CN214900809U

CN214900809U - Network filter shell

Info

Publication number: CN214900809U
Application number: CN202120054010.9U
Authority: CN
Inventors: 陈中元
Original assignee: Dongguan Fuhang Electronic Technology Co ltd
Current assignee: Dongguan Fuhang Electronic Technology Co ltd
Priority date: 2021-01-09
Filing date: 2021-01-09
Publication date: 2021-11-26
Anticipated expiration: 2031-01-09

Abstract

The utility model discloses a network filter shell, including a plastic shell, and set up in two sets of terminal pin groups of the relative both sides of plastic shell, wherein, this terminal pin group comprises several terminal pins parallel arrangement, every terminal pin mainly by outer terminal pin and interior terminal pin body coupling, and form the first kink that imbeds in the plastic shell between this outer terminal pin and interior terminal pin, and be located the plastic shell outside on this outer terminal pin and be formed with second kink and third kink; a staggered pin is formed on the first bending part. The utility model discloses a network filter shell, structural design is reasonable, is favorable to promoting wire winding efficiency and welding yield, ensures that electric conductivity is good, promotes the product security performance.

Description

Network filter shell

Technical Field

The utility model relates to an electronic component especially relates to a network filter shell.

Background

In the conventional electronic component housing with metal terminal pins, a plurality of terminal pins are arranged in a row, and a certain gap is maintained between adjacent terminal pins. Because the terminal pin of prior art appears even tin easily at soldering tin operation in-process because the interval undersize, causes outward appearance and functional bad, and the spacing of while narrow has improved the degree of difficulty of reason enameled wire operation, has reduced work efficiency.

SUMMERY OF THE UTILITY MODEL

Not enough to the aforesaid, the utility model aims to provide a network filter shell, structural design is reasonable, is favorable to promoting wire winding efficiency and welding yield, ensures that electric conductivity is good, promotes the product security performance.

The utility model discloses a reach the technical scheme that above-mentioned purpose adopted and be:

a network filter shell is characterized by comprising a plastic shell and two groups of terminal pin groups arranged on two opposite sides of the plastic shell, wherein the terminal pin groups are formed by arranging a plurality of terminal pins in parallel, each terminal pin is mainly formed by integrally connecting an outer terminal pin and an inner terminal pin, a first bent part embedded into the plastic shell is formed between the outer terminal pin and the inner terminal pin, and a second bent part and a third bent part are formed on the outer terminal pin and positioned outside the plastic shell; a staggered pin is formed on the first bending part.

As a further improvement of the utility model, the outer terminal pin tip is formed with a welding end, is formed with on this welding end and climbs the tin inclined plane.

As a further improvement of the utility model, a wire hanging groove is formed on the two opposite side edges of the inner terminal pin respectively.

As a further improvement of the utility model, the terminal surface is formed with one respectively and cuts the wire casing corresponding to two sets of terminal pin group positions under the plastic shell, and this secant groove is located between outer terminal pin and the inner terminal pin.

As a further improvement, a wire arrangement groove is formed on the inner side surface of the plastic shell corresponding to the pin position of the inner terminal.

As a further improvement of the utility model, two ends of the plastic shell are respectively formed with a half of retaining walls.

The utility model has the advantages that:

(1) through the setting of dislocation pin on the terminal pin, be favorable to network filter shell to have sufficient pin interval space to come the wire winding when the wire winding to promote wire winding efficiency. Meanwhile, due to the arrangement of the staggered pins, the phenomenon of tin connection between two terminal pins can be prevented when the terminal pins of the network filter shell are subjected to tin soldering, so that the phenomenon of poor short circuit can be effectively prevented.

(2) The utility model discloses network filter shell, structural design is reasonable, not only does benefit to follow-up wire winding and goes on smoothly fast, promotes work efficiency; moreover, when the solder paste is welded on a PCB (printed circuit board) in the follow-up process, the solder paste can smoothly climb the solder coating welding end, so that the welding firmness is improved, the rosin joint is prevented from being generated, the good conductivity is ensured, and the safety performance of the product is improved.

The above is an overview of the technical solution of the present invention, and the present invention is further explained with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a flow chart of the present invention;

FIG. 2 is a schematic structural diagram of step (1.1) of the present invention;

FIG. 3 is a schematic structural diagram of the step (1.2.1) of the present invention;

FIG. 4 is a schematic structural diagram of the step (1.2.2) of the present invention;

FIG. 5 is a schematic structural diagram of step (1.3) of the present invention;

FIG. 6 is a schematic structural diagram of step (1.4) of the present invention;

FIG. 7 is a schematic structural diagram of step (2) of the present invention;

FIG. 8 is a schematic structural diagram of step (3) of the present invention;

fig. 9 is a schematic front structural view of the housing of the network filter according to the present invention;

fig. 10 is a schematic diagram of a back structure of the middle network filter housing according to the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings and preferred embodiments.

Referring to fig. 1, an embodiment of the present invention provides a method for processing a network filter housing, including the following steps:

(1) terminal pin punching press integrative bending shaping:

(1.1) punching an inner precut groove: a plurality of internal pre-cut grooves 11 are punched on the material sheet 1, and the material sheet 1 can be made of copper sheets as shown in figure 2;

(1.2) stamping and forming the terminal pin: a plurality of terminal pins 120 are respectively punched on the material sheet 1 corresponding to each position of the inner precut groove 11, so that a plurality of terminal pin groups 12 corresponding to the plurality of inner precut grooves 11 one by one are obtained, and an inner connecting rod 13 and an outer connecting rod 14 for connecting the plurality of terminal pin groups 12 into a whole are formed on two sides of the material sheet 1, as shown in fig. 3 and 4;

(1.3) punching external precut grooves: a plurality of external precutting grooves 15 are respectively punched on one side of the terminal pin group 12 close to the external connecting rod 14, and each terminal pin 120 of the terminal pin group 12 is correspondingly provided with one external precutting groove 15, as shown in fig. 5;

(1.4) stamping and bending: simultaneously stamping and bending the plurality of terminal pin groups 12, specifically bending the terminal pin groups by 90 °, and respectively forming a first bending part 16 on each terminal pin 120, wherein the first bending part 16 is formed between the inner precut groove 11 and the outer precut groove 15 to form a semi-finished product, as shown in fig. 6;

(2) injection molding of a plastic shell: arranging the semi-finished products 10 two by two symmetrically, injection molding a plurality of plastic shells 2 on the symmetrically arranged semi-finished products 10, wherein each plastic shell 2 is formed on the first bending part 16 of the two terminal pin groups 12 on the two symmetrically arranged semi-finished products 10, an outer terminal pin group 121 and an inner terminal pin group 122 are formed on the plastic shells 2, the outer terminal pin group 121 is connected with the outer connecting rod 14, and the inner terminal pin group 122 is connected with the inner connecting rod 13, as shown in fig. 7;

(3) bending and cutting the outer connecting rod into a whole: simultaneously stamping and bending the outer terminal pin group 121, and respectively forming a second bending part 17 and a third bending part 18 on each outer terminal pin, wherein the second bending part 17 and the third bending part 18 are formed between the first bending part 16 and the outer pre-cutting groove 15; at the same time, the outer link 14 is cut along the outer pre-cut groove 15, as shown in fig. 8;

(4) electroplating: electroplating the surfaces of the outer terminal pin group 121 and the inner terminal pin group 122, so that metal protection layers are respectively formed on the outer surfaces of the outer terminal pin group 121 and the inner terminal pin group 122; specifically, metal nickel or metal tin is plated on the surfaces of the outer terminal pin group 121 and the inner terminal pin group 122.

(5) Removing the inner connecting rod to obtain a finished product: the whole body is placed into a jig track for positioning, the inner connecting rod is broken off along the inner precut groove, the inner connecting rod is separated from the inner terminal pin group on the plastic shell, and a plurality of network filter shells with metal terminal pins are manufactured, as shown in fig. 9;

(6) and (4) full inspection: the appearance of the plastic shell of the network filter shell and the terminal pins is synchronously inspected completely, and the plurality of network filter shells are pushed into the plastic suction pipe through the jig track to be packaged after the complete inspection, so that the terminal pins are protected, and the oblique deformation is prevented.

In the embodiment of the present year, before the step (1), a trimming step is performed to trim two side edges of the material sheet 1 (i.e., the subsequent edges of the inner connecting rod 13 and the outer connecting rod 14), so as to ensure smooth feeding of the material sheet 1 during stamping, smooth material sheet 1, accurate sizes of two ends of the inner connecting rod 13 and the outer connecting rod 14, and facilitate accurate positioning and glue sealing of terminal pins placed in an injection mold in the subsequent manufacturing process.

The injection molding process is carried out by adopting the double-lower-die turntable injection molding machine, and the injection molding efficiency is high.

In step (1) of this embodiment, the material sheet 1 is placed in a set of stamping die, and then the plurality of terminal pin sets 12 and the bending structures can be formed, that is, the terminal pins and the bending structures can be formed at one time by one process, so that the process is greatly simplified, and the processing efficiency is improved.

In the step (1.1): a plurality of corresponding pre-cut half grooves are respectively punched on the upper surface and the lower surface of the material sheet 1, and each corresponding two pre-cut half grooves on the upper surface and the lower surface of the material sheet form an inner pre-cut groove 11. After the subsequent terminal pin 120 is formed, the precut half-groove is formed on both sides of the terminal pin 120, so that the internal connecting rod 13 can be conveniently and rapidly broken off in the subsequent process.

The step (1.2) comprises the following steps:

(1.2.1) punching a plurality of inner terminal pins 1201 on the material sheet 1 at positions corresponding to each inner pre-cut groove 11, respectively, as shown in fig. 3;

(1.2.2) a plurality of outer terminal pins 1202 connected to the inner terminal pins 1201 in a one-to-one correspondence are further punched out of the web 1 to form a plurality of terminal pin groups 12, as shown in fig. 4.

After the plurality of terminal pin groups 12 are molded in the step (1.2), the plurality of terminal pin groups 12 are connected into a whole by the inner connecting rod 13 and the outer connecting rod 14, so that each procedure can be simultaneously carried out on the plurality of terminal pin groups 12 in the follow-up process, and the processing efficiency and the product quality are improved. Specifically, the plurality of terminal pins 120 of the terminal pin group 12 are connected into a whole by the connection action of the outer connecting rod 14, so that the plastic shell can be conveniently injection molded on the two oppositely arranged terminal pin groups 12; the strength and firmness of the terminal pins 120 in the whole semi-finished product can be improved by the connecting action of the inner connecting rod 13, and the terminal pins 120 are prevented from being bent and deformed.

In the step (1.2.1), when a plurality of inner terminal pins 1201 are punched, a wire hanging groove 19 is formed on each of two sides of a position on the plurality of inner terminal pins 1201, which is close to the inner pre-cut groove 11, as shown in fig. 3.

In the step (1.3) of this embodiment, the external precut groove is punched, so that the external connecting rod 14 can be cut off from the terminal pin group 12 later.

Meanwhile, in the step (1.3), a tin climbing slope 12022 is formed on the inner side edge of the outer precut groove 15 far from the outer link 14, as shown in fig. 7. After the outer link 14 is cut off, the end of the terminal pin 120 is exposed to the tin-climbing inclined surface 12022, and when a subsequent client side is soldering a board, solder can easily climb the tin through the tin-climbing inclined surface 12022, so that the adhesive force of the solder is improved.

Between the step (2) and the step (3), a baking step is further included, and baking is carried out for 2h-3h at the temperature of 135-145 ℃ so as to release the internal stress of the product.

After the baking step, performing a burr treatment step: placing the baked semi-finished product into a track of a sand blasting machine, opening a conveying belt to adjust a sand blasting gun head, and aligning the rough edge part to be processed of the semi-finished product; opening an air pressure switch of the sand blasting gun head, and adjusting the air pressure to 25-35 KG; and opening the sand sucker, opening the conveyer belt and each sand blasting air pressure, and performing sand blasting to remove burrs.

In this embodiment, as shown in fig. 6 to 8, after 10 terminal pin groups 12 are formed on one web 1 at a time, 10 plastic cases are formed on two same webs 1, so that the processing efficiency can be greatly improved. After the step (5), 10 finished products can be obtained at one time. Of course, the number of the once-formed finished products can be increased or decreased according to specific needs.

According to the processing method of the network filter shell, the terminal pins and the bending structure can be formed at one time through one set of stamping die and one procedure, so that the process is greatly simplified, and the processing efficiency is improved. Meanwhile, the plurality of terminal pin groups 12 are connected into a whole through the forming inner connecting rod 13 and the outer connecting rod 14, so that each procedure can be simultaneously carried out on the plurality of terminal pin groups 12 in the follow-up process, and the processing efficiency and the product quality are improved. Specifically, the plurality of terminal pins 120 of the terminal pin group 12 are connected into a whole by the connection action of the outer connecting rod 14, so that the plastic shell can be conveniently injection molded on the two oppositely arranged terminal pin groups 12; the strength and firmness of the terminal pins 120 in the whole semi-finished product can be improved by the connecting action of the inner connecting rod 13, and the terminal pins 120 are prevented from being bent and deformed. Meanwhile, the electroplating process is placed after the terminal pin bending and outer connecting rod cutting process, the protective layer can be guaranteed to be electroplated on the surface of the terminal pin, and the electroplating protective layer cannot be damaged, so that the quality of the whole product is guaranteed, and the terminal pin of the product can be stably welded on a PCB (printed circuit board) by a subsequent client.

The embodiment of the utility model provides a network filter shell that implements above-mentioned method to process is still provided, as shown in fig. 9 and fig. 10, including a plastic casing 2, and set up in two sets of terminal pin group 12 of the relative both sides of plastic casing 2, wherein, this terminal pin group 12 comprises several terminal pins 120 parallel arrangement, every terminal pin 120 mainly is formed by outer terminal pin 1202 and interior terminal pin 1201 body coupling, and is formed with the first kink 16 of embedding plastic casing 2 between this outer terminal pin 1202 and interior terminal pin 1201, just is located the plastic casing 2 outside on this outer terminal pin 1202 and is formed with second kink 17 and third kink 18.

In this embodiment, wire hanging grooves 19 are formed on both opposite sides of the inner terminal lead 1201. Meanwhile, a wire cutting groove 21 is formed on the lower end surface of the plastic housing 2 at a position corresponding to the two terminal pin groups 12, and the wire cutting groove 21 is located between the outer terminal pin 1202 and the inner terminal pin 1201. Because a magnetic core needs to be arranged in the inner cavity of the plastic shell 2 of the product, the magnetic core is wound with an enameled wire, the enameled wire needs to be wound in the wire hanging groove 19 of the inner terminal pin 1201, and the enameled wire is fixed on the inner terminal pin 1201 after being wound for several circles. The wire ends left by the enameled wires wound around each inner terminal pin 1201 are cut off along the wire cutting groove 21 by a blade. The arrangement of the line cutting groove 21 is beneficial to stable line cutting, the position is accurate, and the working efficiency is improved.

In this embodiment, a solder terminal 12021 is formed at the end of the outer terminal lead 1202, and a solder-climbing slope 12022 is formed on the solder terminal 12021. Outer terminal pin 1202 end sets up soldering terminal 2021 to form on soldering terminal 12021 and climb tin inclined plane 12022, the purpose is for the soldering terminal of wedge structure in the leg position of the network filter shell that makes, easy soldering tin when making shell leg portion and PCB board welding, be favorable to tin along wedge structure's inclined plane (climb tin inclined plane 12022 promptly) climb tin parcel soldering terminal 12021, improve the welding firmness, prevent that the rosin joint from producing, ensure that electric conductivity is good, promote product security performance.

In this embodiment, a misalignment lead 161 is formed on the first bending portion 16, as shown in fig. 5. The arrangement of the staggered pins 161 is beneficial to the network filter shell to have enough pin space for winding when winding, so that the winding efficiency is improved. Meanwhile, the arrangement of the dislocation pin 161 can prevent the phenomenon of tin connection between two terminal pins when the terminal pins of the network filter shell are soldered, thereby effectively preventing the phenomenon of poor short circuit.

In this embodiment, a wire arrangement groove 22 is formed on the inner side surface of the plastic housing 2 at a position corresponding to the inner terminal lead 1201.

The arrangement of the wire management groove 22 has the following three advantages:

(1) the enameled wire is wound to the wire hanging groove 19 of the inner terminal pin 1201 along the wire arranging groove 22 and fixed, so that the winding efficiency is improved;

(2) the enameled wire and the enameled wire on the previous inner terminal pin 1201 are isolated from each other, and poor short circuit is prevented;

(3) the distance between the enameled wire and the inner terminal pin 1201 can be shortened, and if the enameled wire is far away from the winding position of the inner terminal pin 1201, the short circuit and disconnection of the enameled wire are easily caused by the overlong white wire during soldering.

Meanwhile, two ends of the plastic shell 2 are respectively formed with a half retaining wall 23. The purpose of the semi-retaining wall 23 is to provide enough space for one terminal pin at the extreme edge of the housing edge, so that the 4 terminal pins arranged at the extreme edge can be wound conveniently, and the winding efficiency is improved.

In this embodiment, the upper surface of the plastic shell 2 is a textured road surface, which is beneficial to clear surface printing; the peripheral side surface is a smooth surface; the medial surface of lower surface is the line road surface, is favorable to the magnetic core to put into the inner chamber point and glues fixedly more firm.

Meanwhile, the plastic shell 2 is formed with a front corner and a back corner, which play a role in positioning in the subsequent process.

The utility model discloses network filter shell, structural design is reasonable, not only does benefit to follow-up wire winding and goes on smoothly fast, promotes work efficiency; moreover, when the solder paste is welded on a PCB (printed circuit board) in the follow-up process, the solder paste can smoothly climb the solder coating welding end, so that the welding firmness is improved, the rosin joint is prevented from being generated, the good conductivity is ensured, and the safety performance of the product is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that other structures obtained by adopting the same or similar technical features as the above embodiments of the present invention are all within the protection scope of the present invention.

Claims

1. A network filter shell is characterized by comprising a plastic shell and two groups of terminal pin groups arranged on two opposite sides of the plastic shell, wherein the terminal pin groups are formed by arranging a plurality of terminal pins in parallel, each terminal pin is mainly formed by integrally connecting an outer terminal pin and an inner terminal pin, a first bent part embedded into the plastic shell is formed between the outer terminal pin and the inner terminal pin, and a second bent part and a third bent part are formed on the outer terminal pin and positioned outside the plastic shell; a staggered pin is formed on the first bending part.

2. The network filter housing of claim 1, wherein a wire hanging groove is formed on each of two opposite sides of the inner terminal pin.

3. The network filter housing as recited in claim 1, wherein a solder terminal is formed on the outer terminal pin end, and a solder ramp is formed on the solder terminal.

4. The network filter housing of claim 1, wherein a cut groove is formed on the lower end surface of the plastic housing corresponding to the two terminal pin sets, and the cut groove is located between the outer terminal pin and the inner terminal pin.

5. The network filter housing of claim 1, wherein a wire management groove is formed on the inner side surface of the plastic housing at a position corresponding to the inner terminal pin.

6. The housing of claim 1, wherein a retaining wall is formed at each end of the plastic housing.