CN201994477U - power connector - Google Patents

Abstract

The utility model relates to a power connector, this power connector contain insulator, casing, first terminal and second terminal. One side of the insulating body forms an accommodating cavity, and the other side forms a plug-in groove. The shell covers the insulating body. The first terminal is arranged in the inserting groove of the insulating body. The first terminal has a first bump, a second bump and a butt joint portion. The second lug is far away from the butt joint part, a holding part is arranged between the first lug and the second lug, and the outer diameter of the holding part is larger than that of the first lug or the second lug. The second terminal is assembled in the plug slot and adjacent to the first terminal so as to receive the butting connector.

Description

power connector

【Technical field】

The utility model relates to a power connector, in particular to a power connector capable of stably holding a central terminal and saving assembly costs.

【Background technique】

A conventional electrical connector, especially a power connector, mainly includes an insulating body and terminals accommodated in the insulating body. The insulating body includes a receiving cavity extending backward from the front end and a terminal receiving groove recessed from the rear end and communicating with the receiving cavity. The terminal includes a central terminal, the central terminal has a holding portion fixed in the corresponding terminal receiving groove and a cylindrical contact portion extending and suspended in the receiving cavity. Since the contact portion of this type of central terminal is suspended and needs to bear a relatively large force from the mating connector matched with the electrical connector, the holding portion of the central terminal needs to be firmly held in the insulating body.

However, the central terminal of the conventional electrical connector either has insufficient holding force, or the holding portion of the central terminal is processed multiple times by equipment such as a numerical control lathe, or through various processes such as turning and stamping to ensure its holding force. Especially when the tail part of the central terminal extending from the holding part needs to be connected to the cable, in order to ensure that the cable is reliably welded to the tail part, the tail part needs to be processed, which increases the cost of processing the center terminal, which is not conducive to industrialization and market demand .

Based on the aforementioned prior art, it is indeed necessary to improve the previous electrical connectors.

The purpose of the utility model is to provide an electrical connector, the central terminal of which can be firmly held in the insulating body, which makes the processing convenient and low in cost.

【Content of utility model】

The purpose of the utility model is to provide a power connector with convenient processing and simple structure.

Another object of the present invention is to provide an electrical connector which saves assembly process and cost.

Another object of the present invention is to provide a power connector that is easy to combine the central terminal with the insulating body.

The utility model provides a power connector, which comprises an insulating body, a housing, a first terminal and a second terminal. One side of the insulating body forms a receiving cavity, and the other side forms an insertion slot. The casing covers the insulating body. The first terminal is arranged in the insertion slot of the insulating body. The first terminal has a first bump, a second bump and a butt joint. The second bump is disposed away from the abutting portion, and there is a holding portion between the first bump and the second bump, wherein the outer diameter of the holding portion is larger than the outer diameter of the first bump or the second bump. The second terminal is assembled in the socket and adjacent to the first terminal so as to receive the butt connector.

In a preferred embodiment, the power connector further includes a frame assembled on one side of the insulating body forming the receiving cavity, wherein a side edge of the frame has two corresponding buckling pieces and an opening corresponding to the receiving cavity. The first bump or the second bump is connected to the holding part, and the outline of the abutting part and the holding part includes a circular or circular section.

In a preferred embodiment, the outer diameter of the first bump or the second bump is greater than or equal to the outer diameter of the docking portion, and the appearance profile of the docking portion and the holding portion includes a circular or circular section.

In another preferred embodiment, one side of the second terminal further includes a first electrical connection part, and one side of the housing includes a second electrical connection part, and the first electrical connection part and the second electrical connection part The connection part is close to and located outside the socket slot to facilitate welding.

In another preferred embodiment, the second terminal further includes a pair of fitting parts, a connecting part and a pair of first elastic arms, the fitting part is embedded in the insertion groove, and the connecting part connects the pair of fitting parts respectively. The pair of first elastic arms extend from one side of each fitting portion.

In another preferred embodiment, the power connector further includes a cover body, the cover body is assembled on one side of the insulating body and covers the insertion slot, wherein the cover body has a second opening for the second protrusion to pass through .

The utility model also provides a power connector, which is characterized in that the power connector includes a plurality of cables, an insulating body, a first terminal, a second terminal and a housing. Each cable covers a core wire. One side of the insulating body forms a receiving cavity, and the other side forms a socket slot. The first terminal is arranged in the insertion groove of the insulating body, the first terminal has a first protrusion, a second protrusion and a pair of joint parts, the second protrusion is arranged away from the joint part, the first protrusion and the second protrusion There is a holding part between the blocks, wherein the outer diameter of the holding part is larger than the outer diameter of the first bump or the second bump. The second terminal is assembled in the slot and adjacent to the first terminal, and one side of the second terminal has a first electrical connection part. The casing covers the insulating body, and one side of the casing also has a second electrical connection portion corresponding to the first electrical connection portion, wherein the core wires are respectively electrically connected to the second bump and the first electrical connection portion and on the second electrical connection part.

In another preferred embodiment, the insulating body covers the holding portion, part of the first protrusion or the second protrusion, so as to limit the relative displacement of the first terminal.

【Description of drawings】

Figure 1 is a perspective view of the utility model power connector;

Figure 2 is an exploded view of the utility model power connector;

Fig. 3A is a side view of the utility model power connector;

Figure 3B is a sectional view of A-A of Figure 3A;

Fig. 4 is another embodiment diagram of the first terminal of the present invention;

Fig. 5 is a diagram of another embodiment of the power connector with a cover of the present invention;

The assembled sectional view of Fig. 6 or Fig. 5;

7 is a perspective view of the electrical connection cable of the power connector of the present invention; and

FIG. 8 is a perspective view of the power connector with sealing glue of the present invention.

【Detailed ways】

The utility model provides a power connector which can be tightly combined with a central terminal (namely the first terminal) and is easy to process. The power connector referred to herein is preferably a DC power jack connector. However, in other different embodiments, the power connector can also be an audio/video connector (Audio/Video Connector), an input/output (Input/Output (I/O) connector or other similar connectors.

As shown in FIGS. 1 and 2 , the present invention is a power connector 100 , which preferably includes an insulating body 110 , a housing 200 , a first terminal 300 and a second terminal 400 . However, in other different embodiments, the power connector 100 may only include the insulating body 110 , the first terminal 300 and the second terminal 400 . In the embodiment shown in FIG. 1 and FIG. 2 , the housing cavity 130 is formed on one side of the insulating body 110 , and the insertion groove 120 is formed on the other side. 3A and 3B at the same time, the first terminal 300 is assembled in the insertion groove 120 of the insulating body 110 from the direction of the receiving cavity 130, wherein the insertion groove 120 is for the mating connector (not shown) to be inserted. The assembly methods described here include insert molding or traditional mechanical assembly methods. The insertion slot 120 and the receiving cavity 130 are actually only empty slots connected to both sides of the insulating body 110. The insertion slot 120 is used for embedding the second terminal 400, and the receiving cavity 130 is used for inserting the butted connector (not shown in the figure). set to form an electrical connection. the

The two side walls of the insulating body 110 further have protruding positioning blocks 140 , and the two sides of the positioning block 140 also respectively form guide grooves 142 for engaging with the positioning clip grooves 230 of the housing 200 . In other words, the width of the guide groove 142 formed on both sides of the positioning block 140 is just similar to the width of the positioning clamp groove 230, so that the housing 200 can slide in the guide groove 142, and the left and right direction of the housing is positioned by the positioning block 140. displacement. The housing 200 also has a plurality of positioning springs 240 of different sizes for engaging with the corresponding positioning grooves 170 formed on the insulating body 110 , so as to position the displacement of the housing 200 in the front-back direction of the insulating body 110 . Therefore, the housing 200 is covered and positioned on the entire insulating body 110 by the above mechanism, so that the power connector 100 has the effect of shielding noise or other purposes. the

As shown in FIG. 2 , the first terminal 300 has a first bump 310 , a second bump 320 and an abutting portion 330 . The second protruding block 320 is disposed away from the abutting portion 330 , and there is a holding portion 340 between the first protruding block 310 and the second protruding block 320 . In this embodiment, the outlines of the first bump 310 , the second bump 320 , the abutting portion 330 and the holding portion 340 are all preferably annular or circular in section, and the outer diameter of the holding portion 340 is larger than that of the first bump 310 Or the outer diameter of the second bump 320 . The outer diameter of the first protrusion 310 is preferably similar to that of the abutting portion 330 . However, in the embodiment shown in FIG. 4 , the outer diameter of the first protrusion 310 may also be different from the outer diameter of the abutting portion 330 . the

As shown in FIG. 3A and FIG. 3B , the first terminal 300 is preferably held on one side of the insulating body 110 . In other words, the insulating body 110 engages with the first protrusion 310 , the holding portion 340 and part of the second protrusion 320 of the first terminal 300 to achieve the purpose of holding the first terminal 300 . In this embodiment, the insulating body 110 preferably completely covers the holding portion 340 and partially covers the first bump 310 and the second bump 320 , so as to limit the relative displacement of the first terminal 300 in the insulating body 110 . the

As shown in FIG. 2 , the retaining portion 340 preferably has a ring-shaped profile; however, in order to increase the retaining force with the insulating body 110, a plane, two corresponding planes, holes, embossing, grooves, irregular shapes or combinations thereof may also be provided. etc., change as needed. In the embodiment shown in FIG. 2 and FIG. 3B , the length of the abutting portion 330 is preferably longer than the total length from the holding portion 340 to the second protrusion 320 . However, the length of the first terminal 300 and the size allocation of each component can be changed as required, and there is no special limitation on the outer diameter of the butt joint portion 330 and the holding portion 340. the

Fig. 4 is a diagram of another embodiment of the first terminal of the present invention. In this embodiment, the first terminal 300 is integrally formed of conductive metal or alloy, and is preferably straight. The outer diameter of the first protrusion 310 or the second protrusion 320 is preferably smaller than the outer diameter of the abutting portion 330 and have the same axis. However, in other different embodiments, the first terminal 300 may also have two different axes. In other words, the first protrusion 310 and the holding portion 340 may not be located on the same axis as the second protrusion 320 and the abutting portion 330 . In addition, a notch 322 is further formed on one side of the second protrusion 320 for electrical connection with a cable (not shown). The slot 322 is preferably a slot dug from a part of the top of the second protrusion 320 toward the holding portion 340 . However, in other different embodiments, the notch 322 can also be a hole or other shapes penetrating through the second protrusion 320 . the

Also as shown in FIG. 2 , the second terminal 400 is assembled in the insertion slot 130 and adjacent to the first terminal 300 . The second terminal 400 has a pair of first elastic arms 410 , a fitting portion 420 extending from the pair of first elastic arms 410 , and a connecting portion 450 connecting the pair of first elastic arms 410 . In this embodiment, the connecting portion 450 is preferably connected to one side of each fitting portion 420 . The fitting part 420 is respectively engaged in the insulating housing 110 by the positioning block 422 provided on the protruding side wall of the fitting part 420 and the plurality of barb parts 426 on the side edge thereof. The pair of first elastic arms 410 are opposite to each other and protrude from the abutting portion 330 opposite to the first terminal 300 , as shown in FIG. 6 . the

In addition, the power connector 100 further includes a frame 500 assembled on one side of the insulating body 110 forming the receiving cavity 120 . The side edge of the frame 500 has two corresponding fastening pieces 510 and a first opening 520 corresponding to the receiving cavity 120 . The fastening piece 510 is directly bent from two sides of the frame 500 , and is formed with a fastening hole 512 for engaging with the fastening block 150 of the insulating body 110 to be fixed on the insulating body 110 . Please also refer to FIG. 6 , the frame 500 has a plurality of second elastic arms 530 bent on the periphery of the first opening 520 for early contact with the mating connector (not shown in the figure) (with a grounding function) and can increase its retention. force. the

As shown in FIG. 2 , FIG. 5 and FIG. 6 , one side of the second terminal 400 further includes a first electrical connection portion 430 , and one side of the housing 200 includes a second electrical connection portion 220 . When the first terminal 300, the second terminal 400 and the housing 200 are respectively arranged behind the insulating body 110, the first electrical connection part 430 is close to the second electrical connection part 220 and is located outside the socket, and is adjacent to the socket for example. The position in front of the connection slot 130 is convenient for electrical connection or welding with cables (not shown in the figure). the

In the embodiment shown in FIG. 5 and FIG. 6 , the first terminal 300 is preferably combined with the insulating body 110 by insert molding. When the first terminal 300 and the insulating body 110 are insert-molded, the second terminal 400 and the frame 500 are respectively assembled on both sides of the insulating body 110 . In this embodiment, the power connector 100 further includes a cover body 600, which is assembled on one side of the insulating body 110 and covers the hole formed after the second terminal 400 is assembled in the socket slot 130, so as to prevent subsequent manufacturing. There is sundry infiltrating into the product and affecting the transmission of telecommunication. the

It should be noted here that, when the cover body 600 is assembled before the insulating housing 110 , the first electrical connection portion 430 is parallel to the fitting portion 420 . After the cover 600 is assembled on the insulating body 110 , the first electrical connector 430 is bent again to fasten the cover 600 . In addition, the cover 600 is formed with a second opening 610 corresponding to the first terminal 300 and a plurality of holes 630 . The second opening 610 allows the first terminal 300 to pass through the cover 600 , and the hole 630 allows the protruding portion 470 of the second terminal 400 to engage and limit the relative displacement of the cover 600 . A plurality of wire slots 620 are formed on one side of the cover 600 for positioning of a plurality of cables (not shown). the

When the manufacturing process needs to assemble the cover 600, the metal shell 200 is finally assembled on the insulating body 110 toward the cover 600, and then the cable (not shown) is connected. On the contrary, if the cover body 600 is not required to be assembled, the electrical connection with the cable (not shown in the figure) can be performed, as shown in FIG. 1 . When the casing 200 is assembled on the insulating body 110 , the second electrical connection portion 220 of the casing 200 also has the effect of limiting the relative displacement of the cover 600 . the

As shown in FIG. 7 , after the cover 600 and the housing 200 are assembled respectively, the electrical connection of the cable 700 can be performed. The electrical connection referred to herein preferably generally refers to all connection methods related to welding technology. In the embodiment shown in FIG. 7 , the core wire 710 of the cable 700 is in contact with the second protrusion 320 (notch 322 ) of the first terminal 300 and the first electrical connection part 430 and the second electrical connection part respectively. After 220 surface, welding operation is carried out. The number of cables 700 is preferably a pair of cables; however, in other different embodiments, the number of welded cables 700 can also be only a single cable. The cable 700 is preferably made of Teflon wire, electric wire or other high temperature resistant electric wire. the

When welding the core wire 710 on the first terminal 300 or the first electrical connection part 430 (and the second electrical connection part 220), in order to prevent solder or other sundries from penetrating into the insertion groove 130 or the receiving cavity 120, it is necessary to The cover body 600 is provided to shield the gap generated during assembly. In addition, when the docking connector (not shown in the figure) is plugged into the power connector 100, the docking connector enters the receiving cavity 120 from the first opening 520 of the frame 500, and forms a joint with the docking portion 330 and the pair of second elastic arms 410. Internal and external electrical connections. The second elastic arm 530 of the frame 500 is first grounded with the mating connector and increases the holding force therebetween. the

In order to increase the strength of connecting/fixing the cable 700 to the power connector 100 , a low-pressure hot-melt adhesive 800 can be applied on the connecting surface of the cable 700 and the power connector 100 , as shown in FIG. 8 . The low-pressure hot-melt adhesive 800 is made of polyamide hot-melt adhesive, polyolefin-based or other similar hot-melt adhesives and encapsulated on the cover 600 . That is to say, the temperature of the low-pressure hot melt adhesive 800 is not higher than the melting point of the insulation body 110, the cover body 600 or the sheath of the cable 700, and the applied pressure is between 1.5-40 bar (bar), so as not to damage the power connector. 100 components and their connections. In this embodiment, the low-pressure hot melt adhesive 800 preferably covers the entire welding portion, that is, the welding portion between the cable 700 and the first terminal 300 or the first and second electrical connection portions 430 . the

While preferred embodiments of the present invention have been shown and described, it is envisioned that those skilled in the art can devise various modified embodiments of the present invention without departing from the spirit and scope of the appended claims. the

【Description of main component symbols】

100 power connector 110 insulating body

120 storage chambers 130 sockets

140, 422 positioning block 142 guide groove

150 fastening block 170 positioning groove

200 shell 220 second electrical connection part

230 positioning clip groove 240 positioning shrapnel

300 first terminal 310 first bump

320 second bump 322 lack of groove

330 docking part 340 holding part

400 second terminal 410 first elastic arm

420 chimeric part 426 barbed part

430 first electrical connection part 450 connection part

470 protrusions 500 frame

510 buckle tab 512 buckle hole

520 first opening 530 second elastic arm

600 cover body 610 second opening

620 trunking 630 holes

700 cable 710 core wire

800 hot melt adhesive

Claims (10)

1. a power connector is characterized in that, this power connector comprises:

One insulating body, a side of this insulating body forms a host cavity, and opposite side forms an inserting groove;

One housing, this housing coats this insulating body;

One the first terminal, this the first terminal is located in this inserting groove of this insulating body, this the first terminal has one first projection, one second projection and a docking part, this second projection is provided with away from this docking section, have a holding parts between this first projection and this second projection, wherein the external diameter of this holding parts is greater than the external diameter of this first projection or this second projection; And

One second terminal, this second terminal group are loaded in this inserting groove and are adjacent to this first terminal.

2. power connector as claimed in claim 1, it is characterized in that, this power connector also comprises a framework, and this frame set is loaded on the side of this insulating body that forms this host cavity, and wherein the lateral margin of this framework has two corresponding snapping sheets and to one first opening that should host cavity.

3. power connector as claimed in claim 1 is characterized in that, the external diameter of this first projection or this second projection is more than or equal to the external diameter of this docking section, and the appearance profile of this docking section and this holding parts comprises a ring-type or circular cross section.

4. power connector as claimed in claim 1, it is characterized in that, one side of this second terminal also comprises one first electrical junction, and a side of this housing then comprises one second electrical junction, and this first electrical junction is close with this second electrical junction and be positioned at outside this inserting groove.

5. power connector as claimed in claim 1, it is characterized in that, this second terminal also comprises a pair of fitting portion, a junction and a pair of first elastic arm, this fitting portion is embedded in this inserting groove, this connecting portion connects this respectively to the fitting portion edge, and this extends from a side of each this fitting portion first elastic arm.

6. power connector as claimed in claim 1 is characterized in that, this insulating body coats this holding parts, this first projection of part or this second projection, to limit the relative displacement of this first terminal.

7. power connector as claimed in claim 1 is characterized in that, this second projection forms a short slot in addition.

8. power connector as claimed in claim 1 is characterized in that this power connector comprises a lid in addition, and this lid is assembled on the side of this insulating body and covers this inserting groove, and wherein this lid has one second opening, passes for this second projection.

9. a power connector is characterized in that, this power connector comprises:

The plural number cable, each this cable coats a heart yearn;

One insulating body, a side of this insulating body forms a host cavity, and opposite side forms an inserting groove;

One the first terminal, this the first terminal is located in this inserting groove of this insulating body, this the first terminal has one first projection, one second projection and a docking part, this second projection is provided with away from this docking section, have a holding parts between this first projection and this second projection, wherein the external diameter of this holding parts is greater than the external diameter of this first projection or this second projection;

One second terminal, this second terminal group are loaded in this inserting groove and are adjacent to this first terminal, and a side of this second terminal has one first electrical junction; And

One housing, this housing coats this insulating body, and a side of this housing has one second electrical junction corresponding to this first electrical junction in addition,

Wherein this heart yearn is electrically connected on respectively on this second projection and this first electrical junction and this second electrical junction.

10. power connector as claimed in claim 9 is characterized in that, this insulating body coats this holding parts, this first projection of part or this second projection, to limit the relative displacement of this first terminal.

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