JPH04106858U - Electrical connector having flux shielding means and apparatus for providing the means on the connector - Google Patents

Abstract

(57) [Summary] (with modifications) [Purpose] When connecting the legs of each contact in a connector to a printed wiring board by soldering, each leg is treated with flux, and the flux rises up each contact. It adheres to those contact parts and prevents poor contact with the contact parts of each contact in the mating connector. [Configuration] Legs 7 of each contact 3 in connector 1
A flux shielding sheet 9 made of a material having insulating properties, heat resistance, and rubber elasticity is inserted into the base of the flux shielding sheet 9 without providing an insertion guide portion such as a cut or a hole.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention provides an electrical connector having a flux shielding means and its connector. The present invention relates to a device for providing means for.

0002

[Conventional technology]

In Japanese Patent Application Laid-Open No. 2-234369 regarding a connector mounting method, Connect the leg (mounting part) of each contact on the connector to the through hole on the printed wiring board. In order to prevent so-called flux build-up when inserting into the wire and soldering, A technology for inserting heat-resistant and insulating flux shielding sheets into the legs has been disclosed. It is.

0003

[Problem that the idea aims to solve]

In the above-mentioned known technology, a flux shielding sheet is attached to the leg of each contact. In order to do this, the shielding sheet is provided with notches in advance corresponding to the arrangement of each leg. Insert each leg through these notches. However, it requires a cutting process, and the legs and the cutting It is troublesome to have to perform precise relative positioning with the If the eyes are even slightly misaligned, there is a risk that part of the cut will remain around the leg. Ru. Therefore, flux enters the notch due to capillary action and reaches the mating connector. It rises and adheres to the contact parts of the contacts that are connected to the There is a risk of causing damage.

0004 Incidentally, in the above technology, a shielding sheet is tightly attached to the leg inserted into the notch. I am planning to wear it. However, the dimensions and shape of the notch relative to the thickness of the leg are These points are extremely important in ensuring a liquid-tight seal around the area. It's completely silent. In addition, the specific method of attaching the shielding sheet to the connector or the The location has not been disclosed either.

[0005] This idea seals the area around each contact liquid-tight to prevent so-called flux build-up. We propose electrical connectors with flux shielding means that can completely prevent The purpose of this invention is to provide a device for providing such means.

[0006]

[Means to solve the problem]

In the connector according to this invention, the legs of each contact, such as notches and holes, are Has rubber elasticity, heat resistance, and insulation properties, and does not have any guide parts for insertion. Using a flux shielding sheet, pierce each leg through this shielding sheet. Attach this shielding sheet to the connector. Therefore, this shielding sheet The penetrated portions are elastically and liquid-tightly pressed around each of the legs. become.

[0007] In the device according to this invention, the arrangement of the legs of each contact in the connector is is opened in the upper surface corresponding to the length of the leg, and extends to a depth approximately equal to the length of the leg, and the leg is A receiving member having a guide hole that is removably inserted, and a receiving member that is vertically slidably fitted thereto. It has a retaining member provided with a receiving slot. A flux shielding sheet is provided on the upper surface of the receiving member. A connector is received in the receiving slot on the shielding sheet, and the connector is placed in the receiving slot on the shielding sheet. By pressing the holding member together with the upper surface of the receiving member, the leg portion is Pierce this shielding sheet up to the base and attach it to the connector.

[0008]

[Effect]

In the connector according to this invention, the flux shielding sheet is attached to each contact. Because it is elastically and liquid-tightly pressed around the leg, the contact between the leg of each contact and the contact area is The space between them is completely shielded with a flux shielding sheet.

[0009] In the device according to this invention, the flux shielding sheet is supported on the upper surface of the receiving member. and the connector is accommodated in the receiving slot of the holding member that fits around the outer periphery of the receiving member. Therefore, these shielding sheets and connectors are positioned. Connector and holding member The leg of each contact penetrates the shielding sheet all the way to its base. A shielding sheet is attached to the connector.

0010

【Example】

The connector and device according to this invention are explained as follows with reference to the drawings. It is.

[0011] Figure 1 is a side view and diagram of a connector to which the flux shielding means of this invention is applied. 2 shows an enlarged sectional view of part II of FIG. 1, respectively.

0012 The connector 1 includes an insulating housing 2 and a required number of conductive contacts held therein. It consists of three parts. Housing 2 is made of insulating material such as plastic. When mounted on the surface of the printed wiring board 4, the printed wiring board 4 Clearance between the surface and the lower surface (mounting surface) 5 of the housing 2 facing this It has so-called standoff legs 6 on the lower edges of both sides. Each contact The connector 3 is made of conductive metal and is located inside the housing 2 to connect to the mating connector. A contact part (not shown) for making contact with the contact part of the contact in the the wiring pattern ( (not shown) for connection by soldering. Leg 7 is a pointed end It has a section 8.

[0013] A flux shielding sheet 9 is attached to the connector 1, and specifically, each contact A flux shielding sheet 9 is inserted into the leg portion 7 of 3. The shielding sheet 9 is an insulating At least the surface of the material is made of a material that has properties of heat resistance, heat resistance, and rubber elasticity, such as silicone rubber. The surface (inner surface) 11 is formed to be smooth. Shielding sheet for each leg 7 The method of attaching the legs will be described further later, but each leg 7 has a through hole such as a notch or hole. It pierces through the shielding sheet 9, which does not have a guide part, in its thickness direction. cutting-edge The portion 8 is suitable for easily penetrating the shielding sheet 9. In this penetration state, As shown in FIG. 2, the penetrated portions 10 of the shielding sheet 9 protrude downward, Its smooth surface 11 presses around each leg 7 in an elastic and fluid-tight manner. Therefore, Since the space between each leg 7 and the contact portion is completely shielded by the shielding sheet 9, each leg 7 When inserting the through hole in the printed wiring board 4 and soldering it, the flash This prevents dirt from rising up each contact 3 and attaching to these contact portions.

[0014] FIG. 3 is a schematic perspective view of a device for attaching the shielding sheet 9 to the connector 1. show.

[0015] The device 20 includes a base member 21, a receiving member 22, and a holding member 23. . The base member 21 includes a rectangular parallelepiped-shaped receiving member 22 in the direction of the center thereof, and a base member 2 Guide shafts 24 are integrally erected on the upper surface of both sides of the shaft 1 . Reception member 22 has almost the same planar shape and dimensions as the shielding sheet 9, and supports the shielding sheet 9. The surface 25 has openings corresponding to the arrangement of the legs 7 of the upper surface 25, and the length of each leg 7. It has a guide hole 26 which extends to approximately the same depth and into which each leg 7 is removably inserted. Ru. The holding member 23 fits the outer periphery of the connector 1 and the receiving member 22 so that they can be removed and removed. Each guide shaft 24 has a receiving slot 27 that can fit therein, and each guide shaft 24 has a top and a bottom on both sides of the holding member 23. The base member 21 and the holding member 23 in the vicinity of each guide shaft 24 are slidably penetrated. Each coil spring 28 is interposed between them and is always biased upward. Each proposal The upper end of the inner shaft 24 has a flange 29 for restricting the lifting of the holding member 23. are doing.

[0016] Note that there are spaces 30 on both sides of the receiving slot 27 in the length direction, and a space 30 is provided on both sides of the receiving slot 27 in the longitudinal direction. On the upper surface of the holding member 23, there are concave portions 32 having sloped portions 31 on both sides. It is formed. Although not shown in the drawings, each guide shaft 24 penetrates in the implementation. A through hole is formed on both sides of each guide shaft 24 of the holding member 23, and a through hole is formed in this. Each guide stripper bush is fitted, and each guide shaft 24 can slide up and down on these. inserted into.

[0017] When attaching the shielding sheet 9 to the connector 1, the shielding sheet 9 is attached to the receiving member. 22 is placed on the top surface 25, but this positioning is performed so that the outer periphery of the top surface Since it is surrounded by the peripheral wall of the receiving groove hole 27, this can be done easily and accurately. Next Then, insert the connector 1 into the receiving slot 27 with the leg 7 of each contact 3 facing downward. After setting, apply a load to connector 1 from the top downwards and push connector 1. At the same time, the holding member 23 is also moved against the action of each spring 28 to each guide shaft. 24. Then, the tip 8 of each leg 7 protrudes from the shielding sheet 9. Break it and insert it into each guide hole 26 of the receiving member 22 so that the lower surface of the connector 1 is covered with a shielding sheet. 9, and the shielding sheet 9 reaches the base of each leg 7. and then inserted.

[0018] In this way, the connector 1 with the shielding sheet 9 inserted into each leg 7 is assembled with the connector 1 and the The load on the holding member 23 is released and the holding member 23 is released by the action of each spring 28. After returning upward along each guide shaft 24, it is taken out upward. From then on, these operations By repeating this process, the shielding sheets 9 can be sequentially attached to the connectors 1.

[0019] In particular, when silicone rubber is used as the shielding sheet 9, silicone rubber can be used as a rubber bullet. It is a material with the smallest intermolecular force, that is, it has the lowest polarity among the materials that have properties. Therefore, even if the shielding sheet 9 is not provided with a penetration guide portion such as a cut or a hole in advance, the leg portions 7 The pointed end 8 can easily penetrate the shielding sheet 9.

[0020]

[Effect of the idea]

This invention having the above configuration and operation has the following effects.

[0021] According to the invention described in claim 1, the flux shielding sheet covers the leg portion of each contact. elastically and liquid-tightly press around the periphery of the contact, creating a flat surface between the leg of each contact and the contact area. The legs of each contact are completely shielded by a box shielding sheet, so the legs of each contact can be printed and routed. When inserting and soldering into the through-holes in the board, flux is applied to each contact. The material will not rise up the surface and adhere to these contact areas.

[0022] According to the invention described in claim 2, the above effect is further improved.

[0023] According to the invention described in claim 3, the shielding sheet is provided with an insertion guide portion such as a cut or a hole. Easy and accurate insertion of each contact leg into the shielding sheet without the need for can do.

[0024] According to the invention described in claim 4, the relative positioning of the connector and the shielding sheet is Secure and easy to attach the shielding sheet to the legs of each contact without fail. It can be inserted neatly, neatly and efficiently.

[Brief explanation of drawings]

FIG. 1 is a side view of a connector equipped with a flux shielding sheet according to the invention.

FIG. 2 is an enlarged sectional view of part II of FIG. 1;

FIG. 3 is a schematic perspective view of a device for attaching the shielding sheet to a connector according to the invention.

[Explanation of symbols]

1 connector 3 Contact 7 Legs 8 Point 9 Flux shielding sheet 10 Projection 11 Surface 21 Base members 22 Reception member 23 Holding member 25 Top surface 26 Guide hole 27 Reception slot

Claims (4)

[Scope of utility model registration request] 1. A mating connector has a contact portion that comes into contact with and separates from a contact portion of a contact, and a leg portion that connects to a printed wiring board, and these leg portions protrude from an insulator surface facing the printed wiring board. In the electrical connector, a plurality of contacts are arranged and held on the insulator, and a heat-resistant and insulating flux shielding sheet is attached by passing through each of the legs, and each of the legs is made of rubber. A flux shielding sheet having elasticity is penetrated from the front surface to the back surface thereof, and the penetrated portions of the shielding sheet are elastically and liquid-tightly pressed around each of the legs. An electrical connector having a flux shielding means. 2. A portion of the shielding sheet penetrated by each leg protrudes toward a distal end of each leg, and the smooth surface of the shielding sheet is elastically and liquid-tightly pressed against the periphery of each leg. 2. The electrical connector according to claim 1, wherein: 3. The electrical connector according to claim 1, wherein the leg has a pointed end, and the shielding sheet is made of silicone rubber. 4. A base member, an upper surface that stands up on the base member and supports a flux shielding sheet to be inserted into the legs of each contact in the connector, and the upper surface corresponds to the arrangement of the legs of the contacts. a receiving member having a guide hole that is open, extends to a depth approximately equal to the length of the leg, and into which the leg is removably inserted; movably fitted, and supported by the base member so as to be movable up and down and biased upward by a spring;
an apparatus for providing flux shielding means in an electrical connector, comprising a retaining member having a receiving slot adapted to and removably fitted around the outer periphery of the connector.