Short thin small-pitch electrical connector

Abstract

The utility model provides a kind of short thin type small-pitch electric connector, it includes insulating body and several conductive terminals, the insulating body is lengthwise, and it has base portion and the butt joint protruding portion formed from the base portion forward, the butt joint protruding portion is formed with several interval parts in lengthwise direction interval arrangement, interval is formed between the contact surface of the conductive terminal of the outward exposure of plug-in slot between adjacent interval parts, the contact surface is recessed in the inside of interval part in the thickness direction of the insulating body, the conductive terminal is embedded in insulating body, each conductive terminal has in the thickness direction of the insulating body interval arrangement a pair of arm portion, the pair of arm portion is same direction extension and the extension length is different, the surface of the pair of arm portion set back to each other is formed a pair of the contact surface.The utility model short thin type small-pitch electric connector can reduce overall thickness, realize smaller pitch design, simple structure is stable and easy to make.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a short, thin, small-pitch electrical connector. Background Technology

[0002] Traditional electrical connectors typically include an insulating body and several conductive terminals fixed within the insulating body. Each conductive terminal has a pair of oppositely arranged sidewalls and a contact wall connected to the pair of sidewalls. The sidewalls and contact wall form a four-walled hollow structure. The conductive terminal is inserted between a pair of contact cantilever arms of a mating terminal to form an electrical connection. However, the four-walled structure of the conductive terminals requires a large space for housing and fixing, making it difficult to reduce the height and length dimensions of the electrical connector, and complicating its manufacturing and assembly.

[0003] In view of this, it is necessary to improve the existing electrical connectors to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a short and thin small-pitch electrical connector that can reduce the overall thickness, achieve a smaller pitch design, and has a simple structure and is easy to manufacture.

[0005] To achieve the above-mentioned utility model objectives, this utility model provides a short and thin small-pitch electrical connector, which includes an insulating body and a plurality of conductive terminals fixed within the insulating body. The insulating body is longitudinally elongated and has a base portion and a mating protrusion extending forward from the base portion. The mating protrusion has a plurality of spaced portions arranged at intervals in the longitudinal direction. Adjacent spaced portions are spaced apart to form insertion grooves that expose the contact surfaces of the conductive terminals to the outside. The contact surfaces are recessed in the thickness direction of the insulating body within the spaced portions. The conductive terminals are embedded in the insulating body. Each conductive terminal has a pair of arms spaced apart in the thickness direction of the insulating body. The pair of arms extend in the same direction but have different lengths. The surfaces of the pair of arms facing away from each other form a pair of contact surfaces.

[0006] As a further improvement of this utility model, the arm includes a first arm and a second arm, both of which extend along the mating direction of the electrical connector, and the extension length of the first arm is greater than the extension length of the second arm. The contact surface includes a first contact surface disposed on the first arm and a second contact surface disposed on the second arm.

[0007] As a further improvement of this utility model, the mating protrusion has a first surface and a second surface that are disposed opposite to each other in the thickness direction. A plurality of first positioning grooves are recessed on the first surface, and the two ends of the first arm in the longitudinal direction are partially exposed in the first positioning grooves.

[0008] As a further improvement of this utility model, a plurality of second positioning grooves are recessed on the second surface, and the two ends of the second arm in the longitudinal direction are partially exposed in the second positioning grooves.

[0009] As a further improvement of this utility model, both the first arm and the second arm are provided with protrusions on both sides in their longitudinal direction and necks arranged adjacent to the protrusions in front and behind. The necks of the first arm are at least partially exposed in the first positioning groove on both sides in the longitudinal direction, and the necks of the second arm are at least partially exposed in the second positioning groove on both sides in the longitudinal direction.

[0010] As a further improvement of this utility model, the neck on the first arm and the neck on the second arm are staggered in the docking direction, and the protrusions of the first arm and the second arm are staggered in the docking direction.

[0011] As a further improvement of this utility model, the mating protrusion is provided with a transverse groove extending along the longitudinal direction, and the transverse groove is connected to the first positioning groove.

[0012] As a further improvement of this utility model, the conductive terminal also has a connecting arm that connects the first arm and the second arm. The first arm and the connecting arm are connected in a U-shape. The first arm has a connecting surface at one end located in the docking direction. The connecting arm and the connecting surface are disposed opposite to each other at both ends of the first arm in the docking direction.

[0013] As a further improvement of this utility model, the insulating body also has a wiring portion located on the rear side of the base portion, and the first arm portion also has a connecting surface for connecting to a cable, the connecting surface being exposed to the wiring portion and disposed close to the connecting material surface.

[0014] As a further improvement of this utility model, the connecting surface and the first contact surface are respectively placed on two sides of the first arm portion that are opposite to each other in the thickness direction, and the wiring portion is recessed to form a third positioning groove that exposes the side of the first arm portion away from the connecting surface outward.

[0015] The beneficial effects of this utility model are as follows: The short and thin small-pitch electrical connector of this utility model embeds conductive terminals into the insulating body and sets the conductive terminals to have a pair of arms spaced apart in the thickness direction. The arms extend in the same direction but with different extension lengths, thereby greatly reducing the size of the insulating body in the thickness direction and lowering the overall height, perfectly meeting the ultra-thin requirements of modern electronic products. At the same time, by recessing the contact surface inside the spacer, crosstalk between adjacent conductive terminals can be reduced. Embedding the conductive terminals into the insulating body not only allows for precise fixing of the conductive terminals, reducing assembly space and tolerance accumulation, and meeting the requirements for smaller pitch applications, but also simplifies the process and reduces costs and tolerances. Attached Figure Description

[0016] Figure 1 This is a three-dimensional assembly diagram of the short, thin, small-pitch electrical connector of this utility model; Figure 2 yes Figure 1 Another view of the short, thin, small-pitch electrical connector shown; Figure 3 yes Figure 1 An exploded perspective view of the short, thin, small-pitch electrical connector shown. Figure 4 yes Figure 3 A perspective view of the conductive terminals of the short, thin, small-pitch electrical connector shown. Figure 5 yes Figure 4 A bottom view of the conductive terminals shown.

[0017] Figure 6 yes Figure 1 The image shows a cross-sectional view of a short, thin, small-pitch electrical connector. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0019] like Figures 1 to 6 As shown, this utility model provides a short and thin small-pitch electrical connector 100, which includes an insulating body 1 and a plurality of conductive terminals 2 fixed in the insulating body 1.

[0020] Please refer to Figures 1 to 3 and Figure 6As shown, the insulating body 1 is longitudinally elongated and has a base portion 11 and a mating protrusion 12 extending forward from the base portion 11. The mating protrusion 12 is provided with a plurality of spacer portions 121 arranged at intervals in the longitudinal direction. Adjacent spacer portions 121 are spaced apart to form insertion grooves 123 that expose the contact surface 201 of the conductive terminal 2 outward.

[0021] The contact surface 201 is recessed in the thickness direction of the insulating body 1 inside the spacer 121. The conductive terminal 2 is embedded in the insulating body 1. Each conductive terminal 2 has a pair of arms 21 spaced apart in the thickness direction of the insulating body 1. The pair of arms 21 extend in the same direction but have different lengths. The surfaces of the pair of arms 21 facing away from each other are formed as a pair of contact surfaces 201.

[0022] Specifically, the spacer portion 121 protrudes outward in the thickness direction of the insulating body 1 on the outer side of the contact surface 201 on the same side, so that the contact surface 201 is recessed in the thickness direction. In addition to accommodating the conductive terminal 2, the insertion groove 123 also accommodates the portion of the mating terminal that contacts the conductive terminal 2.

[0023] Thus, by embedding the conductive terminal 2 into the insulating body 1 and configuring the conductive terminal 2 as having a pair of arms 21 spaced apart in the thickness direction, with the arms 21 extending in the same direction but with different lengths, the size of the insulating body in the thickness direction is greatly reduced, and the overall height is lowered, perfectly meeting the ultra-thin requirements of modern electronic products (such as ultra-thin laptops, mobile phones, tablets, and VR devices). At the same time, by recessing the contact surface 201 inside the spacer 121, crosstalk between adjacent conductive terminals can be reduced. Embedding the conductive terminal 2 into the insulating body 1 not only allows for precise fixing of the conductive terminal 2, reducing assembly space and tolerance accumulation, and meeting the requirements for smaller spacing, but also simplifies the process and reduces costs and tolerances.

[0024] The arm portion 21 includes a first arm portion 211 and a second arm portion 212. Both the first arm portion 211 and the second arm portion 212 extend along the mating direction of the electrical connector 100, and the extension length of the first arm portion 211 is greater than the extension length of the second arm portion 212. The contact surface 201 includes a first contact surface 2011 disposed on the first arm portion 211 and a second contact surface 2012 disposed on the second arm portion 212.

[0025] Thus, by using the dual contact surfaces of the first contact surface 2011 and the second contact surface 2012 to work in parallel, the overall contact resistance is effectively reduced. Furthermore, the extension length of the first arm 211 is relatively long to facilitate the connection of cables or other components, while the extension length of the second arm 212 is relatively short to save materials and reduce production costs.

[0026] The mating protrusion 12 has a first surface 1201 and a second surface 1202 disposed opposite to each other in the thickness direction. A plurality of first positioning grooves 1203 are recessed on the first surface 1201. The two ends of the first arm 211 in the longitudinal direction are partially exposed in the first positioning grooves 1203.

[0027] Thus, by recessing a plurality of first positioning grooves 1203 on the first surface 1201 of the mating protrusion 12, the longitudinal side end of the first arm 211 is partially exposed in the first positioning groove 1203. This allows for precise lateral clamping and positioning of the first arm 211 in the longitudinal direction during the injection molding of the insulating body 1, preventing the first arm 211 from tilting or deflecting. It also enables the molten plastic to reliably bond with the side of the first arm 211. At the same time, it ensures that the first contact surfaces 2011 of the longitudinally arranged first arms 211 are at the same height, thereby ensuring a reliable electrical connection with the mating terminal.

[0028] Furthermore, a plurality of second positioning grooves 1204 are recessed on the second surface 1202, and the two ends of the second arm portion 212 in the longitudinal direction are partially exposed in the second positioning grooves 1204.

[0029] Thus, by recessing a plurality of second positioning grooves 1204 on the second surface 1202, the longitudinal side end of the second arm 212 is partially exposed within the second positioning grooves 1204. This allows for precise lateral clamping and positioning of the second arm 212 in the longitudinal direction during the injection molding of the insulating body 1, preventing tilting and deflection of the second arm 212. It also ensures reliable bonding between the molten plastic and the side of the second arm 212. Furthermore, it works in conjunction with the first positioning groove 1203 to achieve multi-directional constraint of the conductive terminal 2, providing manufacturing precision assurance for ultra-small pitch terminals.

[0030] The first arm portion 211 and the second arm portion 212 are each provided with protrusions 213 protruding on both sides in the longitudinal direction and necks 214 arranged adjacent to the protrusions 213. The necks 214 of the first arm portion 211 are at least partially exposed in the first positioning groove 1203 on both sides in the longitudinal direction, and the necks 214 of the second arm portion 212 are at least partially exposed in the second positioning groove 1204 on both sides in the longitudinal direction.

[0031] In this way, when the insulating body 1 is injection molded, the neck 214 can be accurately clamped to position the first arm 211 and the second arm 212, avoiding slippage or rotation during the transfer process, thus standardizing the automated feeding and mold placement actions and improving production efficiency; at the same time, the rear end face of the protrusion 213 can also abut against the positioning fixture, thereby ensuring the accuracy of the position of the conductive terminal 2 in the front-back direction, and thus ensuring the consistency of the front-back position of all conductive terminals 2.

[0032] The neck 214 on the first arm 211 and the neck 214 on the second arm 212 are staggered in the docking direction, and the protrusion 213 of the first arm 211 and the protrusion 213 of the second arm 212 are staggered in the docking direction.

[0033] Thus, by staggering the necks 214 of the first arm 211 and the second arm 212, the first arm 211 and the second arm 212 are clamped and fixed in a staggered manner, providing a simple, reliable, and high-precision clamping solution for automated production, while enhancing the strength and life of the mold; in addition, it can maximize the holding force of the conductive terminal 2 in the insulating body 1, and make the flow of the plastic melt in the cavity more stable and balanced, so that it can better wrap the conductive terminal 2.

[0034] The docking protrusion 12 is provided with a transverse groove 124 extending along the longitudinal direction, and the transverse groove 124 is connected to the first positioning groove 1203.

[0035] The conductive terminal also has a connecting arm 23 that connects the first arm 211 and the second arm 212. The first arm 211, the second arm 212 and the connecting arm 23 are connected in a U-shape. The first arm 211 has a connecting surface 2112 at one end located in the docking direction. The connecting arm 23 and the connecting surface 2112 are disposed opposite to each other at both ends of the first arm 211 in the docking direction.

[0036] The insulating body 1 also has a wiring portion 13 located on the rear side of the base portion 11, and the first arm portion 211 also has a connecting surface 2113 for connecting to a cable (not shown), the connecting surface 2113 being exposed to the wiring portion 13 and disposed near the connecting surface 2112.

[0037] The connecting surface 2113 and the first contact surface 2011 are respectively placed on both sides of the first arm portion 211 that are opposite to each other in the thickness direction. The wiring portion 13 is recessed and formed with a third positioning groove 131 that exposes the side of the first arm portion 211 away from the connecting surface 2113.

[0038] The first arm portion 211 also has a pair of lateral protrusions 2114 disposed near the connecting surface, the pair of lateral protrusions 2114 being embedded in the wiring portion 13; thereby effectively fixing the tail of the first arm portion 211 and preventing warping.

[0039] In summary, the short and thin small-pitch electrical connector 100 of this utility model greatly reduces the size of the insulating body in the thickness direction and lowers the overall height by embedding the conductive terminal 2 into the insulating body 1 and setting the conductive terminal 2 to have a pair of arms 21 spaced apart in the thickness direction. The arms 21 extend in the same direction but with different extension lengths, which perfectly meets the ultra-thin requirements of modern electronic products. At the same time, by recessing the contact surface 201 into the inner side of the spacing portion 121, crosstalk between adjacent conductive terminals can be reduced. Embedding the conductive terminal 2 into the insulating body 1 can not only accurately fix the conductive terminal 2, reduce assembly space and tolerance accumulation, and meet the use requirements of smaller pitch, but also simplify the process and reduce costs and tolerances.

[0040] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0041] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A short, thin, small-pitch electrical connector, comprising an insulating body and a plurality of conductive terminals fixed within the insulating body, the insulating body being longitudinally elongated and having a base portion and a mating protrusion extending forward from the base portion, the mating protrusion having a plurality of spaced portions spaced apart in the longitudinal direction, adjacent spaced portions forming insertion grooves that expose the contact surfaces of the conductive terminals to the outside, the contact surfaces being recessed in the thickness direction of the insulating body within the spaced portions, characterized in that: The conductive terminal is embedded in the insulating body, and each conductive terminal has a pair of arms spaced apart in the thickness direction of the insulating body. The pair of arms extend in the same direction but have different lengths, and the surfaces of the pair of arms facing away from each other form a pair of contact surfaces.

2. The short, thin, small-pitch electrical connector as described in claim 1, characterized in that: The arm includes a first arm and a second arm, both of which extend along the mating direction of the electrical connector, and the extension length of the first arm is greater than the extension length of the second arm. The contact surface includes a first contact surface disposed on the first arm and a second contact surface disposed on the second arm.

3. The short, thin, small-pitch electrical connector as described in claim 2, characterized in that: The mating protrusion has a first surface and a second surface that are disposed opposite to each other in the thickness direction. A plurality of first positioning grooves are recessed on the first surface, and the two ends of the first arm in the longitudinal direction are partially exposed in the first positioning grooves.

4. The short, thin, small-pitch electrical connector as described in claim 3, characterized in that: The second surface is recessed to form a plurality of second positioning grooves, and the two ends of the second arm in the longitudinal direction are partially exposed in the second positioning grooves.

5. The short, thin, small-pitch electrical connector as described in claim 4, characterized in that: Both the first arm and the second arm are provided with protrusions on both sides in their longitudinal direction and necks arranged adjacent to the protrusions in front and behind. The necks of the first arm are at least partially exposed in the first positioning groove on both sides in the longitudinal direction, and the necks of the second arm are at least partially exposed in the second positioning groove on both sides in the longitudinal direction.

6. The short, thin, small-pitch electrical connector as described in claim 5, characterized in that: The neck on the first arm and the neck on the second arm are staggered in the docking direction, and the protrusions of the first arm and the second arm are staggered in the docking direction.

7. The short, thin, small-pitch electrical connector as described in claim 3, characterized in that: The docking protrusion is provided with a transverse groove extending along the longitudinal direction, and the transverse groove is connected to the first positioning groove.

8. The short, thin, small-pitch electrical connector as described in any one of claims 2 to 7, characterized in that: The conductive terminal also has a connecting arm that connects the first arm and the second arm. The first arm and the connecting arm are connected in a U-shape. The first arm has a connecting surface at one end located in the docking direction. The connecting arm and the connecting surface are disposed opposite to each other at both ends of the first arm in the docking direction.

9. The short, thin, small-pitch electrical connector as described in claim 8, characterized in that: The insulating body also has a wiring portion located on the rear side of the base portion, and the first arm portion also has a connecting surface for connecting to a cable, the connecting surface being exposed to the wiring portion and disposed close to the connecting surface.

10. The short, thin, small-pitch electrical connector as described in claim 9, characterized in that: The connecting surface and the first contact surface are respectively located on two sides of the first arm portion that are opposite to each other in the thickness direction, and the wiring portion is recessed to form a third positioning groove that exposes the side of the first arm portion away from the connecting surface outward.

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