Patent Application
20130194766
1. Field of the Invention
The present invention relates to the signal filter mounting technology and more particularly, to a signal filter mounting structure, which uses a box to hold signal filters on a circuit board, enabling the end portions of the conductor wires of the signal filters to be respectively extended out of respective wire management grooves at opposing front and back sides of the box and soldered to respective metal contacts at the circuit board, saving much installation labor and cost and ensuring high soldering quality.
2. Description of the Related Art
Following fast development of computer technology, desk computers and notebook computers are well developed and widely used in different fields for different applications. It is the market trend to provide computers having high operating speed and small size. Further, network communication technology brings people closer, helping people to gather information about living, learning, working and recreational activities.
Further, to fit the market trend to create computers and electronic products having light, thin, short and small characteristics, electric connectors for computer and electronic product must be small-sized. Further, using electronic connectors in a computer must consider the problem of interfering noises that include internal noises and surrounding electromagnetic waves. Further, a RJ45 connector is for digital communication application. To eliminate signal interference, a network connector may have a filter module built therein to remove noises from incoming signal, enabling the filtered effective signal to be transmitted to an external control circuit interface for conversion into a serial data signal for processing in a data processing system.
During installation of the filter devices B22, the end portions of the copper wires 13221 of the filter devices 1322, after removal of the insulation, are respectively pressed on the respective solder points B23 at the circuit board B2, and then electrically bonded to the respective solder points B23 by hand soldering or spot soldering. During the soldering operation, the end portions of the copper wires B221 may be forced out of position accidentally by an external force, causing inaccurate or poor soldering and affecting the soldering quality and yield rate. This conventional soldering method wastes much labor and cost.
Therefore, there is a strong demand for a signal filter mounting design, which eliminates the aforesaid problems.
The present invention has been accomplished under the circumstances in view. It is therefore an object of the present invention to provide a signal filter mounting structure, which saves much soldering labor and cost, ensuring high quality soldering and high yield rate.
To achieve this and other objects of the present invention, a signal filter mounting structure comprises a circuit board, a box, and a plurality of signal filters. The box is mounted on the circuit board between two lines of metal contacts at the circuit board, comprising an accommodation chamber, a plurality of upright bars arranged in a line at each of opposing front and back sides relative to the accommodation chamber, and a plurality of wire management grooves respectively defined between each two adjacent ones of the upright bars at each of the two opposing front and back sides relative to the accommodation chamber. The signal filters are accommodated in the accommodation chamber of the box in reversed directions, each comprising a magnetic coil and a plurality of conductor wires wound on the magnetic coil. The end portions of the conductor wires of the signal filters being respectively extending out of the wire management grooves of the box and respectively soldered to the metal contacts of the circuit board.
Further, the circuit board can be made having an opening, for example, a mounting slot, broken hole or through hole configured to receive the box.
In an alternate form of the present invention, the signal filter mounting structure comprises a plurality of circuit boards symmetrically disposed at two sides, a box set between the circuit boards, and a plurality of signal filters mounted in the box with the end portions of the conductor wires thereof respectively extending out of respective wire management grooves at the opposite front and back sides of the box and respectively soldered to respective metal contacts of the circuit boards.
Referring to
The box 1 comprises an accommodation chamber 11 having a top opening 111 for accommodating the signal filters 2, a plurality of upright bars 121 arranged in line at each of opposing front and back sides 112 relative to the accommodation chamber 11, a plurality of wire management grooves 12 respectively defined between each two adjacent upright bars 121 in communication between the accommodation chamber 11 and the outside space, and a plurality of bottom hooks 13 symmetrically extended from the bottom edges of opposing left and right sides relative to the accommodation chamber 11.
The signal filters 2 are accommodated in the accommodation chamber 11 of the box 1, each comprising a magnetic coil 21, and a plurality of conductor wires 22 wound on the magnetic coil 21. Each conductor wire 22 has opposing front and rear ends thereof respectively terminating in a respective end portion 221 that consists of multiple metal filaments.
The circuit board 3 comprises a plurality of metal contacts 31 arranged in two lines on one (or each) of the opposing top and bottom walls thereof in perfect alignment (or in a staggered manner), and a plurality of hook holes 32 cut through the top and bottom walls between the two lines of metal contacts 31 for receiving the bottom hooks 13 of the box 1.
During installation, insert the magnetic coils 21 of the signal filters 2 through the top opening 111 into the accommodation chamber 1 and set the magnetic coils 21 in the accommodation chamber 11 of the box 1 properly in position in two reversed directions, and then pull the end portions 221 of the conductor wires 22 of the signal filters 2 along the bottom wall 113 of the accommodation chamber 11 to the outside of the box 1 through the wire management grooves 12 respectively, and then attach the box 1 to the top wall of the circuit board 3 between the two lines of contacts 31 to force the respective bottom hooks 13 into engagement with the hook holes 32 of the circuit board 3. Thus, the box 1 and the circuit board 3 are firmly secured together.
After installation of the box 1 with the signal filters 2 in the circuit board 3, the end portions 221 of the conductor wires 22 of the signal filters 2 are extended along the top wall of the circuit board 3 and respectively attached to the respective metal contacts 31 of the circuit board 3. Thereafter, the end portions 221 are respectively soldered to the respective metal contacts 31 by spot soldering or reflow soldering, electrically connecting the signal filters 2 to the circuit board 3. The structural design of the box 1 facilitating installing the signal filters 2, enabling the end portions 221 of the conductor wires 22 of the signal filters 2 to be straightened and kept apart from one another and then respectively extended through the wire management grooves 12 for bonding to the respective metal contacts 31 accurately. Thus, the use of the box 1 facilitates alignment and bonding between the end portions 221 and the metal contacts 31, saving much labor and cost and ensuring a high soldering quality and a high yield rate.
The design of the signal filter mounting structure in accordance with the present invention can be used in an interface card or electrical connector.
The circuit board 3 of the signal filter module is mounted in the electrical network connector 4. The first conducting terminals 33 of the signal filter module are curved conducting terminals installed in one side of the circuit board 3 opposite to the box 1 and the signal filters 2 and electrically connected to the metal contacts 31 of one line of metal contacts 31 on the circuit board 3, with the middle curved portions thereof set in respective terminal grooves in the front receiving chamber 40 of the first housing 41. The terminal holder 34 is attached to the circuit board 3 adjacent to the box 1. The second conducting terminals 341 of the signal filter module are installed in the terminal holder 34 and respectively bonded to the metal contacts 31 of the other line of metal contacts 31 on the circuit board 3, and downwardly extending out of the bottom side of the terminal holder 34 for bonding to an external circuit board. Further, the circuit board 3 of the signal filter module has a circuit layout design. Further, the at least one electronic component 35 of the signal filter module can be a resistor network, capacitor, rectifier, and/or any other electronic device with wave-filtration function for removing noises from the transmitting signal to ensure signal transmission stability.
In conclusion, the invention provides a signal filter mounting structure consisting of a box, a plurality of signal filters and at least one circuit board, as shown in
Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.
