JPS61260569A - Filter connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to filter connectors, and in particular,
This invention relates to an improvement in the manner in which filter elements are accommodated.

SUMMARY OF THE INVENTION The present invention provides a filter connector that includes a case having a conductive surface that is divided into a back shell and a front shell, and in which a filter element is housed with pins visible therein. Provide a through hole,
While arranging the filter element so that at least a portion thereof is accommodated in the through-hole, the filter element is directed outwardly (so that the end surface is flush with or almost flush with the outer surface of the back shell, and the filter element is By electrically connecting the element and the back shell, the back shell has the function of a grounding conductor, and the filter element can be easily soldered to the back shell and the mechanical strength of the filter element can be improved. This is what we are trying to achieve.

BACKGROUND OF THE INVENTION Conventionally, filter connectors have been available in various types and designs, and these have been changed depending on the situation in which the filter connector is used.

For example, the filter connector shown in FIG. 7 is attached to the edge of a substrate (not shown) in an upright position as shown. Therefore, an L-shaped angle 1 is attached to both ends of a metal case 2 by ports 3 and nuts 4. A through hole 5 provided in the horizontal part of the L-shaped angle 1
is used when attaching this filter connector to the board.

The metal case 2 described above is constructed by combining a separately prepared front shell 6 and back shelf.

Inside such a metal case 2, a plurality of pins 8 are arranged, as shown in FIG. One end of the pin 8 constitutes a terminal portion 9, and the other end constitutes an electrical contact portion 10 with a mating connector (not shown). The reaching filter connector has electrical contacts 10
is a so-called male type that protrudes inside the front shell 6, and therefore, an opening 11 is formed in the front shell 6. The mating connector is a so-called female type, and its electrical contact portion is located at the opening 1 of the front shell 6.
1 and makes contact with the electrical contact portion 10 of the illustrated filter connector.

Each pin 8 is held by an insulating front insert 12 and a back insert 13 arranged within the metal case 2. A cylindrical filter element 14 is arranged in the circular space between the front insert 12 and the back insert 13, with each pin 8 passing through it. The filter element 14 is, for example, a cylindrical capacitor, an LC filter, etc., and an electrode on its inner circumferential surface is electrically connected to the pin 8, and an electrode on its outer circumferential surface! ! The poles are electrically connected to the ground plate 15.

Soldering is used for these connections. A grounding plate 15 is soldered to the back shelf, thereby
electrically connected and mechanically fixed.

Note that, as shown in FIG. 7, the terminal portion 9 of each pin 8 is bent downward. This is so that it can be inserted directly into a hole in a horizontally arranged board and electrically connected.

Problems to be Solved by the Invention It can be seen that the conventional example shown in the drawings described above requires a relatively large number of parts. That is, if we exclude the pin 8 and filter element 14, we have: Front shell 6...1 Back shelf...1 Front insert 12...1 Pack insert 13...1 Ground plate 15...・Single-piece type Angelt: 2 bolts, 3 nuts, 4 nuts, etc. A total of 11 parts are required at least.

Furthermore, soldering between the ground plate 15 and the back shelf or filter element 14, and soldering between the filter element 14 and the pins 8 involves relatively complicated work.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a filter connector in which the back gel functions as a ground plate and a filter element can be easily soldered to the back shell.

Means for Solving the Problem A plurality of pins, one end of which constitutes a terminal portion and the other end of which constitutes an electrical contact portion with a mating connector, are located on the terminal portion side and penetrate through the terminal portion. It is held via an insulating insert in a case that has a conductive surface that is divided into a back shell that leads out to the outside and a front shell that is located on the side of the electrical contact part. A plurality of cylindrical filter elements are arranged, which are held in a state where they penetrate through the filter elements, and the electrodes on the inner circumferential surface of the filter elements are electrically connected to the pins, and the electrodes on the outer circumferential surface of the filter elements are connected to the ground. In the filter connector electrically connected to the case so as to be connected, in the present invention, the back shell is provided with a plurality of through holes through which the pins pass, and the filter element is provided with at least a portion of the through holes through each of the through holes. While being housed in the hole, it is positioned so that its outward facing end surface is flush or nearly flush with the outer surface of the back shell, and the electrode on the outer peripheral surface is soldered to the peripheral edge of each through hole. The pin is characterized in that the pin passes through the filter element and is connected to an electrode on the inner circumferential surface of the filter element by solder.

Effects of the Invention According to the present invention, the filter element is housed in the through holes of the back and shell, and the electrodes on the outer peripheral surface of the filter element are connected to the back shell by soldering.
First, the back shell can have a function as a grounding plate.

Furthermore, since the pin can be held in the back shell via the filter element, the back shell can also function as a conventional back insert.

For this reason, the number of parts can be reduced by the omission of the ground plate and back insert.

Additionally, since the outwardly facing end surface of the filter element is flush or nearly flush with the outer surface of the backshell, soldering at various locations as described above, i.e., the pins, filter element, and backshell can be easily connected to each other. Soldering can also be accomplished in one go by a solder dip. This is because if the outward facing end surface of the filter element is located deeper than the outer surface of the back shell and forms a recess, the solder will fill the recess during solder dipping, causing a short circuit between the pin and the back shell. Although there is a possibility, this is because it can be reliably prevented.

Furthermore, since the outwardly facing end surface of the filter element and the outer surface of the back shell are substantially flush with each other, the mechanical strength of the filter element can also be increased. This is because if the outward facing end surface of the filter element is located protruding from the outer surface of the back shell, when the pin is bent by a force applied to the pin from the outside,
This is because it can prevent damage to the filter element, which may occur.

Embodiment A filter connector 21 which is an embodiment of the present invention is a first embodiment.
As shown in FIGS.

The filter connector 21, which has a structure as shown in FIG. 1 when completed, is composed of parts as shown in FIG. 5. That is, the metal case 22 has a front shell 23
and a back shell 24. Into the metal case 22 are inserted an insulating insert 26 made of resin or the like, a pin 27 formed by punching out a thin metal plate, and a filter element 28 such as a cylindrical capacitor. Although only one pin 27 and one filter element 28 are shown in FIG. 5, the filter connector 21 of this embodiment includes 25 pins 27 and 25 filter elements 28, respectively.

The front shell 23 is integrally formed from a gold fi thin plate by press molding. A cylindrical portion 30 is formed on one side of the flange plate 29, which has a relatively wide surface.

The end surface of the cylindrical portion 30 is an opening 31 . On the other side of the 7-lunge plate 29, a 4 m locking piece 32 and two covers W33 are formed. These covers g! 33 are provided with two cleaning holes 34, respectively. Furthermore, locking holes 35 are provided at both ends of the flange plate 29, respectively.

The insert 26 comprises a protrusion 36 that is received within the cylindrical portion 30 of the front shell 23 and an overhang 37 that then engages the 7-lunge plate 29. A cutout step portion 37a is formed in the overhang portion 37, corresponding to the position of the cleaning through hole 34 described above.

A plurality of pin receivers are provided with holes 38 arranged in two rows, penetrating from the projecting part 37 to the projecting part 36.

The holes 38 of these pin receivers are open at both ends.

One end of the pin 27 constitutes a terminal portion 39, and the other end constitutes an electrical contact portion 4° with a mating connector. Since the filter connector 21 that is being delivered is a so-called female connector, the electrical contact portion 40 has a forked fork shape in order to receive the electrical contact portion of the mating male connector. be done. This fork-shaped electrical contact portion 40 is inserted into the pin receiver hole 38 as shown in FIG. In this way, when the pin 27 is inserted into the hole 38, the pin 27 is prevented from easily falling off from the insert 26.

The filter element 28 may be a cylindrical capacitor or an LC filter as described above. The filter element 28 has a cylindrical shape as a whole, and a flange 41 is formed at one end thereof. Electrodes are formed on the inner circumferential surface and the outer circumferential surface of the filter element 28, respectively.

The terminal portion 39 of the pin 27 described above passes through the filter element 28 .

The back shell 24 is manufactured by die casting from a metal such as a zinc alloy or an aluminum alloy.

Therefore, it is relatively thick. Lock holes 43 corresponding to the lock holes 35 of the front shell 23 are provided at both ends 42 of the back shell 24 . This locking hole 43 is preferably a screw hole. End 4
2 is formed with a bracket portion 44 that roughly extends in the vertical direction. This bracket part 44 has a through hole 4 used when attaching the filter connector 21 to an appropriate board.
5 is provided. Note that the bracket portion 44 does not need to be formed when the L-shaped angle 1 shown in FIG. 7 is used, or when another mounting mode is adopted. Furthermore, a notch 46 into which the locking piece 32 of the front shell 23 fits is formed in the end portion 42 . In addition, the notch 46
8 and the locking piece 32 may not be particularly provided.

The connection W! connects both ends 42 of the back shell 24! 47 is formed. This connection II! A gap 49 is provided between the bracket part 44 and the connecting wall 47 on both sides of the bracket part 47.
A rising wall 48 is formed extending from the end 42 such that a raised wall 48 is formed.

The above-mentioned front shell 23 covers are provided on the upper and lower end surfaces of the connecting wall 47! A stepped portion 50 for positioning J33 is formed.

The connecting wall 47 is also provided with a plurality of circular through holes 51 corresponding to the positions of the holes 38 in the pin receiver described above. The size of these through holes 51 is determined by the size of the filter element 2 described above.
It has been chosen so that it can accept 8. More preferably, when the filter element 28 is inserted into the through hole 51, the seven flange 41 of the filter element 28 comes into contact with the peripheral edge of the through hole 51, and the filter element 2
8 is positioned. Furthermore, when the flange 41 abuts against the inner surface of the back shell 24 in this way, the outward end surface of the filter element 28 is brought into contact with the back shell 24.
It is preferable to be positioned so that it is flush with or substantially flush with the outer surface of.

The front shell 23, back shell 24, insert 26, multiple pins 27, and multiple filter elements 28 described above are assembled as shown in FIGS. 1 to 4. Soldering is performed to connect the parts to each other. The pin 27, which was prepared in a straight state, is bent at a right angle at an appropriate location on the terminal portion 39.

Note that each pin 27 may be used as it is with the same length and straight.

For example, with reference to FIG. 2, the soldering process will be described. Soldering is performed by solder dipping. In this embodiment, a single solder dip achieves soldering at all desired locations. In this case, it is preferable to use a container-shaped mask 52 that receives the bracket portion 44, as shown in phantom lines in FIG. The mask 52 is attached to the bracket portion 44 described above.
It enters into the gap 49 between the front shell 23 and the connecting wall 47, and is arranged so as to reach a position above the lower edge of the cover wall 33 of the front shell 23 in FIG. mask 52
is used to prevent the through hole 45 of the bracket part 44 from being filled with solder, and therefore, when dipped with solder, the filter connector 21 is heated to such an extent that the solder does not flow into the mask 52. Can be submerged in solder. Therefore, if the cover wall 33 is submerged in the solder bath while maintaining the vertical relationship shown in FIG. 2, the lower edge of the cover wall 33 will reach the solder liquid level.
Here, soldering between the front shell 23 and the back shell 24 is achieved.

Also, of course, soldering between the electrode on the inner circumferential surface of the filter element 28 and the pin 27, and the soldering between the electrode on the outer circumferential surface of the filter element 28 and the back shell 24
Soldering with is also accomplished at the same time.

When the above-described soldering is finished, flux may remain inside the case 22 and near the filter element 28. In order to clean this, the cleaning through hole 34 described above is advantageously used. Cleaning hole 3
4, as shown in FIG.
It communicates with a space 53 between the bank shell 24 and the insert 26, and by flowing a cleaning liquid such as trichlorethylene through these cleaning holes 34, the flux can be easily discharged.

In the filter connector 21 obtained as described above, each filter element 28 has its outwardly facing end surface flush with or substantially flush with the outer surface of the connecting wall 47 of the back shell 24.

Therefore, if the outward facing end surface of the filter element 28 is located deeper than the outer surface of the coupling W147 and forms a recess, the solder will be filled in this recess during solder dipping, and the pin 27 and back shell 2 There is a possibility of a short circuit between the two terminals, but this can be prevented. On the other hand, the outwardly facing end surface of the filter element 28 connects IiI! 4
If the filter element 7 is located protruding from the outer surface of the filter element 7, there is a risk that the filter element 28 will be damaged when the pin 27 is bent by a force applied to the pin 27 from the outside, but this can also be prevented.

FIG. 6 is a perspective view showing the arrangement relationship when the filter connector 21 described above is connected to the mating connector 54.

Since the filter connector 21 is a female type as described above,
The mating connector 54 is configured as a male type. The mating connector 54 has a cylindrical part 55 in which the cylindrical part 30 of the filter connector 21 is received, and inside this cylindrical part 55 a protruding electrical contact part 56 of a pin is provided. This electrical contact portion 56 enters into the hole 38 from the opening 31 shown in FIG. 2, for example, and is sandwiched between the fork-shaped electrical contact portions 40. The pin with such an electrical contact 56 is held by an insulating insert 57.

Furthermore, end portions 58 are formed on both sides of the mating connector 54 in a symmetrical positional relationship with the filter connector 21 . Furthermore, a locking hole 60 is formed in the end portion 58 .

Note that the locking hole 4 on the filter connector 21 side described above
Although 3 is a screw hole, the locking hole 60 on the connector 54 side may be a normal hole.

As described above, the lock screw 62 is used to fix the state in which the cylindrical portion 55 of the mating connector 5/I is placed over the cylindrical portion 30 of the filter connector 21 and electrical connection is established. . In this embodiment, the lock screw 62 includes a hexagonal prism head 63 and a male-threaded shank 64, and a female thread 65 is further formed at the tip of the head 63. This lock screw 62 is first
The locking hole 43 whose shaft portion 64 is the aforementioned screw hole
It is screwed inside. When the mating connector 54 is mated, the female threaded portion 65 and the locking hole 60 align, and the set screw 66 is passed through and screwed into the female threaded portion 65. In this way, the two connectors 21 and 5
4 are mechanically fixed to each other.

Note that the special shaped lock screw 62 as described above
Alternatively, an ordinary screw may be used instead, by passing it through the locking hole 60 from the position of the set screw 66 and then screwing it into the locking hole 43.

In FIG. 6, a male type connector 54 is shown as the mating connector 54. This male connector 54 can also be realized with substantially the same configuration as the female filter connector 21. That is, the present invention can be applied to both female and male filter connectors by simply changing the shape of the electrical contact portion of the pin and the insert.

The connector 54 shown in FIG. 6 is an example thereof, and when looking at its appearance, the one designated by "67" is the front shell, and the one designated by "68" is the back shell. The combined state of the front shell 67 and back shell 68 and the positional relationship of the filter element and pins with respect to the back shell 68 are substantially the same as those of the filter connector 21. Further, a cleaning through hole 69 is formed in the connector 54 as well.

As described above, one embodiment of the present invention has been described with reference to the drawings, but other embodiments are also possible although not shown.

For example, the back shell 24 may be made of plastic and have its surface plated with metal.

Further, the back shell 24 may be formed by cutting metal.

Further, if a filter element having a flange 41 is used as in the illustrated embodiment, it is possible to easily achieve flush or nearly flush positioning between the outward facing end surface of the filter element and the outer surface of the back shell. However, if such an advantage is not desired, a filter element without flanges may be used.

Further, in the above-mentioned embodiment, the insert 26 formed as a separate component from resin was used, but a pin formed by insert molding may also be used.

Further, the cleaning hole is not necessarily required.

Further, the front shell and the back shell may be fixed to each other by caulking or screwing.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a filter connector 21 according to an embodiment of the present invention. FIG. 2 is a plan view of the filter connector of FIG. 1, with a portion cut away to show a cross section. FIG. 3 is a side view of the filter connector 21 of FIG. 1. FIG. 4 is a cross-sectional view of filter connector 21 of FIG. 1, showing a cross section through cleaning hole 34 and one pin 27. FIG. FIG. 5 is an exploded perspective view of parts constituting the filter connector 21 of FIG. 1. FIG. 6 is a perspective view showing the positional relationship for achieving connection between the filter connector 21 of FIG. 1 and the mating connector 54. FIG. 7 is a perspective view showing a conventional filter connector. FIG. 8 shows the filter connector of FIG. 7 in cross section through pin 8. In the figure, 21 is a filter connector, 22 is a metal case, 23 is a front shell, 24 is a back shell, 2
6 is an insert, 27 is a pin, 28 is a filter element, 3 is a terminal portion, 40 is an electrical contact portion, 41 is a flange, 51 is a through hole, and 54 is a mating connector. Prologue to the drawings (no change in content) Atsushi 30 No. 4 [F] Figure 7 and Figure 8 Procedural amendments (formula) June 26, 1985

Claims (2)

[Claims] (1) A bag in which a plurality of pins, one end of which constitutes a terminal portion and the other end of which constitutes an electrical contact portion with a mating connector, are located on the terminal portion side and extend outside through the terminal portion. It is held via an insulating insert in a case having a conductive surface that is divided into a shell and a front shell located on the side of the electrical contact part, and the pin is further inserted into the case. A plurality of cylindrical filter elements are arranged to be held in this state, an electrode on the inner circumferential surface of the filter element is electrically connected to the pin, and an electrode on the outer circumferential surface of the filter element is grounded. In the filter connector electrically connected to the case, the back shell is provided with a plurality of through holes through which the pins pass, and the filter element has at least a portion inside each of the through holes. is positioned such that its outward facing end surface is flush or substantially flush with the outer surface of the back shell, and electrodes on the outer peripheral surface are soldered to the peripheral edge of each through hole, The filter connector is characterized in that the pin passes through the filter element and is connected to an electrode on an inner circumferential surface of the filter element by solder. (2) A flange is formed at one end of the filter element, and when the flange comes into contact with the inner surface of the back shell, the outward end surface of the filter element is flush with or almost flush with the outer surface of the back shell. 2. A filter connector according to claim 1, wherein the filter connector is positioned in unison.