KR101204273B1 - Pressure contact connector with pogo pin - Google Patents

Abstract

(assignment)
The present invention has been made for the purpose of providing a pogo pin-type press-fit connector which has a lower processing cost compared to the prior art, is easy to be reduced in size, and does not cause a problem for instant cutting.
(Solution)
The mold-shaped insulating housing is provided with a cylinder hole for mounting the pogo pin, and the pogo pin is pressed in the protruding direction by the coil spring housed in the cylinder hole, and the flange portion at the rear end thereof has the cylinder hole housing front side of the housing. Assembling in the cylinder hole in contact with the inside of the opening, and in contact with the contact spring piece and the substrate connecting terminal portion integrally protruding into the cylinder hole and always contacted with the pogo pin, fixed to the housing. Let's do it.

Description

Pogo pin-type press-fit connector {PRESSURE CONTACT CONNECTOR WITH POGO PIN}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pogo pin type connector that is mainly used as a battery connector in small electronic devices such as mobile phones.

BACKGROUND ART Conventionally, a pressure contact type connector using a pogo pin is used for a battery connector of a cellular phone.

The conventional pogo pins used for this kind of press-fit connector have a coil spring (coil spring) in a cylindrical cylinder (1) having a bottom surface as a metal as shown in FIG. (2) accommodates the pogo pin (3) pressurized in the extrusion direction in the extrusion direction, and the pressure contact pin portion (3) in the pogo pin (3). The tip of 3a) protrudes from the tip of the cylinder 1, and is pressed against the contact terminal of the battery by the pressing force in the protruding direction by the coil spring 2.

In this pogo pin 3, the cylinder inner end surface is provided with the bias cut surface 4 inclined in the axial direction, and pressurized by the coil spring 2 to press this surface. A component force in a direction orthogonal to the direction is generated, thereby causing the circumferential surface of the pogo pin 3 to always be press-contacted to the inner surface of the cylinder 1, and thus through the cylinder 1 from the pogo pin 3. It is comprised so that it may be energized.

The press-fit connector using this kind of pogo pin is expensive because the cylinder and the pogo pin are manufactured by machining a lathe, a price plate, and a press. There was a limit. In addition, since this is used by assembling it in a molded housing, there is a problem that the entire connector becomes bulky. Moreover, since the pogo pin 3 has the structure which can move radially in the cylinder 1, there existed a problem that the momentary disconnection by external shock is easy to occur.

As shown in Fig. 12, the pogo pin 3 and the cylinder 1 accommodating the same have been punched and bent in a metal sheet as an improvement in the above-described processing cost and cutting performance. The cylinders 1 and the pogo pins 3 are manufactured by pressing, and the elastic contact pieces 5 which protrude to the inner surface of the cylinder 1 are always pressed against the outer circumferential surface of the pogo pins 3. The thing which ensures the conduction of is developed (for example, patent document 1).

Published Japanese Publication No. 2005-112200

In forming the cylinder and the pogo pin by bending the sheet as shown in FIG. 12, the cutting cost and the break resistance against external shock are improved, but the cylinder and the pogo pin are cylinders. Since inner cylinders are manufactured together with a metal workpiece and assembled into a housing to be molded, a low configuration is required when mounting in parallel directions based on such a press-fit connector. There was a problem that could not respond sufficiently.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and aims to provide a pogo pin-type press-fit connector which has a lower processing cost than the conventional one, and is easy to reduce the size and does not cause the problem of instantaneous cutting. It is made by.

As described above, the feature of the pogo pin-type press-fit connector according to the invention described in claim 1, which solves the conventional problem and achieves the initial object, is a mold insulating insulating housing. A cylinder hole for mounting a pogo pin is provided, and the flange portion of the rear end of the housing is provided with the pogo pin pressed in the protruding direction by a coil spring accommodated in the cylinder hole. A contact spring piece which is assembled in the cylinder hole in such a state that it does not come into contact with the inside of the opening of the cylinder-housing housing front-side opening of the front surface, and that protrudes into the cylinder hole and is always pressed against the pogo pin. A contact having a spring piece and a board connection terminal integrally fixed to the housing; Will.

A feature of the invention of claim 2 is that, in addition to the configuration of claim 1, the pogo pin integrally protrudes a flange portion on the outer periphery of the rear end of the pogo pin body having a metallic rod shape. It is forming to.

The feature of the invention of claim 3 is that, in addition to the configuration of claim 1, the pogo pin is folded in a U-shape to form a pogo pin body portion by bending a strip-shaped metal sheet material to form a U-shape, and a parallel piece portion constituting the U-shape. The flange part is integrally provided in the shape which protruded the edge of each edge part of a piece.

The feature of the invention of claim 4 is, in addition to the configuration of claim 3, a spring that is bent toward the other parallel piece side from one end of both parallel piece portions forming the U-shape. A spring is provided, and the tip of the coil spring is brought into contact with the spring receiving part.

In the present invention, a mold-shaped insulating housing is provided with a cylinder hole for pogo pin mounting, and the pogo pin is pressed in the protruding direction by a coil spring housed in the cylinder hole, and the rear flange portion of the pogo pin is disposed on the front of the housing. The cylinder hole is assembled in the cylinder hole in such a state that it does not come out in contact with the inside of the opening on the front side of the housing, so that the housing has a cylinder function. Miniaturization becomes easy.

At the same time, the amount of metal material used is reduced, thereby reducing raw material costs. In addition, such a structure not only makes it easy to multipolarize, but also changes the shape of the housing, thereby making it possible to flexibly realize a press-fit connector of various shapes.

In addition, a stable state of conduction is always achieved by fixing the contact having a contact spring piece and a board connection terminal integrally protruding into the cylinder hole into the housing and being in constant contact with the pogo pin to conduct the pogo pin and the board connection terminal. Can be achieved with a structure.

In addition, the present invention is conventionally used because the pogo pin is integrally formed so as to protrude the flange portion on the outer periphery of the rear end of the metal rod-shaped pogo pin main body, so that the bias cut at the rear end of the pogo pin, which was previously required, is unnecessary. Pogo pins being mass-produced by the existing production equipment can be used, thus reducing facility investment.

In addition, the present invention, the belt-shaped metal sheet is folded in a U-shape to form a pogo pin main body portion, and the flange portion integrally provided in a shape in which the end edges of the parallel pieces constituting the U-shape protruded. By making it a structure, since the said pogo pin which uses a board | plate material can be manufactured by press working, manufacturing cost can be reduced.

Moreover, this invention is provided with the spring accommodating part bend | folded toward the other parallel one side part from one end part of both parallel piece parts which comprise the said U-shape, and it has the structure which contacted the front-end | tip of the said coil spring to the said spring accommodating part. By doing so, the length of the spring can be shortened.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front side perspective view showing the appearance of a first embodiment in a pogo pin type contact type connector according to the present invention.
Fig. 2 is a rear side perspective view of the first embodiment.
3 is a longitudinal sectional view of the first embodiment.
Fig. 4 is an exploded perspective view showing the pogo pins, coil springs, and contact portions of the first embodiment.
Fig. 5 shows the contacts used in the first embodiment, wherein (a) is a side view, (b) is a rear view, and (c) is a bottom view.
Fig. 6 is a front side perspective view showing the appearance of a second embodiment of a pogo pin type pressure weld type connector according to the present invention.
Fig. 7 is a rear side perspective view of the second embodiment.
8 is a longitudinal sectional view of the second embodiment.
Fig. 9 is an exploded perspective view showing a pogo pin, a coil spring, and a contact portion of the second embodiment.
Fig. 10 shows pogo pins used in the second embodiment, in which (a) is a side view, (b) is a rear view, and (c) is a bottom view.
Fig. 11 is a longitudinal sectional view showing an example of a conventional pogo pin.
12 is a longitudinal sectional view showing another example of a conventional pogo pin.

Next, an embodiment of the present invention will be described based on the embodiment shown in the drawings.

1 to 7 show an example of a pogo pin-type press-fit connector according to the present invention, which is used in a battery connector in which a plurality of pogo pins are elastically projected. This pogo pin type pressure type connector includes a housing 10, a pogo pin 11, a coil spring 12 and a contact ( 13). The housing 10 is assembled so that a pair of pogo pins 11 and 11 can go in and out.

The housing 10 is mold-molded by the insulating synthetic resin material, and the cylinder hole 20 opened through the front and back surface is formed. Although the cylinder hole 20 is circular in the cylinder hole housing front side opening part 20a of a housing front end surface, this cylinder hole 20 is a housing rear end surface side of the housing side of a contact side rather than the said cylinder hole housing front side opening part 20a. The cylinder hole main body part 20b of the () is formed in the shape of a shape in which the flange 1lb of the rear end of the pogo pin, which will be described later, is joined so as not to rotate.

As shown in Fig. 4, the pogo pin 11 is composed of a cylindrical pin main body portion 11a and a flange portion 1lb formed so as to protrude on the outer periphery of the rear end thereof. The tip of the portion 11a is a hemispherical pressure contact surface 11c. The flange portion 1lb protrudes only on both sides of the rear end portion of the pin body portion 11a, and its shape is cut into a horizontal plane whose upper and lower surfaces are flush with the outer circumferential surface of the pin body portion 11a. .

The pin body portion 11a is coupled to the cylinder hole housing front side opening 20a on the housing front side so as to slide in the axial direction in the cylinder hole 20, The flange portion 1lb is engaged in the cylinder hole body portion 20b so as to move in the axial direction, but not to rotate. And the flange part 1lb is assembled in the state which does not come out in contact with the inside of the cylinder-hole housing front side opening part of a housing.

The rear end of the pogo pin 11 is pressed in the direction in which the front end side is protruded by the coil spring 12 inserted into the cylinder hole 20. The coil spring 12 is prevented from coming off by the contact 13.

The contact 13 is fixed to the rear end surface of the housing 10. As shown in Fig. 5, the contact 13 has a board-shaped main body portion 13a having a cross shape, and the center portion of the main body portion 13a is a cylinder hole ( The coil spring 12 is prevented from coming into contact with the rear opening of the rear end 20.

Side press-fit pieces 13b and 13b which are formed by being bent to the front side of the housing on both side portions of the main body portion 13a are integrally provided. Moreover, the lower part is integrally provided with the board | substrate connection terminal 13c formed by bending to the front side along the outer side of the bottom face of the housing. Further, on the upper side of the main body 13a, an upper press piece 13d wider than each side press piece 13b is integrally formed toward the front side of the housing.

13 d of upper press pieces are integrally formed with the protrusion parts 21 and 21 for press fitting at both edges, and the contact spring piece 22 is attached to the front-end | tip of the said upper press piece 13d. It is integrally formed toward the extension direction. The tip side of the contact spring piece 22 is inclined toward the center side of the main body portion, that is, downward, and an arcuate contact portion 23 is formed on the lower surface of the tip portion.

As shown in Fig. 2, side press-fit pieces press-holes 24 and 24 are formed on the right and left sides of the cylinder-hole housing rear-side opening on the rear surface of the housing 10, and side press-fit pieces 13b and 13b on the left and right sides thereof. ) Is press-fitted. The upper press-fit piece press-hole 25 is formed in the upper part of the cylinder hole housing back side opening part, and each contact piece 13b, 13d is press-fitted into these press-holes 24 and 25, and the contact 13 is pressed into the housing | casing 10 It is fixed to).

In addition, a recessed groove 26 having a depth corresponding to the thickness of the substrate connecting terminal 13c is formed on the lower surface of the rear end side of the housing 10, and the housing is formed by inserting the substrate connecting terminal 13c into the recessed groove 26. It is mounted at the same height as the bottom of the.

The contact spring piece insertion hole 27 is formed in the upper press-fit piece press-in hole 25 toward the front side of a housing under the center part. The hole 27 is a contact spring piece 22 is inserted, there is formed a window hole 28 communicating with the cylinder hole 20, the rear side of the housing from the window hole 28 is a cylinder hole ( A separating wall 29 is formed to partition the hole 20 and the hole 27. This partition is not necessary here.

And the contact spring piece 22 protrudes into the cylinder hole 20 through the window hole 28, and the contact part 23 of the front end is always pressed against the upper surface of the pogo pin 11, When the pogo pin 11 is pressed in contact with a contact terminal such as a battery, the contact portion 23 at the tip of the contact spring piece 22 slides in a pressed state, whereby the contact state is always maintained by a constant spring pressure. Instantaneous cutting in case of increased shock is prevented.

In the first embodiment described above, the case where the pogo pin 11 is formed by lathe and milling cutter processing of a metal rod-shaped material is shown. In addition, the second embodiment shown in FIGS. As in the embodiment, the pogo pin may be formed by punching and bending a metal sheet. Here, the same parts as in the above embodiment are denoted by the same reference numerals, and description of the overlapping parts will be omitted.

As shown in FIG. 10, the pogo pin 31 in this embodiment curves a strip | belt-shaped board | substrate material to U shape, and the pogo pin main-body part 31a is formed, and this U shape The semicircular portion bent in shape is the pressure contact surface 31c. Further, in the U-shaped parallel piece portions 31e and 31f, parallel plate-like flanges 3lb and 3lb are formed on both edges of each end portion. Moreover, the spring accommodating part 31g which bend | folded at right angles toward the other parallel piece part 31f side is provided in the front-end | tip of one parallel piece part 31e.

On the other hand, the cylinder hole housing front side opening part 40a of the front end surface of the housing is formed in the cross-sectional shape of the size which the said U-shaped pogo pin main-body part 31a couple | bonds, and accordingly, the cylinder of the back side of the housing The hole main body portion 40b has a cross-sectional shape in which the parallel plate flange portions 3lb and 3lb can move in the axial direction by engaging with each other.

Since the contact is the same as in the above-described embodiment, description thereof will be omitted.

In the above embodiments, the contact spring pieces for contacting the pogo pins are integrally formed on the upper press pieces of the contacts, but may be formed integrally in the extending direction of the left and right side press pieces, and the contacts are independent of these. It may be formed integrally with the.

In addition, although the contact spring piece is in the shape of contacting the upper side of the housing, that is, the upper side of the pogo pin, the structure may be in contact with the side of the pogo pin in a direction rotated 90 degrees.

10: Housing
11: pogo pin
1lb: Flange
11a: pin body
11c: pressure contact surface
12: coil spring
13: contact
13a: main body
13b: Side press fitting
13c: Board connection terminal
13d: upper press-fitting piece
20: cylinder hole
20a: Cylinder hole housing front side opening
20b: cylinder hole body
21: protrusion
22: Contact spring piece
23 contact
24: side press-fit piece press-hole
25: Upper press-fit piece press-hole
26: concave groove
27: contact spring piece insertion hole
28: window hole
29: separation wall
a: Contact terminal
31: pogo pin
31a: Pogo pin body
3lb: Flange
31c: Pressurized contact surface
31e, 31f: U-shaped parallel piece
31g: spring receptacle
40: cylinder hole
40a: Cylinder hole housing front side opening part
40b: cylinder hole main body

Claims (4)

A cylinder hole for mounting pogo pins is provided in a mold-shaped insulating housing, and is pressed in the protruding direction by a coil spring accommodated in the cylinder hole. The pogo pin is assembled into the cylinder hole in such a state that the flange of the rear end thereof is in contact with the inside of the opening of the housing front side of the housing in front of the housing and does not fall out, and protrudes into the cylinder hole. The contact spring piece which is always in pressure contact with the pogo pin and the contact which is integrally provided with the board | substrate connection terminal are fixed to the said housing ,
The pogo pin is formed by bending a band-shaped metal sheet into a U-shape to form a pogo pin main body portion, and protruding the edges of the end portions of the parallel pieces forming the U-shape. The flange part integrally
Pogo pin-type connector.
delete delete The method of claim 1 ,
The spring accommodating part provided with the spring accommodating part bent toward the other parallel one side part from the one end part of both parallel piece parts which comprise the said U shape, The said spring accommodating part Pogo pin-type pressure contact type connector characterized in that the tip of the coil spring in contact with.

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