KR940003198Y1 - Contact for connector - Google Patents

Abstract

No content.

Description

Electrical connector

1A is a cross-sectional view of an electrical receptacle connector of the present invention on a printed circuit board.

FIG. 1B is a partial cross sectional view of the lower and upper access passages of the insulated housing.

FIG. 1C is a cross sectional view along line 1C-1C in FIG. 1A;

2A and 2B are plan and side views, respectively, of an electrical contact for insertion into the upper passage of the FIG. 1 connector.

3a and b are plan and side views, respectively, of the electrical contact for insertion into the lower passage of the first degree connector.

4a and b are front views of conventional blanks formed within the contacts of a, b and a, b, respectively.

5A is a perspective cross-sectional view of a conventional connector.

FIG. 5B is a perspective view of a conventional electrical contact in which the connector housing passage of FIG. 5A is secure.

5c is a plan view of the contact blank of FIGS. 5a and b.

* Explanation of symbols for main parts of the drawings

1: electrical connector 2: housing

3a, 3a ': base 3b, 3bb': contact

4, 4 ': Pin 5: Circuit board

The present invention relates to an electrical connector in which electrical and battery circuits are electrically connected to each other, and more particularly to an improvement in the electrical connection contained in a housing.

Electrical connectors are those that electrically connect and disconnect electrical and electronic circuits or devices.

One example of this type of connector is known from Japanese Patent Laid-Open No. 57-10555. The connector is used on a printed circuit board having end portions of electrical contacts that are soldered to the conductive path of the circuit board, and electrical pins connected to another circuit board can be inserted into the connection surface of the connector. Both circuits of the printed circuit board are electrically connected through the connection between the pins and the contacts.

5 shows an example of a conventional connector 11 and FIG. 5b shows a conventional electrical contact 13 in the housing 12 of FIG. 5a before the distal end 13b is bent. 5C shows a number of blanks of electrical contacts disposed prior to being formed side by side in the electrical contacts.

The electrical contacts 13 are systemically blanked and arranged horizontally in a strip of conductive metal to interconnect as shown in FIG. 5C. After the contacts have been stamped, the blank is formed in the form shown in FIG. 5b where the electrical contact 13 is received in the passageway of the abutment housing 12 and the distal end 13b is connected to the connector as shown in FIG. 5a. Bend at an appropriate angle to make (11).

The electrical contact 13 includes a contact 13a in electrical contact with an electrical pin 15 electrically connected to the circuit board 14 by a spring force and a distal end 13b formed from the housing 12. The distal end 13b is inserted into a hole in the printed circuit board (not shown) and soldered.

The electrical or electronic circuit of the printed circuit board to which the distal end 13b is soldered and the circuit of the printed circuit board are electrically connected by the electrical connection between the pin 15 and the contact 13.

When the upper edge of the spring contact 13c of the contact surface 13a of the electrical contact 13 connects the passage inner wall of the housing 2 in which the electrical contact is received, the spring force of the contact 13c on the pin 15 decreases. . Although only the end face 13d of the upper edge of the spring contacting portion 13c of the contact surface 13a connects the passage inner wall of the housing 12, there is a risk that the connection between the contact surface 13 and the pin 15 becomes poor.

By providing a space 16 between the joining blanks in which the contacts are formed in FIG. 5C, only the end face 13d connects the interior wall of the housing 12 passageway.

It is an object of the present invention to provide an electrical contact to a part of an electrical connector which obviates the above mentioned problems. The present invention has the following features. When an electrical contact is received in the housing passageway, only one portion of the upper edge of the contact surface always connects the interior wall of the passageway. The contact surface therefore comprises a spring force, which causes the spring contact to connect the electrical pin when inserted and a poor electrical contact does not occur between the pin and the contact surface. In addition, the present invention minimizes the consumption of metal by blanking the electrical contacts so that when the contacts are blanked outside the strip of metal and placed horizontally and joined together, all of the upper edge of the contact surface of the joining electrical contact is Connect.

The electrical contacts of the present invention are continuous of the base, with a pair of contacts extending up from the edge of the base and using spring force to electrically connect the base and the electrical pin inserted into the housing into the passage of the electrical housing. A distal end extending upward from the housing. The upper edge portion of the contact is corrugated. When the continuous electrical contacts are blanked from the metal strip, placed horizontally and interconnected, the waveforms complement each other along the joining edge to avoid waste. When the contacts are received into the housing, only the protrusions of the corrugated portion of the contact surface connect the inner wall of the passageway. The connection between the upper edge of the housing passageway and the inner wall is minimized, and the contact can electrically couple the pin through an optimal amount of spring force, thereby resulting in a poor contact between the contact and the pin. As a result, metal consumption is minimized at all of the contact upper edges of the contacts mutually engaged along the edges between the blanks.

Hereinafter, the present specification will be described in more detail with reference to the accompanying drawings.

The electrical connector 1 for electrical connection to the circuit board 5 comprises an insulating housing 2 and electrical contacts 3, 3 ′ which are joined at the top and bottom in passages arranged in the housing. The contacts 3, 3 ′ comprise a pair of contacts 3b, 3b ′ extending upwards from the sides of the bases 3a, 3a ′ and the contacts 4a, 4 ′ are provided with passages 2a, 2a. The electrical pins 4 and 4 are electrically coupled by spring force when inserted through the opening of ').

The wall portions 3c and 3c 'are spaced apart from the contact portions 3b and 3b', and the wall portions are bent inwards from the sides of the bases 3a and 3a 'and are mutually joined so that the pins 4 and 4' are connected to the contacts ( 3, 3 ') provides a stop that engages to limit the movement of the pins 4, 4'. Because of this, the pin 4 'cannot short the distal end 3d of the contact. The distal ends 3d, 3d 'are continuous of the bases 3a, 3a', and after the contacts 3, 3 'are joined in each passageway, the distal ends are bent at appropriate degrees along each side of the housing 2. End portions 3d and 3d 'are inserted into respective holes 5a and soldered to the printed circuit board 5.

2a and b show the contact 3 before being inserted into the upper passage 2a of the housing 2. 3a and b show the contact 3 'before being inserted into the lower passage 2a' of the housing 2.

Electrical contacts 3, 3 ′ are inserted into and coupled to the upper and lower passages of the housing 2, respectively, from the right side of FIG. 1. The distal ends 3d, 3d 'are then bent at an appropriate angle to extend along each side of the housing. The contacts 3, 3 ′ are inserted into the passages 2a, 2a ′ of the housing 2 by using an assembly mechanism (not shown) which is believed against the connection cross sections of the walls 3c, 3c ′ and the housing 2. It is used to receive the force of the assembly mechanism forcing the contacts 3, 3 'into the passage of the. The projections 3e and 3e 'collide at the wall portions 3c and 3c' and protrude outwardly from both sides of the bases 3a and 3a 'and the wall portions 3c and 3c'. The projections 3e and 3e 'break into the passage sidewalls of the housing 2 to engage the contacts 3 and 3'. As a result, when the pins 4, 4 ′ are electrically coupled to the contacts 3, 3 ′, the pins do not move in the engaged position even though the pins contact the contact surfaces of the walls 3c, 3c ′.

To join the contacts 3, 3 'in the housing passageway, the corrugated and upper edges 3f, 3f of the front surfaces 3g, 3g' of the upper edges 3f, 3f 'of the pair of contacts 3b, 3b'. Only the projections of the corrugated surfaces 3g, 3g 'extending') engage the upper walls 2b, 2b 'of the passages 2a, 2a' of the housing 2. Therefore, the upper edges 3f and 3f 'engage only the protrusions of the corrugated surfaces 3g and 3g' without engaging the upper walls 2b and 2b 'of the housing 3. Due to the fact that most of the upper edges 3f, 3f 'do not connect the upper walls 2b, 2b' of the housing passage, the spring force of the contacts 3b, 3b 'at the pins 4, 4' is reduced. It doesn't work. To join the contacts 3, 3b 'in the housing passageway, the corrugated surfaces 3h, 3h' are also located in the upper edge inner cross section of the walls 3c, 3c 'and the upper edges of the walls 3c, 3c'. The corrugated surface protrusions 3b and 3b 'extending to engage the upper walls 2b and 2b' of the passages 2a and 2a '. Therefore, all of the upper edges 3f and 3f 'of the contact portions 3b and 3b' and all of the upper edges of the wall portions 3c and 3c 'are the upper walls 2b, 2b ') does not bind.

4a and b show blanks of contacts 3, 3 ', which are blanked from metal strips with the electrical and spring characteristics required before the blanks are formed in the contacts 3, 3', respectively. The blanks forming the electrical contacts 3, 3 ′ are arranged horizontally and joined together.

Projections 3g, 3g of the upper portions 3f, 3f 'of the contacts 3b, 3b' when the blanks of the contacts 3, 3 'are blanked from the metal strip along the joining edges of the contacts 3, 3'. 'And the edge projections 3h and 3h' of the wall portions 3c and 3c 'are corrugated. As a result, the blanks mutually make up for the minimal waste of metal. Many of the same contacts can be blanked using approximately 45% in the metal strip area when using conventional blanking operations by using a form that enables the contacts to complement each other. The costs involved are also reduced. In addition, carrier strips 3i, 3i 'coupled to each control base 3a, 3a' are coupled to total contacts 3, 3 'during the blanking and forming operation, and many contacts 3, 3' are connected to each other. Can be transported without separation. The holes 3j, 3j 'located in the carrier strips 3i, 3i' are joined by a feeding machine providing a metal strip along the blanking and form die.

In order to guide and properly position the contacts 3, 3 'in each passage 2a, 2a' of the housing 2, the lower wall of the passage has grooves 2e, 2e 'and the contacts 3,3 It is coupled by protrusions 3k, 3k 'extending out from the bases 3a, 3a' of ').

As described above, in the present invention, the upper edge surface of the pair of contacts of the electrical contact is corrugated and only the protrusions of the corrugated surface join the walls of the housing passage when the contact is inserted into the housing passage. When the pin is inserted between the contacts, the spring force that electrically couples to the electrical pin is not lost and protrudes between the pin and the contact. The corrugated surfaces also complement each other along the edges that join the contact blanks when the corrugated surface is formed and the corrugated surface is blanked from the metal strip. The blanks are all joined along the outer edges of the contacts and walls, which are arranged horizontally to minimize the mating contacts of the metal.

Claims (5)

A contact portion for electrically coupling with the pin 4 and a distal portion 3d for electrically coupling with the conductive portion, the contact portion having a pair of spring contacts 3b extending upwardly from the side of the base 3a. In an electrical connector having a base 3a and joined in a passage of an insulated housing, the cross section of the upper edge 3f of the contact portion 3b while the remainder of the upper edge 3f is spaced from the wall 2b An electrical connector, characterized in that 3g) pushes over the upper edge (3f) to engage the wall (2b) with the passage (2a) of the housing (2) to which contacts are coupled in the passage. The wall part 3c according to claim 1, wherein the wall part 3c extends from the side of the base part 3a and has a cross section (on the upper edge of the wall part 3c that is pushed over the upper edge to engage the passage wall 2b that engages the contacts in the passageway) And 3h). 3. The electrical connector as claimed in claim 2, wherein the wall portion 3c has an outer surface extending across the base 3a which forms the stop and the pins 4 engage to limit the movement of the pins in the contact. 4. . 4. The grooves 2e according to claims 1, 2 and 3, wherein the walls of the passages 2a are formed along the projections 3k extending out from the base 2a when the contacts 3 are inserted in the passages to have guides and proper positions. Electrical connector comprising a. 2. Electrical connector according to claim 1, characterized in that the projection (3e) rolls opposite the wall of the passageway (2a) at the contact to engage the contact (3) in the passageway.