CN201392892Y - electrical connector - Google Patents

Abstract

An electrical connector, comprising a shell; and a metal terminal embedded in the shell; a first connecting portion with a piercing structure, wherein the piercing structure pierces the wire when the wire is inserted into the first connecting portion Insulation so that the bare wire part of the wire is in contact with the metal terminal to form an electrical connection; and a second connection part for inserting the wire, the second connection part includes: a wire insertion hole and a metal spring for crimping the wire, When the electric wire is inserted into the wire insertion hole, the bare part of the electric wire forms an electrical connection with the metal terminal; wherein, the electric wire can be selectively connected to one of the first connecting portion and the second connecting portion.

Description

electrical connector

【Technical field】

The utility model relates to the field of electrical connectors, in particular to an electrical connector.

【Background technique】

A wire-to-board electrical connector used in electronic ballasts for lighting or LED power supplies, this type of electrical connector is generally arranged on a printed circuit board, and usually, the connection between the wire and the printed circuit board is realized through the connector. Among them, the connection between the wire and the electrical connector mainly involves two methods: automatic wire insertion by a multifunctional machine and manual wire insertion. (InsulationDisplacement Contact, hereinafter referred to as IDC connection method) or stripping insertion connection method is connected to the metal terminal in the wire-to-board electrical connector. However, in the above-mentioned strip-and-insert connection method, it is generally difficult for the electric wire inserted into the electrical connector to be released from the wire-to-board electrical connector. Therefore, even in the rework operation, the metal in the electric wire and the electrical connector The terminals are also difficult to separate.

Therefore, how to design a wire-to-board electrical connector with IDC connection mode, stripping and inserting connection mode and wire release function, which can be applied to electronic ballasts for lighting or LED power supplies, can realize both wires and wires. The wire-to-board electrical connection between printed circuit boards, and the ability to release the wires from the metal terminals in a timely manner when needed, will be one of the major development trends in the industry.

【Content of utility model】

In view of the technical problems mentioned in the background art above, the purpose of this utility model is to overcome at least one aspect of the defects and problems in the prior art.

One purpose of the present utility model is to provide an electrical connector, which has IDC connection mode, wire stripping and insertion connection mode and wire release function at the same time.

Another object of the present utility model is to provide an electrical connector, which can conveniently realize the connection between the electric wire and the printed circuit board, and is easy to operate and assemble.

Another purpose of the present utility model is to provide an electrical connector, the user can arbitrarily choose one of the IDC connection mode and the stripping and insertion connection mode according to actual needs, so as to realize the electrical connection between the wire and the printed circuit board .

Another object of the present utility model is to provide an electrical connector, wherein, in the wire stripping and insertion connection mode, the wires can be easily taken out from the electrical connector through the release mechanism on the electrical connector.

The utility model is achieved as follows: an electrical connector, including a housing; and a metal terminal embedded in the housing; a first connecting portion with a piercing structure, wherein the piercing structure Piercing the insulation of the electric wire during the connection part to make the bare wire part of the electric wire contact with the metal terminal to form an electrical connection; When the wire is inserted into the wire insertion hole, the bare wire part of the wire forms an electrical connection with the metal terminal; wherein the wire can be selectively connected to both the first connection part and the second connection part one of.

Further, the electrical connector also includes a release mechanism, which applies a pressure to the metal dome to deform the metal dome so as to facilitate the removal of the electric wire.

Wherein, the first connecting portion includes two blade structures at the top of the metal terminal, and a U-shaped wire groove formed by the bottom of the two blade structures.

Specifically, the release mechanism is set as a release button on the housing; wherein, when the wire needs to be pulled out, the metal dome is deformed by pressing down on the release button to apply a downward pressure on the metal dome, so as to facilitate Release the wire from the socket.

According to a specific embodiment, one end of the metal elastic piece of the second connecting part is set as a deformable elastic piece end for crimping the bare wire part of the electric wire and forming an electrical connection with the electric wire, and the other end is in contact with the metal terminal, so that the electric wire and the The metal terminals form electrical connections.

According to a specific embodiment, a contact hole through which a power supply line passes is provided on the metal elastic sheet corresponding to the wire insertion hole, and a connection hole for inserting the other end of the metal elastic sheet is provided on the metal terminal.

Further, a wire insertion hole is formed on the housing; and a wire insertion opening corresponding to the first connecting portion is opened on the housing.

Further, the housing further includes a rear housing part and a front housing part detachably assembled with the rear housing part, wherein the wire insertion opening is provided on the rear housing part, and the wire insertion hole is provided on the front housing part .

Specifically, the front housing part and the rear housing part are connected to each other through a buckle structure.

Further, there are a plurality of metal terminals, which are embedded in the housing independently and parallel to each other, and meanwhile, the number of release mechanisms is the same as the number of metal terminals.

Wherein, the housing is formed by splicing a plurality of sub-housings embedded with a single metal terminal and a single release mechanism through a connecting mechanism.

Specifically, the rear housing part is formed by splicing a plurality of rear sub-housings embedded with a single metal terminal through a connecting mechanism. The front housing part is formed by splicing together a plurality of front sub-shells embedded in a single release piece through a connecting mechanism.

Further, the connection mechanism is a snap-fit mechanism. The engaging mechanism is a cylinder and a hole receiving the cylinder, wherein a hard interference is made between the cylinder and the hole.

The technical effect of the utility model lies in: further improving the existing wire-to-board electrical connectors used in electronic ballasts for lighting or LED power supplies, and integrating the IDC connection on the basis of the existing wire-to-board electrical connectors The method, stripping connection method and wire release structure are convenient for users to apply. Among them, the electric connector provided by the utility model is easy to operate and easy to assemble in the process of realizing the connection between the electric wire and the printed circuit board. The user can arbitrarily choose any one of the IDC connection method and the stripping connection method according to actual needs to realize the electrical connection between the wire and the printed circuit board. Specifically, when it is necessary to realize the separation between the electric wire and the electric connector, the electric wire can be released from the electric connector provided by the utility model through the release mechanism on the electric connector.

【Description of drawings】

In order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

FIG. 1 is a schematic diagram of an overall structure of an electrical connector according to a specific embodiment of the present invention;

Fig. 2 is a schematic front view of the electrical connector described in a specific embodiment according to the present invention;

Fig. 3 is A-A sectional view among Fig. 2;

Fig. 4 is B-B sectional view among Fig. 2;

Fig. 5 is a C-C sectional view among Fig. 3;

FIG. 6 is a partially enlarged view in FIG. 2 .

【Detailed ways】

The following is a description of the specific implementation of the utility model according to specific examples. Those skilled in the art can easily understand the structure, advantages and effects of the utility model from the content disclosed in the following examples. Furthermore, the following drawings are all simplified schematic diagrams, and only illustrate the basic idea of the utility model in a schematic manner, so only the components related to the utility model are shown in the drawings rather than the number and shape of components in actual implementation. and size drawing, the type, quantity and proportion of each component can be changed at will during actual implementation, and the layout of the components may be more complex.

The utility model provides an electrical connector, which is applied in the wire-to-board electrical connector in electronic ballasts for lighting or LED power supplies. In the process of realizing the electrical connection between wires and printed circuit boards, the IDC connection mode is integrated at the same time. , stripping connection and wire release structure.

According to a specific embodiment of the utility model, an electrical connector provided by the utility model, as shown in Figure 1 and Figure 3, mainly includes a housing 1 and a metal terminal 2 embedded in the housing 1, the On the one hand, the metal terminal 2 is welded with the printed circuit board (not shown) through its lower end to form an electrical connection, and on the other hand, it forms an electrical connection with the electric wire 100 through the plug-in mode of the electric wire, thereby realizing through the electrical connector provided by the utility model The electrical connection between the wire 100 and the printed circuit board. The electrical connector is also provided with a first connecting portion 20 and a second connecting portion 30 for receiving the electric wire 100, wherein the electric wire 100 can selectively pass through the first connecting portion 20 or the second connecting portion 30 on the electrical connector. The metal terminals 2 in the housing 1 are in contact to form an electrical connection, so as to realize the electrical connection of the wire to the board. Specifically, the electric wire 100 can either move from top to bottom along the X direction as shown in FIG. Insert right to left into the electrical connector to form an electrical connection with the metal terminal 2 . Therefore, with the electrical connector provided by the utility model, the user can arbitrarily choose a connection method according to actual needs, so as to realize the electrical connection between the wire and the printed circuit board.

According to a specific embodiment of the present invention, as shown in FIGS. 2 and 6 , the first connecting portion 20 has a piercing structure 40 , wherein the piercing structure 40 pierces the electric wire 100 when the electric wire 100 is inserted into the first connecting portion 20 The insulating skin is used to make the bare wire part 101 of the wire contact with the metal terminal 2 to form an electrical connection. Specifically, as shown in FIG. 6 , the first connecting portion 20 includes two relatively independent blade structures 21 extended and formed on the top of the metal terminal 2 , and the lower part of the two blade structures 21 and their common bottom. A U-shaped trunking 22. Wherein, the piercing structure 40 is composed of the upper parts of the two blade structures 21 and the piercing space formed between the upper parts of the two blade structures 21 . Wherein, as shown in FIG. 6, the transverse distance of the U-shaped wire groove 22 is equal to or slightly smaller than the diameter of the bare wire portion 101 of the electric wire 100, so as to ensure that the bare wire portion 101 of the electric wire 100 is fully in contact with the metal terminal 2, thereby forming an electrical connection; In this way, when the wire 100 with insulation is guided from the piercing space to the U-shaped slot 22, the insulation of the wire 100 is pierced by the two blade structures 21 positioned above the U-shaped slot 22, thereby Make the bare wire part 101 of the electric wire 100 fully contact with the metal terminal 2 to form an electrical connection. That is to say, the electric wire 100 with insulation can be directly connected to the electrical connector provided by the utility model through the first connecting part 20, and the insulation of the electric wire 100 can be pierced through the piercing structure 40 on the first connecting part 20. The bare wire part 101 of the electric wire 100 is in contact with the metal terminal 2, so as to realize the electrical connection between the electric wire 100 and the printed circuit board.

According to a specific embodiment of the present utility model, as shown in FIGS. 3-5 , the second connecting portion 30 includes a wire insertion hole 13 and a metal shrapnel 51 for crimping the wire 100 . When the wire 100 is inserted into the wire insertion hole 13 , the wire The bare wire portion 101 of 100 forms an electrical connection with the metal terminal 2 . Specifically, as shown in FIG. 3 , one end of the metal shrapnel 51 is set as a deformable shrapnel end 51 a for crimping the bare wire part 101 of the electric wire 100 and forming an electrical connection with the electric wire 100 , and the other end 51 b is in contact with the metal terminal 2 , so that the wire 100 is electrically connected to the metal terminal 2 . Wherein, according to a specific embodiment of the present utility model, the middle part of the metal terminal 2 is provided with a connecting hole 2a, and the other end 51b of the metal elastic piece 51 is in contact with the upper wall of the connecting hole 2a of the metal terminal 2. At the same time, the metal elastic piece 51 also There is a contact hole 51c through which the power supply line corresponding to the wire insertion hole passes. When the wire 100 is inserted into the wire insertion hole 13 of the second connection part 30 along the Y direction, the bare wire part 101 of the wire 100 is in the Under the upward elastic force of the deformable elastic piece end 51a in the metal elastic piece 51, it is crimped between the upper wall of the contact hole 51c and the elastic piece end 51a, so that the bare wire part 101 of the electric wire 100 passes through the metal elastic piece 51 and the metal terminal 2 Make an electrical connection. At the same time, the electric wire 100 is fixed in the second connecting portion 30 by the elastic force of the elastic piece end 51 a of the metal elastic piece 51 . That is to say, the wire 100 with the exposed bare wire part 101 end can be plugged into the second connection part 30 of the electrical connector provided by the utility model, so that the bare wire part 101 of the wire 100 can be connected to the metal terminal in the housing 1 2 indirect contact, so as to realize the electrical connection between the wire 100 and the printed circuit board.

At the same time, in the electrical connector provided by the utility model, there is also a release mechanism 50 for the electric wire 100. The release mechanism 50 can apply a pressure to the spring end 51a of the metal dome 51 when moving, so that the dome end 51a of the metal dome 51 deformation, so that the electric wire 100 is conveniently withdrawn from the contact hole 51c of the metal dome 51 , and the electric wire 100 is conveniently released from the second connecting portion 30 . Specifically, according to a specific embodiment of the present invention, as shown in FIGS. 1 and 3 , the release mechanism 50 is a release button 50 provided on the housing 2 . Wherein, when the electric wire 100 needs to be pulled out, by pressing down the release button 50, a downward pressure is exerted on the metal dome 51, so that the dome end 51a of the metal dome 51 is deformed, so that it can be easily removed from the contact hole 51c. The electric wire 100 is released to realize the function of releasing the electric wire 100 from the second connecting portion 30 of the electrical connector. In this way, in the electrical connector provided by the utility model, the wires can be conveniently taken out from the electrical connector through the release mechanism on the electrical connector.

According to a specific embodiment of the utility model, in the electrical connector provided by the utility model, the wire insertion hole 13 in the second connecting part 30 is opened on the housing 1; The connecting part corresponds to the insertion line opening 12 . Moreover, the housing 1 is made of plastic, and further includes a rear housing part 10 and a front housing part 11 detachably assembled with the rear housing part 10, wherein the wire insertion opening 12 is provided on the rear housing part 10, The wire insertion hole 13 is disposed on the front housing part 11 . Specifically, the front housing part 11 and the rear housing part 10 are connected to each other through a buckle structure.

In the electrical connector provided by the present invention, there are multiple metal terminals 2 , which are embedded in the housing 1 independently and parallel to each other. Meanwhile, the number of release mechanisms 50 is the same as the number of metal terminals 2 . Correspondingly, the housing 1 can be formed by splicing a plurality of front sub-housings embedded in a single release mechanism 50 and the rear housing part 11 embedded in the metal terminal 2 through a connecting mechanism. Specifically, according to a specific embodiment of the present utility model, the front housing part 11 is formed by splicing a plurality of front sub-shells embedded in a single release member 50 through a connection mechanism, and then these front sub-shells are connected to the embedded body through a connection mechanism. On the rear housing part 10 with metal terminals 2 . Wherein, the connection mechanism connecting the plurality of sub-housings is an engaging mechanism. Specifically, the engaging mechanism is a cylinder and a hole receiving the cylinder, wherein there is a hard interference between the cylinder and the hole. Thereby, the connection between multiple sub-housings is realized. Certainly, in another embodiment, the rear housing part 10 may also be formed by splicing a plurality of rear sub-housings embedded with a single metal terminal 2 through a connecting mechanism.

In the electrical connector provided in this specific embodiment, the housing 1 is composed of seven sub-housings, and each sub-housing includes a front sub-housing embedded with a single release member 50 and a rear sub-housing embedded with a single metal terminal 2 spliced together. That is, each sub-housing has a first connecting portion 20 and a second connecting portion 30 .

The electrical connector provided by the utility model, when assembling, firstly embed the metal terminal 2 in the rear sub-housing made of plastic, and at the same time put the release button 50 as the release mechanism into the front sub-housing; then, put a A front sub-shell embedded with a single release member 50 and a rear sub-shell embedded with a single metal terminal 2 are spliced together to form a sub-shell through a connecting mechanism, and then according to actual needs, for example, seven sub-shells are spliced with each other through a connecting mechanism to form a Complete electrical connector.

When in use, firstly, the electrical connector is welded on the printed circuit board through a through hole, so that the lower end of the metal terminal 2 in the electrical connector is conducted with the printed circuit board, so as to form an electrical connection. Next, the user can insert the electric wire 100 into the first connecting part 20 or the second connecting part 30 of the electrical connector according to actual needs, so that the electric wire 100 is in direct or indirect contact with the metal terminal 2 in the electrical connector, An electrical connection is formed, so that conduction between the wire 100 and the printed circuit board is realized through the electrical connector. Therefore, the user can arbitrarily choose a connection method according to actual needs, so as to realize the electrical connection between the wire and the printed circuit board.

Wherein, when the electric wire 100 is plugged into the first connecting portion 20 of the electrical connector, the electric wire 100 with insulation is directly inserted into the U-shaped wire groove from the piercing space formed between the two blade structures 21 22, the insulation of the electric wire 100 is pierced through the piercing structure 40 on the first connecting part 20, so that the bare wire part 101 of the electric wire 100 is in contact with the metal terminal 2, thereby realizing the electrical connection between the electric wire 100 and the printed circuit board. sexual connection. And when the electric wire 100 is plugged into the second connecting portion 30 of the electrical connector, the elastic piece end 51a of the metal elastic piece 51 presses the bare wire part 101 of the electric wire 100 in the contact hole 51c of the metal elastic piece 51, so that the bare wire part 101 of the electric wire 100 The wire part 101 is in contact with the hole wall of the contact hole 51c, and the other end 51b of the metal dome 51 is in contact with the metal terminal 2, forming an electrical connection between the bare wire part 101 of the wire 100 and the metal terminal 2, thereby realizing the connection between the wire 100 and the printed wire. Electrical connections between circuit boards. When it is necessary to release the electric wire 100 from the second connecting portion 30, the release button 50 as a release mechanism is pressed downwards, and the release button 50 acts on the spring end 51a of the metal dome 51 to overcome its elastic force to deform it, thereby releasing the wire 100. The electric wire 100 allows the user to conveniently take out the electric wire 100 from the second connecting portion 30 . Therefore, in the electrical connector provided by the utility model, the electric wire can be easily taken out from the electrical connector through the release mechanism on the electrical connector. In summary, the electrical connector provided by the utility model has IDC connection mode, stripping connection mode and wire release function; it can conveniently realize the connection between the wire and the printed circuit board, and is easy to operate and assemble.

The above-mentioned embodiments of the utility model only illustrate the principle of the utility model and its effects, and are not intended to limit the utility model. Those skilled in the art should understand that without departing from the spirit and scope of the utility model Under the circumstances, any changes and improvements made to the utility model are within the scope of the utility model. The protection scope of the rights of the utility model shall be as defined in the scope of patent application of the present application.

Claims (15)

1. An electrical connector, comprising casing; and a metal terminal embedded in the housing, The first connection part has a piercing structure, wherein the piercing structure is connected to the first Piercing the insulation of the wire during a connection so that the bare wire part of the wire is in contact with the metal terminal contact to form an electrical connection; and The second connecting part for plugging in the wire, the second connecting part includes: a wire insertion hole and a metal shrapnel for crimping the wire, when the wire is inserted into the wire insertion hole, the wire The bare wire part forms an electrical connection with the metal terminal; Wherein, the wire can be selectively connected to one of the first connection part and the second connection part. 2. The electrical connector according to claim 1, further comprising a release mechanism, the release mechanism exerts a pressure on the metal dome to deform the metal dome so as to facilitate the removal of the electric wire. 3. The electrical connector according to claim 1, characterized in that: The first connection portion includes two blade structures at the top of the metal terminal, and a U-shaped wire groove formed by the bottom of the two blade structures. 4. The electrical connector according to claim 2, characterized in that: The release mechanism is configured as a release button provided on the housing; Wherein, when the wire needs to be pulled out, pressing down the release button exerts a downward pressure on the metal shrapnel to deform the metal shrapnel, thereby facilitating the release of the wire from the wire insertion hole. 5. The electrical connector according to claim 1, characterized in that: One end of the metal elastic piece of the second connecting part is set as a deformable elastic piece end for crimping the bare wire part of the electric wire and forming an electrical connection with the electric wire, and the other end is in contact with the metal terminal, so that the electric wire An electrical connection is formed with the metal terminal. 6. The electrical connector according to claim 5, characterized in that: A contact hole through which a power supply line passes is provided on the metal elastic sheet corresponding to the wire insertion hole, and a connection hole for inserting the other end of the metal elastic sheet is provided on the metal terminal. 7. The electrical connector according to any one of claims 1-6, characterized in that: The wire insertion hole is formed on the housing; and a wire insertion opening corresponding to the first connecting portion is opened on the housing. 8. The electrical connector according to claim 5, characterized in that: The housing further includes a rear housing part and a front housing part detachably assembled with the rear housing part, wherein the wire insertion opening is provided on the rear housing part, and the wire insertion hole is provided on the rear housing part on the front housing section. 9. The electrical connector according to claim 8, characterized in that: The front housing part and the rear housing part are connected to each other through a buckle structure. 10. The electrical connector according to any one of claims 1-5 or 8 or 9, characterized in that: There are multiple metal terminals, which are embedded in the housing independently and parallel to each other. Meanwhile, the number of the release mechanisms is the same as the number of the metal terminals. 11. The electrical connector according to claim 10, wherein, The housing is formed by splicing a plurality of sub-housings embedded with a single metal terminal and a single release mechanism through a connecting mechanism. 12. The electrical connector according to claim 8, characterized in that: The rear housing part is formed by splicing a plurality of rear sub-housings embedded with a single metal terminal through a connecting mechanism. 13. The electrical connector according to claim 8, characterized in that: The front shell part is formed by splicing together a plurality of front sub-shells embedded in the single release piece through a connecting mechanism. 14. The electrical connector according to any one of claims 11 to 13, characterized in that: The connecting mechanism is an engaging mechanism. 15. The electrical connector according to claim 14, characterized in that: The engaging mechanism is a cylinder and a hole receiving the cylinder, wherein there is a hard interference between the cylinder and the hole.

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