CN201408884Y - A filter connector - Google Patents

Abstract

The utility model discloses a filter connector, which comprises a conductive connector housing and more than one contact piece installed inside and a filter element corresponding to each contact piece, each contact piece and the corresponding filter element and the connector shell The body is conducted to form a filter circuit, and the contacts and the connector housing are connected through a corresponding discharge resistor to achieve equipotentiality. The at least one discharge resistor and its corresponding contact and contact The filter element corresponding to the component and the connector housing are conducted to form a discharge circuit. When current passes through each contact piece of the utility model, the capacitor or inductance stores charges, and when the current on the contact piece is disconnected, the accumulated charge on the capacitor and inductance can convert energy into heat through the discharge resistor, thereby releasing At the same time, the conduction of the discharge resistor can keep the contact parts and the connector housing at the same potential, and avoid electrostatic discharge from affecting various sensitive devices inside the user equipment.

Description

A filter connector

technical field

The utility model relates to the technical field of filter connectors.

Background technique

Existing filter connectors generally use filter components with capacitance and/or inductance, but the residual charge in the filter components cannot be released in time during use, thereby affecting the filtering effect or affecting other equipment; in addition, the contact of the existing filter connectors Due to the lack of anti-static design of components, electrostatic discharge often affects the work of various sensitive components inside the user's equipment.

Utility model content

The purpose of the utility model is to provide a filter connector which can consume the residual charge in time and keep the contact piece and the socket housing at the same potential to avoid electrostatic discharge.

The technical solution of the utility model is: a filter connector, including a conductive connector housing and more than one contact piece installed inside and a filter element corresponding to each contact piece, each contact piece and the corresponding filter element and The filter circuit is formed by the conduction of the connector housing, which is characterized in that: each contact piece and the connector housing are conducted through a corresponding discharge resistor to realize equipotential, and the at least one discharge resistor and its The corresponding contact piece, the filter element corresponding to the contact piece, and the connector housing are conducted to form a discharge circuit.

The discharge resistor is connected between the contact piece and the connector housing, or between the electrode and the contact piece of the filter element conducting with the connector housing.

The filter element includes two plate capacitors arranged at intervals in the front and rear for each contact piece to penetrate and an inductance set on each contact piece. The capacitor outer electrodes of the outer rings of the front and rear two plate capacitors are in contact with the connector housing. Conduction, the front and rear two-plate capacitors are provided with contact insertion holes corresponding to each contact with capacitor internal electrodes, and the capacitor internal electrodes in the contact insertion holes of each contact and the front and rear two-plate capacitors Contact conduction; the discharge resistor is connected between each contact piece and the capacitor outer electrode of any one of the plate capacitor outer rings, or between each contact piece and the connector housing.

The filter element is composed of one or more of plate capacitors, tube capacitors, chip capacitors, inductors, and resistors. The filter circuit is a capacitor filter circuit, an inductor filter circuit, a capacitor-inductor filter circuit or a π-type filter circuit. filter circuit.

The outside of the connector housing is provided with a conductive rubber pad for conducting with the casing during installation.

In the utility model, there is a discharge resistor connected between each contact piece and the conductive connector housing, and the discharge resistor is connected with the contact piece, the filter element, the connector housing socket housing to form a discharge circuit , so the discharge resistor is connected with the filter element in the connector housing and the filter circuit at the same time: capacitor or inductance. When the current passes through each contact, the capacitor or inductance stores charge. When open, the charge accumulated on the capacitor and inductance can convert the energy into heat through the bleeder resistor, thereby releasing the residual charge, and at the same time, the conduction of the bleeder resistor can keep the contact parts and the connector housing at the same potential to avoid static electricity. The release affects various sensitive devices inside the user's equipment.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic diagram of the circuit principle of the utility model.

Detailed ways

As shown in Figure 1, the filter connector of the present invention includes a socket housing 1 of metal material and a plurality of contacts 2 and filter elements installed inside it, and the filter element includes two contacts arranged at intervals before and after each 2 The plate capacitors 3 and 7 inserted through it and the inductance 4 set on each contact 2, the outer electrodes of the outer rings of the front and rear two plate capacitors 3 and 7 are in contact with the socket housing 1, and the front and rear Two-plate capacitors 3 and 7 are provided with contact insertion holes corresponding to each contact 2 with capacitor internal electrodes, and the capacitance in the contact insertion holes of each contact 2 and the front and rear two-plate capacitors 3 and 7 The inner electrodes are in contact with each other, and each contact piece 2, plate capacitors 3, 7 and inductor 4 form a complete filter circuit. A conductive rubber pad 5 is provided outside the socket housing 1. When the socket housing 1 is connected to the user's casing, the conductive rubber pad 5 is connected to the grounded casing to form a filter circuit. A bleeder resistor 6 is connected between each contact piece 2 and the capacitor outer electrode of the plate capacitor 7 outer circle. Since the socket housing 1 is connected to the capacitor outer electrode of the plate capacitor 7, the bleeder resistor 6 is simultaneously connected with the capacitor outer electrode of the plate capacitor 7. The socket shell 1 and the external electrode of the plate capacitor are connected, and the bleeder resistor 6 can convert the residual charge in the plate capacitor into heat energy to be consumed, and can also keep each contact piece 2 and the socket shell 1 at the same potential. This design can avoid affecting the work of various sensitive devices inside the user equipment due to electrostatic discharge.

As shown in Figure 2, the schematic diagram of the circuit principle of the utility model, in the figure C represents the capacitance, L represents the inductance, R represents the discharge resistance. The capacitors and inductors connected to each contact 2 form a multi-stage low-pass filter circuit. When current passes through each contact 2, the capacitor and inductance store charges. When the current on the contact 2 is disconnected, the charges accumulated on the capacitor and inductance pass through the discharge resistor R, and the resistance converts energy into heat , and release the residual charge. The bleeder resistor R can also ensure the equal potential between each contact piece 2 and the socket housing 1 to avoid electrostatic discharge.

In the above-mentioned embodiment, each contact piece and filter element form a filter circuit, and the filter element is not limited to one composition method in the above-mentioned embodiment, and the capacitance in the filter element can be plate type, tube type or patch and other forms Capacitors can have inductance or no inductance. As for the formed filter circuit, it is not limited to a composition method in the above-mentioned embodiment. The filter circuit can be a capacitor filter circuit (C type), an inductance filter circuit (L shape), an LC filter circuit Filter circuit or π-type filter circuit and other forms of filter circuits. Since the composition of various filter components and filter circuits is a common method used in filter connectors to achieve the purpose of filtering, the utility model will not describe them in detail one by one, and those only change the filter circuit or its filter components. The technical solutions formed are different from the above-mentioned embodiments, but the differences should be equivalent technical features, which should fall into the protection scope of the present utility model.

Claims (5)

1. A filter connector, including a conductive connector housing and more than one contact piece installed inside and a filter element corresponding to each contact piece, each contact piece conducts with the corresponding filter element and the connector housing A filter circuit is formed, which is characterized in that: each contact piece and the connector housing are connected through a corresponding discharge resistor to realize equipotential, and the at least one discharge resistor and its corresponding contact piece, and The filter element corresponding to the contact piece and the connector housing are conducted to form a discharge circuit. 2. The filter connector according to claim 1, characterized in that: the discharge resistor is connected between the contact piece and the connector housing, or connected to the filter element conducting with the connector housing between the electrodes and the contacts. 3. The filter connector according to claim 2, characterized in that: the filter element includes two plate-type capacitors arranged at intervals in front and back for each contact piece to pass through, and an inductor set on each contact piece, the front 1. The capacitor outer electrode of the outer ring of the rear two-plate capacitor is in contact with the connector housing. The front and rear two-plate capacitors are provided with contact insertion holes corresponding to the contacts and have capacitor inner electrodes. Each contact and The capacitor internal electrodes in the contact insertion holes of the front and rear two-plate capacitors are in contact with each other; the discharge resistor is connected between each contact and the capacitor outer electrode of any one of the plate capacitor outer rings, or connected to between each contact and the connector housing. 4. The filter connector according to claim 1 or 2, characterized in that: the filter element is composed of one or more of plate capacitors, tube capacitors, chip capacitors, inductors, and resistors, and the The filter circuit is a capacitor filter circuit, an inductance filter circuit, a capacitor-inductor filter circuit or a π-type filter circuit. 5. The filter connector according to claim 1, wherein a conductive rubber pad is provided on the outside of the connector housing for conducting with the housing during installation.

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