JPH0244453Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a connector that is mounted on a board such as a printed wiring board to obtain electrical connection with the wiring of the board, particularly a connector called a press-fit connector.

[Conventional technology]

Recently, there is a type of connector called a press-fit connector that is mounted on the top surface of a board to obtain electrical connection with wiring on the board. Conventionally, such a connector 1 includes a plurality of contacts 3 held in a housing 2, as shown in FIG. Contact 3 is housing 2
extends downward from the bottom of the The contacts 3 are temporarily inserted into through holes (not shown) in the substrate 4, respectively. Thereafter, the contacts 3 are pressurized downward from the top surface of the connector 1, whereby the contacts 3 are press-fitted into the through holes of the substrate 4 and a connection is established.

[Problem that the invention attempts to solve]

However, in the connector 1 described above, the termination of the press-fit connection is not clear, and the contacts 3 may be over- or under-inserted. For example, if the contact 3 is driven in too much, the housing 2 or the substrate 4 may be destroyed, resulting in a fatal problem. Furthermore, if the contacts 3 are not implanted sufficiently, the housing 2 may rise from the substrate 4, resulting in an unstable condition.

Therefore, an object of the present invention is to provide a press-fit connector that prevents contacts from being over-stamped or under-stamped.

[Means and actions for solving problems]

According to the present invention, the present invention includes an insulating housing and a contact built into the housing, and the contact has a press fit portion that protrudes from the bottom surface of the housing and is press-fitted into a through hole of a mounting target board. In the press-fit connector, the bottom surface of the housing has a dowel that absorbs the pressing force against the mounting target board, and the dowel has a tapered tip that becomes thinner as it approaches the mounting target board from the bottom surface. A press-fit connector is obtained which is characterized by having a shape.

〔Example〕

FIG. 1 shows an embodiment of the press-fit connector of the present invention together with a board on which this connector is mounted. The illustrated connector 10 includes an insulative housing 11 and a plurality of contacts 12 held within the housing 11. The housing 11 has an outwardly extending flange 13 at the lower side wall thereof. A pressure absorbing protrusion or dowel 15 is formed on the bottom surface 14 of the housing 11. On the other hand, the contacts 12 extend vertically downward from the bottom surface 14 of the housing 11.
That is, the contact 12 is connected to the bottom surface 1 of the housing 11.
Press fit part 16 protruding downward from 4
and a distal end portion 17 extending further downward from the distal end of the press fit portion 16.

On the other hand, the substrate 20 has a plurality of through holes 21 for receiving the press fit portions 16 of the contacts 12. The through hole 21 has an inner diameter that allows the tip 17 of the contact 12 to be easily received. The outer diameter of the press fit portion 16 of the contact 12 is designed to be a diameter that is difficult to accommodate in the through hole 21, that is, it is designed to be slightly larger than the inner diameter of the through hole 21. Therefore, the substrate 2
In order to insert the press fit portion 16 of the contact 12 into the through hole 21 of the connector 1,
Pressure is applied from the top surface of the 0 to press fit. In addition,
The dowel 15 has a tapered shape in which the tip becomes thinner as it approaches the substrate 20 from the bottom surface 14 of the housing 11 . In other words, the tip of the dowel 15 has a shape that is easily deformed by pressure. Further, the dowel 15 connects the press fit portion 16 to the substrate 2.
When it is driven into the 0 through hole 21, it has an inverted trapezoidal cross section.

When mounting the connector 10 on the substrate 20, first, the tips 17 of the contacts 12 are inserted into the through holes 21 to temporarily fix the connectors 10 on the board 20. After that, as shown in FIG.
It is set on the cradle 32 of No. 1. Further, a push plate 33 is provided above the pedestal 32 of the press 31, that is, above where the connector 10 and the board 20 are placed, so as to be movable up and down. This push plate 33 presses the top surface of the connector 10. Then, the contacts 12 of the connector 10 are press-fitted into the through-holes 21 of the substrate 20 by press-fitting the press-fit portions 16 into the through-holes 21 . That is, when the upper surface of the connector 10 is pressurized by the press 31, the contacts 1 in the housing 11 are pressed.
Force is applied to the shoulder portion 22 of the press fit portion 16.
is transmitted as a force to be driven into the through hole 21 of the substrate 20. During press-fitting, the mounting height after driving is controlled by the dowels 15 formed on the bottom surface 14 of the housing 11. That is, the dowel 15 is
When press-fitting the press fit portion 16 into the through hole 21 of the substrate 20, the tip of the dowel 15 is pressed against the substrate 20. At this time, dowel 15
The tip is deformed so as to be crushed to absorb the pressing force against the substrate 20. As a result, destruction of the substrate 20, housing 12, etc. is prevented.

[Effect of idea]

As described above using the embodiments, it is possible to prevent the connector from being over-driven or insufficiently driven. Therefore, it is possible to prevent damage to the board, connector housing, etc.

In addition, a press-fit connection can be obtained without highly accurate control of the stroke of a press machine.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the press-fit connector of the present invention in a state where it is driven into a board;
The figure is a side view showing the operation of driving a press-fit connector and a board together using a press machine, and FIG. 3 is a side view showing a state in which a conventional press-fit connector is driven into a board. 1; connector, 2; housing, 3; contact, 4; board, 10; connector, 11: housing, 12; contact, 15; dowel, 16; press fit section, 20; board, 21; through hole, 31; press machine .

Claims (1)

[Scope of utility model registration request] A press-fit connector including an insulating housing and a contact built into the housing, the contact having a press-fit portion that protrudes from the bottom surface of the housing and is press-fitted into a through hole of a mounting target board, A dowel is provided on the bottom surface of the housing to absorb the pressing force against the mounting target board, and the tip of the dowel has a tapered shape that becomes thinner as it approaches the mounting target board from the bottom surface. A press fit connector characterized by: