JPS5926538Y2 - Connection seat for coaxial cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector for a coaxial cable, and particularly to a connector for use in an antenna terminal plate of a television receiver, for example.

In a television receiver, an antenna terminal plate is used to feed power from the antenna to the receiver.

Then, as a line to connect this antenna to the antenna terminal board, use a 75Ω coaxial cable or a 300Ω coaxial cable.
Ω feeder wire is used.

Therefore, this invention is a coaxial cable connector that is especially effective when implemented on the antenna terminal board of a television receiver, and when the antenna wire is attached to the television receiver, the antenna wire is connected to a 75Ω coaxial cable. Even 3
Even if the wire is a 00Ω feeder wire, even if the operator is an amateur, it can be used in an antenna terminal board having a structure that does not cause any operational errors.

Therefore, the main purpose of this invention is to provide a socket for a coaxial cable with a novel structure that allows the connection of the coaxial cable with contacts from other external circuits.

In summary, this idea consists of a cylindrical shield case made of a metal material with openings at both ends, and an insulator that is housed inside the shield case and has holes at both ends that correspond to the openings of the shield case. an inner case made of material;
a protrusion formed protrudingly on the side surface of the inner case and having a groove for receiving an external contact that communicates with the inside of the inner case; and a protrusion provided in the inner case at a position opposite to one of the holes. a clip having a first connection part for receiving the center conductor of the coaxial cable and a second connection part formed perpendicularly to the longitudinal direction of the protrusion at a position opposite to the groove of the protrusion to receive the external contact; An external contact extends from the orthogonally sliding switch, the distal end of which is connected to the second connection in the first position of the switch, and disconnected from the second connection in the second position of the switch. This is a coaxial cable connector configured as follows.

The above objects and other objects and features of the present invention will become more apparent from the following detailed description with reference to the drawings.

In the following example, a coaxial cable connector used in the antenna terminal board of a television receiver will be explained, but this invention is not limited to such an antenna terminal board, but can also be used for coaxial cables and non-coaxial cables. It is entirely applicable where external contacts are required to be connected simultaneously or selectively.

FIG. 1 is a plan view of essential parts showing an antenna terminal plate as a preferred embodiment of this invention.

The antenna terminal plate is, for example, a terminal plate 1 made of synthetic resin.
, feeder terminals 2 , 2 attached to this terminal board 1 for connecting feeder wires to be described later, a connector seat 40 for connecting a coaxial cable, and a 300Ω feeder wire to this connector seat 40 . and a switch 10 for selectively connecting.

FIG. 2A shows a cross-sectional view taken along line IIA--IIA of FIG.

As can be seen from FIG. 2A, the switch 10 is connected to a substrate 70 located under the terminal plate 1 (not shown in FIG. 2A).
It is slidably attached to the

A hole 71 is provided in the substrate 70, and a shield case 41 forming the plug seat 40 is inserted therethrough.

This shield case 41 is made of a metal material, and has a thread 44 formed on its upper side surface, into which a coaxial cable plug (not shown) is screwed.

Openings 42 and 43 are provided at the upper and lower ends of this shield case 41.

Further, near the center of the shield case 41, a thick stopper 46 is formed that projects in the radial direction.

On the other hand, a protrusion 72 is formed on a part of the inner periphery of the hole 71 of the substrate 70, and projects from the inner periphery toward the inside of the hole 71.

The shield case 41 is inserted into the hole 71 of the substrate 70 from above and is locked by the stopper 46 .

Furthermore, a slit 45 extending from the opening 43 is formed in the lower part of the shield case 41.
5 fits into the projection 72 when the shield case 41 is inserted into the hole 71.

The slit 45 and the protrusion 72 work together to prevent the shield case 41 from rotating.

Note that the shield case 4 inserted into the hole 71 of the board 70
1 is fixed at its lower part with a nut (not shown) to prevent it from coming off.

Inside this shield case 41, an inner case 30 (indicated by a two-dot chain line in FIG. 3) made of an insulating material such as synthetic resin is housed.

This case 30 includes a lower case 31 and a lower case 3.
1, and an upper case 32 having a lower end opening that is fitted into the upper end opening of 1.

As can be seen from FIG. 3, a contact guide 34 protruding outward is formed on a part of the circumferential side of the lower case 31. As shown in FIG.

This contact guide 34 has an L1-shaped cross section, and has a guide groove 34a formed therein.

This guide groove 34a communicates with the inside of this lower case 31, and functions to guide and hold a switch contact 14, which will be described later.

Further, a shield case 4 is provided at the upper end of the upper case 32.
A hole 33 is formed corresponding to the opening 42 of No. 1 and for receiving a center conductor of a coaxial cable, which will be described later.

A clip 20, which is one of the features of this invention, is further housed inside the inner case 30.

The structure of this clip 20 will be explained in conjunction with FIG. 3.

The clip 20 is made of metal or conductive material.

The clip 20 is formed by joining two plates of approximately the same shape at their lower parts.

Both of the two plates have a longitudinal conductor portion 21, and a lifting tongue piece 22 and a terminal 23 are formed at the lower part of the conductor portion 21.

When the clip 20 is inserted into the inner case 30, that is, the lower case 31, the pulling tongue piece 22 comes into contact with the inner circumferential side wall of the inner case 30, that is, the lower case 31, and serves to hold the clip 20 fixedly.

The terminal 23 has a hole formed therein for soldering a lead wire of another component (not shown) therein.

Further, a receiving piece 24 is formed at one end of the conductor portion 21 in a protruding manner and is bent so that its tip is slightly opened outward.

These two receiving pieces 24, 24 cooperate to form a contact 25 that is connected to a switch contact 14, which will be described later.

Above the contact point 25 of the conductive portion 21, a protrusion 26 is formed at the end opposite to where the contact point 25 is formed.

The protrusion 26 is formed to prevent the clip 20 from wobbling when inserted into the inner case 30.

Therefore, the tip of the protrusion 26 is in contact with the inner peripheral side wall of the inner case 30, that is, the lower case 31.

A bending spring part 27 is formed above this protrusion 26 and is bent at a slightly obtuse angle in the length direction thereof.A bending spring part 27 is formed above this bending spring part 27 so that its tip is bent so as to spread outward. A receiving piece 28 is formed.

A side piece 28a is formed on one side of the receiving piece 28.

The receiving piece 28.28 and the side piece 28a constitute a funnel-shaped contact 29.

This funnel-shaped contact 29 is connected to the hole 33 of the upper case 32.
The center conductor 51 of the coaxial cable 50 inserted in the direction of the arrow A is inserted into the receiver and connected thereto.

The side surface of the bent spring portion 27 is sized so that it is pressed slightly inwardly by the inner circumferential side wall of the inner case 30, that is, the lower case 31, so that the center conductor 51 connected to the contact point 29 can be held under pressure.

Here, as a matter of course, the contact 25 is connected to the lower case 31.
The contact 29 faces the groove 34 a of the contact guide 34 provided in the upper case 32 , and the contact 29 faces the hole 33 provided in the upper case 32 .

Next, the configuration of the switch 10 will be similarly explained with reference to FIG. 3.

The switch 10 has a main body 1 made of, for example, synthetic resin.
1.

A knob 12 is formed approximately in the center of the upper surface of the main body 11 and stands upright therefrom.

The lower surface of the main body 11 is fitted into a groove (not shown) in the substrate 70, and is slidable in the direction of arrow B in FIG. 3, that is, in the left-right direction in FIG. 2A.

A spring portion 13 integrally molded with the main body is formed protrudingly on one side of the main body 11 .

This spring portion 13 has a protrusion 13a in the center of the center.

Therefore, this protrusion 13a is held elastically in the direction of arrow C in FIG. 3.

Further, a flat contact 14 extending in the sliding direction of the switch is attached to the lower part of the main body 11 so as to be able to slide integrally with the main body 11.

One end of the contact 14 has a substantially semicircular tip, and the other end is bent to form a terminal 14a (this is for specifying a lead wire of a balun transformer to be described later).

The structure for attaching this switch 1o to the substrate 70 will be explained in more detail with reference to FIGS. 4A, 4B and 4C.

FIG. 4A is a partial plan view showing a structure for attaching the switch 10 and the board 70, and FIG. 4B is a similar partial plan view.

Furthermore, FIG. 4C shows a cross-sectional view taken along line IVC-IVC in FIG. 4A.

Note that FIGS. 4A and 4B illustrate two different states when the switch 10 is slid.

As shown in FIG. 4C, the main body 1 of the switch 10
The lower part of 1 is fitted into the groove of the substrate 70.

Then, the spring part 13 of the main body 11, that is, the protrusion part 13 a
A locking portion 15 is formed protrudingly on the side surface opposite to the side surface where the locking portion 15 is located.

The upper surface of this locking portion 15 is substantially flat.

On the other hand, a locking portion 73 and a positioning portion 74 are formed on the substrate 70 so as to sandwich the switch body 11 fitted in this groove.

The locking portion 73 has a lower surface 73a that is connected to the locking portion 1.
Contact with the top surface of 5.

Therefore, the switch body 11 is prevented from falling off or coming off by the action of the locking portions 15 and 73 on one side thereof, and its sliding movement is guided.

The positioning portion 74 has two recesses or notches 74a and 74b, as can be clearly seen in FIG. 4A.

Both of these notches 74a and 74b have a size sufficient to receive the protrusion 13a held by the spring portion 13, and are large enough to hold the protrusion 13a inserted therein almost fixedly. be discovered.

As can be clearly seen from FIGS. 4A and 4B, the spring portion or protrusion 13a and the positioning portion 74 or cutouts 74a and 74b cooperate to position the switch body 11 at two different positions. .

At this time, since the protruding part 13a is elastically held by the spring part 13, when moving from one notch 74a to the other notch 74b, the resistance only increases slightly, and the switching can be easily performed. .

In this embodiment, the contact 14 is separated from the contact 25 of the clip 20 in the state shown in FIG. 4A, and is connected to or inserted into this contact 25 in the state shown in FIG. 4B.

That is, the state of FIG. 4B corresponds to the state of FIG. 2A, and the state of FIG. 4A corresponds to the state of FIG. 2B.

In this way, the switch contacts 14 can be brought into selective contact with the contacts 25 of the clip 20.

As shown in FIG. 2B, when the switch 10 is in the state shown in FIG. 4A, that is, when the contact 14 is separated from the contact 25, the contact 14 is held in the groove 34a of the contact guide 34 formed in the lower case 31. It is in a state of being

FIG. 5 is a diagram showing the electrical connections of this preferred embodiment.

The coaxial cable 50 includes a jacket conductor 52 and a center conductor 51, and the center conductor 51 is connected to the opening 42 of the shield case 41.
and the clip 20 through the hole 33 of the upper case 32.
is inserted or connected to one contact 29 of the.

Further, the conductor portion 21 of this clip 20, that is, the terminal 23
is connected to one input of the well-known CR composite component 4.

At the same time, the outer conductor 52 of the coaxial cable 50 is
It is connected to the other input of the R composite component 4.

One output of the CR composite component 4 is connected to the center conductor 61 of a coaxial cable 60, and the other output is connected to its jacket conductor 62 for providing as a tuner input for a television receiver.

In this way, 7
When connecting a 5Ω coaxial cable, the switch 10 is switched to the state shown in FIG. 2B, that is, FIG. 4A.

In this way, the contact 14 is separated from the contact 25 and is not influenced by the input from the feeder terminal 2.

In addition, when connecting a 300Ω feeder wire to this antenna terminal plate, the switch 10 is
Set it to the state shown in the figure.

Contact 14 then contacts contact 25.

Note that the coaxial cable 50 is not connected at this time.

The parallel lines of the feeder lines 5 are connected to the feeder terminals 2, respectively.

One feeder terminal 2 is connected to one input of a well-known balun transformer 3 for impedance conversion, and the other feeder terminal is connected to the other input of this balun transformer 3.

One output of the balun transformer 3 is connected to a terminal 14a of a contact 14 provided at the switch 10, and the other output is connected to the other input of the CR composite component 4.

At this time, since the contact 14 is connected to the contact 25, a signal from the feeder line 5 is applied to the coaxial cable 60.

FIGS. 6A and 6B show other embodiments of the mounting structure of the switch 10.

In construction, this embodiment differs from the embodiment shown in FIGS. 4A to 4C by forming two cutouts 11 a and 11 b in the switch body 11.

The substrate 70 has these notches 11 a, 11
A support portion 75 is formed on the b side, and one end of the spring portion 76 is held by this support portion 75.

The tip of this spring portion 76 is formed as a protrusion 76a.

Therefore, the projection 76a is held elastically in the direction of the arrow in FIG. 6A by the action of the spring 76.

4A or 4B, the notch 11a and the protrusion 76a are engaged in one position, and the notch 11 is in the other position.
b and the protrusion 76a are engaged.

In this way, switching or positioning of the switch 10 is configured.

In each of the above-mentioned embodiments, the locking portion 15 formed on the switch body 11 was formed to protrude, but this was done by forming a groove parallel to the length direction of the switch body 11 as shown in FIG. Alternatively, the distal end of the locking portion 73 may be engaged or fitted.

As described above, according to this invention, there is a cylindrical shield case having openings at both ends, an inner case made of an insulating material housed inside the shield case and having holes at both ends corresponding to the openings, and an inner case. a protruding part formed on the circumferential side of the shield case to protrude outward and having a groove communicating with the inside of the inner case; a slit formed in the shield case to receive the protruding part; A first connection part is formed at a position opposite to one hole of the case to connect the center conductor of the coaxial cable, and a first connection part is formed at a position opposite to the groove of the protrusion in a direction perpendicular to the long direction thereof, and an external a clip of electrically conductive material including a second connection for connecting a circuit contact, the external contact extending from the switch in a perpendicular direction, the tip of which extends from the switch in a first position of the switch and a second connection part for connecting a circuit contact; Since it is configured to be connected to the connection part of the switch and disconnected from the second connection part in the second position of the switch, it is possible to selectively connect the contact between the coaxial cable and another external circuit other than the coaxial cable. It is possible to obtain a plug seat that can be used to

In particular, since this invention has the above-mentioned configuration, it is possible to configure the connection switching part by just slightly improving the F type connector seat, so the connection switching part can be configured without impairing the shielding characteristics as a high frequency connector. Since it is possible to configure the mechanism, and only a few components such as external circuit contacts are added to the F-type connector, the overall shape can be dramatically reduced, and it can be manufactured at low cost. obtain.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the main parts of an antenna terminal plate as a preferred embodiment of this invention. FIG. 2A shows a sectional view taken along line IIA--IIA in FIG. 1, and FIG. 2B shows another state corresponding to FIG. 2A. FIG. 3 is a perspective view of the main parts showing the characteristic parts of this invention. 4A to 4C are both illustrative views showing the structure of the switch 10 and its mounting, and FIG. 4A is a plan view,
FIG. 4B is a plan view showing another state corresponding to FIG. 4A, and FIG. 4C is an elastic sectional view taken along line IVC-IVC in FIG. 4A. FIG. 5 is a diagram showing the electrical connections of the antenna terminal plate as a preferred embodiment of this invention. 6A and 6B are both illustrative views showing other embodiments of the structure for mounting the switch, and FIG. 6A is a plan view, and FIG. 6B is a sectional view taken along line VIBVIB in FIG. 6A. FIG. 7 is an illustrative view showing another embodiment of the switch mounting structure. In the figure, 1 is a terminal board, 2 is a feeder terminal, 3 is a balun transformer, 4 is a CR composite part, 5 is a feeder wire, 10
is a switch, 13.76 is a spring part, 13a. 76 a is a protrusion, 14 is a contact, 20 is a clip, 25
and 29 is a contact, 27 is a bending spring part, 30 is an inner case, 31 is a lower case, 32 is an upper case, 33 is a hole,
34 is a contact guide, 40 is a plug seat, 41 is a shield case, 50 and 60 are coaxial cables, 70 is a board, 71
72 is a hole, 73 is a locking portion, 74 is a positioning portion,
74 a and hif 4b, lla and 11b are notches,
75 indicates a support portion.

Claims (3)

[Scope of utility model registration request] (1) A connector seat for connecting a coaxial cable and a contact point from an external circuit other than the coaxial cable, which is a cylindrical shield case with openings at both ends; an inner case made of an insulating material that is housed and has holes at both ends corresponding to the opening; a protrusion formed on a circumferential surface of the inner case to protrude outward and has a groove communicating with the inside of the inner case; a slit formed in the shield case to receive the protrusion, and a slit provided inside the inner case at a position opposite to one hole of the inner case for connecting the center conductor of the coaxial cable. A clip made of a conductive material, including a first connecting part and a second connecting part formed perpendicularly to the longitudinal direction of the protruding part at a position opposite to the groove of the protruding part for connecting the external circuit contact. and wherein the external contact extends from the orthogonally sliding switch and has a distal end disposed in the second position in the first position of the switch.
is connected to the connection of the second switch in the second position of the switch.
A coaxial cable connector that can be removed from the connection. (2) The slit formed in the shield case is formed on the side surface of a similar shield case from one open end, and the protrusion of the inner case is fitted into the slit from the one front end. A connector seat for the coaxial cable described in item 1. (3) The coaxial cable connector seat according to claim 1 or 2, wherein the protrusion has a cross-sectional shape.