JPH09320704A - Electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connector capable of easily obtaining position precision of a tail part of a contact, capable of being easily mounted on a substrate without deforming the tail of the contact when the connector is mounted on the substrate, and capable of being automatically mounted without connection failures or the like and not reading to cost increase. SOLUTION: A connector 10 is provided with a position mechanism with a substrate on both ends in a widthwise direction of a locator 16, and the positioning mechanism is provided with a positioning pin 18 integrated with the locator 16. And, when the electric connector 10 is connected to the substrate, a tip end of the positioning pin 18 provided at the locator 18 is inserted into a substrate pore farther than a tip end of a tail part 24 of a contact 14 protruding from the locator 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector used in an electronic device such as a personal computer.
In particular, it relates to the structure of a locator for positioning the contact tail portion of the electrical connector.

[0002]

2. Description of the Related Art FIG. 2A is a perspective view of a general electric connector used in a conventional electronic device such as a personal computer, and FIG. 2B shows the electric connector shown in FIG. It is a sectional view of the contact tail side. This type of electrical connector 1
0 is composed of a block 12, a contact 14, and a locator 16. The block 12 is an electrically insulating plastic and is manufactured by a known injection molding method or the like. The material of this block 12 is PBT.
PET, 46PA, PPS, LCP, etc. are used. A positioning pin 18 for positioning is provided on the bottom surface of the block 12 on the side where the tail portion 24 of the contact 14 projects so that the tail portion 24 of the contact 14 and the hole into which the contact 14 of the substrate is inserted are aligned. Are provided on both ends.

The contact 14 is made of metal and is manufactured by a known press work or the like. This contact 1
As the material of No. 4, good conductive brass, phosphor bronze, and beryllium copper are used. Due to its function, the contact 14 is mainly composed of a contact portion, a fixed portion, and a tail portion 24. The contact portion is a portion for contacting a contact of a mating connector, and this contact portion includes:
Springiness is required to obtain the contact force with the contact of the mating connector. The fixing portion is a portion for holding and fixing the contact 14 on the block 12. The tail portion 24 is a portion that is inserted into the board and soldered to the board.

Like the block 12, the locator 16 is made of electrically insulating plastic and is manufactured by a known injection molding method or the like. As the material of this locator 16,
PBT, PET, 46PA, PPS, LCP, etc. are used. On both sides of the locator 16 in the width direction, the protrusions 2
8 are provided. Flange portion 2 of the block 12
A concave portion 30 with which the convex portion 28 of the locator 16 is engaged is provided on the inner side of 2. The locator 16 is fixed to the block 12 by the protrusion 28 of the locator 16 engaging with the recess 30 of the block 12. Generally, the locator 16 positions the tail 24 of the contact 14,
The purpose is to allow the tail portion 24 of the contact 14 to be smoothly inserted into the hole into which the contact 14 of the board is inserted when the connector 10 is set on the board.

[0005]

As described above, the tail portion 24 of the contact 14 is positioned by the locator 16, and the tail portion 24 thus positioned is positioned.
The positioning between the substrate and the substrate is performed by the positioning pin 18. The tail portion 24 of the contact 14 is the tail portion 2
4 and there is a clearance between the insertion hole 20 of the locator 16 and there is a possibility of misalignment, and the locator 16
If there is a clearance between the convex portion 28 and the concave portion 30 of the block 12, there is a possibility that there is a similar amount of misalignment. That is, the positional relationship of the tail portion 24 of the contact 14 is affected by the above-mentioned two clearances. Therefore, there is a problem to be solved in that the tail portion 24 of the contact 14 is not inserted into the hole of the substrate during mounting and is deformed, and automatic mounting cannot be performed. Moreover, there is a problem that the cost cannot be increased because the automatic mounting cannot be performed. Further, if the tail portion 24 of the contact 14 is mounted on the substrate while being deformed, problems such as poor connection may occur, and the substrate itself or the connector 10 itself may need to be replaced, leading to cost increase. appear.

The present invention is directed to the tail portion 24 of the contact 14.
Is easy to obtain, and when the connector 10 is mounted on the board, the tail portion 24 of the contact 14 is not deformed, so that the connector 10 can be easily mounted on the board, and
It is an object of the present invention to provide an electrical connector which can be automatically mounted, has no connection failure, etc. and does not increase the cost.

[0007]

This object can be achieved by providing the positioning mechanism with the board not at the flange portion of the block of the connector but at both widthwise end sides of the locator.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A positioning pin 18 integral with a locator 16 is provided as the positioning mechanism. By integrating the positioning pin 18 with the locator 16, the factors that affect the positional accuracy of the tail portion 24 of the contact 14 can be reduced. When the electrical connector 10 is attached to the board, the tip of the positioning pin 18 provided on the locator 16 is inserted into the hole of the board before the tip of the tail portion 24 of the contact 14 protruding from the locator 16. Since the positioning pin 18 is inserted into the board before the tail portion 24 of the contact 14, the tail portion 24 is less likely to be deformed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. 1A is a perspective view of the electric connector 10 of the present invention, and FIG. 1B is a cross-sectional view of the electric connector 10 of the present invention at the contact tail side when the locator 16 is fixed to the block 12. Electrical connector 10 of the present invention
Mainly includes blocks 12, contacts 14, and locators 16
It is composed of In this embodiment, the electrical connector 10 has a length of about 60 mm, a width of about 26 mm, and a thickness of about 11 mm. The length direction changes depending on the number of cores and the contact pitch. In this embodiment, the number of cores is 80 and the contact pitch is 1 mm.

First, the contact 14 of the connector 10 according to the present invention will be described. The contact 14 is made of metal as in the conventional case, and is manufactured by known press working or the like. The contact 14 has a male shape and a female shape, and is a male shape in this embodiment. The size of the contact 14 is about 0.4 mm × 0.4 mm in this embodiment. The contact 14 is held and fixed to the block 12 by press fitting or the like. The contact 14 may be made of any metal having good conductivity, and generally brass, phosphor bronze, beryllium copper or the like can be used. Considering the price and workability, brass is preferred. This contact 14
As a method of connecting the board to the board, a dip type or a surface mount type can be considered. In this embodiment, it is an L-shaped dip type. The contact 14 is roughly divided into three parts, a contact part, a fixed part, and a tail part 24, as in the conventional case, and the function thereof is also the same as the conventional case. The type of the contact 14 may be a female contact or a male contact.

Next, the block 12 which is one of the points of the present invention will be described. The block 12 is an electrically insulating plastic and is manufactured by a known technique such as injection molding. The material of this block 12 is PBT.
And PET, 46PA (nylon), PPS, LCP and the like. Considering price and workability, PBT is preferable. A plurality of contacts 14 are held and fixed to this block 12. A fitting port 26 for fitting with a mating connector (not shown) is provided on the opposite side (fitting side) of the tail portion 24 of the contact 14.

A flange portion 20 is provided on the contact tail side of the block 12. An engaging portion 23 is provided on the bottom surface side of the flange portion 20. The engagement portion 23 is a relief portion of the locator 16 when the locator 16 is fixed to the block 12. The size of the engagement portion 23 may be any size as long as the locator 16 can be fixed to the block 12, but in consideration of the positional accuracy of the tail portion 24 of the contact 14, it is smaller than that of the locator 16.
It is better to be about 02-0.05 mm larger.

Next, the locator 16 which is another point of the present invention will be described. This locator 16
Is an electrically insulating plastic like the block 12, and is manufactured by a known technique such as injection molding. Examples of the material of the locator 16 include PBT, PET, 46PA (nylon), PPS, LCP and the like. Considering price and workability, PBT is preferable. As the size of the locator 16, the engaging portion 23 of the flange portion 22 of the block 12
Any size may be used as long as it can be engaged with. In this example, the length is 60 mm and the width is 11 mm.
Then, the height was set to about 4 mm.

The role of the locator 16 is to correct the pitch shift of the tail portion 24 of the contact 14. Therefore, the contact 1 is attached to the locator 16.
An insertion hole 20 into which the tail portion 24 of No. 4 is inserted is provided. The size of the insertion hole 20 is appropriately designed so that the pitch of the tail portion 32 of the contact 14 and the hole of the substrate 38 are not displaced when the electric connector 10 is set on the substrate. In this embodiment, the size of the contact 14 is made larger by about 0.01 to 0.03 mm.

The locator 16 serves as a guide when the tail portion 24 of the contact 14 is inserted into the hole of the board.
Positioning pins 18 are provided on both sides in the longitudinal direction of the.
The positioning pin 18 may be a separate component that is press-fitted and fixed to the block 12, or may be integrally machined with the block 12. If it is a separate part, the block 12 can be made of metal.
It may be made of resin such as. The positioning pin 18 is preferably integrated with the locator 16 in consideration of the positional accuracy of the tail portion 24 of the contact 14 when the connector 10 is mounted on the board. The size of the positioning pin 18 may be any size as long as the above-described role is satisfied, and the locator 16 of the insertion hole of the board and the tail portion 24 of the contact 14 can be used.
Design appropriately considering the amount of protrusion from In this embodiment,
The positioning pin 34 is integrally machined with the block 12, and has a diameter of 2.8 mm and a height of 3.5.
It was made into a cylindrical shape of mm. The height of this positioning pin 34 is
When the locator 16 is fixed to the block 12, the locator 16 is appropriately designed so that it can be inserted into the substrate faster than the tail portion 24 of the contact 14.

Finally, a method of fixing the locator 16 to the block 12 will be described. The locator 16 is shown in FIG.
It is fixed to the block 12 as in (B). A method of fixing the locator 16 to the block 12 may be press fitting, hooking, bonding, or the like, but press fitting is preferable in consideration of position accuracy and assembly.

[0017]

The present invention has the following remarkable effects by taking the means described in detail above. Since the positioning pin 18 is provided integrally with the locator 16, the positional accuracy of the tail portion 24 of the contact 14 can be easily obtained. Since the positioning pin 18 is provided integrally with the locator 16, the positional deviation between the tail portion 24 of the contact 14 and the hole of the board is reduced. Since the positioning pin 18 is provided integrally with the locator 16, the positional deviation of the tail portion 24 of the contact 14 with respect to the hole of the board is small, so that the connector 10 can be mounted on the board very easily. Automatic mounting can also be facilitated. Since the positioning pin 18 is provided integrally with the locator 16, the positional deviation of the tail portion 24 of the contact 14 with respect to the hole of the board is small.
The tail portion 24 of No. 4 does not deform. Since the positioning pin 18 is provided integrally with the locator 16, the positional deviation of the tail portion 24 of the contact 14 with respect to the hole of the board is small, and the connector 10 can be mounted on the board very easily. Since the tail portion 24 of the is not deformed, poor connection is unlikely to occur.・ Since connection failure is less likely to occur, the board itself and connector 1
There is no need to replace 0 itself, which does not increase the cost.

[Brief description of drawings]

FIG. 1A is a perspective view of an electric connector of the present invention. (B) b on the contact tail side of the electrical connector of the present invention
It is a -b 'sectional view.

FIG. 2A is a perspective view of a conventional electric connector. (B) It is a bb 'sectional view on the contact tail side of the conventional electric connector.

[Explanation of symbols]

 10 Connector 12 Block 14 Contact 16 Locator 18 Positioning Pin 20 Insertion Hole 22 Flange Part 23 Engagement Part 24 Tail Part 26 Fitting Port 28 Convex Part 30 Recessed Part

Claims (3)

[Claims] 1. An electric connector comprising a required number of contacts, a block for holding / fixing the contacts, and a locator for positioning the tail portion of the contact, wherein a positioning mechanism for a board is provided at both ends in the width direction of the locator. An electrical connector characterized by being provided on the side. 2. The electrical connector according to claim 1, wherein the positioning mechanism is provided with a positioning pin integrated with a locator. 3. When connecting the electrical connector to the board, the tip of the positioning pin provided on the locator is inserted into the hole of the board before the tip of the tail portion of the contact protruding from the locator. The electrical connector according to item 1.