JPH0132304Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a three-pole plug-two-pole jack plug connector formed by connecting a chip terminal and a sleeve terminal of a three-pole plug within a cap.

Prior Art A conventional plug connector formed to be inserted into a three-pole jack and to take a one-pole connection terminal from a chip terminal and a sleeve terminal was developed in 1987-
There is one as disclosed in No. 33089.
These are designed so that the tip terminal of the plug connector is long, taking into account the installation positions of the tip terminal and sleeve terminal on the axis in the jack, and the tip terminal contacts the tip terminal and the sleeve terminal in the jack. It is something.

Problems to be Solved by the Invention As described above, in the conventional example, the connection plug itself is formed for conversion without using an independent plug contact for three-pole to two-pole conversion. Therefore, there is a problem that the contact between the chip terminal and the sleeve terminal and the chip terminal of the contact plug tends to be unstable, and a good connection effect cannot be obtained.

Means to Solve the Problem This invention is a new independent three-pole plug-two-pole jack in which the chip terminal and sleeve terminal of a three-pole plug are connected by pressure and are formed so that they will not easily separate. The purpose is to provide a plug connector.

Embodiments This invention will be described in detail based on embodiments of the drawings.

FIG. 1 is an explanatory diagram showing a section of a plug connector for two-pole conversion provided with a three-pole plug and two-pole jack according to the present invention.

In the figure, 1 is a single head, 2 is an insulating collar, 3 is a sleeve, 4 is an insulating tube, 5 is a stepped main body, 6 is a contact spring, 7 is a short plate, 8 is an insulating bush, 9
is a cap. The single head 1 has a mandrel 11 extending concentrically on the side opposite to the head end 10 that contacts the chip terminal of the equipment side jack.
A circular flange-shaped base metal part 12 is provided on the end edge of 1. The sleeve 3 is formed into a stepped cylindrical body, the outer diameter of the large diameter cylindrical body 31 is formed to a nominal size, and the small diameter cylindrical body 32 is concentrically connected to the large diameter cylindrical body 31 and extends long. The outer diameter is made slightly smaller at the open end of the small diameter cylindrical body part 32, and an adhesive part 33 formed thinner than the small diameter cylindrical body part 32 is provided with a slight length. Further, the inner diameter of the small diameter cylindrical body portion 32 is the same as that of the single head 1
The core metal part 11 is formed to have a diameter into which it fits loosely. The insulating collar 2 is made of ebonite material into a cylindrical body with a flange.
The outer diameter of the single head 1 is formed to be slightly smaller than the outer diameter of the large diameter cylindrical body part 31 of the sleeve 3, and the flange part 21 is sandwiched so that the single head 1 and the open end of the large diameter cylindrical body part 31 face each other,
The outer circumferential surface of the cylindrical body part 22 is brought into tight contact with the inner circumferential surface of the large-diameter cylindrical body part 31, and at the same time, the outer circumferential surface of the core metal part 11 provided on the single head 1 is fitted onto the inner circumferential surface in a sliding manner. Formed to fit into the In this state, the base metal part 12 formed on the edge of the core metal part 11 is formed so as to protrude from the adhesive part 33 formed on the small diameter cylindrical part 32 of the sleeve 3. The insulating tube is formed of a synthetic resin material, and is formed so as to cover the core metal part 11 and insulate the surface of the core metal part 11 from the inner circumferential surface of the small diameter cylindrical body part 32. The stepped body portion 5 includes a cylindrical portion 51 formed to have the same diameter as the outer diameter of the large diameter cylindrical portion 31 of the sleeve 3, and a diameter extending outward formed at one opening edge of the cylindrical portion 51. It is formed by providing a cap receiver 52 having a large circular flange shape and a main body portion 53 formed to project concentrically with the cap receiver 52.
The main body part 53 has an outer circumferential diameter that is dimensioned to be fixed to the inner circumferential surface of the cap 9 with a tightening margin, and an inner part formed by connecting a circular hole whose diameter gradually decreases from the open end side. A stepped circular hole 54 is provided, and a tapered surface is further provided so that the stepped circular hole 54 and the inner peripheral surface of the cylindrical body portion 51 are connected. The stepped main body portion 5
is a state in which the open end of the cylindrical body part 51 is concentrically opposed to the stepped surface of the large diameter cylindrical body part 31 formed in the sleeve 2 with a spaced interval, and the spaced apart space and the inner circumferential surface of the sleeve 2 A composition that forms a spacing between the outer circumferential surface of the small diameter cylindrical body part 32 and a flange-like part 55 that protrudes from the inner side and the opening end of the stepped circular hole 54 and has the same diameter as the outer diameter of the main body part 53. Resin insulation material 5
6 is provided and formed. In this case, the adhesive portion 33 of the sleeve 2 and the base metal portion 12 of the single head 1 are formed on the upper end surface of the brim portion 55 so as to slightly protrude.
The contact spring 6 is formed by bending a ring-shaped seat plate 61 and a width plate 62 from the edge of the seat plate 61 at a substantially right angle along an arcuate edge. In order to strengthen the rigidity and increase the elastic force at the edge, a connecting piece 63 in the shape of a missing circle with an arcuate peripheral edge is formed, and the edge of the connecting piece is formed in a cylindrical shape, and a part of the peripheral wall is formed. A clip portion 64 is formed parallel to the longitudinal axis. The clip portion 64 is formed to have a diameter that allows the mating core wire terminal to be tightly inserted thereinto. The contact spring 6 has a seat plate portion 61 in contact with an end surface of a flange-like portion 55 formed on the insulating material 56 of the stepped main body portion 5, and a sleeve 2 on the inner peripheral edge.
The outer circumferential surface of the small-diameter cylindrical body part 32 is smoothly fitted, and the opening end face of the adhesive part 33 formed on the edge of the small-diameter cylindrical body part 32 and the base formed on the mandrel part 11 of the single head 1. A ring-shaped short plate 7 is formed to be sandwiched between the metal part 12, and in this state, a pressing force is applied in the axial direction to push the adhesive part 33 of the sleeve 2 outward, and the base is Metal part 12, adhesive part 33 and seat plate part 6
1 is clamped onto the short plate 7 to form a pressure bond, the two poles formed by the single head 1 and the sleeve 3 are connected, and the clip portion 64 of the contact spring 6 forms a single pole. The insulating bush 8 is made of ebonite material into a cylinder with a bottom, and its outer circumferential surface is formed in a size that allows it to be pressed into and fixed to the inner circumferential surface of the cap 9. Form the dimensions so that it fits slightly loosely. Further, a circular hole 81 is provided in the insertion jack that penetrates through the center of the bottom surface. The jack 9 has a bottomed cylindrical opening edge in tight contact with the main body part 53 of the stepped main body part 5, an opening end face in contact with the cap receiver 52 and fixed, and a bottom part of the insulating bushing 8 on the bottom surface. The cap 9 is formed by bringing the outer circumferential surface into tight contact with the inner circumferential surface of the cap 9 and fixing it. Furthermore, a circular through hole 91 is provided in the center of the bottom surface, which is concentric with the circular hole 81 of the insulating bushing 8 and has a large diameter.

Effects This invention is constructed as claimed in the utility model registration based on the above-mentioned embodiment, so that the core part forming the single head terminal and the adhesive part forming the sleeve terminal are completely connected. , there is no risk of poor contact. Furthermore, there is no risk of poor contact with the integrally connected contact springs.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram with a part of the plug connector according to this invention in cross section, Fig. 2 is a sectional view of the insulating collar, Fig. 3 is an explanatory diagram with a part of the sleeve in cross section, and Fig. 4 is an explanatory diagram with a part of the sleeve in cross section. FIG. 5 is a front view of the contact spring, FIG. 5 is a side view thereof, and FIG. 6 is an explanatory view of the seat plate portion. 1...Single head, 3...Sleeve, 5...Stepped main body, 6...Contact spring, 7...Short plate, 8...
... Insulating bushing, 9 ... Cap, 11 ... Core metal part, 12 ... Base metal part, 32 ... Small diameter cylindrical body part, 33
... Adhesive part, 51 ... Cylinder part, 53 ... Main body part,
61... Seat plate portion, 62... Width plate, 63... Connecting piece, 64... Clip portion, 81... Circular hole, 91
...Circular through hole.

Claims (1)

[Scope of utility model registration request] A base metal part 12 formed in a circular flange shape is formed on the edge of a circular rod shape integrally formed with the single head 1 of a single head plug formed in a three-pole shape, and a core metal part 11 and a sleeve 3 are formed in a stepped shape. A small-diameter cylindrical body part 32 with a slightly thinner adhesive part 33 formed at the end thereof, a ring-shaped seat plate part 61, and a ring-shaped seat plate part 61 along an arcuate edge from the edge of the seat plate part 61. A width plate 62 is formed by bending it at an almost right angle, and connected to the width plate 62, a connecting piece 63 in the shape of a missing circle and a cylindrical wall thickness on the edge of the connecting piece 63 are formed parallel to the axis. A contact spring 6 is provided with a clip portion 64 that is cut out and tightly contacts the mating core wire terminal with elastic force, and the base metal portion 12 and the ring-shaped short plate 7 are sandwiched between the adhesive portion 33 and the contact spring 6. The single head 1 and the sleeve 3 are assembled by crimping the seat plate 61 of the
A bottomed cylindrical cap 9 is fixed to the outer peripheral edge of a main body part 53 formed with a large diameter and connected to a cylindrical part 51 concentrically facing the sleeve 3, and an insulating material is provided on the bottomed surface part. An insulating bushing 8 formed in the bottom cylindrical body and having a circular hole 81 for a jack in the bottom surface is fixed,
A three-pole-two-pole plug connector characterized in that a circular through hole 91 with a large diameter is provided concentrically with the circular hole 81 to form an insertion opening for a mating plug.