TWM647570U - Power plug with polarity matching assurance structure - Google Patents

Abstract

The invention provides a power connector with a polarity matching ensuring structure, including a body and an adapter. The body has a first coupling part, a first matching part and a first conductive terminal; and has a detachable second coupling part and the first coupling part. The adapter has a pair of second conductive terminals corresponding to the first conductive terminal. When the adapter is assembled to the body and the pair of first conductive terminals and the pair of second conductive terminals with the same polarity are opposite to each other, the first matching part can be aligned and matched with the second matching part. At this time, the second combination The first joint part can be combined with the first joint part to ensure that the polarity of the connector conductor matches.

Description

Power connector with polarity matching guaranteed structure

The invention provides a power connector, particularly a power connector with a polarity matching ensuring structure.

Currently, the power connectors used in commercially available electrical appliances are mainly provided with a pair of connector conductors (commonly in the form of sheets or columns) on the main body. The polarity of one of the pair of connector conductors is preset to match the live wire of the mains, while the polarity of the other connector conductor is preset to match the live wire of the mains. Set to match the ground wire of the mains power, the power plug can be inserted into the socket in a manner that matches the polarity of the mains power. Whether the above-mentioned plugs must comply with the polarity when plugged into the socket will vary depending on the country. For example, the polarity of the plug when plugged into the socket is not distinguished in the country, but in Argentina or the United Kingdom, it is mandatory to distinguish the polarity of the plug. The polarity of the plug when plugged into the socket cannot be reversed. Another example is Australia, although there is no mandatory requirement for the polarity of plugs when plugged into the socket, there are still regulations that must be followed.

If the power connector is a fixed power connector, the polarity of the pair of connector conductors and the through holes in the socket can be distinguished through different sizes (such as different shapes and sizes) to avoid that the polarity that the connector conductors should match is different from the actual insertion. The polarity of the connection is opposite when it is installed on the socket; however, if it is an adapter power connector, it is usually assembled with one body and adapters of different specifications, because there is no polarity matching between the adapter and the body Ensure the structure. Even if the connector conductor and the hole in the socket have a structure that distinguishes the polarity through different sizes or arrangements, it is difficult to avoid the user not noticing the details of polarity matching and installing the adapter in reverse, resulting in the plug being inserted into the socket. The conductors of the connector have opposite polarity, which may lead to electrical damage or wire fire.

Therefore, how to solve the problem of the conventional power connector is the main focus of this invention.

In order to solve the above problem, the creator devoted his mind to research and developed a power connector to ensure that the polarity of the connector conductors matches.

An embodiment of the invention provides a power connector with a polarity matching ensuring structure, which includes a body and an adapter. The body has a first coupling part and a first matching part, and the body has a pair of first conductive terminals with different polarities, the first matching part is arranged around the first coupling part in the body, and The pair of first conductive terminals are exposed at the position where the first coupling portion is provided. The adapter has a second coupling part that is detachably coupled to the first coupling part. The adapter also has a second matching part and the first matching part that are concave and convex with each other, and the adapter corresponds to the The first conductive terminal has a pair of second conductive terminals with different polarities, and the adapter has a plurality of joint conductors that are electrically connected to the pair of second conductive terminals; the pair of first conductive terminals and the pair of second conductive terminals When they are opposite to each other with the same polarity, the first matching part can be aligned and matched with the second matching part, and the second coupling part can be combined with the first coupling part to complete the assembly of the adapter on the body.

In one embodiment, the first joint part and the second joint part are rotational fasteners.

In one embodiment, the body includes a shell part and a shell cover, the first coupling part is provided on the shell cover, and the first conductive terminal is exposed on the shell cover, and the first matching part has a an arc-shaped groove on the second matching part, and the second matching part has a convex part corresponding to the arc-shaped groove, the convex part can fully extend into the arc-shaped groove, and the convex part rotates as the adapter rotates Move within the range of both ends of the arc-shaped groove.

In one embodiment, the first joint portion has a plurality of arc-shaped hooks arranged in a circle, and there is a break between two ends of each arc-shaped hook and an adjacent arc-shaped hook, and each arc-shaped hook has a break. The shaped hook has a slot; the second joint part is a plurality of clamping blocks provided on the adapter, and the plurality of clamping blocks can be aligned with each of the fractures respectively, and the adapter is rotated so that each of the clamping blocks The block is screwed into the corresponding slot and positioned.

In one embodiment, each arc-shaped hook has a first stopper and a first limiter in its slot; each of the blocks has a second stopper and a second limiter. When each of the blocking blocks is screwed into the corresponding blocking slot, the second blocking part abuts against the first blocking part to block, and the first limiting part and the second limiting part are embedded and positioned.

In one embodiment, the shell cover has a pair of hollow columns surrounded by the plurality of arc-shaped hooks. The pair of first conductive terminals are cylindrical and extend among the pair of hollow columns with one end exposed.

In one embodiment, the adapter includes a base body, the pair of second conductive terminals are conductive spring pieces and are restricted by the base body and hidden in the adapter, and the plurality of blocking blocks correspond to the base body. The shape of the fracture is prominent.

In one embodiment, the base body has a ring wall between the plurality of clamping blocks, and a wall of the base body in the ring wall is provided with a plurality of arc-shaped holes that directly lead to the pair of second conductive terminals. When the connector is assembled to the body, the pair of first conductive terminals can extend into the plurality of arc-shaped holes and contact the pair of second conductive terminals.

In one embodiment, the adapter is in the shape of a rectangular body, a circular body or a trapezoidal body; the plurality of joint conductors are arranged parallel to each other on the adapter.

In one embodiment, the adapter is in the shape of a rectangular body, a circular body or a trapezoidal body; the plurality of joint conductors are arranged at an angle to each other on the adapter.

Therefore, through the power connector of this invention with a polarity matching ensuring structure, the first matching part provided by the body and the second matching part of the adapter must be aligned and matched, so that the first connecting part of the body can be connected with the adapter. The second joint portion of the head is combined, so that the pair of second conductive terminals and the pair of first conductive terminals are electrically connected with matching polarities to avoid electrical damage or wire fire due to reverse polarity when the connector conductors are inserted into the socket. Unfortunately something happened.

In order to fully understand the purpose, characteristics and effects of this invention, this invention is described in detail through the following specific embodiments and in conjunction with the attached drawings, as follows.

As shown in Figures 1 to 11, an embodiment of the present invention provides a power connector 100 with a polarity matching ensuring structure. As shown in Figure 1, it includes a body 10 and an adapter 20, wherein:

The body 10, as shown in Figures 2 and 3, has a first connecting part 11 and a first matching part 12, and the body 10 has a pair of first conductive terminals 13, the polarities of the pair of first conductive terminals 13 are the same. Differently, in this embodiment, the polarity of one of the first conductive terminals 13 is corresponding to the live wire of the commercial power, and the polarity of the other first conductive terminal 13 is corresponding to the ground wire of the commercial power. Furthermore, the first matching part 12 is disposed around the first coupling part 11 on the body 10 , and the pair of first conductive terminals 13 is exposed at the position where the first coupling part 11 is provided.

The adapter 20 has a second coupling part 21, a second matching part 22, and a pair of second conductive terminals 23. The second coupling part 21 is detachably coupled with the first coupling part 11, The second matching part 22 and the first matching part 12 are concave and convex. The pair of second conductive terminals 23 are provided corresponding to the pair of first conductive terminals 13 (as shown in FIG. 2 ), and the pair of second conductive terminals 23 also have different polarities, and are different from the pair of first conductive terminals 13 Likewise, one corresponds to the live wire of the mains power and the other corresponds to the ground wire of the mains power. In addition, the adapter 20 has a plurality of connector conductors 24 electrically connected to the pair of second conductive terminals 23 .

In one embodiment, the first joint part 11 and the second joint part 21 are rotationally fastened (see also Figures 9-11). Preferably, the body 10 includes a shell part 14 and a shell cover 15 , the first coupling part 11 is provided on the shell cover 15 , and the first conductive terminal 13 is exposed on the shell cover 15 . As shown in FIG. 3 , the first matching part 12 has an arc-shaped groove 121 provided on the housing cover 15 , and the second matching part 22 has a protruding part 221 corresponding to the arc-shaped groove 121 , and the protruding part 221 can be fully extended. into the arc-shaped groove 121, and the protruding portion 221 moves within the range of both ends of the arc-shaped groove 121 as the adapter 20 rotates.

In one embodiment, as shown in FIG. 3 , the first connecting portion 11 has a plurality of arc-shaped hooks 111 , where four arc-shaped hooks 111 are arranged in a circle, and the two arc-shaped hooks 111 are arranged in a circle. There is a break 112 between the end and the adjacent arc-shaped hook 111, and each arc-shaped hook 111 has a slot 113. Correspondingly, the second coupling part 21 has four clamping blocks 211 provided on the adapter 20 . The four clamping blocks 211 can be respectively aligned with the four fractures 112 shown in FIG. 3 and pass through the adapter 20 . Rotate, so that each blocking block 211 is screwed into the corresponding blocking slot 113 and positioned.

In one embodiment, as shown in FIGS. 3 and 10 , each arc-shaped hook 111 has a first blocking portion 114 and a first limiting portion 115 in the slot 113 . Correspondingly, each blocking block 211 has a second blocking part 212 and a second limiting part 213. When each blocking block 211 is screwed into the corresponding blocking groove 113, the second blocking part 212 abuts the first blocking part 212. The stopper 114 blocks the movement, and the first limiting portion 115 and the second limiting portion 213 are embedded and positioned. The first stop portion 114 is a wall surface formed by the arc-shaped hook 111 in the slot 113, and the first limiting portion 115 is a groove on the arc-shaped hook 111 corresponding to the slot 113; in addition, The second blocking portion 212 is a side surface of the blocking block 211 , and the second limiting portion 213 is a protrusion of the blocking block 211 to correspond to the groove.

In one embodiment, the shell cover 15 has a pair of hollow columns 16 , which are surrounded by a plurality of arc-shaped hooks 111 , and the pair of first conductive terminals 13 are cylindrical and extend from the pair of hollow columns 16 . In the hollow column 16 , one end of each first conductive terminal 13 is exposed outside the hollow column 16 . Furthermore, the adapter 20 includes a base 25 , the pair of second conductive terminals 23 are conductive spring pieces (as shown in FIGS. 2 and 4 ), and the pair of second conductive terminals 23 are restricted by the base 25 and hidden in the adapter. Connector 20. In addition, the four clamping blocks 211 protrude from the base 25 corresponding to the shape of each fracture 112 .

In one embodiment, as shown in Figure 3, the base 25 has a ring wall 251 between the four blocks 211, and the base 25 is provided with a plurality of arc holes 252 on one wall of the ring wall 251 ( Four are used as examples here), and the arc-shaped holes 252 pass through the pair of second conductive terminals 23 . When the adapter 20 is assembled into the body 10 , the pair of first conductive terminals 13 can extend into the arc-shaped holes 252 (see FIG. 4 ), and one end of the hollow column 16 is exposed from the first conductive terminals 13 The pair of second conductive terminals 23 are contacted.

In one embodiment, as shown in Figures 5-7, there are three adapters 20, adapter 20A, and adapter 20B. The difference is that the adapter 20 is in the shape of a rectangular body, and the adapter 20A is in the shape of a circular body. The adapter 20B is roughly in the shape of a trapezoid. The two joint conductors 24 of the adapter 20 are arranged in parallel with each other. The three joint conductors 24 of the adapter 20B are also arranged in parallel with each other. The two joint conductors 24 of the adapter 20A are also arranged in parallel. The two joint conductors 24 are arranged obliquely to each other. In addition, in addition to the above embodiments, the base body 25 is assembled separately from the adapter 20, such as the adapter 20A and the adapter 20B shown in Figures 6-7. The base body 25 is shown to be assembled with the adapter 20A and the adapter 20B. The adapter 20B has an integrated structure. The above-mentioned three adapters 20, adapter 20A, and adapter 20B are of the specifications applicable to China, Australia, and the United Kingdom respectively. However, the shapes and specifications of these adapters are only used as illustrative examples. Creation is not limited to these specifications.

When the power connector 100 of the above embodiment is actually used, you can choose the adapter according to the specifications of the country where you are located. For example, when you are in your home country, you can use the adapter 20, and when you are in Australia or the United Kingdom, you can use the adapter 20A respectively. Or use adapter 20B. Taking the use of the adapter 20 as an example, when it is assembled into the body 10, the pair of first conductive terminals 13 and the pair of second conductive terminals 23 with the same polarity are opposite to each other, that is, the first conductive terminals corresponding to the polarity of the mains live wire respectively. A conductive terminal 13 and a second conductive terminal 23 are opposed to each other, and the first conductive terminal 13 and the second conductive terminal 23 respectively correspond to the polarity of the mains ground wire. At this time, as shown in FIG. 8 , the first matching part 12 can be connected to the second conductive terminal 13 . The two matching parts 22 are aligned and matched, so that the second combining part 21 can be combined with the first combining part 11, and then the adapter 20 is rotated to the position (as shown in Figure 9-11) to complete the assembly of the adapter 20 on The body 10 can ensure that the connector conductor 24 meets the matching polarity when inserted into the socket and connected to the mains. The assembly operation of the adapter 20A or the adapter 20B on the main body 10 is the same as the assembly operation of the adapter 20 on the main body 10 .

In other words, if the first conductive terminal 13 corresponding to the polarity of the mains live wire is opposite to the second conductive terminal 23 corresponding to the polarity of the mains ground wire, and the first conductive terminal 13 corresponding to the polarity of the mains ground wire is opposite to the polarity of the mains live wire, When the second conductive terminals 23 face each other, because the second matching part 22 is not aligned with the first matching part 12, the second coupling part 21 cannot be coupled to the first coupling part 11, and the user can immediately realize the rotation. Install the connector upside down, adjust the position of the adapter 20 and then reassemble it on the body 10 .

Furthermore, for example, the adapter 20A has two connector conductors 24 arranged at an angle, or the adapter 20B has three connector conductors 24 arranged parallel to each other. The connector conductors 24 themselves have already avoided polarity reversal when plugged into a socket. However, if the structures of the first matching part 12 and the second matching part 22 are not limited to being aligned before they can be matched, it is easy to install the adapters 20A and 20B backwards without noticing, resulting in polarity corresponding to the mains live wire. The first conductive terminal 13 is connected to the second conductive terminal 23 corresponding to the polarity of the mains ground wire, and the first conductive terminal 13 corresponding to the polarity of the mains ground wire is connected to the second conductive terminal 23 corresponding to the polarity of the mains live wire. . For example, in this invention, the main body 10 is provided with a first matching part 12, and the adapters 20, 20A, and 20B are provided with a second matching part 22, so that the first matching part 12 and the second matching part 22 cooperate when they are aligned, and the second matching part 22 The coupling part 21 can be coupled with the first coupling part 11 to complete the assembly of the adapters 20 , 20A, and 20B on the body 10 .

From the above description, it is easy to find that the characteristic of this invention is that the first matching part 12 provided through the body 10 and the second matching part 22 of the adapters 20, 20A, 20B must be aligned and matched. Only when the second connecting portion 21 of the adapter 20 can be combined with the second connecting portion 21 of the adapter 20 can the pair of first conductive terminals 13 and the pair of second conductive terminals 23 be electrically connected with matching polarities to prevent the connector conductor 24 from being inserted into the socket. Unfortunately, electrical appliances may be damaged or wires may catch fire due to reverse polarity.

The present invention has been disclosed above with preferred embodiments. However, those familiar with the art should understand that the embodiments are only used to describe the invention and should not be interpreted as limiting the scope of the invention. It should be noted that all changes and substitutions that are equivalent to this embodiment should be deemed to be included within the scope of this invention. Therefore, the scope of protection of this invention shall be subject to the scope of the patent application.

100:Power connector 10:Ontology 11:The first junction 111: Curved hook 112: Fracture 113:Card slot 114:First block 115: The first limiting part 12:First matching department 121:Arc groove 13: First conductive terminal 14: Shell part 15: Shell cover 16: Hollow column 20:Adapter 20A:Adapter 20B:Adapter 21:Second joint part 211: jam block 212:Second block 213: Second limit part 22:Second Matching Department 221:convex part 23: Second conductive terminal 24: Connector conductor 25: base body 251:Ring wall 252:Arc hole

Figure 1 is a three-dimensional appearance view of the power connector of the embodiment of this invention. Figure 2 is an exploded configuration diagram of the power connector of the embodiment of this invention. Figure 3 is a mating structural diagram of the first and second coupling parts and the first and second matching parts of the power connector according to the embodiment of the present invention. Figure 4 is a positional arrangement diagram of the first and second conductive terminals relative to the base of the adapter according to the embodiment of the present invention. Figure 5 is a structural diagram of an adapter according to an embodiment of the present invention. The adapter is in the shape of a rectangular body. Figure 6 is a structural diagram of another adapter according to the embodiment of the present invention. The adapter is in the shape of a circular body. Figure 7 is a structural diagram of another adapter according to the embodiment of the present invention. The adapter is in the form of a trapezoidal body. Figure 8 is a schematic diagram of the mating of the second matching part of the adapter to the first matching part of the body according to the embodiment of the present invention. Figure 9 is a schematic diagram of the adapter in Figure 8 being rotated after being coupled to the main body. Figure 10 is a schematic diagram of the action of the adapter in Figure 9 before and after rotation, and the side view of the clamping block being screwed into the slot from the fracture to positioning. Figure 11 is a schematic diagram of the action of the clamping block being screwed into the slot from the fracture to positioning before and after the adapter in Figure 9 is rotated.

10:Ontology

11:The first junction

111: Curved hook

112: Fracture

113:Card slot

114:First block

115: The first limiting part

12:First matching department

121:Arc groove

13: First conductive terminal

14: Shell part

15: Shell cover

16: Hollow column

20:Adapter

21:Second joint part

211: jam block

22:Second Matching Department

221:convex part

24: Connector conductor

25: base body

251:Ring wall

252:Arc hole

Claims (10)

A power connector with a polarity matching ensuring structure, which includes: A body, the body has a first coupling part and a first matching part, and the body has a pair of first conductive terminals with different polarities, the first matching part is provided on the first coupling part in the body around, and the pair of first conductive terminals are exposed at the position where the first coupling portion is provided; and An adapter, and the adapter has a second coupling part that is detachably coupled to the first coupling part, and the adapter has a second matching part and the first matching part that are concave and convex with each other, and The adapter has a pair of second conductive terminals with different polarities corresponding to the pair of first conductive terminals. The adapter has a plurality of joint conductors that are electrically connected to the pair of second conductive terminals; the pair of first conductive terminals and When the pair of second conductive terminals with the same polarity are opposite to each other, the first matching part can be aligned and matched with the second matching part, and the second combining part can be combined with the first combining part to complete the assembly of the adapter. the ontology. The power connector with a polarity matching ensuring structure as described in claim 1, wherein the first coupling part and the second coupling part are rotary buckles. The power connector with a polarity matching ensuring structure as described in claim 2, wherein the body includes a shell part and a shell cover, the first coupling part is provided on the shell cover, and the first conductive terminal is on the shell cover Exposed, the first matching part has an arc-shaped groove provided on the shell cover, and the second matching part has a convex part corresponding to the arc-shaped groove, and the convex part can fully extend into the arc-shaped groove, And the convex part moves within the range of both ends of the arc-shaped groove as the adapter rotates. The power connector with a polarity matching ensuring structure as described in claim 3, wherein the first joint part has a plurality of arc-shaped hooks arranged in a circle, and the two ends of each arc-shaped hook are in contact with the adjacent arc-shaped hooks. There is a break between the hooks, and each arc-shaped hook has a slot; the second joint part is a plurality of blocks provided on the adapter, and the plurality of blocks can be aligned with each of the breaks respectively. , and rotate the adapter so that each clamping block is screwed into the corresponding slot and positioned. The power connector with a polarity matching ensuring structure as described in claim 4, wherein each arc-shaped hook has a first stopper and a first limiting portion in the slot; and each of the clamping blocks has a corresponding The second blocking part and a second limiting part. When each blocking block is screwed into the corresponding slot, the second blocking part abuts against the first blocking part to block, and the first limiting part and The second limiting portion is embedded and positioned. The power connector with a polarity matching ensuring structure as described in claim 4, wherein the cover has a pair of hollow pillars surrounded by the plurality of arc-shaped hooks, and the pair of first conductive terminals extend in a cylindrical shape. It is installed in the pair of hollow columns and one end is exposed. The power connector with a polarity matching ensuring structure as described in claim 6, wherein the adapter includes a base, and the pair of second conductive terminals are conductive elastic pieces and are restricted by the base and hidden in the adapter, The plurality of clamping blocks protrude from the base corresponding to the shape of each fracture. The power connector with a polarity matching ensuring structure as described in claim 7, wherein the base body has a ring wall between the plurality of clamping blocks, and the base body is provided with a plurality of arcs on one wall of the ring wall. The pair of second conductive terminals passes through the arc-shaped holes. When the adapter is assembled on the body, the pair of first conductive terminals can extend into the plurality of arc-shaped holes and contact the pair of second conductive terminals. The power connector with a polarity matching ensuring structure as described in claim 1, wherein the adapter is in the shape of a rectangular body, a circular body or a trapezoidal body; the plurality of connector conductors are arranged parallel to each other on the adapter. The power connector with a polarity matching ensuring structure as described in claim 1, wherein the adapter is in the shape of a rectangular body, a circular body or a trapezoidal body; the plurality of connector conductors are arranged at an angle to each other on the adapter.

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