JP2001307810A - Spring type connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To aim at a lower price. SOLUTION: This is composed of an insulation body 21 in which through holes 22 are arranged and formed and a flange part 23a abutted and stopped at a stage part 22c by a small diameter part 22a and a large diameter part 22b of the through hole 22, a contact pin 23 which is inserted in the through hole 22 and a top is pushed out of one face 21a of the insulation body 21, a conduction sleeve 24 in which one end side contact part is protruded from the other face 21b of the insulation body 21 through being pressed in the large diameter part 22b, and a coil spring 26 which is housed in the conduction sleeve 24 to push and press the contact pin 23. Different from a conventional structure which is built spring contacts in a insulation body after assembling them one by one, a man hour is greatly reduced because this is the structure in which parts constituting the spring contacts are directly assembled in the insulation body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring-type connector used for electrical connection between circuit boards or between a circuit board and a battery terminal in an electronic device such as a portable telephone, a remote controller, an AV device, and an OA device.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a conventional structure of a spring type connector of this kind. The spring-type connector shown in FIG. 5 is of a 4-pin type and has an insulating body 1 made of synthetic resin.
One is configured to hold four spring contacts 12. As shown in FIG. 5C, each spring contact 12 is constituted by a conductive sleeve 13 having one end closed, a contact pin 14 and a coil spring 15, and these are inserted with the coil spring 15 into the conductive sleeve 13. Further, the assembly is performed by inserting the contact pins 14 and caulking the open end portion of the conductive sleeve 13 inward as shown in the drawing.

The contact pin 14 has a flange 14
a is prevented by the caulked portion 13a of the conductive sleeve 13 so that the conductive sleeve 13 is slidably held in the conductive sleeve 13 in the axial direction, and the distal end portion 14b is projected outward from the caulked portion 13a. 1
5 is pressed in a direction protruding from the caulked portion 13a. The spring contacts 12 having the above-described structure are attached to the insulating body 11 by being press-fitted into through holes 16 formed in the insulating body 11, respectively. Further, the closed end side of the conductive sleeve 13 protrudes from the other surface of the insulating body 11 to form contact portions.

[0004]

As described above, the conventional spring-type connector is assembled by first assembling the spring contacts 12 one by one and then inserting them into the through holes 16 of the insulating body 11 one by one. It was press-fitted, and the assembly was troublesome and time-consuming, and the assembly cost increased accordingly. An object of the present invention is to provide a spring-type connector which can be easily assembled and reduced in man-hour in view of this problem, and can be configured at low cost.

[0005]

According to the first aspect of the present invention, there is provided an insulating body in which through-holes having a small opening on one surface side are formed and arranged, the small-diameter portion, and a large-diameter portion subsequent thereto. It has a flange part that comes in contact with the step part to be formed and is prevented from falling out,
A contact pin inserted into the through-hole and having a tip protruding from the one surface; a conductive sleeve press-fitted into the large-diameter portion and one end contact protruding from the other surface of the insulating body; It is comprised of a coil spring that is housed and presses the contact pin in a direction protruding from the one surface.

According to a second aspect of the present invention, in the first aspect of the present invention, a connecting projection is formed on one side surface of the insulating body, and the connecting recess formed to engage with the connecting projection is formed on the other side surface of the insulating body. Formed.

[0007]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an embodiment of the present invention, and FIG. 2 shows the embodiment in an exploded manner. In this example, the spring-type connector 20 is of a 4-pin type, but FIG. 2 shows a component constituting one pin and an insulating body, and illustration of overlapping pin components is omitted. I have.

First, the structure of each part will be described. The substantially rectangular parallelepiped insulating body 21 is made of, for example, a synthetic resin such as PPS resin, and has four through holes 22 arranged and formed as shown in FIG. As shown in FIG. 1, each of the through holes 22 has a small diameter at the opening on the one surface 21a side of the insulating body 21, and the small diameter portion 22a and the large diameter portion 2 subsequent thereto are formed.
2b. The diameter of the contact pin 23 is slightly smaller than the small-diameter portion 22a of the through hole 22, one end has a spherical shape, and the other end has a flange portion 23a. Contact pin 2
Numeral 3 is made of, for example, a brass material, and is gold-plated in order to obtain good conductive contact performance.

The conducting sleeve 24 has the shape of a cylindrical container with one end opened, and its open end is slightly enlarged by burrs 24a generated by drawing. The conduction sleeve 24 is also formed of, for example, a brass material and is subjected to gold plating. In addition, a hole 25 is provided in the bottom surface portion in order to prevent the liquid remaining during plating. The coil spring 26 is formed of, for example, a piano wire, and the coil spring 26 is also plated with gold.

Next, the assembly of these parts will be described step by step. (1) First, as shown in FIG.
Then, the contact pin 23 is inserted from the large-diameter portion 22b side. The contact pin 23 has a stepped portion 2 whose flange portion 23a is formed by the small diameter portion 22a and the large diameter portion 22b of the through hole 22.
The distal end portions having a spherical distal end protrude from one surface 21 a of the insulating body 21.

(2) Next, a coil spring 26 is inserted into each through hole 22. The inner end of the coil spring 26 contacts the flange 23a of the contact pin 23. (3) Finally, the conduction sleeve 24 is press-fitted into the large diameter portion 22b of each through hole 22. The conduction sleeve 24 is the burrs 2
4a, the spring connector 20 is completed by being fitted and fixed to the large-diameter portion 22b as shown in FIG. 1C.

The coil spring 26 is connected to the conductive sleeve 24.
The contact pin 23 is pressed by the coil spring 26 in a direction protruding from the one surface 21a. The conduction sleeve 24
Is protruded from the other surface 21b of the insulating body 21 to form a contact portion. As described above, according to this example, the components constituting the spring contact, that is, the contact pin 23, the coil spring 26, and the conduction sleeve 24 are directly incorporated into the insulating body 21, and at that point, one spring contact is previously provided. Compared to a conventional spring-type connector that has a structure in which they are assembled into an insulating body after they are assembled, assembly is simpler and the number of assembly steps can be greatly reduced.

FIG. 3 shows a state in which the above-described spring-type connector is used as a power supply connector of a portable telephone 31. In this example, the spring-type connector 32 is a two-pin type. The protruding contact portion of the conduction sleeve 24 (not shown) is soldered to the printed wiring board 33 and surface-mounted. In the figure, reference numeral 34 denotes a battery. FIGS. 1 and 2 show the spring-type connector 20 as a 4-pin structure, but the number of pins (the number of poles) is appropriately selected according to the application.

FIG. 4 shows an example in which a connecting mechanism is provided so that the number of pins can be easily increased. In this example, a connecting projection 41 is formed on one side surface of the insulating body 21. A coupling recess 42 is formed on the other side opposite to this. The connecting projections 41 and the connecting recesses 42 are shaped to engage with each other. The connecting projections 41 are fitted into the connecting recesses 42 and the spring-type connectors 20 are sequentially connected to each other so that the 8-pin connector is connected. , 12 pins, 16 pins,..., Etc.

[0015]

As described above, according to the present invention, a spring-type connector can be formed by sequentially incorporating a contact pin, a coil spring, and a conductive sleeve into an insulating body. Because the structure is built directly into the insulating body, after assembling the spring contacts one by one in advance, it is easier to assemble than the conventional spring type connector that built them into the insulating body, and the assembly man-hour is greatly reduced. Can be reduced. Therefore, the configuration can be made inexpensively.

The contact pins, the coil springs, and the conductive sleeves are incorporated by sequentially dropping the contact pins and the coil springs into the through holes of the insulating body.
Furthermore, since it can be performed by press-fitting the conductive sleeve from the same direction (above), the assembly can be automated and the cost can be further reduced.

[Brief description of the drawings]

FIG. 1A is a plan view showing an embodiment of the present invention, FIG. 1B is a front view thereof, and FIG.

FIG. 2 is an exploded perspective view of FIG. 1 with a part omitted.

FIG. 3 is a diagram showing an example of a use state of a spring connector.

FIG. 4A is a plan view showing one embodiment of the invention of claim 2;
B is a front view thereof.

5A is a plan view showing a conventional spring type connector, FIG. 5B is a partial sectional view thereof, and FIG. 5C is a sectional view of a spring contact thereof.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasushi Matsuoka 19 Shimoyamasano, Shimoyamasato, Iwadeyama-cho, Tadasu-gun, Miyagi Prefecture Inside Hosiden Tohoku Co., Ltd. Furuya Mold Co., Ltd.

Claims (2)

[Claims] 1. A flange portion, which is in contact with a step formed by a small diameter portion and a large diameter portion subsequent thereto, the insulating body having a through-hole having a small diameter in one surface side opening portion. A contact pin inserted into the through hole and having a tip protruding from the one surface; a conductive sleeve press-fitted into the large-diameter portion and having one end contact portion protruding from the other surface of the insulating body; A spring type connector comprising a coil spring housed in a conductive sleeve and pressing the contact pin in a direction protruding from the one surface. 2. The spring-type connector according to claim 1, wherein a connection protrusion is formed on one side surface of the insulating body, and a connection recess formed to engage with the connection protrusion is provided on the other side of the insulating body. A spring-type connector formed on a side surface.