JP2016018673A - Shield member, electric connector, and method of manufacturing shield member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shield member, an electric connector, and a method of manufacturing the shield member, capable of obtaining a high shield performance without increasing a size by shielding a terminal part connected with a substrate, of a contact of an electric connector, with a plurality of plate-like leg parts.SOLUTION: A shield member 30 comprises: a cylindrical main body part 31 that comprises therein a hollow hole whose front side is opened outward; a cylindrical skirt part 32 that is provided at a rear side of the main body part 31, that comprises therein a hollow hole whose rear side communicated with the hollow hole is opened outward, that has a diameter larger than that of the main body part 31, and that is coaxial with the main body part 31; and a plurality of leg parts 33 that is in a plate shape using a circumferential direction of the skirt part 32 as a plate width direction, and that is extended outward from the rear end of the skirt part 32.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a shield member that shields a contact connected to a conductive portion of a substrate, an electrical connector, and a method for manufacturing the shield member.

  In recent years, demand for high shielding performance for contacts has been increasing in electrical connectors, and a shield member is provided to shield noise from the contacts. Such a shield member is connected to the ground of the substrate, and is formed by die casting using zinc or aluminum for reasons such as excellent conductivity (for example, Patent Document 1).

  A conventional electrical connector and a shield member attached to the electrical connector will be specifically described with reference to FIGS. 12 is a perspective view of the conventional electrical connector 100 as viewed from the diagonally rear side, FIG. 13 is a perspective view of the conventional shield member 200 as viewed from the diagonally forward side, and FIG. 4 is a bottom view of a shield member 130. FIG.

  Since the shield member 130 to be attached to the conventional electrical connector 100 is formed by die casting, the shape of the leg 131 which is a soldering portion to a substrate (not shown) is made into a round boss shape in consideration of strength and formability. ing. The conventional electrical connector 100 has a configuration in which the periphery of the terminal portion 121 of the contact 120 protruding from the rear end surface of the housing 110 is surrounded by a round boss-shaped leg portion 131 of the shield member 130. In such a conventional electrical connector 100, unnecessary radiation from the terminal portion 121 of the contact 120 is shielded by the round boss-shaped leg portion 131 by surrounding the terminal portion 121 of the contact 120 with the leg portion 131.

  In recent years, there has been an increasing demand for miniaturization of electronic devices equipped with electrical connectors, and there has been an increasing demand for miniaturization of electrical connectors mounted on electronic devices. In addition, such an electrical connector is disposed in close proximity to other electronic components as the electronic equipment is downsized, and in order to minimize the influence on the electrical characteristics of other electronic components, Good shielding performance is also required.

Japanese Patent Laid-Open No. 9-27365

  However, in the shield member used in the conventional electrical connector, the shape of the leg portion connected to the ground of the substrate is a round boss shape, so that the periphery of the terminal portion connected to the substrate of the contact can be sufficiently covered. However, there is a problem that there is a limit in improving the shielding performance. Moreover, in the conventional shield member, since the intensity | strength of the material used for die-casting is low, a leg part cannot be made thin. Therefore, in the conventional shield member, if it is intended to sufficiently cover the terminal portion of the contact, it is necessary to increase the diameter of the leg portion of the round boss shape, which leads to an increase in the size of the shield member and the entire electrical connector. Has a problem.

An object of the present invention is to shield a terminal portion connected to a substrate of a contact of an electrical connector with a plurality of plate-like leg portions of the shield member, so that a shield member capable of obtaining high shielding performance without increasing its size It is providing the manufacturing method of an electrical connector and a shield member.

  A shield member according to the present invention is a shield member that shields contacts of an electrical connector, and is provided at a rear side of a cylindrical main body portion including a first hollow hole that is open to the outside at the front. And a second hollow hole that is open to the outside and communicates with the first hollow hole, and has a cylindrical shape that is larger than the diameter of the main body and coaxial with the main body. And a connecting portion that connects the main body portion and the skirt, and a plate shape in which the circumferential direction of the skirt is a plate width direction, and a plurality of portions extending rearward from the rear end of the skirt And a leg portion.

  The terminal portion of the contact is shielded by surrounding the periphery of the terminal portion connected to the substrate of the contact of the electrical connector with a plurality of plate-like legs having the circumferential direction of the skirt portion as the plate width direction.

  An electrical connector according to the present invention includes an insulating housing having an insertion hole that opens forward to allow insertion of a mating connector, a connecting portion that is disposed in the insertion hole, and protrudes outward from the housing. A plurality of conductive contacts fixed to the housing, and a shield member fixed to the housing and shielding the contacts, the shield member having a front portion externally A cylindrical main body having a first hollow hole in which the connection portion is disposed, and a rear portion provided to the rear of the main body and communicating with the first hollow hole. A cylindrical skirt having a diameter larger than the diameter of the main body and coaxial with the main body, and a connecting portion for connecting the main body and the skirt. And the hem The circumferential direction is a plate-like shape that extends in the rear direction from the rear end of the skirt, protrudes to the outside rear of the housing, and is disposed on the outer periphery of the terminal portion of the plurality of contacts. A plurality of legs.

  The terminal portion of the contact is shielded by surrounding the periphery of the terminal portion connected to the substrate of the contact with a plurality of plate-like legs having the circumferential direction of the skirt portion as the plate width direction.

  A method for manufacturing a shield member according to the present invention is a method for manufacturing a shield member for shielding a contact of an electrical connector, and by punching out a part of a metal plate, a circular portion and an outer edge portion of the circular portion are provided. A step of forming a radial piece extending radially and having an end in the extending direction connected to the plate member; and drawing the center of the circular portion by punching along the die hole with a punch Forming a cylindrical main body at the center of the main body and forming a flange around the main body, and removing the top surface of the main body in the drawing direction to draw the inside of the main body into the drawing direction. Opening the outer peripheral side portion of the radial piece, bending the outer peripheral side portion of the flange portion in a direction opposite to the drawing direction, and cutting the end portion of the radial piece from the plate. Coaxial with the part A cylindrical skirt having a diameter larger than that of the main body, and an inner peripheral side portion inside the outer peripheral side portion of the flange portion as a connecting portion that connects the main body portion and the hem portion, And extending the radial piece from the skirt in the opposite direction to form a plate-like leg with the circumferential direction of the skirt as the plate width direction.

  A metal plate material is drawn and cut, and further bent to form a shield member, and the leg portion is formed into a plate shape with the circumferential direction of the skirt portion as the plate width direction, and is connected to the contact board of the electrical connector. The terminal portion of the contact is shielded by surrounding it with legs.

According to the present invention, since the terminal portion connected to the contact substrate of the electrical connector is shielded by the plurality of plate-like leg portions of the shield member, high shielding performance can be obtained without increasing the size.

It is a disassembled perspective view of the electrical connector which concerns on embodiment of this invention. It is the perspective view seen from the diagonal front above the electrical connector which concerns on embodiment of this invention. It is the perspective view seen from the slanting back above the electrical connector which concerns on embodiment of this invention. It is a front view of the electrical connector which concerns on embodiment of this invention. It is a rear view of the electrical connector which concerns on embodiment of this invention. It is AA sectional drawing of FIG. It is the perspective view seen from the diagonal front above the shield member concerning the embodiment of the present invention. It is the perspective view seen from the slanting back above the shield member concerning the embodiment of the present invention. It is a side view of the shield member concerning the embodiment of the present invention. It is a bottom view of the shield member concerning the embodiment of the present invention. It is an enlarged view of the engaging part of the shield member and housing which concern on embodiment of this invention. It is process drawing which shows the manufacturing method of the electrical connector which concerns on embodiment of this invention. It is the perspective view seen from the slanting back above the conventional electrical connector. It is the perspective view seen from the diagonally forward lower part of the conventional shield member. It is a rear view of the conventional shield member.

  Hereinafter, electrical connectors according to embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In the figure, the x-axis, y-axis, and z-axis form a three-axis orthogonal coordinate system. The positive direction of the y-axis is the forward direction, the negative direction of the y-axis is the backward direction, the x-axis direction is the left-right direction, and the z-axis is A description will be given assuming that the positive direction is upward and the negative direction of the z-axis is downward.

<Configuration of electrical connector>
The configuration of the electrical connector 1 according to the embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 10.

  The electrical connector 1 includes a housing 10, a contact 20, and a shield member 30.

  The housing 10 is made of an insulating material. The housing 10 includes a fitting portion 16 and a pedestal portion 17.

  The fitting portion 16 includes an insertion hole 11 that opens forward. The insertion hole 11 allows a mating connector (not shown) to be inserted. Above the fitting portion 16, it extends from the front end to the rear end of the fitting portion 16 to open the front and rear to the outside, and the lower portion communicates with the insertion hole 11, so that the engagement portion of the mating connector is moved back and forth. An engaging recess 9 is formed to be slidable in the direction. The engagement recess 9 penetrates in the thickness direction of the housing 10 to communicate the engagement recess 9 with the outside, and has a rectangular engagement hole 6 as viewed from above that engages with the engagement protrusion of the mating connector. doing. The fitting part 16 is locked by engaging the engaging hole 6 and the engaging protrusion of the mating connector, and prevents the mating connector from being pulled forward.

The pedestal portion 17 is provided integrally with the fitting portion 16 at the rear of the fitting portion 16 and has a square shape when viewed from the rear. The pedestal portion 17 has a base portion 5 protruding forward from the front end, a plurality of portions extending forward from the front end of the base portion 5 and protruding into the insertion hole 11, and a plurality of pedestal portions 17 disposed apart from the upper, lower, left and right inner walls of the insertion hole 11. The holding | maintenance part 7 is provided. The pedestal portion 17 is formed with a plurality of through holes 13 penetrating in the front-rear direction on the same circumference of a circle centered on the axis P1.
A plurality of through-holes 12 penetrating in the front-rear direction are formed on the same circumference of a circle centered on the axis P1. Protrusions 14 projecting rearward are provided at the four corners of the pedestal 17. One of the projecting portions 14 is provided with a boss 15 projecting rearward. When the electrical connector 1 is mounted on the substrate, the protruding portion 14 contacts the mounting surface of the substrate, and the boss 15 engages with the positioning hole of the substrate. The pedestal 17 has a bottom surface 8 that faces the mounting surface of the board when the electrical connector 1 is mounted on the board. The bottom surface 8 faces the mounting surface in a state of being separated from the mounting surface of the substrate by a protruding distance of the protruding portion 14 protruding rearward from the bottom surface 8. Around the base 5 at the front end of the pedestal 17, an annular recess 19 is formed in an annular shape when viewed from the front. A groove 18 is formed in the annular recess 19 along the outer periphery of the annular recess 19. In the groove portion 18, recessed portions 181 recessed backward are formed along the outer periphery of the annular recessed portion 19 at a predetermined interval. The recess 181 is formed so as to be engageable with the protrusion 321 of the skirt 32 of the shield member 30 (see FIG. 11).

  The contacts 20 are conductive, have a pin shape, are provided in a plurality, and are fixed to the housing 10. The contact 20 includes a connection part 21, a terminal part 22, and a fixing part 23. The connecting portion 21 is disposed so as to be exposed in the insertion hole 11 along the extending direction of the holding portion 7 and protrudes forward in the insertion hole 11. The connecting portion 21 is connected to a contact of a mating connector (not shown). The terminal portion 22 penetrates the through hole 13 of the base portion 17 of the housing 10 and protrudes rearwardly, and is soldered to a conductive portion of a substrate (not shown). The fixing part 23 has a larger diameter than the connection part 21 and the terminal part 22, and is press-fitted into the base part 17 and fixed together with the vicinity of the connection part of the connection part 21 with the fixing part 23.

  The shield member 30 is formed by pressing a metal plate including drawing. The shield member 30 is made of a material having a spring property, and is typically made of stainless steel. The shield member 30 includes a main body portion 31, a skirt portion 32, a leg portion 33, and a connecting portion 34.

  The main body 31 is plate-shaped and has a hollow hole 35 that is open frontward to the outside, and has a cylindrical shape that is continuously formed over the entire circumference in the circumferential direction. The main body 31 has a circular shape centered on the axis P1 when viewed from the front. The main body portion 31 abuts the inner wall of each of the plurality of holding portions 7 and covers the periphery of the connection portion 21 of the contact 20 in a state of being separated from the connection portion 21.

  The skirt portion 32 is plate-shaped, and has a hollow hole 36 that opens to the outside and communicates with the hollow hole 35. The skirt portion 32 has a diameter larger than that of the main body portion 31 and is coaxial with the main body portion 31. Shape. The skirt portion 32 is formed in a circular shape centered on the axis P1 when viewed from the rear. The skirt portion 32 is provided with a plate-like protruding portion 321 extending rearward from the rear end between the leg portions 33. The protruding portion 321 is provided so that the rear end thereof is aligned with the front end of the locking claw 331 of the leg portion 33 (see FIG. 9). The skirt portion 32 is engaged with the groove portion 18 of the base portion 17 of the housing 10. Here, the axis P <b> 1 is an axis of the body portion 31 and the skirt portion 32 that are coaxial.

  The leg portions 33 have a plate shape in which the circumferential direction of the cylindrical hem portion 32 is the plate width direction, are provided at predetermined intervals in the circumferential direction of the hem portion 32, and extend rearward from the hem portion 32. Through the through hole 12 of the pedestal 17 and protrudes rearward from the pedestal 17. The leg portion 33 has locking claws 331 on both the left and right sides. A plurality of leg portions 33 are provided, and are arranged at predetermined intervals on the same circumference of a circle centering on the axis P of the main body portion 31 and the bottom portion 32 on the outer periphery of the terminal portion 22.

  The connecting portion 34 has a plate shape and connects the main body portion 31 and the skirt portion 32 to form a step. The connecting portion 34 is disposed in the annular recess 19 of the pedestal portion 17 and covers the inner bottom surface of the annular recess 19.

  The radius r1 (see FIG. 10) from the axis P1 of the shield member 30 when the shield member 30 is viewed from the rear is from the axis P3 of the shield member 130 when the conventional shield member 130 is viewed from the rear. Is smaller than the maximum radius r2 (see FIG. 15) (r1 <r2). Therefore, the shield member 30 can be reduced in size compared to the conventional case, and the electrical connector 1 incorporating the shield member 30 can also be reduced in size compared to the conventional case.

  In addition, since the electrical connector 1 covers the terminal portion 22 of the contact 20 with the plate-like leg portion 33 in which the circumferential direction of the cylindrical skirt portion 32 is the plate width direction, the terminal portion 22 is sufficiently covered by the leg portion 33. The shielding performance against the contact 20 can be improved.

  Further, by providing a plurality of leg portions 33 with the circumferential direction of the skirt portion 32 in the plate width direction at a predetermined interval in the circumferential direction, a pattern drawn from the conductive portion of the substrate connected to the terminal portion 22 By wiring between the legs 33, the shield performance can be improved without affecting the routing of the pattern of the substrate. In particular, by making the distance D1 between the leg portions 33 coincide with the width of the pattern drawn from the conductive portion of the substrate, it is possible to achieve both high shielding performance and securing the degree of freedom in drawing the pattern of the substrate. be able to.

<Method for manufacturing shield member>
The manufacturing method of the shield member 30 according to the embodiment of the present invention will be described in detail below with reference to FIG.

  First, a part of the plate member 50 is punched out to form a plurality of arc-shaped holes 53 penetrating in an arc shape in the plate thickness direction of the plate member 50, thereby extending radially from the circular portion 51 and the outer edge portion of the circular portion 51. A plurality of radial pieces 52 which are provided and end portions 54 in the extending direction are connected to the plate member 50 are formed (FIG. 12A). The radial pieces 52 extend radially at equal angular intervals with respect to the center of the circular portion 51.

  Next, by drawing the center of the circular portion 51 along the inner wall 63 of the die hole with the punch 60 in a state where the outer portion of the circular portion 51 is sandwiched between the upper die 61 and the lower die 62, the main body portion 31 is formed, and a collar portion 55 is formed around the main body portion 31. At the same time, the radial piece 52 is punched out so as to be narrow. (FIG. 12B).

  Next, the top surface 56 at the tip of the main body portion 31 in the drawing direction (the direction from the front to the back of the paper surface in FIG. 12C) is removed to open the inside of the main body portion 31 in the drawing direction.

  Next, the edge part 54 of the radial piece 52 is cut | disconnected from the board | plate material 50 (it cut | disconnects by S1 of FIG.12 (b)) (FIG.12 (c)).

  Next, by bending the outer peripheral side portion 55a of the flange portion 55 (the portion outside S2 in FIG. 12C) in the direction opposite to the drawing direction, the outer peripheral side portion 55a is coaxial with the main body portion 31 and the main body. A cylindrical skirt 32 having a diameter larger than that of the portion 31 is used, and an inner peripheral side portion 55b (a portion on the inner side of S2 in FIG. 12C) on the inner side of the outer peripheral side portion 55a of the flange portion 55 is the main body portion 31. 12 and the skirt 32, and the radial piece 52 is a leg 33 extending from the skirt 32 in the direction opposite to the drawing direction (FIG. 12D).

  Thus, by forming the shield member 30 from a metal plate material, the main body 31, the skirt 32, and the leg 33 can be formed in a plate shape, and the shield member 30 and the entire electrical connector 1 can be made compact. And can be manufactured at a low cost.

  Further, since the bottom portion 32 of the shield member 30 is formed into a plate shape and is thinned, and the bottom portion 32 is held in the groove portion 18 of the pedestal portion 17, the housing 10 can be made small.

  Moreover, since the main body part 31 is formed into a cylindrical shape that is continuously formed over the entire circumference in the circumferential direction, the electric shielding performance is deteriorated by unnecessary radiation being emitted from the gap generated in the circumferential direction of the main body part 31. Can be prevented. The gap generated in the circumferential direction of the main body 31 is generated when the one end and the other end of the plate in the circumferential direction of the main body are joined when the main body is formed by bending the plate. . In the present embodiment, the gap can be eliminated by forming the main body 31 by drawing.

<Assembly method of electrical connector>
The method for assembling the electrical connector 1 according to the embodiment of the present invention will be described in detail below.

  First, the contact 20 is inserted into the through hole 13 of the housing 10 from the rear with the connecting portion 21 facing the through hole 13.

  Next, the vicinity of the connecting portion of the connecting portion 21 with the fixing portion 23 and the fixing portion 23 are press-fitted into a fixing portion (not shown) of the housing 10, and the contact 20 is fixed to the housing 10. In this state, the front end of the fixing portion 23 abuts against the press-fitted portion of the pedestal portion 17 and restricts the forward movement of the contact 20, whereby the connection portion 21 protrudes by a predetermined amount inside the insertion hole 11. 11, the terminal portion 22 protrudes rearward from the through hole 13 of the pedestal portion 17.

  Next, the shield member 30 manufactured by the above-described manufacturing method is inserted into the insertion hole 11 from the front with the leg portion 33 facing the insertion hole 11, and the leg portion 33 penetrates the through hole 12.

  Next, the rear end of the skirt portion 32 of the shield member 30 abuts on the groove portion 18, and the protruding portion 321 engages with the recess portion 181 formed in the groove portion 18, thereby restricting the rearward movement of the shield member 30. Then, the locking claw 331 is press-fitted into the inner wall of the through hole 12 and the shield member 30 is fixed to the housing 10. In this state, the body portion 31 covers the periphery of the connection portion 21, and the leg portion 33 covers the periphery of the terminal portion 22. Thereby, the electrical connector 1 is completed.

  As shown in FIG. 11, the hem 32 can be firmly engaged with the housing 10 by engaging the protrusion 321 with the recess 181 of the groove 18, so that the mating connector is connected to the electrical connector 1. Even when a large load is applied to the shield member 30 at the time, the plastic deformation of the leg portion 33 can be prevented. In particular, when a force in a direction (J direction in FIG. 11) that rotates about the axis P1 is applied to the shield member 30 from the outside, the left and right ends of the protruding portion 321 abut against the inner wall of the recess 181. Since the shield member 30 is prevented from moving in the J direction in contact, it is possible to prevent the leg portion 33 from being plastically deformed by applying a large load to the leg portion 33. Moreover, since the skirt part 32 of the shield member 30 is formed by bending after punching the plate member 50, the protruding part 321 can be easily formed.

Further, by forming the skirt 32 by bending the plate member 50, the shield member 30 can be formed by a single drawing process for forming the main body 31, so that the manufacturing process can be simplified. . Here, the bending of the plate member 50 means that the plate member 50 is not sandwiched between the upper die 61 and the lower die 62 as in the case of the drawing process performed to form the main body 31 described above. Refers to bending. In order to form the skirt 32 by folding the plate 50 without hindering the generation of wrinkles at the bent portion of the plate 50, the length from the front end to the rear end of the skirt 32 (the length of H in FIG. 9) is set. The thickness is preferably 1.5 mm or less.

  In the present invention, the type, arrangement, number, and the like of the members are not limited to the above-described embodiments, and the constituent elements thereof are appropriately replaced with those having the same effects and the like, without departing from the spirit of the invention. Of course, it can be changed appropriately.

  For example, in the above embodiment, the shield member is circular when viewed from the rear, but may be rectangular when viewed from the rear.

  Moreover, in the said embodiment, although the metal board | plate material was bent and the skirt part of the shield member was formed, you may form the skirt part of a shield member by drawing-processing a metal board | plate material.

  In the above embodiment, the main body portion of the shield member is formed by drawing. However, a part that has been partially drawn is rounded into a cylindrical shape, and so-called inlay caulking is performed by crimping one end and the other end that are rounded together. The body portion of the shield member may be formed by fastening.

  The shield member, the electrical connector, and the shield member manufacturing method according to the present invention are suitable for shielding a contact connected to a conductive portion of a substrate.

DESCRIPTION OF SYMBOLS 1 Electrical connector 5 Base part 6 Engagement hole 7 Holding part 8 Bottom face 9 Engagement recessed part 10 Housing 11 Insertion hole 12 Through hole 13 Through hole 14 Protrusion part 15 Boss 16 Connection part 17 Base part 18 Groove part 19 Ring-shaped recessed part 20 Contact 21 Connection part 22 Terminal portion 23 Terminal portion 30 Shield member 31 Main body portion 32 Bottom portion 33 Leg portion 34 Connecting portion 35 Hollow hole 36 Hollow hole 50 Plate material 51 Circular portion 52 Radial piece 53 Arc-shaped hole 54 End portion 55 Gutter portion 55a Outer portion 55b Inner side Part 56 Top surface 60 Punch 61 Upper die 62 Lower die 63 Inner wall 100 Electrical connector 110 Housing 120 Contact 121 Terminal part 130 Shield member 131 Leg part 321 Projection part 331 Locking claw

Claims (6)

A shield member for shielding the contact of the electrical connector,
A cylindrical main body provided internally with a first hollow hole whose front is open to the outside;
The main body is provided with a second hollow hole provided at the rear of the main body, the rear opening communicating with the first hollow hole being open to the outside, and having a diameter larger than the diameter of the main body. A cylindrical hem that is coaxial with the
A connecting portion connecting the main body portion and the skirt portion;
A plate-like shape in which the circumferential direction of the skirt is the plate width direction, and a plurality of legs extending rearward from the rear end of the skirt,
A shield member comprising: The plurality of legs are
Provided at predetermined intervals in the circumferential direction;
The shield member according to claim 1. The skirt is
It is a plate shape having the same plate thickness as the leg portion,
The shield member according to claim 1 or 2, wherein The main body is
It is a cylindrical shape that is continuously formed over the entire circumference in the circumferential direction.
The shield member according to any one of claims 1 to 3, wherein the shield member is provided. An insulative housing with an insertion hole that opens forward to allow insertion of the mating connector;
A plurality of contacts having electrical conductivity fixed to the housing, comprising: a connecting portion disposed in the insertion hole; and a terminal portion projecting to the outside rear of the housing;
A shield member fixed to the housing and shielding the contact;
Have
The shield member is
A cylindrical main body portion having a first hollow hole in which the front portion is opened to the outside and the connection portion is disposed;
The main body is provided with a second hollow hole provided at the rear of the main body, the rear opening communicating with the first hollow hole being open to the outside, and having a diameter larger than the diameter of the main body. A cylindrical hem that is coaxial with the
A connecting portion connecting the main body portion and the skirt portion;
The plate has a plate width direction in the circumferential direction of the skirt, extends rearward from the rear end of the skirt, protrudes to the outside rear of the housing, and has outer peripheries of the terminal portions of the plurality of contacts. A plurality of legs disposed on the
Having
An electrical connector characterized by that. A method of manufacturing a shield member for shielding a contact of an electrical connector,
A step of forming a circular portion and a radial piece extending radially from an outer edge portion of the circular portion and having an end in the extending direction connected to the plate material by punching a part of the metal plate material When,
Forming a cylindrical main body at the center of the circular part by drawing the center of the circular part along a die hole with a punch, and forming a flange around the main body part;
Removing the top surface of the distal end of the main body portion in the drawing direction and opening the inside of the main body portion in the drawing direction; and
Cutting the end of the radial piece from the plate;
By bending the outer peripheral side part of the flange part in the direction opposite to the drawing direction, the outer peripheral side part is coaxial with the main body part and has a cylindrical skirt having a larger diameter than the main body part, and the flange part The inner peripheral side portion inside the outer peripheral side portion is a connecting portion that connects the main body portion and the skirt portion, and the radial piece is extended from the hem portion in the opposite direction, A step of making the plate-like leg part the circumferential direction of the part the plate width direction;
The manufacturing method of the shielding member characterized by having.

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