KR200467833Y1 - Noize reducing high voltage connector for motors - Google Patents

Abstract

The present invention has a terminal housing having one end open to receive an external connection terminal therein, a connector housing having a wire connected to one side of the terminal receiving portion, a rear cover mounted on a wire connection side of the connector housing, and the rear cover. It provides a noise reduction high voltage connector for a vehicle inserted therein and supporting the wire therein and including a wire retainer having a ferrite core embedded therein.

Description

Noise reducing high voltage connector for motors

The present invention relates to a high voltage connector for a vehicle, and in particular, proposes a new high voltage connector which suppresses noise generation due to a high voltage in a vehicle.

In general, the electric device of the car can be likened to the nervous system, and the car can only perform its performance properly when the electric device is operated normally.

The electric device of such a vehicle can be divided into an engine-side device and a vehicle-side device. The engine-side device includes an ignition device consisting of an ignition coil, a distributor high voltage cable, a spark plug, and a charging device including a generator and a regulator. In addition, the vehicle-side electric device includes a battery, a lighting device for lighting, a sign, a signal, an instrument warning display device and an air conditioner / heating device installed in an instrument panel, and the like.

The electric devices of the vehicle are all connected to the electronic control unit (ECU) inside the engine room of the vehicle by wires. At this time, a junction box is used as an intermediate medium connecting the wires and the ECU to each other. The junction box is a box composed of a fuse, a relay, and the like arranged in the vehicle as a single assembly. The junction box is a series of structures for preventing overcurrent from flowing to various electrical devices wired inside the vehicle. Inside the junction box, a fuse and various terminals and relays are installed. In addition, high voltage connectors connected to these fuses, various terminals, relays, and the like are connected to the lower portion of the junction box.

On the other hand, noise reduction is an important trend as high voltage is used in environmentally friendly vehicles such as electric vehicles. As a method for reducing noise of a high voltage vehicle, for example, shielding or grounding has been adopted for a high voltage system and a high voltage cable.

A shield is a method of shielding a noise source and a device affected by noise by sealing it with a metal or conductive object in order to minimize noise flowing from an external space. Ground is a high frequency generated by an electronic device. It is a method to prevent the disturbance caused by the malfunction of the equipment under the influence of low frequency energy. Post-processing or shielding with body ground or shielded high voltage connectors for high voltage systems and high voltage cables is costly and complex.

For example, referring to FIG. 1A, a shielding connector is illustrated by inserting or attaching a shielding material 10 and a sheathing portion 20 to a cable (wire) 30 connected to a connector, respectively, showing noise reduction means used for a connector. Complete 50. The detailed cross-sectional structure of the cable is formed by irradiating and crosslinking polyethylene or the like as a shielding insulator on the surface of the metal conductor (for example, tin-plated interlocked strand) as shown in FIG. In addition, the ground work in addition to the shield will be performed separately. As described above, the process of applying the shielding cable to the shielding ground work or the shielded high voltage connector is very difficult because the work method is difficult and must be done manually.

Shielding and shielded cables are used in most high voltage systems and high voltage cables, but noise has not been solved, and there is a limit to removing all noise due to the increase of high voltage units and electric devices in the vehicle.

The present invention was devised under the technical background described above, and an object of the present invention is to provide a new high voltage connector having a greater noise reduction effect than a shielded cable or a grounding operation.

Another object of the present invention is to improve the noise reduction performance of high voltage connectors connected to junction boxes, battery packs, inverters and other electrical devices in vehicles.

It is still another object of the present invention to provide a noise reduction high voltage connector that is excellent in assembly and does not increase manufacturing cost.

Other objects and technical features of the present invention will be presented in more detail in the following detailed description.

In order to achieve the above object, the present invention has a terminal housing having one end open to receive an external connection terminal therein and a connector housing to which a wire is connected to one side of the terminal receiving portion, and is mounted on the wire connection side of the connector housing. A noise reduction high voltage connector for a vehicle includes a rear cover and a wire retainer inserted into the rear cover to support the wire therein and having a ferrite core embedded therein.

The wire retainer may be formed of a ferrite material so that the retainer for fixing the wiring itself may be used as the ferrite core.

In addition, the wire retainer may include an inner space into which a wire is inserted, and the wire retainer may be used as a ferrite core housing by mounting a ferrite core to surround the wire. In this case, the wire retainer may be formed of a metal or plastic material.

The connector housing may further include a connector shielding portion outside the terminal accommodating portion to further reduce high frequency noise.

A waterproof chamber may be further mounted on the wire connection side of the connector housing to improve waterproofness.

According to the present invention, a ferrite core is incorporated in a high voltage connector as a noise reduction means, and a high frequency filter can be expected to block and improve high frequency noise by using a ferrite core as a magnetic component in the connector as a high frequency filter. In adding noise reduction performance, the high voltage connector of the present invention is excellent in workability and does not cause a problem of impairing aesthetics or increasing manufacturing cost. In addition, the high voltage connector according to the present invention can be used as a multifunctional connector having a waterproof performance as well as noise reduction performance according to the high voltage. In particular, by further including a shield inside, a double noise reduction effect can be expected in addition to the ferrite core.

1A and 1B are photographs showing a conventional shielded connector and a cable used therein.
Figure 2 is a schematic diagram showing a portion where the high voltage connector according to the present invention is connected.
Figure 3 is an exploded perspective view showing a high voltage connector according to the present invention.
Figure 4 is a perspective view showing one embodiment of a wire retainer including a ferrite core in the high voltage connector according to the present invention.
5 is a perspective view showing another embodiment of a wire retainer including a ferrite core in the high voltage connector according to the present invention.
6a to 6c is a process diagram showing the assembly process of the high voltage connector according to the present invention.

The present invention relates to a high-voltage connector for automobiles for noise reduction that can reduce the noise that can be generated by using a high voltage in the connector applied to the vehicle.

 To this end, the present invention is intended to block the high frequency (noise) flowing through the wiring by combining the ferrite core in the retainer form on the open side of the connector to which the wiring is connected.

The high voltage connector is a component used to electrically connect high voltage / high current to electrical devices and wires, and is used for wiring connections between junction boxes and other peripheral devices in a vehicle. The present invention applies a ferrite core, a magnetic material for high frequency, mainly made of ferric oxide, to the high voltage connector to form a high voltage connector with excellent workability without the occurrence of interference with wiring. Significantly improves abatement performance.

The high voltage connector of the present invention, for example, as shown in Figure 2 between the junction box 120 and the wire 105 for connecting the battery pack 100, inverter 110, etc., respectively, that is, in the connecting area Adopted to filter the noise of the high current flowing through the wire. The connection position may be applied to various places, such as between the wire and the junction box 150a, or between the wire and the battery pack (or inverter) 150b, but is not particularly limited to the connection position.

In particular, the present invention is characterized by blocking the high frequency (noise) flowing through the wiring by coupling the ferrite core to the high-voltage connector in the retainer type in order to block the noise flowing in the wiring caused by the high voltage. In spite of the improvement of the connector function, the assembly and the manufacturing process are simplified to suppress additional manufacturing cost increase, and the appearance of the connector is changed, thereby making it difficult to install.

Specifically, referring to FIG. 3, the high voltage connector 200 according to the present invention has a terminal accommodating part 215 having one end open to receive an external connection terminal therein, and a connector housing in which a wire is connected to one side of the terminal accommodating part. 210, a rear cover 240 mounted on the wire connection side of the connector housing, and a wire retainer 250 inserted into the rear cover to support the wire therein and having a ferrite core embedded therein.

The connector housing is an insulator structure that protects the outer terminal (conductor), and a wire (see FIG. 6A) is connected to one inner side thereof, and the connector shield 220 may be further inserted into the connector housing outside the terminal accommodating portion. The shield serves to shield the inside of the connector to the outside.

A lever 225 may be further added to an outer circumferential surface of the connector housing as an assistant for fixing both male and female connectors. Meanwhile, the connector watertight connector waterproof chamber 234 is supported by the waterproof chamber retainer 232 and may be inserted into the wire connection side opening of the connector housing. Further, a terminal retainer 236 for fixing a terminal to be inserted from the outside is coupled to the mouth opening side of the connector housing.

The rear cover 240 for the overall housing cover is joined as the last structure of the connector housing, and the wire retainer 250 is coupled to the inside of the rear cover. The wire retainer is coupled to one side of the connector and serves as a support for supporting therein a wire (see FIG. 6A) inserted into one end of the connector housing. In the present invention, the wire retainer is used as a ferrite core housing or the ferrite core itself. Used as. Coupling between the rear cover 240 and the wire retainer 250 can be a variety of ways, in the present invention, the projection 242 is formed on one side of the upper cover to enable the mutual fitting coupling, wire retainer 250 An upper portion 254 is formed at the top. The protrusion 242 and the fitting portion 254 are preferably installed on the upper and lower surfaces of the rear cover 240 and the upper and lower surfaces of the wire retainer 250, respectively, to secure the coupling.

4 shows a case in which the wire retainer itself inserted into the rear of the high voltage connector functions as a ferrite core as an embodiment according to the present invention. In this case, the wire retainer 250 is formed entirely of ferrite material. That is, the retaining device for fixing the wiring may be formed of a ferrite material, and filtering of the high current flowing through the wire may be performed while the wire passes through the wire insertion space 252 inside the retainer.

In addition, Figure 5 shows a wire retainer according to another embodiment of the present invention, the wire retainer 250 includes an inner space into which the wire is inserted, the cylindrical ferrite core 260 is mounted in this inner space. The cylindrical ferrite core acts as a direct wrapping of the wire within the wire retainer and the wire retainer functions as a ferrite core housing. In this case, the wire retainer may be formed of a metal or plastic material.

The ferrite core embedded in the wire retainer (or used as the wire retainer itself) is a magnetic component that improves the noise of the high frequency current generated from the wires in the vehicle, and the high frequency noise may cause a malfunction in the electrical equipment inside the vehicle. It suppresses causing abnormal operation.

The high voltage connector according to the present invention is applied between the battery pack and the wiring, between the wiring and the high voltage junction box, or between the wiring and the inverter to block the high frequency noise by acting as a high frequency filter on the ferrite core, which is a magnetic component, thereby improving noise. You can expect the effect. The ferrite core embedded in the high voltage connector passes through valid signals through the wiring and blocks harmful high frequency components. For example, noise in the high permeability band (500KHz-100MHz) in the ferrite core is consumed in a shorted form, and valid signals outside this band are passed without loss.

The high voltage connector of the present invention includes a ferrite core, but is very excellent in assembly. In the existing high voltage connector assembly, the ferrite core is included in the connector while the wire is retained by the wire retainer and no additional process or additional parts are required.

Specifically, referring to FIG. 6A, the connector components, the connector housing, the connector shield, the lever, the connector waterproof chamber, the waterproof chamber retainer, the terminal retainer, and the rear cover, are sequentially combined to complete the overall connector structure. In this process, a part of the wire 300 is pre-coupled inside the connector housing.

The remainder of the wire extends out of the rear cover, and the wire retainer 250 is inserted so as to surround the wire outer circumferential surface. In order to facilitate the assembly process in which the wire retainer surrounds the outer circumferential surface of the wire retainer, the wire retainer is formed in a vertically symmetrical structure with respect to the internal space accommodating the wire 300, and one side of the internal space is incised. And a pair of sub-retainers 250a and 250b which can be folded and restored to each other based on the cut surface. In this case, each of the sub retainers 250a and 250b may be combined into one structure in a state in which the two sub retainers 250a and 250b are aligned to contact the outer circumferential surface of the wire, respectively. When the ferrite core is mounted inside the wire retainer, it is preferable to form or mount the semi-cylindrical ferrite core portion in advance on the inner surface of each sub retainer.
At this time, the ferrite core 260 is also divided into a pair of symmetrical to each other in a divided semi-cylindrical shape is mounted in the internal space of each sub-retainer 250a (250b).

After the wire retainer is coupled to the wire, the assembly process is completed by sliding the wire retainer 250 into the rear cover 240 as shown in FIG. 6B. The final connector structure is shown in Figure 6c.

On the other hand, as another method for removing high frequency noise, for example, a method of applying a ferrite core to the wire itself may be considered.Wiring high frequency blocking method is very difficult to work with and causes a cost increase. In addition, there is a limit that is not suitable as a high frequency noise reduction method.

On the other hand, the high voltage connector according to the present invention can be used as a multifunctional connector having a waterproof performance as well as noise reduction performance according to the high voltage. In particular, when further including a shield inside, a double noise reduction effect can be expected in addition to the ferrite core.

Although the present invention has been exemplarily described through the preferred embodiments, the present invention is not limited to such specific embodiments, and the present invention is within the scope described in the technical idea, specifically, the utility model registration claims. It may be modified, changed or improved in various forms.

200: high voltage connector 210: connector housing
220: connector shield 225: lever
232: waterproofing chamber retainer 234: waterproofing chamber
236: terminal retainer 240: rear cover
250: Wire retainer 260: Ferrite core

Claims (7)

A connector housing having one end opened and accommodating an external connection terminal therein and having a wire connected to one side of the terminal accommodation part;
A rear cover mounted on a wire connection side of the connector housing;
A wire retainer inserted into the rear cover and provided with an inner space into which the wire is inserted as a means for supporting the wire;
And a ferrite core mounted to surround the wire in an inner space of the wire retainer. The noise reduction high voltage connector for a vehicle according to claim 1, wherein the wire retainer is entirely formed of a ferrite material. delete The noise reduction high voltage connector for a vehicle according to claim 1, wherein the wire retainer is formed of a metal or a plastic material. The vehicle noise reduction high voltage connector according to claim 1, wherein the connector housing further includes a connector shielding portion outside the terminal receiving portion. The noise reduction high voltage connector for a vehicle according to claim 1, wherein a waterproof chamber is further mounted on the wire connection side of the connector housing. The ferrite core of claim 1, wherein the wire retainer has a vertically symmetrical structure with respect to the internal space, and is configured as a pair of sub retainers that are open at one side of the internal space to be folded and restored to each other. And a ferrite core divided into pairs which are also symmetrical to each other and mounted in the inner space of each of the sub-retainers, respectively.

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