JP3001445U - Coaxial cable connector - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a highly reliable connector for coaxial cable, which reliably suppresses transmission of vibration from the connected side and can be used for a long period of time. [Structure] A central terminal 4 connected to the central conductor 3 of the coaxial cable 2, an external terminal 6 connected to the external conductor 5 of the coaxial cable 2, and an external terminal 6 arranged on the outer peripheral side and tightening the external terminal 6 A groove 7a is formed on the inner surface of the sleeve 7 of the connector 1A having a sleeve 7 that is held on the mounted side by elastically biasing the external terminal 6 in the axial direction when mounted on the mounted side in the groove 7a. A possible elastic ring 12 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connector used for connecting a coaxial cable of, for example, an audio device, and more particularly, to a connector for a coaxial cable in which vibration resistance and holding property are taken into consideration.

[0002]

[Prior art]

 As shown in FIGS. 3 and 4, a coaxial cable connector 1 of this type includes a central terminal 4 connected to a central conductor 3 of a coaxial cable 2 and a cylindrical shape connected to an outer conductor 5 thereof. The external terminal 6 of FIG. A rubber-type rubber 8 is attached to the outer peripheral portion of the sleeve 7 in consideration of ease of handling during operation and prevention of squeal of the sleeve itself.

FIG. 5 exemplifies a state in which the connector 1 is connected to a mating pin jack 9. According to this, the central terminal 4 is inserted into the positive terminal 10 at the center of the pin jack 9, and the external terminal 6 is externally fitted to the negative terminal 11 on the outer periphery of the pin jack 9, thereby connecting the plus and the minus. Is taken.

In this case, generally, the outer terminal 6 is formed to have a diameter slightly smaller than the outer diameter of the negative terminal 11, and the outer terminal 6 is elastically expanded by enlarging the outer diameter of the negative terminal 11. Slotted to ensure a secure fit.

By the way, in the example of FIG. 3, the connector 1 is simply inserted into the pin jack 9 and the elastic force of the external terminal 6 or the deformed external terminal 6 is pressed by the sleeve 7. Therefore, as shown in FIG. 5, the external terminal 6 is provided with a bulging portion 6a at the end thereof, and the sleeve 7 is slid or rotated to move to the front end side. In some cases, the pin is pressed against the outer peripheral side of the minus terminal 11 of the pin jack 9 to obtain a holding force.

Further, as another example, when a spring-like ring is fitted around the outer terminal 6 and the pin plug 1 is inserted into the pin jack 9, the outer terminal 6 is tightened by the ring and holding force is retained. There are some that are designed to get.

[0007]

[Problems to be solved by the device]

 According to the above-mentioned conventional example, since the rubber 8 is attached to the sleeve 7, the vibration isolation of the sleeve 7 itself is possible. However, since no vibration damping material is interposed at all in the external terminal 6, it is not possible to suppress vibration from the pin jack 9 side such as an amplifier. Therefore, the vibration on the side of the pin jack 9 is transmitted to the coaxial cable 2, and as a result, the signal to be originally transmitted may be distorted.

Further, as shown in FIG. 5, if the external terminal 6 is mechanically tightened with a strong force to obtain a holding force, the pin jack 9 may be damaged, and repeated over a long period of time. I was worried about using it.

Furthermore, since the negative terminal 11 of the pin jack 9 and the external terminal 6 are in direct contact with each other, the vibration from the pin jack 9 side is transmitted without being attenuated, and as a result, the signal is distorted. It also becomes.

The present invention has been made in view of such a background, and an object thereof is to suppress the transmission of vibration from the pin jack side, to exert a reliable holding force, and to use it for a long period of time. It is to provide a highly reliable connector for coaxial cable.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is provided with a central terminal connected to a central conductor of a coaxial cable and an outer conductor of the coaxial cable, which is coaxially provided around the central conductor. A coaxial cable connector that has a cylindrical external terminal and a sleeve that is arranged on the outer peripheral side of the external terminal, and the diameter of the external terminal can be expanded by a slit formed along the axial direction of the external terminal. In the above, the inner surface of the sleeve is provided with an elastic body capable of elastically biasing the external terminal toward the center when the external terminal is expanded.

In this case, as the elastic body, an O-ring made of rubber or the like, that is, an O-shaped ring-shaped elastic member in a front view may be used. In addition, the elastic body may be provided on the tip side of the sleeve so that the external terminal can be suppressed on the free end side of the slot.

[0013]

[Action]

 In the above structure, when this connector is inserted into the member to be connected (pin jack), the center terminal is inserted into the plus terminal of the pin jack and the external terminal is fitted onto the minus terminal of the pin jack.

At this time, since the diameter of the external terminal is expanded by the minus terminal, the external terminal is elastically and firmly held between the sleeve and the sleeve by the elastic body. As a result, the vibration from the pin jack side to the connector side is damped by this elastic body.

Further, since the elastic body holds down the external terminal to the last, the elastic body is prevented from being elastically deformed to a greater extent when the pressing force becomes stronger, and the mechanical pressing force is prevented from becoming excessively large. It secures sex.

[0016]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In the following description, the same parts as those in the above-mentioned conventional example are designated by the same reference numerals, and the duplicated description will be omitted.

FIG. 1 is a cross-sectional view of a connector 1A according to this embodiment. In FIG. 1, a portion different from the conventional example of FIG. 3 is that the tip side of a sleeve 7 is thickened and a groove 7a is formed on the inner surface thereof. The elastic ring 12 made of rubber is fitted into the groove 7a as an elastic body. Other parts are configured in the same manner as in FIGS. 3 and 4 described above.

A so-called O-ring is used as the elastic ring 12, and the external terminal 6 that is radially outwardly expanded by the minus terminal 11 at the time of fitting is protruded from the inner surface of the sleeve 7 by a predetermined amount. It is set so that it can be securely pressed against the negative terminal 11.

When this connector 1A is attached to the pin jack 9, the central terminal 4 is inserted into the plus terminal 10 of the pin jack 9 and, at the same time, the external terminal 6 is externally fitted to the minus terminal 11. At this time, as described above, the external terminal 6 is formed to have a diameter slightly smaller than the outer diameter of the minus terminal 11, but since the external terminal 6 is provided with a slot, the connector 1A is inserted. As a result, the external terminal 6 is expanded in diameter by the minus terminal 11.

As a result, the elastic ring 12 arranged on the inner surface of the sleeve 7 is compressed, and an elastic force generated by the compression is generated between the sleeve 7 and the external terminal 6. That is, a holding force for the pin jack 9 of the connector 1A is generated, and with respect to vibration, the elastic ring 12 is interposed between the pin jack 9 and the connector 1A to function as a damper.

Therefore, according to this embodiment, by simply inserting the connector 1A into the pin jack 9, it is possible to reliably obtain the holding force at the time of mounting without accompanying the forward / backward movement of the sleeve 7, and at the same time, to vibrate. It becomes possible to perform dumping of.

Further, since the holding force for holding down the pin jack 9 is obtained by the elastic ring 12, it is not necessary to hold down by mechanically strong force, and it is possible to exert a predetermined performance over a long period of time, and it is possible to achieve a predetermined performance of this kind of equipment. It is possible to improve reliability.

Although the sleeve 7 is fixed in the above-described embodiment, the sleeve 7 is configured to be movable, and when the sleeve 7 is advanced as shown in FIG. Needless to say, it may be configured such that 6 is tightened.

[0024]

[Effect of device]

 As described above, according to the first aspect of the present invention, since the inner surface of the sleeve is provided with the elastic body capable of elastically biasing the external terminal toward the center thereof, the holding force can be ensured when the connector is connected. In addition, the elastic body can suppress the transmission of vibration from the pin jack side. In addition, since it can be held without requiring a large mechanical force, it is possible to provide a highly reliable coaxial cable connector that can be used for a long period of time.

On the other hand, as described in claim 2, by using the annular rubber as the elastic body, the elastic body can be constituted by a commonly used member. In addition to the effect, a coaxial cable connector can be provided at low cost.

Further, as described in claim 3, by providing the elastic body on the tip side of the sleeve, the elastic body acts on a portion where the elastic deformation amount of the external terminal is large. In addition to the effect of the device according to the first aspect, a larger holding force can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of a connector according to an embodiment of the present invention.

FIG. 2 is a front view of the connector according to the embodiment.

FIG. 3 is a cross-sectional view of a connector according to a conventional example.

4 is a front view of the connector shown in FIG.

FIG. 5 is a sectional view showing a state in which a connector according to another conventional example is attached to a pin jack.

[Explanation of symbols]

 1, 1A connector 2 coaxial cable 3 center conductor 4 center terminal 5 outer conductor 6 outer terminal 7 sleeve 7a groove 12 elastic ring

Claims (3)

[Scope of utility model registration request] 1. A central terminal connected to a central conductor of a coaxial cable, and a cylindrical external terminal connected to an outer conductor of the coaxial cable and provided coaxially around the central conductor. A coaxial cable connector having a sleeve arranged on the outer peripheral side of the external terminal, wherein the external terminal can be expanded in diameter by a slit formed along the axial direction of the external terminal. Is a connector for a coaxial cable, which is provided with an elastic body capable of elastically urging the external terminal toward its center when the diameter of the external terminal is expanded. 2. The coaxial cable connector according to claim 1, wherein the elastic body is made of a ring-shaped rubber. 3. The coaxial cable connector according to claim 1, wherein the elastic body is provided on a tip side of the sleeve.