JPH04111174U - Coaxial connector with switch - Google Patents

Abstract

(57) [Summary] [Structure] This invention relates to a receptacle-type coaxial connector that produces a switch action when mated with a plug. The contact piece 2 in FIG. 1 is generally U-shaped and is made of a springy and highly conductive material. One leg 21 is a ground connection terminal, and the other leg 22 (free end) is the shoulder 3 of the L-shaped center contact 3.
1 to be elastically pressed. Further, an insulating tube 4 is slidably fitted around the contact portion 3a of the center contact 3. When fitted with a mating plug, the insulating tube 4 is pushed by the insulator of the plug and moves to the left in FIG. 1, pushing the leg 22 on the free end side of the contact piece 2. As a result, electrical contact between the center contact 3 and the contact piece 2 is opened. [Effect] Since the center contact 3 maintains a constant shape and is not deformed, it becomes easier to match the characteristic impedance required for a coaxial connector.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a receptacle-type coaxial connector that produces a switch action when mated with a plug. This is related to smartphones, especially smartphones used in small mobile communication devices such as car phones. This invention relates to a coaxial receptacle type connector with a switch.

0002

[Conventional technology]

Coaxial cables are usually used for mechanical connections of high-frequency circuits in electrical and electronic equipment and equipment. connector is used. In particular, electronic devices connected to coaxial interface cables that connect electronic devices. Coaxial connectors with switches are widely used for the connection terminals of high-frequency circuits on the side. . Various structures have been announced for coaxial connectors with switches, but the one shown in Figure 3 is This figure shows the principle of a switch mechanism of an example of the coaxial connector with a switch.

0003 In Fig. 3, 1 is a board made of insulating material of the receptacle side connector. . 2 is a U-shaped contact made of a conductive metal plate with spring properties. , one leg of the U-shape is attached to the substrate and the other leg is a free end. 13 is the center conductor of the mating plug side connector. 14 is a ground terminal attached to the board (1), and is connected to the plug connector. When they are not mated, they contact the free end of the U-shaped contact and generate electricity, as shown by the solid line. They are in the same emotional state.

0004 For coaxial connectors with the above basic structure, mating with the mating plug side connector Then, as shown by the chain line in Figure 3, the center conductor (3) of the plug side connector contacts the free end leg (22) of the U-shaped contact (2) of the receptacle side connector. By pressing further in this state, the contact part (23) at the tip of the leg (22) on the free end side It separates from the ground terminal 14 planted on the board (1), and the electrical connection is broken. It looks like this.

[0005]

[Problem that the idea aims to solve]

A structure that uses a U-shaped spring contact made of plate material as the (center) contact of the connector. This causes the contacts to deform. For this reason, when used in high frequency circuits, coaxial connectors There is an issue to be solved that is difficult to match the characteristic impedance required for It was.

[0006]

[Means to solve the problem]

The purpose of this invention is to solve the above problems, and its purpose is to provide the following means. This can be achieved by taking The insulating tube that surrounds the center contact of a receptacle-type connector is Allow it to slide back and forth along the contact area. A U-shaped contact piece is made from a springy and highly conductive material, and one U-shaped part is One leg is held and fixed to the base as a ground connection terminal, and the other leg (mating partner ) has a free end and is brought into contact with the shoulder of the center contact with spring pressure.

[0007]

[Effect]

When mated with the mating plug type connector, the center contact of the plug side connector However, before mating with the center contact (3) on the receptacle side, the insulator on the plug side Push the insulating cylinder (4) provided on the outside of the center contact (3). This push The insulating cylinder (4) on the receptacle side moves back along the center contact, and the contact piece automatically Push the leg on the far end side. When the free end leg is pushed, it separates from the shoulder of the center contact. The electrical connection between the center contact and the contact piece is then broken.

[0008]

【Example】

Based on the drawing below, an example of the coaxial receptacle type connector with switch of this invention is shown below. explain about. Figure 1 shows an example of the coaxial receptacle type connector with switch of the present invention. be. In FIG. 1, 1 is a circuit board. This circuit board (1) contains the code of the present invention. connector is attached. The connector of the present invention basically consists of an L-shaped center contact (3) and a circular overall contact. A cylindrical insulator (4), a U-shaped contact piece (2) made of springy metal, and the an outer conductor 5 arranged outside the movable insulator (4) and a central contact (3) and a base (6) that holds and fixes the contact piece (2).

[0009] The center contact (3) includes a contact part (3a), a fixed part (3b), and a terminal part (3c). It is bent at a right angle at the shoulder part (31), and has an L-shape, with one straight part. There is a contact part (3a) on one side, and a fixed part (3b) and a terminal part (3c) on the other straight part. There is. The center contact (3) is made of an insulating material, for example a plastic base ( 6) is held and fixed by the fixing part (3b). Also, the terminal of the center contact (3) The part (3c) is long enough to protrude from the base (6) and connect to the circuit terminal of the board (1). It has become.

0010 The U-shaped contact piece (2) has one U-shaped leg (21) planted in the base (6). Its tip protrudes from the base (6) and connects to the ground terminal of the board (1). It is now possible to continue. In addition, the other U-shaped leg (22) becomes a free end. and is in contact with the shoulder (31) of the center contact (3) under spring pressure. The contact piece (2) has a plate-like part that contacts the center contact (3) and the shoulder (31). It is preferable to have a plate-like shape, but it is not necessary to have a plate-like shape.

[0011] The cylindrical insulator (4) fits on the outside of the contact portion (3a) of the center contact (3). and is movable along the contact portion (3a). In addition, FIG. 2 shows an example of the cylindrical insulator (4), and 41 is the center contact. 42 is a hole through which the center contact (3) is inserted. This is a notch that allows it to pass through. In addition, in 43, the insulator (4) is the center contact point. The long length is provided as a means to prevent the connector from slipping out from the connector (3) in the direction of the mating partner. It's a groove. Measures to prevent the insulator (4) from coming off should be taken as long as they do not interfere with other functions and performance. It can be anything.

0012 In Fig. 1, the outer conductor (5) is provided with a slit (51) and is mated with a mating connector. The slit (51 ) without a cylindrical shape, the format depends on the relationship with the mating mating connector. be selected as appropriate.

[0013] In the connector of the present invention, when the mating plug type connector is mated, The insulator of the plug-type connector presses against the cylindrical insulator (4) of the connector of the invention. The pressed insulator (4) moves along the contact part (3a) of the center contact (3) The tip (44) pushes the free end leg (22) of the contact piece (2), so it is not pushed. The free end leg (22) is separated from the shoulder (31) of the center contact (3) and the contact piece (2) and the center contact (3) are disconnected electrically.

[0014] In addition, in Figure 1, 7 is a mold, 8 is a shield case, and this is an external conductor ( 5), the contact piece (2), or the ground circuit of the board (1).

[0015]

[Effect of the idea]

Since the present invention has the above configuration, the center contact maintains a constant shape. Since it does not deform, it has the characteristic impedance required for a coaxial connector. The remarkable effect unique to this invention is that it facilitates matching and improves transmission quality. play the fruit.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a coaxial receptacle-type connector with a switch according to the present invention.

FIG. 2 is an explanatory diagram of an insulator of the connector of the present invention.

FIG. 3 is an explanatory diagram showing the mechanism principle of a conventional coaxial receptacle type connector with a switch.

[Explanation of symbols]

1 board 2 Contact piece 3 Center contact 4 Insulator 5 Outer conductor 6 base

Claims (1)

[Scope of utility model registration request] 1. An L-shaped center contact is disposed on an insulating base and includes a terminal portion, a fixed portion, and a contact portion, and has a bent shoulder portion between the terminal portion, the fixed portion, and the contact portion; In a coaxial connector that is attached to an outer conductor that surrounds the contact, an insulating cylinder that slides back and forth along the contact part of the center contact is placed on the contact part side of the center contact. The contact base has a spring-like U-shape as a whole, one leg is held and fixed to the base as a ground terminal, the other leg is a free end, and the center contact is connected to the shoulder of the center contact. A coaxial connector with a switch that has contact pieces that are pressed into contact by a spring.