KR100632527B1 - Amplifier case for car antenna - Google Patents

Abstract

A case body 30 accommodating an amplifying circuit board S electrically connected to the antenna element 130 mounted outside the vehicle body panel P and a nut N used for coupling the antenna element 130; The case body 30 is covered from the opposite side of the vehicle body panel P, and the case lid body 40 in which the opening 44 is formed at a position corresponding to the nut N, and the case lid body 40 in a predetermined direction. It is mounted so as to reciprocate and has an opening and closing lid 50 for opening and closing the opening 44, the case body 30, the case lid 40, the opening and closing lid 50 is formed of a conductive resin .

Description

Amplifier case for car antenna {AMPLIFIER CASE FOR AUTOMOBILE ANTENNA}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an amplifier case for an automobile antenna accommodating a power amplifier of an automobile antenna, and more particularly, to an easy mounting operation and a reduction in high frequency noise.

There are various types of antenna devices for automobiles, but for example, a type in which a rod-shaped antenna element is mounted directly on a vehicle body is known (for example, Japanese Patent Laid-Open No. 1997-69708). FIG. 10 shows an example of such an antenna device 10 for automobiles. In Fig. 10, reference numeral P denotes a vehicle panel, and reference numeral C denotes a coaxial cable. The antenna device 10 includes an antenna element 11 and an amplifier case 12 for an automobile antenna made of a synthetic resin material in which the antenna element 11 is detachably mounted. The amplifier case 12 for the automobile antenna is disposed inside the vehicle panel P, and the element holder protrusion 13 protrudes from the mounting hole Pa formed in the vehicle panel P, so that the element holder protrusion 13 protrudes. The mounting nut 14 is fastened to the screw portion 13a formed on the outer circumference of the car), so that the amplifier case 12 for the car antenna is fixed to the vehicle panel P.

A small housing 15 is mounted and fixed on the mounting nut 14 so as to cover the mounting nut 14, and in this state, the element mounting jig 11a extending from the lower end of the antenna element 11 is connected to the housing 15. ) Is inserted into the element holder protrusion 13 from above. A connection bracket (not shown) is mounted inside the element holder protrusion 13. And the antenna element 11 is fixed to the amplifier case 12 for automobile antennas by fastening the element mounting screw part 11b formed in the lower end part of the element mounting jig 11a to the connection bracket.

Summary of the Invention

The amplifier case for an automobile antenna assembled to the above-described antenna device has the following problems. That is, since the element holder protrusion 13 protrudes outward of the vehicle panel P, there is a problem that the protruding element holder protrusion 13 introduces noise from the outside. Moreover, when attaching the mounting nut 14 to the element holder protrusion 13, mounting work is difficult, for example, two persons which pressurize the element holder protrusion 13 and the operator who tighten the mounting nut 14 are needed. did.

Here, an object of the present invention is to provide an amplifier case for an automobile antenna that can minimize the influence of noise from the outside and simplify the mounting work.

In order to solve the above problems and achieve the object, the amplifier case for an automobile antenna is configured as follows.

1. An amplifier case for an automotive antenna mounted inside a vehicle body panel, comprising: a case body accommodating an amplifying circuit board electrically connected to an antenna element mounted outside the vehicle body panel and a coupling member used for coupling with the antenna element; The case body is covered from the opposite side of the vehicle body panel, and at least one of the case lid body and the case body and the case lid body having an opening formed at a position corresponding to the coupling member can be reciprocated in a predetermined direction. And an opening / closing lid which opens and closes the opening portion by a plate body and moves only inside the outer periphery of the case lid body, wherein the case body, the case lid body, and the opening / closing lid are provided. It is formed of silver conductive resin It shall be.

(2) The amplifier case for an automobile antenna according to (1), wherein the case lid includes a slide guide extending along the predetermined direction on an outer wall thereof, and the opening / closing lid is coupled to the slide guide to reciprocate along the predetermined direction. A slider which is movably movable, wherein both ends of the slide guide are provided with a drop preventing stopper of the slide, and at least one of the drop preventing stoppers is a member provided on the case body side.

(3) In the amplifier case for a car antenna according to (1) or (2) above, the case lid and the opening / closing lid, wherein the lid is coupled to the opening / closing lid at least in a fully closed position where the opening is completely closed and in a fully opened position. It is characterized by including a coupling mechanism.

(4) The amplifier case for automobile antenna described in (3) above, wherein the lid coupling mechanism has a narrow gap between the slide guide and the slider at a position corresponding to the fully closed position and the fully open position, and is wide at other positions. It is characterized by being formed.

(5) In the amplifier case for a motor vehicle antenna according to any one of (1) to (4) above, the case lid includes: an open coupling portion for engaging in the open / closed lid; and a closing for coupling in the closed state; And a cutout portion connected to the opening portion, and the closed coupling portion is formed in an area fitted by the cutout portion.

(6) In the amplifier case for automobile antenna according to any one of (1) to (5) above, an antenna base having an anti-rotation bar disposed to penetrate the vehicle body panel is provided outside the vehicle body panel of the case body, and the case body is provided. It is characterized in that the cutout portion is coupled to the rotation preventing rod.

(7) In the amplifier case for an automobile antenna according to any one of (1) to (6) above, a gland washer is provided on the body panel side of the case body for conducting to the body panel, and the gland is disposed outside the body panel of the case body. An overplate is provided at a position opposite to a tip of a washer.

1 is a perspective view illustrating a state in which an amplifier case for a vehicle antenna according to an embodiment of the present invention is mounted on a vehicle body;

2 is a perspective view showing a state in which the amplifier case for automobile antenna is mounted on a vehicle body from below;

3 is a perspective view illustrating a state in which a lid is opened as the amplifier case for a car antenna;

4 is a perspective view showing a state in which a lid is closed as the amplifier case for an automobile antenna;

5 is an exploded perspective view showing the amplifier case for a car antenna;

6 is a perspective view of a lid assembled to the amplifier case for a car antenna;

7 is a perspective view showing an antenna base arranged opposite to the amplifier case for a car antenna from below;

8 is a perspective view illustrating an assembling process of the amplifier case for a car antenna;

9 is a side view showing a modification of the amplifier case for automobile antenna;

10 is a side view showing an example of a conventional amplifier case for a car antenna.

1 is a perspective view illustrating a state in which an automotive antenna amplifier case 20 according to an embodiment of the present invention is mounted on a vehicle body panel P, and FIG. 2 is an antenna main body (a) in the automotive antenna amplifier case 20. 3 is a perspective view showing a state in which 100 is mounted, and FIG. 3 is a perspective view showing a state in which the opening and closing lid 50 is opened as the amplifier case 20 for an automobile antenna, and FIG. 4 is an amplifier case 20 for the automobile antenna. 5 is an exploded perspective view of the automotive antenna amplifier case 20, and FIG. 6 is an open / close lid assembled to the automotive antenna amplifier case 20 (). 50 is a perspective view of the antenna base 110 disposed opposite to the amplifier case 20 for automobile antenna from below.

In these figures, reference numeral P denotes a vehicle body panel, reference numeral C denotes a coaxial cable, reference numeral E denotes a power cord, and reference numeral N denotes mounting screws of the antenna element 130 (not shown). ), The nut (coupling member) and reference numeral S denote the amplifying circuit board.

As shown in FIGS. 3 to 5, the automotive antenna amplifier case 20 is configured by combining the case body 30, the case lid body 40, and the opening / closing lid 50. In addition, these case main bodies 30, the case lid 40, and the opening / closing lid 50 are all formed with electroconductive ABS resin. It is preferable that the electrical conductivity of electroconductive ABS resin is 100 [(ohm / square) m <2> or less, for example.

The case body 30 is a plate body 31, a frame-shaped side wall portion 32 provided along the outer circumferential edge of the plate body 31, and a mount attached to the plate body 31 and mounted to the vehicle panel P. The plate 33 is provided. The plate 31 is formed with an opening 34 into which the protruding hook 112 of the antenna base 110 is inserted. In addition, the cutout part 33a is formed in several places in the mounting plate 33. As shown in FIG.

In the side wall portion 32, a plurality of coupling holes 32a to which hooks 43a described later of the coupling wall portion 43 engage are formed along the circumferential direction. In addition, the side wall part 32 is provided with the rod-shaped stopper 35.

A gland washer 36 made of a metal material is attached to the upper surface of the case body 30, and is in electrical communication with the sheath of the coaxial cable C.

The case lid 40 includes a plate body 41, a frame-shaped side wall portion 42 provided along the outer circumferential edge of the plate body 41, and a frame-shaped coupling wall portion continuously provided to the side wall portion 42. 43 is provided. The plate body 41 is provided with the opening part 44 in the position corresponding to the opening part 34 mentioned above. The engaging wall portion 43 is formed such that its outer circumferential surface is fitted to the inner circumferential surface of the side wall portion 32 described above. Further, a plurality of hooks 43a are provided on the outer circumferential surface of the engaging wall portion 43 along the circumferential direction. A pair of slits (cutout portions) 44a extend in the opening portion 44, and the portions 41a in which the recess portions 48 described later are provided are easily bent.

In the side wall part 42, the linear slide guide 45 is formed along the circumferential direction. A stopper 46 is provided at one end of the slide guide 45. A cutout 45a is formed on the other end side of the slide guide 45, and the stopper 35 described above is fitted to the cutout 45a.

The opening / closing lid 50 is attached to the plate body 51 and the outer periphery of the plate body 51 and engages with the slide guide 45 described above to enable reciprocating movement along the arrow α direction in FIG. 3. A pair of guided sliders 52 is provided. The outer circumferential edge of the plate body 51 is formed to move only inside the outer circumferential edge of the case lid body 40.

The lid engaging mechanism is formed by the hook 54 of the opening / closing lid 50 described above, the recessed portion (open engagement portion) 47 and the recessed portion (close engagement portion) 48. That is, the opening / closing lid 50 is held when the opening portion 44 is completely closed or in a fully open state, and is formed to move by a relatively light force therebetween.

An amplifier circuit board S is arranged inside the amplifier case 20 for automobile antennas, and the core wire of the coaxial cable C and the power cord E are connected. The terminal of the amplifying circuit board S is connected via an element mounting screw (not shown) extending from the lower end of the antenna element 130.

The antenna body 100 includes an antenna base 110 disposed on the vehicle body panel P, an antenna bracket 120 mounted on the antenna base 110, and rotatably mounted on the antenna bracket 120. An antenna element 130 is provided. The antenna base 110 has a flat case body 111. The case main body 111 protrudes toward the vehicle body panel P side, the protruding hook 112 inserted into the opening 34 of the case main body 30 described above, and the anti-rotation bar protruding toward the vehicle body panel P side ( 113) is provided. Moreover, around the protruding hook 112, the backing plate 114 is arrange | positioned only in the part which opposes the hook of the grand washer 36. As shown in FIG.

The amplifier case 20 for automobile antennas thus constructed is assembled as follows. That is, the slider 52 of the opening / closing lid 50 is attached to the slide guide 45 of the case lid 40.

Then, positioning is performed so that the hook 43a of the case lid body 40 is engaged with the coupling hole 32a of the case body 30, and the case lid body 40 is fitted to the case body 30. At this time, the stopper 35 is fitted to the cutout 45a. In addition, the amplifying circuit board S is thereby fixed by the case body 30 and the case lid body 40.

In addition, when carrying the amplifier case 20 for automobile antennas, the opening-closing lid 50 is moved along the slide guide 45, and the hook 54 and the recess 47 of the opening-closing lid 50 are coupled. The opening 44 is kept open.

Next, a method of mounting the automotive antenna amplifier case 20 on the vehicle body panel P will be described. The antenna base 110, the bracket 120, and the antenna element 130 are positioned in the mounting hole (not shown) of the vehicle body panel P from the outside. Then, the protruding hook 112 of the antenna base 110 and the element mounting screw of the antenna element 130 are inserted into the vehicle body panel P from the mounting hole. Next, the opening 34 of the amplifier case 20 for automobile antennas is positioned from the inside of the vehicle body panel P of the mounting hole, and the protruding hook 112 and the opening 34 are engaged to temporarily fix. . Then, the nut N is inserted from the opening 44 and fastened to the element mounting screw. When the tightening operation of the nut N progresses, the front end of the grand washer 36 is bitten by the vehicle body panel P, which becomes the ground. At this time, since the back plate 114 is formed at a position corresponding to the tip of the grand washer 36, the deformation of the vehicle body panel P can be suppressed even if the tip of the grand washer 36 is strongly engaged. And the operation | movement which closes the opening part 44 by sliding the opening / closing lid 50 is complete | finished.

As described above, in the amplifier case 20 for automobile antennas, since the junction part with the antenna element 130 is arrange | positioned in the vehicle body and is further coat | covered with the conductive resin, the influence by the noise from the outside can be suppressed to the minimum. . Moreover, since the opening part 44 can be opened and closed only by sliding the opening / closing lid 50, operation after the firewood operation to the vehicle body panel P is easy. In particular, since the opening and closing lid 50 is guided using the slide guide 45, for example, a slit is formed in the case lid body 40, and the opening and closing lid 50 is compared with the case where the slit is used as the slide guide. ) Can be made relatively large, and there is an advantage that it is easy to perform the opening and closing work by the operator. In addition, since the opening part 44 can be enlarged by this, the insertion and fastening operation | work of the nut N also becomes easy. In addition, the amplifier case 20 for an automobile antenna is mounted together with other automobile parts in a relatively narrow place in the vehicle body, but the outer periphery of the plate body 51 of the opening / closing lid 50 is larger than the outer periphery of the case lid 40. Since it is formed to move only inside, it does not interfere with other automobile parts, and work efficiency can be improved.

Furthermore, since the stopper 35 is provided on the case body 30 side, which is a separate member before assembly, it is easy to attach the opening / closing lid 50 to the slide guide 45, and after assembly, the stopper 35 is attached to the stopper 35. This makes it possible to reliably regulate the movement of the opening / closing lid 50.

In addition, since the lid coupling mechanism is formed by the above-mentioned hook 54 and the recesses 47 and 48 of the opening / closing lid 50, the opening / closing lid 50 is in a completely closed state or a completely open state. It is made to hold | maintain, and it is formed so that it may move by comparatively light force in the range between them.

Therefore, when conveying after assembly, since the claw 54 and the recessed part 47 couple | engage in the state which opened and closed the lid 50, there is no possibility that the opening-and-closing lid 50 may be inadvertently moved, and it will remain as it is. It can carry in a state or start a mounting operation. On the other hand, in the state which closed the opening-closing lid 50, the hook 54 and the recessed part 48 of the opening-closing lid 50 are couple | bonded, and after attaching to the vehicle body panel P of the amplifier case 20 for automobile antennas, The opening / closing lid 50 is not opened by vibration or the like, and dust mixing into the case can be prevented, and noise reduction performance by the conductive resin material can be maintained.

In addition, the coupling of the hook 54 and the recess 47 in the open / close lid 50 state and the coupling of the hook 54 and the recess 48 in the closed state are all appropriate to the operator. It can be easily released by deforming any of the case lid 40 and the opening / closing lid 50. More specifically, the hook 54 and the concave portion 47 are lightly coupled, and the engagement and disengagement can be released by sliding the opening / closing lid 50 with one finger of the operator. In contrast, the engagement of the hook 54 and the recess 48 is released by bending the portion 41a with one finger and sliding the opening / closing lid 50 with the other finger. For this reason, closing the opening / closing lid 50 at the time of assembling is simply closed. However, when the assembly is closed and the opening / closing lid 50 is closed, two fingers must be used to release the five openings. It is possible to prevent the occurrence of noise due to intrusion of dust or intrusion of electromagnetic waves.

In addition, since the case main body 30, the case lid 40, and the opening / closing lid 50 are all formed of a resin material, it is easy to produce a free shape, and the shape of the various antenna elements 130 and the type of automobile Easy to manufacture products according to. In particular, since the metal member used for the amplifier case 20 for automobile antennas can be suppressed to a minimum, compared with the case where it is formed from a metal material, the weight becomes about half and weight reduction can be aimed at.

On the other hand, when performing the assembly, the anti-rotation rod 113 is provided, and the anti-rotation rod 113 is coupled to the cutout portion 33a of the mounting plate 33, so that the amplifier case 20 for the automobile antenna is mounted. When mounting and fastening with the nut N, the automobile antenna amplifier case 20 can be prevented from rotating, and mounting can be performed easily.

In addition, as described above, when the grand washer 36 is snapped onto the vehicle body panel P, if the grand washer is shifted from the back plate 114, the function of the back plate 114 cannot be exhibited. In order to prevent this, it is also conceivable to form the topping plate in an annular shape, but in this case, the topping plate itself tends to be deformed, so that the deformation of the vehicle body panel P cannot be prevented. Therefore, in order to oppose the tip of the grand washer 36 exactly to the backing plate 114, the function of anti-rotation becomes important.

In addition, the anti-rotation rod 113 is generally installed as the anti-rotation portion of the antenna base 110 with respect to the vehicle body panel P, and the length is prevented until it engages with the cutout portion 33a of the mounting plate 33. Since it is good to just extend, rotation prevention function can be exhibited without making a special design change or adding a member.

FIG. 8 is a side view showing a modification of the amplifier case 20 for automobile antenna described above, and FIG. 9 is an explanatory diagram showing the principle of this modification. In addition, in these drawings, the same code | symbol is attached | subjected to the same functional part as FIGS. 1-7, and the detailed description is abbreviate | omitted.

That is, although the opening-closing lid 50 mentioned above is being fixed by engagement of the hook 54 and the recessed parts 47 and 48 in the position of the both ends of the slide guide 45, the lid coupling mechanism is not limited to this. That is, by providing the inclined surface 49 in the slide guide 45, the clearance gap between the slider 52 and the slide guide 45 may be changed, and it may be set as a lid engagement mechanism using friction force.

Specifically, as shown in FIG. 9, at the both end positions (completely open position and fully closed position) of the slide guide 45, the gap between the slider 52 and the slide guide 45 is narrowed to allow the slide to be narrowed. In the intermediate position of the guide 45, the inclined surface 49 which makes the clearance gap between the slider 52 and the slide guide 45 wide is set.

By forming the slide guide 45 in this way, the opening / closing lid 50 is held in a fully closed state or a fully open state, and functions to move by relatively light force in the range therebetween. Moreover, you may use together with the lid | coupling mechanism by which the hook 54 and the recessed parts 47 and 48 are combined.

In addition, this invention is not limited to the said Example, Of course, various deformation | transformation is possible in the range which does not deviate from the summary of this invention.

According to the present invention, it is possible to minimize the influence of noise from the outside and to simplify the mounting work.

Claims (7)

In the amplifier case for an automotive antenna mounted inside the body panel, A case body accommodating an amplifying circuit board electrically connected to an antenna element mounted outside the vehicle body panel and a coupling member used for coupling with the antenna element; A case lid body which covers the case body from the opposite side of the vehicle body panel and has an opening formed at a position corresponding to the coupling member; At least one of the case body and the case lid body is mounted so as to be reciprocated along a predetermined direction, and the opening and closing are opened and closed by the plate body, and the outer periphery of the plate body is moved only inside the outer periphery of the case lid body. Equipped with an opening and closing lid, The case body, the case lid body, the opening and closing lid is formed of a conductive resin, characterized in that Amplifier case for car antenna. The method of claim 1, The case lid has a slide guide extending along the predetermined direction on its outer wall, The opening and closing lid is provided with a slider coupled to the slide guide to move reciprocally along the predetermined direction, Both ends of the slide guide are provided with a stopper for preventing the dropping of the slide, and at least one of these dropout stoppers is a member provided on the case main body side. Amplifier case for car antenna. The method of claim 1, The case lid and the opening / closing lid are provided with a lid engaging mechanism for engaging the opening / closing lid in at least the fully closed position at which the opening is completely closed and at the fully opened position. Amplifier case for car antenna. The method of claim 3, wherein The lid coupling mechanism is characterized in that the gap between the slide guide and the slider is narrow at a position corresponding to the fully closed position and the fully open position and is wide at other positions. Amplifier case for car antenna. The method according to any one of claims 1 to 4, The case lid body, and the open coupling portion for coupling in the open and closed lid state, A closing coupling part coupled to the opening / closing lid in a closed state; A cutout connected to the opening, The closed coupling portion is formed in the region fitted by the incision Amplifier case for car antenna. The method according to any one of claims 1 to 4, An antenna base having an anti-rotation bar disposed to penetrate the vehicle body panel is installed outside the vehicle body panel of the case body. The case body is provided with a cutout portion is coupled to the anti-rotation rod Amplifier case for car antenna. The method according to any one of claims 1 to 4, A gland washer is provided on the body panel side of the case body for conducting to the body panel. An exterior plate is provided at a position opposite to the distal end of the grand washer on the outer side of the body panel of the case body. Amplifier case for car antenna.

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