. The first limiting protrusion 121 can be configured as a plurality of first limiting protrusions spaced apart circumferentially along the retaining section 120, such as three first limiting protrusions 121a, or as a limiting protrusion ring distributed circumferentially around the retaining section 120. The front and rear sides of the first limiting protrusions 121a are used to engage with limiting grooves provided within the insulating body of the electrical connector to achieve axial limiting of the electrical connection terminal 100 and the insulating body. When the first limiting protrusion 121 includes a plurality of first limiting protrusions 121a, it can also achieve circumferential limiting with a corresponding number of limiting grooves on the insulating body.

[0032] The first connecting end 110 extends forward from the front end of the retaining section 120. The first connecting end 110 has three elastic arms 111, which enclose an elastic clamping space 112 for the mating terminals to be elastically inserted into, thereby achieving electrical conduction between the two electrical connecting terminals 100. Similar to the retaining section 120, the first connecting end 110 may also be a cylindrical structure with a diameter that gradually decreases forward (in its natural state). The cylindrical structure has three dividing slits 113 distributed circumferentially, each dividing slit 113 penetrating forward through the cylindrical structure, dividing it to form the three elastic arms 111. Those skilled in the art will understand that the number "three" here should not be used to limit the protection scope of the electrical connecting terminal 100 of this utility model. In other embodiments, there may be more, such as four, five, or six, or fewer, such as two. The number of elastic arms 111 is at least two, so as to form an elastic clamping space 112.

[0033] In order to reduce the yielding amount of the elastic arm 111, reduce the fatigue damage rate of the elastic arm 111, and improve the long-term stability of the electrical connection terminal 100, the lateral width of each elastic arm 111 gradually decreases from back to front, that is, the gap of each partition seam gradually decreases from back to front, so that the overall diameter of the first connection end 110 gradually decreases from back to front, and the front end of the elastic clamping space 112 is in a constricted shape.

[0034] To enhance the connection performance of the first connecting end 110 and facilitate the insertion of the mating terminal, an outwardly curved or bent outer flange 111a can be formed at the end (front end) of each elastic arm 111. The outer flange 111a is forward and outwardly inclined or curved, so that all the outer flanges 111a enclose an opening 111b that communicates with the elastic clamping space 112 and has guiding or directional characteristics.

[0035] The second connecting end 130 extends rearward from the rear end of the retaining section 120. Similar to the retaining section 120, the second connecting end 130 can also be configured as a cylindrical structure. The second connecting end 130 forms a receiving cavity 131, which has a bottom wall 131a near the front end and a side wall 131b formed around the periphery of the bottom wall 131a. A first opening 131c is formed at the rear end of the receiving cavity 131. This structure facilitates soldering when the electrical connector is soldered to a connected object, such as a wire harness (the connected object is soldered within the receiving space). The receiving cavity 131 prevents solder from flowing out, and its bottom wall 131a acts as a barrier between the retaining section 120 and the second connecting end 130, preventing solder from flowing from the receiving space into the retaining section 120 and from flowing through the retaining section 120 into the first connecting end 110.

[0036] To facilitate welding of the second connecting end 130 to the connecting object, a second opening 131d can be formed in the cavity sidewall 131b. The second opening 131d extends through the cavity sidewall 131b along its thickness direction and also extends rearward through the cavity sidewall 131b, defining the cavity sidewall 131b as a U-shaped cavity sidewall 131b with a U-shaped cross-section. Taking the direction where the second opening 131d is located as upward, the front end height of the upper edge of the U-shaped cavity sidewall 131b is higher than its rear end height, and the upper edge smoothly transitions from the front end to the rear end.

[0037] In this embodiment, the second opening 131d does not extend forward through the cavity sidewall 131b of the second connecting end 130. Therefore, the receiving cavity 131 has a forward-distributed cylindrical cavity sidewall 131b and a rearward-distributed U-shaped cavity sidewall 131b. The cylindrical cavity sidewall 131b can block solder from the surrounding area during soldering, preventing solder from flowing out. The semi-enclosed U-shaped cavity sidewall 131b facilitates soldering.

[0038] For ease of processing and to optimize the processing technology, the cavity bottom wall 131a can be formed by stamping. That is, the cavity bottom wall 131a is formed by stamping the cylinder wall of the second connecting end 130 or the holding section 120 from the outside to the inside. The cavity bottom wall 131a is used to prevent the internal space of the second connecting end 130 and the holding section 120 from communicating with each other.

[0039] In this embodiment, the electrical connection terminal 100 can be formed by first processing each component on the material plate corresponding to the forming area of ​​each component, and then rolling the material plate into a cylindrical structure to form the electrical connection terminal 100. This facilitates the processing of the electrical connection terminal 100 and improves processing efficiency.

[0040] Please see Figures 3 to 6 , Figures 3 to 6 The structure of an electrical connector is shown. The illustrated electrical connector includes an insulating body 200 and the electrical connection terminals 100 described above. The insulating body 200 can be configured to include an insulating core 210 and a mounting groove 220 formed at the rear end of the insulating core 210.

[0041] The insulating core 210 has insertion cavities 211 extending through both ends of the insulating core 210 in a front-to-back direction. Each insertion cavity 211 corresponds to an electrical connection terminal 100, allowing the corresponding electrical connection terminal 100 to be inserted into it. For example, the first connecting end 110 and the front end portion of the retaining section 120 of the electrical connection terminal 100 are inserted into the insertion cavity 211. The front end diameter of the insertion cavity 211 is smaller than its inner diameter, forming a truncated ring 212 at the front end of the insertion cavity 211. This truncated ring 212 restricts the forward movement of the electrical connection terminal 100. A limiting groove 213 is provided at the rear end of the insertion cavity 211 corresponding to the position of the first limiting protrusion 121. Corresponding to the aforementioned plurality of, for example, three first limiting protrusions 121a, the insertion cavity 211 is correspondingly provided with a plurality of, for example, three limiting grooves 213. The limiting grooves 213 are formed by the outward recessing of the inner wall of the insertion cavity 211. The front sidewall of the limiting groove 213 forms a limiting surface for restricting the forward movement of the first limiting protrusions 121a. The limiting grooves 213 extend rearward through the insertion cavity 211 to facilitate the insertion of the first limiting protrusions 121a. This design facilitates the insertion of the electrical connection terminal 100 into the insertion cavity 211 and the accommodating of the first limiting protrusions 121a within the limiting grooves 213. The insulating core 210 is also provided with a plurality of weight-reducing grooves 214 or holes. These weight-reducing grooves 214 or holes not only achieve weight reduction of the electrical connector but also save raw materials and reduce costs.

[0042] The inner side of the assembly groove 220 is provided with a second limiting protrusion 221. The second limiting protrusion 221 can be configured as a plurality of second limiting protrusions 221a spaced apart around the inner circumferential surface of the assembly groove 220. Each second limiting protrusion 221a has a guide slope that gradually thickens from back to front and a plane connected to the front end of the guide slope. The front side of each second limiting protrusion 221a forms a limiting surface. The inner side of the assembly groove 220 is also provided with guide positioning parts distributed in the front-rear direction. The guide positioning parts can be guide protrusions 222 that protrude inward from the inner side of the assembly groove 220 or guide grooves that are recessed in the inner side of the assembly groove 220.

[0043] A plug 230 is fitted into the assembly groove 220. The plug 230 has a through hole 231 through which the rear end of the retaining section 120 passes. The second connecting end 130 extends rearward through the through hole 231 and is exposed outside the plug 230. The plug 230 also has a limiting step 232 for limiting and engaging with the second limiting protrusion 221. For example, the plug 230 is designed as a columnar structure with a larger diameter at the front and a smaller diameter at the rear, forming the limiting step 232 between the large and small diameter sections. This limiting step engages with the limiting surface of the second limiting protrusion 221a to prevent the plug 230 from moving backward. The outer circumferential surface of the plug 230 is provided with a guiding engagement part corresponding to the position of the guiding positioning part. The guiding engagement part can be a guiding engagement groove 233 corresponding to the guiding protrusion 222, or a guiding engagement protrusion corresponding to the guiding groove.

[0044] Based on the above embodiments, the electrical connection terminal and electrical connector of this utility model have the following beneficial effects: the receiving cavity formed by the second connecting end of the electrical connector can surround the solder inside. The bottom wall of the receiving cavity blocks the mutual communication between the receiving cavity and the retaining section and the first connecting end. When the second connecting end is soldered to the connected object, it effectively prevents the solder from flowing out of the receiving cavity and effectively prevents the solder from flowing to the retaining section and the first connecting end, avoiding the problem that the elastic clamp of the first connecting end cannot open normally due to solder, ensuring the connection performance of the first connecting end, improving the yield of the electrical connection terminal, and improving the yield of the assembled electrical connector. The second opening in the side wall of the receiving cavity facilitates the soldering work and improves the soldering efficiency.

[0045] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electrical connection terminal comprising a retaining section, a first connecting end formed at the front end of the retaining section, and a second connecting end formed at the rear end of the retaining section, characterized in that: The second connection end has a receiving cavity, the receiving cavity has a cavity bottom wall near the front end and a cavity side wall formed around the periphery of the cavity bottom wall, the rear end of the receiving cavity has a first opening, and the electrical connection terminal is made of metal sheet by stamping.

2. The electrical connection terminal as described in claim 1, characterized in that: The cavity sidewall has a second opening that extends through the cavity sidewall along its thickness direction and also extends rearward through the cavity sidewall, defining the cavity sidewall as a U-shaped cavity sidewall with a U-shaped cross-section.

3. The electrical connection terminal as described in claim 2, characterized in that: With the direction of the second opening as upward, the front end of the upper edge of the U-shaped cavity sidewall is higher than its rear end, and the upper edge smoothly transitions from the front end to the rear end.

4. The electrical connection terminal as described in claim 1, characterized in that: Both the retaining section and the second connecting end are cylindrical structures. The bottom wall of the cavity is formed by stamping from the outside to the inside through the outer wall of the second connecting end or the retaining section. The bottom wall of the cavity is used to prevent the internal spaces of the second connecting end and the retaining section from communicating with each other.

5. The electrical connection terminal as described in claim 1, characterized in that: The outer wall of the retaining section is formed with a first limiting protrusion; the first limiting protrusion is configured as a plurality of first limiting protrusions distributed at intervals along the circumference of the retaining section, or is configured as a limiting protrusion ring distributed around the circumference of the retaining section.

6. The electrical connection terminal as claimed in claim 1, characterized in that: The first connecting end is configured to have at least two elastic arms, which enclose an elastic clamping space.

7. The electrical connection terminal as described in claim 6, characterized in that: The first connecting end is configured as a cylindrical structure with a diameter that gradually decreases forward; the cylindrical structure has at least two dividing slits distributed along its circumference, each dividing slit extending forward through the cylindrical structure, the at least two dividing slits dividing the cylindrical structure to form the at least two elastic arms.

8. The electrical connection terminal as described in claim 6, characterized in that: The front end of the elastic arm has an outwardly curved or bent flange, which encloses an opening that communicates with the elastic clamping space.

9. An electrical connector, comprising an insulating body, characterized in that: It also includes electrical connection terminals as described in any one of claims 1 to 8.

10. The electrical connector as claimed in claim 9, characterized in that: The insulating body includes an insulating core and an assembly groove formed at the rear end of the insulating core; the insulating core has a plug cavity extending through both ends of the insulating core in a front-to-back direction, and the first connecting end of the electrical connection terminal and the front end portion of the retaining section are inserted into the plug cavity; a plug is assembled in the assembly groove, the plug having a through hole for the rear end portion of the retaining section to pass through, and the second connecting end extends rearward through the through hole and is exposed outside the plug.

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