KR200392631Y1 - Apparatus for adjusting angle of antenna in a digital multimedia broadcasting receiver - Google Patents

Abstract

Disclosed is an antenna angle adjusting device of a receiver for receiving a DMB signal. The antenna angle adjusting device is for adjusting the signal reception angle of the antenna for receiving a DM signal coupled to the DM receiver, the receiver housing having an accommodating portion, an antenna housing formed to be selectively accommodated in the accommodating portion, the inside of the antenna housing Is installed in the support while the antenna housing is rotated rotational stop position, that is made of an angle adjusting portion for adjusting the rotation angle of the antenna housing. According to the antenna angle adjusting device of the present DM receiver, the antenna coupled to the receiver can be adjusted at various angles, so that the antenna can always be directed to the DM station or the broadcast assistant station at an optimal orientation angle, and thus the DMB signal. The effect that the reception ratio of can be improved is provided. In addition, since the angle adjusting device is installed inside the housing of the antenna so as to be elastically supported by the elastic member, the operation of coupling or detaching the antenna to the receiver housing can be performed quickly and easily.

Description

Antenna angle adjuster of DMB receiver {APPARATUS FOR ADJUSTING ANGLE OF ANTENNA IN A DIGITAL MULTIMEDIA BROADCASTING RECEIVER}

The present invention relates to an antenna angle adjusting device of a DM receiver, and more particularly, to an antenna angle adjusting device that can improve a reception ratio of a DM signal by adjusting an antenna for receiving a DM signal at various angles.

As is well known, DMB (DIGITAL MULTIMEDIA BROADCASTING Digital Multimedia Broadcasting) is a new service that enables CD-level sound quality and data or video services, such as CD-quality sound and data or video service, even when outdoors or on the go through portable or in-vehicle receivers. .

Such DMBs may be classified into terrestrial DMMBs and satellite DMMBs.

Terrestrial DMB is a system that transmits a signal from a terrestrial DMB broadcasting center to a transmission tower (terrestrial DMB broadcasting station) and transmits a signal to each terminal. Satellite DMB is a system that launches satellites (satellite DMB broadcasting stations) outside the atmosphere to spread broadcasting signals in a much higher frequency band than terrestrial DMB. At this time, an area (shading area) where it is difficult to receive a signal due to an obstacle may transmit a signal using a broadcasting assistant station. That is, in a shaded area, a signal may be received through a broadcasting subsidiary station, and in a shaded area, a signal may be directly received from a DMB broadcasting station (satellite or transmission tower).

The DMB may overcome spatial limitations through a portable terminal (receiver), and may have a personal media such as a TV in my hand and my own broadcast. In addition, as described above, various contents such as text, graphics, moving pictures, and data as well as high-quality audio at the CD level can be provided, thereby enabling a broadcast service fused with communication.

Such a DM system transmits a broadcast signal or a data signal including video / audio components from a broadcasting center to a DM broadcast station, and the DM broadcast station transmits the received signal to an unspecified number of destinations. The receiver can be directly received by a portable receiver (mobile communication terminal, etc.), and in particular, in a shaded area, a signal can be received through a broadcasting assistant station.

In this situation, there is a need for a DM signal receiving antenna for receiving a DM signal. The DM signal receiving antenna must be maintained at a position that is always directed to a DM station or an auxiliary station to obtain an optimal reception ratio of the signal. have. Accordingly, various methods have been studied and put into practical use in order for the DMB signal receiving antenna to always be directed to the DMB broadcasting station or the broadcasting subsidiary station at an optimum direction angle.

As a representative prior art, a vehicle satellite signal receiving antenna (mobile repeater having an amplifier) disclosed in Korean Patent Laid-Open Publication No. 2004-62508 is fixedly installed on the roof of a vehicle or the trunk of a vehicle. High, but can not receive a signal leaving the vehicle, causing a problem that is installed in a damaged state of the trunk or roof panel of the vehicle.

In addition, a receiver is provided in which the antenna is integrated with the DM receiver for easy portability. However, in this case, since the antenna is fixed to the main body housing, the DM signal receiving antenna is always at the optimum angle of view. There was a problem that the reception ratio was lowered because the station could not be directed.

The present invention has been made in order to solve the problems of the prior art as described above, the technical problem of the present invention is to receive the DMB signal receiving antenna for receiving the DMB signal can be adjusted at various angles to receive the DMB signal reception ratio To provide a means to improve the.

In order to solve the above technical problem, the present invention,

A receiver housing having a receiving portion for receiving an antenna for receiving a DMB signal formed on a rear surface thereof, a coupling hole formed at one side of an inlet of the housing, and a hinge hole formed at the other side of the inlet;

 An antenna housing having a through hole opened to the coupling hole side and formed on one side thereof, and an antenna housing on which the rotating housing is rotatably coupled to the hinge hole; And

In the installation portion through the through hole through the through-hole is fitted in the fitting portion to prevent the coupling is formed on one side and the other end is a hollow fixed cam of the plurality of locking grooves formed radially, the locking jaw of the fixed cam At least one catching protrusion is formed on one end of the rotary cam so that the outer surface is fitted to the installation unit to prevent rotation, and is installed between the other end surface of the rotary cam and the inner wall of the installation unit to elastically support the rotation cam to the fixed cam side. It provides an antenna angle adjusting device of the DM receiver comprising: an angle adjusting unit having an elastic member for.

The fitting portion is characterized in that the contact surface in contact with the parallel contact surface of the coupling hole is formed on both sides so as not to rotate in the state fitted in the coupling hole.

One end surface of the rotary cam is inserted into the fixed cam is characterized in that the fitting end for supporting so as to maintain the temporary coupling state with the fixed cam is formed.

The other end surface of the rotary cam is characterized in that the support end for supporting the elastic member protrudes to prevent the separation of the elastic member.

Preferred embodiments of the present invention having the features as described above will be described in detail with reference to the accompanying drawings.

1 to 3, the antenna angle adjusting device according to the present invention is for adjusting the signal reception angle of the antenna for receiving the DMB signal 20 coupled to the DM receiver 10, the receiving unit 14 A receiver housing 12 having an antenna, an antenna housing 22 formed to be selectively accommodated in the accommodating part 14, and installed inside the antenna housing 22 to support the antenna housing 22 to be rotated while being rotated. It consists of an angle adjuster 40 for adjusting the stationary position, that is, the angle of rotation of the antenna housing 22.

Looking at this in more detail as follows.

The receiver housing 12 has a display portion formed on the front surface and a receiving portion 14 into which the antenna 20 is inserted on one side of the rear surface. This accommodating portion 14 has a structure in which both sides (back side and top side) are opened as shown in FIG. And one side of the inlet (upper surface side) of the accommodating portion 14 is formed with a coupling hole 16 having a contact surface 16A facing each other, and the other side has a structure in which a circular hinge hole 18 is formed.

The antenna housing 22 forms a receiver antenna 20 as shown in FIG. 1, and an installation unit 24 for installing an angle adjusting unit 40 to be described later is formed on one side of the antenna housing 22, and the installation unit ( One side wall of 24 is formed with a through hole 24A facing the coupling field 16 side. And the outer side of the other side is formed with a rotation projection 26 to be rotatably fitted to the hinge hole (18).

The angle adjuster 40 is installed on the mounting part 24 to adjust the angle of the antenna housing 22, and selectively rotates while interfering with the non-rotating fixed cam 42 and the fixed cam 42. The rotating cam 44 is composed of an elastic member 46 for elastically supporting the rotary cam 44.

The fixed cam 42 is formed in a hollow shape, as shown in Figure 1, the fitting portion 42A is formed to be one end, the other end surface has a structure in which a plurality of engaging grooves 42B are formed radially. The fixed cam 42 is fitted to the coupling hole 16 through the through hole 24A in the fitting portion 42A inside the installation portion 24. At this time, since the contact surface 42C formed on both sides of the fitting portion 42A is in contact with the contact surface 16A of the coupling hole 16, the rotation of the fixed cam 42 is prevented. That is, since the polygonal fitting portion 42 is fitted into the coupling hole 16 having the contact surface 16A, the rotation of the fitting portion 42 is prevented.

The rotary cam 44 has at least one locking protrusion 44A interfering with the locking groove 42B of the fixed cam 42 protruding from one end thereof, and a support end for supporting the elastic member 46 at the other end thereof. 44C) is formed to protrude. And the fitting end 44B for inserting into the inside of the fixed cam 42 is maintained in the center of the end surface on which the engaging projection 44A is formed so as to maintain a temporary engagement with the fixed cam 42 is formed. The rotary cam 44 is rotated together with the antenna housing 22 by its outer surface is fitted to the mounting portion 24.

The elastic member 46 is for elastically supporting the locking projection 44A of the rotary cam 44 to be in close contact with the locking groove 42B. The elastic member 46 may be formed of a coil spring, and may be made of elastic rubber, synthetic resin, or the like. Can be configured. The elastic member 46 is installed so that the other end is supported on the inner wall of the installation portion 24 in the state that one end is coupled to the support end 44C of the rotary cam 44.

Referring to the operation of the present embodiment configured as described above are as follows.

As shown in FIG. 3, the fitting portion 42A of the fixed cam 42 is fitted into the coupling hole 16 through the through hole 24A in the inside of the installation part 24, and the rotary cam 44 is coupled thereto. The fitting end 44B is inserted into the fixing cam 42 by the elasticity of the elastic member 46, and at the same time, each of the engaging protrusions 44A is inserted into the selected locking groove 42B and is caught. And the rotary cam 44 is fitted to the installation portion 24 is in a state integrated with the antenna housing 22.

In this state, as shown in FIGS. 4A, 4B, and 4C, the antenna 20 may be adjusted to various angles within an allowable angle (about 180 °). That is, the antenna 20 can be fixed at an angle that can increase the reception ratio of the DMB signal.

As such, when the angle is adjusted by rotating the antenna 20, the adjusted angle is fixed, which is enabled by the fixed cam 42 and the rotating cam 44 as shown in FIGS. 5A and 5B. This will be described in more detail as follows.

The rotating protrusion 26 of the antenna housing 22 is inserted into the hinge hole 18, and the fixed cam 42 has the fitting portion 42A inserted into the coupling hole 16 through the through hole 24A to prevent rotation. The rotating cam 44 is elastically supported toward the fixed cam 42 by the elasticity of the elastic member 46. As shown in FIG. 5A, the locking protrusion 44A of the rotating cam 44 is It is a state inserted into the locking groove 42.

In this state, when the user rotates the antenna 20 at a predetermined angle, as shown in FIG. 5B, the antenna is rotated using the antenna housing 22 and the rotating protrusion 26 as a rotating shaft, and at this time, the integrated rotating cam 44 ) While overcoming the elasticity of the elastic member 46 moves to the elastic member 46, the locking projection 44A is released from the locking groove 42. And the locking projection (44A) exiting the locking groove 42 is inserted into the neighboring locking groove 42 again.

This operation is because the rotary cam 44 is elastically supported toward the fixed cam 42 by the elastic member 46.

As the antenna 20 is rotated as described above, since the locking protrusion 44A is inserted into and fixed to each of the locking grooves 42 sequentially, the antenna 20 can be adjusted at various angles.

That is, when the antenna 20 is rotated, the engaging protrusion 44A is allowed to rotate while reversing (moving toward the elastic member 46), and when the rotating stops, the engaging protrusion 44A is inserted into the engaging groove 42. It will keep the angle adjusted.

Therefore, since the antenna 20 can be adjusted at various angles within the allowable range 180 °, the antenna 20 or the broadcasting assistant station can be directed at the optimal directivity at all times, so that the reception ratio can be improved.

The antenna angle adjusting device of the DM receiver according to the present invention can adjust the antenna coupled to the receiver at various angles, so that the antenna can always be directed to the DMB broadcasting station or the broadcasting assistant station at an optimum direction angle. The effect is that the reception ratio of the signal can be improved. In addition, since the angle adjusting device is installed inside the housing of the antenna so as to be elastically supported by the elastic member, the operation of coupling or detaching the antenna to the receiver housing can be performed quickly and easily.

1 is a partially exploded perspective view showing an antenna angle adjusting device according to the present invention.

Figure 2 is a perspective view showing a coupling state of the antenna angle adjustment device shown in FIG.

Figure 3 is a cross-sectional view showing a coupling state of the antenna angle adjustment device shown in FIG.

Figure 4a, 4b, 4c is a side view showing a state in which the angle of the antenna is adjusted by the antenna angle adjustment device shown in FIG.

5A and 5B are cross-sectional views of an operating state for explaining the operation of the angle adjusting device of the antenna;

<Description of the symbols for the main parts of the drawings>

10: DM receiver 12: housing

14: accommodating unit 16: combined long hole

16A: contact surface 18: hinge hole

20: antenna 22: housing

24: mounting portion 24A: through hole

26: rotating projection 40: angle adjustment unit

42: fixed cam 42A: fitting portion

42B: Locking groove 42C: Close contact surface

44: rotating cam 44A: jamming projection

44B: fitting end 44C: support end

Claims (4)

A receiver housing having a receiving portion for receiving an antenna for receiving a DMB signal formed on a rear surface thereof, a coupling hole formed at one side of an inlet of the housing, and a hinge hole formed at the other side of the inlet;  An antenna housing having a through hole facing the coupling hole side formed at one inner side thereof, and an antenna housing having a rotating protrusion rotatably coupled to the hinge hole at the other side thereof; And In the installation portion through the through hole through the through-hole is fitted in the fitting portion to prevent the coupling is formed on one side and the other end is a hollow fixed cam of the plurality of locking grooves formed radially, the locking jaw of the fixed cam At least one catching protrusion is formed on one end of the rotary cam so that the outer surface is fitted to the installation unit to prevent rotation, and is installed between the other end surface of the rotary cam and the inner wall of the installation unit to elastically support the rotation cam to the fixed cam side. An angle adjusting unit having an elastic member for the; antenna angle adjusting device of the DM receiver comprising a. The antenna angle adjusting device of the DM receiver of claim 1, wherein the fitting part is formed on both sides of the contact surface in contact with the parallel contact surface of the coupling hole so that the fitting portion is not rotated while being fitted in the coupling hole. The antenna angle of the DMB receiver according to claim 1 or 2, wherein a fitting end is formed at one end of the rotary cam to be inserted into the fixed cam so as to be maintained in a coupling state with the fixed cam. Regulator. The antenna angle adjusting device of the DM receiver of claim 3, wherein a support end for supporting the elastic member protrudes from the other end surface of the rotary cam to prevent the elastic member from being separated.