WO2009108000A2 - Connector for dmb antenna - Google Patents

Abstract

A connector for a DMB antenna comprises an antenna connector and a coaxial connector. The antenna connector includes an antenna coupling unit at one end thereof as well as a cylindrical guide unit, which includes connector pins protruding from the center, at the other end thereof. The cylindrical guide unit is coupled to a coaxial connector by sliding into the inside of the circumference thereof. The cylindrical guide unit comprises plural elastic portions between each of which a gap is placed. Convex stopper protrusions are formed at the end portion of the guide unit. A jack to which a connector pin is connected is placed in the center of the coaxial connector, and the coaxial connector includes stopping grooves into which the stopper protrusions are inserted. An insulating ring for preventing rotation made of a plastic ULTEM material is placed between the cylindrical guide unit and the antenna coupling unit. Since the insulating ring is extended between the cylindrical guide unit and the connector pin, a protecting tube for a jack which encloses the connector pin is formed. A jack insertion groove into which an insulation supporting tube is inserted is formed inside the circumference of the protecting tube. Right and left concave insertion portions which are cut in an arc shape are additionally prepared at both sides in the rear portion of the cylindrical guide unit. The jack is enclosed by the insulation supporting tube, and then inserted into the jack insertion groove. Since left and right convex insertion parts formed inside the circumference of the coaxial connector are coupled with the left and right concave insertion parts, the rotation of the guide unit can be prevented. In this invention, the concave and convex insertion parts, which are coupled by their matching shapes, are formed inside the circumferences of both the coaxial connector and the cylindrical guide unit without an additional component. Therefore, the manufacturing cost can be saved. The insulating ring for preventing rotation, which is used as both an insulating member and an anti-rotation member between the connector pin and the antenna connector, is made of a plastic ULTEM which is extremely hard and very resistant against thermal shrinkage or thermal expansion. Hence, there is no inconvenience in the usage, and the durability of the connector can be extended. Furthermore, noise can be reduced since the antenna is not shaken. Thereby a clearer image can be reproduced on a screen.

Description

Connector for DM Receiver Antenna

The present invention relates to a connector for a DM receiver antenna, and more particularly, to reduce the parts by forming recesses and protrusions respectively fitted to the inner circumference of the coaxial connector and the inner periphery of the tip of the cylindrical guide without additional components. It is an insulation member between the connector pin and the antenna connector, and it is a non-rotation member. It has a relatively strong strength and almost no shrinkage or expansion due to temperature change by using a plastic Ultem, which is a material that has little heat shrinkage or thermal expansion. The present invention relates to a connector for a DM receiver antenna, which has no inconvenience and has a longer service life, and an antenna is not shaken, thereby reducing noise and reproducing the picture quality more clearly.

In general, a portable mobile communication terminal is provided with a coaxial connector to connect an antenna for receiving digital multimedia broadcasting (DMB). The DMB receiving antenna is equipped with an antenna connector at its tip and connected to the coaxial connector of the mobile communication terminal.

In recent years, the portable mobile communication terminal has a tendency to emphasize multimedia functions such as listening to music, watching a video such as a picture, a movie or a video, and making a video call. An antenna for receiving terrestrial and satellite DMBs is a terminal receiving terrestrial and satellite DMBs. In this case, the antenna for receiving terrestrial and satellite DMBs has a relatively large size compared to the size of the terminal in order to exhibit good reception performance. It is installed in an external structure which is fixed or fixed.

Since the conventional coupling structure of the antenna connector and the coaxial connector adopts the socket coupling method by simply screwing, the screw coupling is loosened while rotating the antenna, so that the coupling between the antenna connector and the coaxial connector often becomes poor. There was a problem.

Moreover, the user did not know whether the antenna connector and the coaxial connector were securely coupled, and thus the terrestrial wave or satellite wave was received in a poor connection state, and thus a proper image was not output.

In order to solve this problem, to increase the coupling force between the antenna connector and the coaxial connector and prevent the antenna connector from rotating, having an antenna connection on one side, at least one anti-rotation protrusion protruding from the end of the peripheral portion formed An antenna connector having a cylindrical structure in which a connector pin protrudes from the center portion; At least one groove formed at a periphery of the antenna connector is coupled to the periphery of the antenna connector, and a jack to which the connector pin is coupled is formed at a central portion thereof, and is formed of a coaxial connector having a connection cable at an output line of the jack; The antenna connector further comprises a cylindrical guide portion for guiding sliding coupled into the peripheral portion of the coaxial connector, the cylindrical guide portion is made of a plurality of pieces; The end portion of the cylindrical guide portion further comprises a convex projection for convex outward, and the connector for the DM receiver antenna of the mobile communication terminal, characterized in that formed in the coaxial connector further comprises a locking groove into which the locking projection of the cylindrical guide portion is inserted. The patent registration was announced on December 14, 2007.

However, such a conventional connector has a structure in which the anti-rotation protrusion of the antenna connector is inserted into the coupling groove of the coaxial cable, and attempts to prevent the rotation of the antenna connector at the same time to secure the coupling between the antenna connector and the coaxial cable, but the anti-rotation protrusion is formed. As a separate ring body is required, the manufacturing cost increases as parts increase, and there is a problem that various foreign substances are inserted into the coupling groove in the coaxial cable into which the anti-rotation protrusion is inserted.

In addition, the insulation member interposed between the connector pin of the antenna connector and the antenna connection part is made of acetal (POM; Poly Oxy Methylene), which is a kind of engineering plastic. Since the furnace is weak in strength, there is a problem that the antenna connection easily turns away due to external force after a certain time of use.

In particular, the conventional connector structure composed of acetal is sensitive to thermal changes according to the temperature, especially when exported to the tropics or cold Eastern Europe or Russia, the thermal expansion and stiffness when the temperature rises, so that the rotational use of the antenna is made easy When the temperature is lowered due to cold or cold, heat shrinks and loosens, which makes it difficult to fix the antenna.

In addition, there is a problem that the noise of the antenna is gradually increased, the image quality is lowered, and the life is greatly shortened.

The present invention has been made to solve the above problems, by reducing the parts by reducing the parts by forming the recessed parts and protrusions respectively fitted to the inner periphery of the coaxial connector and the inner end of the cylindrical guide portion without the addition of other components It is an insulated member between the connector pin and the antenna connector, and it is a non-rotation member. It has a relatively strong strength and has no thermal contraction or thermal expansion. It is also an object of the present invention to provide a connector for a DMB receiving antenna that has a longer lifespan and a longer antenna life.

The plastic ULTEM is polyetherimide (PEI), developed by US General Electric (GE), and is a special heat-processing material used for electric, electronic, spacecraft, and aircraft interior parts.

In order to achieve the above object, the present invention has an antenna connecting portion at the other end, and a cylindrical guide portion for sliding guide coupled to the inner periphery of the coaxial connector is formed in a cylindrical structure with a connector pin protruding from the center at one end, the cylindrical guide portion An antenna connector in which the front side is formed of a plurality of elastic pieces by the cutout portion, and the end portion of the cylindrical guide portion is formed with a projection which is convex outwardly; In the connector for a DM receiver antenna comprising a coaxial connector formed in the center of the jack is coupled to the connector pin, the engaging groove is inserted into the locking projection of the cylindrical guide portion;

The antenna connector is insulated between the cylindrical guide portion and the antenna connecting portion through an anti-rotation insulation ring made of plastic Ultem (ULTEM) material, the anti-rotation insulation ring extends between the cylindrical guide portion and the connector pin to connect the connector pins. A jack protection tube is formed to wrap, and a jack insertion groove into which an insulation support tube is inserted is formed at an inner circumference of the jack protection tube, and further comprising left and right insertion recesses cut into arc shapes at both rear ends of the cylindrical guide part;

The coaxial connector is insulated by the jack is surrounded by an insulating support tube is inserted into the jack insertion groove, the left and right insertion protrusions that are fitted to the left and right insertion recesses corresponding to the inner periphery of the jack respectively protruding to form a rotation of the coaxial connector. There is a characteristic to prevent.

As such, the present invention reduces the manufacturing cost by reducing parts by forming recesses and protrusions that are fitted to the inner periphery of the coaxial connector and the inner end of the cylindrical guide portion without the addition of other components, respectively, thereby reducing the manufacturing cost, and between the connector pin and the antenna connector. It is an insulating member of the anti-rotation member and has a relatively strong strength and has no thermal contraction or thermal expansion. Also, there is no shaking of the antenna, and noise is reduced, so that the picture quality is reproduced more clearly.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is an exploded perspective view illustrating a fastening view of a connector for a DM receiver antenna according to an embodiment of the present invention;

2 is a perspective view showing a state of a connector for a DM receiver antenna according to an embodiment of the present invention;

3 is a side cross-sectional view of a connector for a DMB receiving antenna according to an embodiment of the present invention;

Figure 4 is a perspective view showing a state of use of the connector for the DM receiver antenna according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: antenna connector 11: antenna connection

11a: antenna 12: connector pin

13: cylindrical guide part 13a: cutout part

13b: elastic piece 13c: locking projection

14: anti-rotation ring 14a: jack protection tube

14b: Jack insertion groove 15,15a: Left and right insertion recesses

20: coaxial connector 21: jack

21a: output line 22: insulated support tube

23: engaging groove 24, 24a: left and right insertion protrusion

30: DMB main body

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a fastening view of a connector for a DM receiver antenna according to an embodiment of the present invention, FIG. 2 is a perspective view showing a connector for a DM receiver antenna according to an embodiment of the present invention, and FIG. 3 is a DM receiver antenna according to an embodiment of the present invention. Figure 4 is a side cross-sectional view of the connector for use, and is a perspective view showing a state of use of the connector for the DM receiver antenna according to an embodiment of the present invention.

For reference, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof is omitted.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator.

Therefore, the definition should be made based on the contents throughout the specification.

The connector for the DMB receiving antenna of the present invention has one end coupled to the coaxial connector 20 and the other end coupled to the antenna connector 10 and one end coupled to the antenna connector 10 and the other end outputted. It consists of a coaxial connector 20 connected to a pcb substrate (not shown) of the device via a line 11a.

The antenna connector 10 is a connector, one end is coupled to the coaxial connector 20 and the other end is a connector for fastening the antenna (11a), the other end has an antenna connection portion 11, at one end is a connector pin that is a conductor from the center Cylindrical structure (12) protruding cylindrical guide portion 13 is formed for the guide slidingly coupled to the inner periphery of the coaxial connector 20, the cylindrical guide portion 13 is the front side by the cutting portion (13a) It is made of a plurality of elastic pieces (13b) is separated, the end of the cylindrical guide portion 13 is formed with a projection (13c) for convex outwardly, between the cylindrical guide portion 13 and the antenna connecting portion 11 Insulation is interposed between the anti-rotation insulation ring 14 made of a plastic ULTE material, and the anti-rotation insulation ring 14 extends between the cylindrical guide part 13 and the connector pin 12 to extend the connector pin 12. Jack protective tube 14a is formed to surround the In addition, a jack insertion groove 14b into which the following insulating support tube 22 is inserted is formed at the inner circumference of the jack protection tube 14a, and the left and right insertion recesses 15 which are cut in an arc shape at both rear ends of the cylindrical guide part 13 are formed. And 15a are formed respectively.

The coaxial connector 20 is one end coupled to the antenna connector 10 and the other end is a connector that is connected to the pcb substrate (not shown) of the device through the output line (11a), the connector pin 12 is coupled to the jack (21) is formed in the central portion, and the engaging groove (23) into which the engaging projection (13c) of the cylindrical guide portion 13 is inserted is formed in the inner circumference, and the jack (21) is insulated support tube (22) Wrapped and insulated and inserted into the jack insertion groove 14b, the left and right insertion protrusions 24 and 24a fitted to the left and right insertion recesses 15 and 15a are protruded to correspond to the coaxial connector, respectively. Prevent the rotation of (20).

In the present invention as described above, the cylindrical guide portion 13 of the antenna connector 10 is coupled to the antenna connector 11 in the state in which the coaxial connector 20 is fixed to the DM device main body 30 is caught. At the same time, the connector pin 12 is inserted into the jack 21 enclosed in the insulated support tube 22 and energized while the insulated support tube 22 is elastically coupled to the groove 23, and the insulated support tube 22 is the jack of the anti-rotation insulation ring 14. It is inserted and fixed in the jack insertion groove 14b of the protective tube 14a.

In addition, the left and right insertion protrusions 24 and 24a of the coaxial connector 20 are inserted into and fixed to the left and right insertion recesses 15 and 15a of the antenna connector 10.

In this state, the pcb board inside the DM device main body 30 via the jack 21 of the coaxial connector 20 via the connector pin 12 to the wireless signal detected through the antenna (11a) connected to the antenna connector 11 You will be able to watch the image on the screen you want.

At this time, the antenna 11a fixed to the antenna connector 11 of the antenna connector 10 has a suitable frictional force inside the anti-rotation insulation ring 14 made of a plastic ULTEM material having little heat shrinkage or thermal expansion according to external temperature change. It rotates smoothly and induces to watch desired image with less noise.

Claims (1)

1. A cylindrical guide part having an antenna connection part at the other end and a cylindrical structure having a connector pin protruding from the center part at one end thereof is formed to guide the sliding guide to the inner side of the coaxial connector. An antenna connector having a cylindrical guide portion end portion formed with a projection for convex outwardly; In the connector for a DM receiver antenna comprising a coaxial connector formed in the center of the jack is coupled to the connector pin, the engaging groove is inserted into the locking projection of the cylindrical guide portion;

   The antenna connector further includes left and right insertion recesses cut in an arc shape at both rear ends of the cylindrical guide part, and is insulated between the cylindrical guide part and the antenna connection part by interposing an anti-rotation insulating ring made of a plastic ULTE material. The anti-rotation insulation ring extends between the cylindrical guide portion and the connector pin to form a jack protection tube surrounding the connector pin, and further includes a jack insertion groove into which the following insulating support tube is inserted at an inner circumference of the jack protection tube;

   The coaxial connector is protruded to correspond to the left and right insertion protrusions respectively fitted to the left and right insertion recesses on the inner periphery of the coaxial connector to prevent rotation of the coaxial connector, but the jack is wrapped and insulated by an insulated support tube and inserted into the jack insertion groove Connector for receiving DM antenna, characterized in that inserted.

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