CN104752814A - Antenna device - Google Patents
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- CN104752814A CN104752814A CN201510121116.5A CN201510121116A CN104752814A CN 104752814 A CN104752814 A CN 104752814A CN 201510121116 A CN201510121116 A CN 201510121116A CN 104752814 A CN104752814 A CN 104752814A
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Abstract
The invention provides an antenna device. The device is that an outside circumferential wall part and an inside circumferential wall part are formed at the lower part of a shark fin shaped antenna cover (10); the lower end surface of the inner side circumferential wall part is melted on the upper surface of an insulating base (20) of an antenna base (11) arranged on the lower surface of the antenna cover; an antenna assembly can be stored into the antenna cover (10) which is of a waterproof structure; the antenna assembly comprises a vibrator bracket (12) which is vertically arranged at the antenna base (11), an umbrella shaped vibrator (13) of which the rear part is fixed to the upper part of the vibrator bracket (12) by the manner of arranging above the insulating base (20), an amplifier base plate (16) for increasing a receiving signal range of the umbrella shaped vibrator, and a coil (14) which enables the umbrella vibrator (13) to resonate at the specified frequency. According to the device, the antenna base is designed to be a strength part.
Description
The application is the divisional application of following patent application:
Application number: 201280025058.0;
International filing date: on January 30th, 2012;
Enter the National Phase in China date: on November 22nd, 2013
Denomination of invention: antenna assembly
Technical field
The present invention relates to a kind of small-sized low profile type antenna assembly be equipped on automobile.
Background technology
In the past, known antenna assembly had the antenna device mounted on vehicle such as possessing radome so only to have the antenna assembly of restricted clearance.Figure 41 to Figure 43 is the structure representing this antenna assembly 100 in the past.But Figure 41 is the end view of the structure of the antenna assembly 100 represented in the past, Figure 42 is the end view of the internal structure of the antenna assembly 100 represented in the past, and Figure 43 is the decomposition assembling figure of the antenna assembly 100 represented in the past.
Antenna assembly 100 in the past shown in these figure is the antenna assemblies being installed on roof, and when being installed on vehicle, this antenna assembly is about 66mm from the height that vehicle is outstanding, and width is about 63mm, and length is about 153mm.Antenna assembly 100 is low back type, can receive AM broadcast and FM broadcast.The shape of this antenna assembly 100 is that more forward end is gone thinner streamlined.And the heelpiece of softness of rubber system or elasticity system is embedded with at the lower surface of antenna assembly 100, vehicle can be installed on watertight.
Antenna assembly 100 in the past comprises: resin-made radome 110, the bottom setting-in of this radome 110 metal antenna base 120, be vertically installed on antenna base 120 antenna substrate 130 and be installed on the amplifier substrate 134 of antenna base 120 abreast, section shape is formed as chevron and the top 131 configured in the mode striding across antenna substrate 130 and the gps antenna 132 be installed on antenna base 120.Radome 110 is the synthetic resin system of electric wave-transparent, and goes the housing department 110a of thinner fairshaped outer shape to form by more forward end.In radome 110, be formed with the space at the top 131 on the antenna substrate 130 can received and erect and arrange and the top being configured at antenna substrate 130, and laterally receive the space of amplifier substrate 134.Metal antenna base 120 is embedded with at the lower surface of radome 110.And antenna substrate 130 is erect be fixed on antenna base 120 with being arranged, and amplifier substrate 134 and antenna base 120 are fixed on the front of antenna substrate 130 substantially in parallel.Antenna pattern is formed on the top of antenna substrate 130.In addition, the top in radome 110 is built-in with top 131.And, by radome 110 is flush-mounted in antenna base 120, the top 131 being built in radome 110 is configured, situation about being connected with becoming the connection metal part 136 on the top being installed on antenna substrate 130 and the inner surface electrical resistance at top 131 in the mode on the top striding across antenna substrate 130.Due to connection metal part 136 be formed at antenna substrate 130 antenna pattern electrical resistance be connected, therefore, become situation about being connected with antenna pattern at top 131 via connection metal part 136.Be formed as thus: form antenna oscillator by antenna pattern and top 131, antenna substrate 130, top 131 and amplifier substrate 134 are incorporated in the space in radome 110.
Antenna substrate 130 is provided with coil 135, and this coil 135 resonates near FM wave band for making the antenna oscillator consisted of antenna pattern and top 131.One end of coil 135 is connected to antenna pattern, and the other end of coil 135 is connected to the one end of the directional diagram be formed on antenna substrate 130, and the other end of this directional diagram is connected with one end of connecting line 133.The other end of connecting line 133 is connected to the input part of the AM/FM amplifier being arranged on amplifier substrate 134, the AM/FM Received signal strength that the antenna oscillator consisted of receives is input to AM/FM amplifier carries out amplification antenna pattern and top 131.In addition, the bolt part 121 for being installed on by antenna assembly 100 on vehicle is formed with highlightedly from the lower surface of antenna base 120.In addition, the cable 122 for being imported in vehicle from antenna assembly 100 by Received signal strength is derived by the lower surface from antenna base 120.This cable 122 comprises derives and cable for conducting the AM Received signal strength after by the AM/FM amplifier amplification be arranged on amplifier substrate 134 and FM Received signal strength from amplifier substrate 134, and utilizes clip 145 to tie up.In this case, be formed at roof for bolt part 121 and the through hole of cable 122, bolt part 121 and cable 122 run through this some holes, thus antenna assembly 100 is placed in roof.And, by vehicle by fastening nuts in outstanding bolt part 121, antenna assembly 100 is fixed on the top of vehicle.In addition, to the power supply that the amplifier substrate 134 be accommodated in radome 110 is powered, supplied to amplifier substrate 134 in car by cable 122.
The assembling of antenna assembly 100 is in the past described with reference to the decomposition assembling figure shown in Figure 43.Antenna assembly 100 in the past, to be fixed on the top in radome 110 by top 131 by 2 screws 140.Connection metal part 136 is embedded with in the upper end of antenna substrate 130.Connection metal part 136 is installed on the top of antenna substrate 130 by the mode of retain antenna substrate 130.In addition, antenna substrate 130 is installed by welding with coil 135.This antenna substrate 130 is erect by 2 screws 141 be fixed on antenna base 120 with being arranged.In addition, amplifier substrate 134 is configured at the front of antenna substrate 130, and is fixed in antenna base 120 in an essentially parallel fashion by 3 screws 142.To be derived by the cable 122 of the AM Received signal strength of amplification and output FM Received signal strength from amplifier substrate 134, the front end of cable 122 is provided with terminal 143, and terminal 143 is fixed on the back side of amplifier substrate 134.In addition, by one end of thread connecting line 133 is connected to antenna substrate 130, the other end of connecting line 133 is connected to amplifier substrate 134, thus, the output being located at the coil 135 of amplifier substrate 130 is connected with the input of the AM/FM amplifier being located at amplifier substrate 134, and by the antenna oscillator that antenna pattern and top are formed, the AM/FM Received signal strength of reception is inputed to the AM/FM amplifier of amplifier substrate 134.Clip 145 is flush-mounted in the root of cable 122, to tie up the cable 122 of being drawn by antenna base 120 fairlead.
In the below of amplifier substrate 134, be configured with hook 144 and be flush-mounted in antenna base 120.The engaging foot of paired lengthening is extended with from the two sides of hook 144.When antenna assembly 100 has been installed on vehicle, this engaging foot has engaged with the edge of the installing hole being formed at vehicle, plays effect antenna assembly 100 being temporarily fixed on car body.Thus, when be not keep antenna assembly 100 outward from car body but in car, nut 147 be threadedly connected to bolt part 121, can be threaded in the mode making antenna assembly 100 need not extract from installing hole.
The lower surface of antenna base 120 is embedded with heelpiece 124.At the circumference of heelpiece 124, be formed and amount to 5 hole portions that can insert for screw head, inserted 5 screws 146 from below in described hole portion, screw 146 is inserted through the embedded hole of the circumference being formed in antenna base 120, and screw thread is installed on the periphery of the lower surface of radome 110.Thereby, it is possible to assemble antenna assembly 100.When bolt part 121 being aimed at the installing hole being formed at vehicle and installing the antenna assembly 100 assembled, as mentioned above, antenna assembly 100 is temporarily fixed on installing hole by hook 144.In this condition, by nut 147 is fixed to bolt part 121 from car internal thread, antenna assembly 100 can be installed on car body thus.
The structure of the radome 110 of antenna assembly 100 is in the past as shown in Figure 44 and Figure 45.But Figure 44 is the end view of the structure representing radome 110 with profile, and Figure 45 is the upward view of the structure representing radome 110.
As shown in these figures, radome 110 adopts the synthetic resin with electric wave-transparent to make, and in more going thinner fairshaped outer shape toward front end.In radome 110, be formed with the space at the top 131 on the antenna substrate 130 can received and erect and arrange and the top being configured at antenna substrate 130 and laterally can receive the space of amplifier substrate 134.In addition, in order to screw thread fixes 5 screws, lower surface be formed amount to 5 screwed hole 110c, be namely formed in front portion 1, respectively to form 1 and respectively form 1 in the both sides at rear portion in the both sides of central portion.In addition, in order to form screwed hole 110c, be also formed with 5 the boss 110b bloated around screwed hole 110c.In addition, the top in radome 110 is also formed for 2 boss 110e by 2 screw 140 fixed top 131.
In addition, as shown in Figure 42, Figure 43, the top 131 of antenna assembly 100 is in the past processed by metallic plate and is formed, and has the top of the curved surface being formed as declining toward the front and slowly, is formed with the first sidepiece of tilting to both sides from top and the second sidepiece.Respectively be formed with three openings at the first sidepiece and the second sidepiece, each sidepiece is formed by 4 sheets.The paired sheet of the substantially central portion in described becomes the contact chip being connected to connection metal part 136.In order to not with to bloat to the inside and the boss 110b that formed contacts, contact chip is formed by bending from the substantially vertical mode in midway to become.In addition, be formed with 2 pars, place at the top at top 131, be formed with screwed hole respectively in par.Insert screw 140 respectively at this screwed hole, be fixed on the boss 110e of the inner side at the top being formed at radome 110 by screw thread, top 131 is installed in radome 110.
Next, the structure of the antenna base 120 of antenna assembly 100 is in the past as shown in Figure 46 and Figure 47.But Figure 46 is the vertical view of the structure representing antenna base 120, Figure 47 is the end view of the structure representing antenna base 120.
Antenna base 120 shown in these figure adopts metal to make, and its front portion has the main part 120a being roughly the flat board formation of rectangle attenuated in frustum, at the circumference of this main part 120a, is formed with 5 embedded hole 120f altogether.By the screw 146 running through this embedded hole 120f from below being respectively screwed on respectively the screwed hole 110c of the lower surface being formed in radome 110, thus antenna base 120 is flush-mounted in radome 110.In the front portion attenuated in frustum of main part 120a, be formed with 3 boss 120e, upload at this boss 120e and put amplifier substrate 134, and make the screw 142 running through amplifier substrate 134 be screwed on boss 120e respectively, amplifier substrate 134 can be fixed on antenna base 120 thus.
In addition, in substantially central portion and the rear portion side of main part 120a, be formed with 2 threaded portion 120d along horizontal direction.By the screw 141 of the installing hole by running through antenna substrate 130 respectively screw thread be fixed on this threaded portion 120d, antenna substrate 130 can be installed on antenna base 120 to erect the mode arranged thus.At main part 120a from central authorities and slightly by rear portion side, be formed with the rectangular box-like gps antenna installation portion 120b of band rectangular recess, be formed with screwed hole 120c at four angles of gps antenna installation portion 120b.Being fixed on this screwed hole 120c by 4 screw threads of the installing hole by running through gps antenna 132, gps antenna 132 can being installed on gps antenna installation portion 120b.Rectangular cable lead-out aperture 120h is formed at the central portion of main part 120a.From this cable lead-out aperture 120h, can will be connected to the cable 122 of amplifier substrate 134 and be connected to the cable extraction of gps antenna 132.
In addition, at the central portion of main body 120a and slightly side close to the top, be formed with 4 the first rectangular opening 120g and 2 the second rectangular opening 120i.Insert 4 chimeric foot 144b of hook 144 respectively at the first rectangular opening 120g, and its front end engages with the back side of antenna base 120, hook 144 can be installed on antenna base 120 thus.2 engaging foot 144c of hook 144 insert at the second rectangular opening 120i, and give prominence to along bolt part 121 from the lower surface of antenna base 120.The back side of main body 120a is formed with bolt part 121 highlightedly, and is provided with the clip 145 for bundling the cable 122 of drawing from cable lead-out aperture 120h.
Next, the structure of the heelpiece 124 of antenna assembly 100 is in the past as shown in Figure 48 and Figure 49.But Figure 48 is the vertical view of the structure representing heelpiece 124, Figure 49 is the end view of the structure representing heelpiece 124.
Heelpiece 124 shown in these figure adopts rubber to make or elastomer is made, heelpiece 124 has main part 124a, this main part 124a removes tapered curved surface towards front portion and rear end is the flat board elongated ellipse of linearity being cut into half is formed by having, on the surface of main part 124a, be formed with the surrounding wall portion 124b of the shape of the outer shape along antenna base 120.At the surface of heelpiece 124 mounting antenna base 120, setting-in antenna base 120 in surrounding wall portion 124b, is fixed on antenna base 120 by heelpiece 124 thus.In addition, the inner side along surrounding wall portion 124b is formed with 5 holes portion 124d altogether, inserts the head inserting the screw 146 of the embedded hole 120f at antenna base 120 certainly at this hole portion 124d.The central authorities of main body 124a are formed with oval perforate 124c to anterior, to make the bolt part 121 of the lower surface being arranged at antenna base 120, cable 122 and clip 145 give prominence to from this perforate 124c.
Prior art document
Patent documentation 1: Japanese Unexamined Patent Publication 2010-21856 publication
Summary of the invention
< invents the problem > that will solve
In antenna assembly 100 in the past, the functional part receiving electric wave for protection does not affect by rainwater, dust etc., by these receiving function member storages in radome 110, and with screw 146, antenna base 120 is fixed on radome 110.Further, in order to prevent rainwater etc. from immersing the inside of radome 110 from the gap of radome 110 and antenna base 120, the surrounding wall portion 110d with waterproof rib function is provided with in the bottom of radome 110.Between this surrounding wall portion 110d and antenna base 120, sandwich heelpiece 124 and formed watertight structure, thus the functional part that protection is inner.Antenna base 120 is while the strength member as functional part and maintenance radome 110, also have the effect of the grounding electrode of amplifier substrate 134 concurrently, the earth connection of amplifier substrate 134, is connected to car body via the bolt part 121 of antenna base 120 and nut 147 electrical resistance.
The sensitivity of known antenna assembly 100 in the past by top 131 with and the ground that is connected of this top 131 electrical resistance in opposite directions between interval determine, interval is larger, and the area at top 131 is larger, and sensitivity is more stable.Thus, for guaranteeing receptivity, need top 131 to be configured at high position, or increase width and expand receiving area.But, in order to utilize screw 146 that antenna base 120 is fixed on radome 110, be formed with multiple boss 110b for arranging screwed hole 110c in the inner side of radome 110.Because this boss 110b is formed in the mode bloated to the inside, and in order to avoid the interference at boss 110b and top 131, therefore the width at top 131 is restricted.Therefore, the sidepiece at top 131 is respectively formed with 3 openings, and the width towards the sidepiece at the top 131 of the position of boss 110b is formed narrow.In addition, according to the statute of limitations, the exterior protrusions of automobile should at below 70mm, and after antenna assembly is miniaturized, for making the interval at top 131 and ground plane remain on more than fixed value, the part at the top 131 of height step-down is cut.For this reason, the shape that there is top 131 becomes complicated problem.
In addition, the shape of heelpiece 124 for walk around the boss 110b of radome 110, shape shown in Figure 48, in order to the shape keeping waterproof construction to be formed as complicated.In addition, inner at radome 110, due to the strengthening rib strip etc. of boss 110b, surrounding wall portion 110d and these parts, be formed as complicated structure.For improving receiving sensitivity, need the inner space expanding collecting top 131, so the wall thickness of radome 110 is designed thin, but the position of the shape of above-mentioned complexity, its wall thickness but cannot be thinning.Therefore, when radome 110 is shaping, there is more what is called and large contraction distortion, appearance distortion easily occur in the part of the different labyrinth of wall thickness, produces the problems such as shrink mark.
In addition, for improving receiving sensitivity, the maximum height of antenna assembly 100 adopts limiting altitude, and is improve sensitivity further, is effective by the way of the lower thickness with top 131 antenna base 120 in opposite directions.But, antenna base 120 for doubling as the strength member of grounding electrode, and for prevent to radome 110 inside immersion, need clamp heelpiece 124 with very large axle power between this antenna base 120 and radome 110, exist can not thinning and maximization problem.
When antenna base 120 becomes large-scale, for preventing the corrosion of rainwater etc., the heelpiece 124 that the part being exposed to the extraneous gas of antenna base 120 covers also is become large-scale.Therefore, thickness of slab is thinning and roof that the is vehicle that rigidity is low is subject to large-scale heelpiece 124 presses, and there is the problem easily deforming at roof because of this pressing force, damage appearance design or cause water-proof function to reduce.
Therefore, the object of the present invention is to provide a kind of antenna assembly that can solve the problem.
The method > of < for dealing with problems
In order to reach above-mentioned purpose, antenna assembly of the present invention comprises: the radome of insulating properties, its lower surface opening and be formed with accommodation space in inside; Antenna base, it comprises the insulator foot embedded for this radome, and conductive seat that is less than this insulator foot and that be fixed on described insulator foot; The oscillator support of insulating properties, its setting is arranged on this antenna base; Umbrella shape oscillator, it is fixed on the top of described oscillator support in the mode of the top its rear portion being positioned at described insulator foot; Amplifier substrate, it is provided with the amplifier of the Received signal strength amplification making this umbrella shape oscillator, to be configured on described conductive seat and to be fixed on described antenna base; And
Coil, between its output being inserted in described umbrella shape oscillator and the input of described amplifier, resonance is produced in the frequency of regulation to make described umbrella shape oscillator, the topmost of this antenna assembly is characterised in that, when described radome is embedded in described insulator foot, the lower surface of described radome is fixed on described insulator foot by welding or bonding mode and is formed waterproof construction.
The effect > of < invention
In antenna assembly of the present invention, be formed as waterproof construction by being fixed on insulator foot with welding or bonding mode by the lower surface of radome.Therefore, can without the need to the large-scale heelpiece for the formation of waterproof construction, antenna base is also without the need to clamping heelpiece, so insulator foot can be adopted to be formed without the need to antenna base is designed to metal strength member by very large axle power.In addition, when being installed on after vehicle by antenna assembly, can not distortion be produced at roof, the situation damaging appearance design, water-proof function reduces can be prevented.In addition, can without the need to arranging at radome for the boss for antenna base is formed with the screwed hole that screw thread is fixed.Thus, due to radome can be made to have wall thickness thin roughly uniformly, so be difficult to contraction distortion when producing shaping, appearance can be prevented to be out of shape, to produce the situation of shrink mark.In addition, owing to not being provided with boss at radome, so simplifying the structure of umbrella shape oscillator can be made.
In addition, because radome is formed by insulator foot and conductive seat, therefore, it is possible to make the ground plane of the umbrella shape oscillator on insulator foot be car body and make the height of essence uprise, the sensitivity of Received signal strength can be improved.
Accompanying drawing explanation
Fig. 1 is the stereogram of the structure of the antenna assembly representing the embodiment of the present invention.
Fig. 2 is the end view of the structure of the antenna assembly representing the embodiment of the present invention.
Fig. 3 is the vertical view of the structure of the antenna assembly representing the embodiment of the present invention.
Fig. 4 is the front view of the structure of the antenna assembly representing the embodiment of the present invention.
Fig. 5 is the end view of the internal structure representing the antenna assembly of the embodiment of the present invention with A-A profile.
Fig. 6 is the stereogram of the internal structure representing the antenna assembly of the embodiment of the present invention with half-sectional view.
Fig. 7 is the schematic diagram of the state of the antenna module flush antenna cover representing antenna assembly of the present invention.
Fig. 8 is the stereogram of the structure of the antenna module representing antenna assembly of the present invention.
Fig. 9 is the vertical view of the structure of the antenna module representing antenna assembly of the present invention.
Figure 10 is the end view of the structure of the antenna module representing antenna assembly of the present invention.
Figure 11 is the front view of the structure of the antenna module representing antenna assembly of the present invention.
Figure 12 is the end view of the structure of the radome representing antenna assembly of the present invention.
Figure 13 is the upward view of the structure of the radome representing antenna assembly of the present invention.
Figure 14 is the end view of the structure representing the radome of antenna assembly of the present invention with B-B profile.
Figure 15 is the front view of the structure representing the radome of antenna assembly of the present invention with C-C profile.
Figure 16 is the vertical view of the structure of the insulator foot representing antenna assembly of the present invention.
Figure 17 is the end view of the structure of the insulator foot representing antenna assembly of the present invention.
Figure 18 is the upward view of the structure of the insulator foot representing antenna assembly of the present invention.
Figure 19 is the vertical view of the structure of the conductive seat representing antenna assembly of the present invention.
Figure 20 is the end view of the structure of the conductive seat representing antenna assembly of the present invention.
Figure 21 is the upward view of the structure of the conductive seat representing antenna assembly of the present invention.
Figure 22 is the stereogram of the package assembly of the antenna base representing antenna assembly of the present invention.
Figure 23 is the stereogram of the structure of the antenna base representing antenna assembly of the present invention.
Figure 24 is the upward view of the structure of the antenna base representing antenna assembly of the present invention.
Figure 25 is the front view of the structure of the antenna base representing antenna assembly of the present invention.
Figure 26 is the front view of the structure representing the antenna base of antenna assembly of the present invention with D-D profile.
Figure 27 is the stereogram of the structure of the oscillator support representing antenna assembly of the present invention.
Figure 28 is the end view of the structure of the oscillator support representing antenna assembly of the present invention.
Figure 29 is the vertical view of the structure of the oscillator support representing antenna assembly of the present invention.
Figure 30 is the front view of the structure of the oscillator support representing antenna assembly of the present invention.
Figure 31 is the end view of the structure representing the oscillator support of antenna assembly of the present invention with E-E profile.
Figure 32 is the vertical view of the structure of the umbrella shape oscillator representing antenna assembly of the present invention.
Figure 33 represents that the umbrella shape oscillator by antenna assembly of the present invention is assembled into the stereogram of the state of oscillator support.
Figure 34 represents end view umbrella shape oscillator being assembled in the state of oscillator support by antenna assembly of the present invention.
With profile, Figure 35 represents that the umbrella shape oscillator by antenna assembly of the present invention is assembled in the front view of the partial structurtes of oscillator support.
Figure 36 is the stereogram of the structure of the antenna substrate representing antenna assembly of the present invention.
Figure 37 is stereogram and the vertical view of the loop construction representing antenna assembly of the present invention.
Figure 38 is the stereogram of the structure of the power supply terminal representing antenna assembly of the present invention.
Figure 39 is the stereogram of the assembling representing the umbrella shape oscillator of antenna assembly of the present invention, oscillator support, loop pads, gap shield.
Figure 40 is the curve chart of the frequency characteristic of the average gain representing antenna assembly of the present invention and antenna assembly in the past.
Figure 41 is the end view of the structure of the antenna assembly represented in the past.
Figure 42 is the end view of the internal structure of the antenna assembly represented in the past.
Figure 43 is the decomposition assembling figure of the structure of the antenna assembly represented in the past.
Figure 44 is the end view of the structure representing the radome of antenna assembly in the past with profile.
Figure 45 is the upward view of the structure of the radome of the antenna assembly represented in the past.
Figure 46 is the vertical view of the structure of the radome of the antenna assembly represented in the past.
Figure 47 is the end view of the structure of the radome of the antenna assembly represented in the past.
Figure 48 is the vertical view of the structure of the heelpiece of the antenna assembly represented in the past.
Figure 49 is the end view of the structure of the heelpiece of the antenna assembly represented in the past.
Description of reference numerals
1, antenna assembly; 2, antenna module; 10, radome; 10a, housing department; 10b, outer perimeter wall portion; 10c, inner side surrounding wall portion; 11, antenna base; 12, oscillator support; 12a, frame portion; 12b, foot; 12c, holding part; 12d, holding part; 12e, engagement pawl; Sheet clasped by 12f, coil; 12g, derivation groove; 12h, engaging protrusion; 12i, terminal clasp sheet; 12j, through hole; 12k, terminal clasp portion; 13, umbrella shape oscillator; 13a, top; 13b, rake; 13c, rake; 13d, opening; 13e, back part; 13f, folding portion; 13g, terminal; 14, coil; 14a, coil main body; 14b, wire; 15, power supply terminal; 15a, planar portion; 15b, bending part; 15c, leading-out portion; 15d, terminal plate; 16, amplifier substrate; 16a, base main body; 16b, through hole; 16c, connecting hole; 17, annular seal ring; 18, gap shield; 18a, groove portion; 18b, cutting portion, 20, insulator foot; 20a main part; 20b, flange part; 20c, surrounding wall portion; 20d, engaging boss portion; 20e, snap-latch piece; 20f, central portion; 20g, engaging protrusion; 20h, endless groove; 20i, compressing tablet; 20j, incorporating section; 21, conductive seat; 21a, bolt part; 21b, main part; 21d, connecting hole; 21e, through hole; 21f, stop hole; 21g, the first boss; 21h, the second boss; 21i, opening; 21j, erected piece; 100, antenna assembly; 110, radome; 110a, housing department; 11Ob, boss; 110c, screwed hole; 110d, surrounding wall portion; 110e, boss; 120, antenna base; 120a, main part; 120b, astronomical cycle portion; 120c, screwed hole; 120d, threaded portion; 120e, boss; 120f, embedded hole; 120g, the first rectangular opening; 120h, cable lead-out aperture; 120i, the second rectangular opening; 121, bolt part; 122, cable; 124, heelpiece; 124a, main part; 124b, surrounding wall portion; 124c, perforate; 124d, hole portion; 13O, antenna substrate; 131, top; 132, antenna; 133, connecting line; 134, amplifier substrate; 135, coil; 136, connection metal part; 140, screw; 141, screw; 142, screw; 143, terminal; 144, link up with; 144b, chimeric foot; 144c, engaging foot; 145, clip; 146, screw; 147, nut;
Embodiment
Fig. 1 to Fig. 4 represents the structure of the antenna assembly 1 of embodiments of the invention.But, Fig. 1 is the stereogram of the structure representing antenna assembly 1 of the present invention, Fig. 2 is the end view of the structure representing antenna assembly 1 of the present invention, and Fig. 3 is the vertical view of the structure representing antenna assembly 1 of the present invention, and Fig. 4 is the front view of the structure representing antenna assembly 1 of the present invention.
As shown in these figures, the antenna assembly 1 of embodiments of the invention for being installed on the antenna assembly of vehicle roof, and has the radome 10 being fitted together to antenna base 11 at lower surface.Radome 10 adopts the synthetic resin with electric wave-transparent to make, and is formed as fairshaped outer shape (being called " shark fin-shaped "), has and more goes to toward front end narrower and side to be formed as the curved surface reduced to the inside.Be fitted together in the radome 10 of antenna base 11 at lower surface, be accommodated with antenna module described later.From the lower surface of antenna base 11, be formed with the bolt part 21a for antenna assembly 1 being installed on car body highlightedly.This antenna assembly 1 is set to be about 151mm, wide about 63mm, small-sized, the low profile type antenna assembly of high about 66mm, can receive AM broadcast and FM broadcast.
Fig. 5 and Fig. 6 represents the internal structure of the antenna assembly 1 of embodiments of the invention.But Fig. 5 is the end view of the internal structure representing antenna assembly 1 of the present invention with A-A profile, Fig. 6 is the stereogram of the internal structure representing antenna assembly 1 of the present invention with half-sectional view.In addition, in figure 6, eliminate coil 14 to represent.
The antenna assembly 1 of embodiments of the invention is the antenna assembly of FM broadcast domain that can receive AM broadcast domain, 76MHz to 90MHz or 88MHz to 108MHz.Antenna assembly 1 comprises radome 10 that resin makes and is embedded in the antenna base 11 of lower surface of this radome 10, and this antenna base 11 is adopted the insulator foot 20 be made of resin and formed with metal conductive seat 21.At antenna base 11, conductive seat 21 is formed as a circle less of insulator foot 20 and the shorter shape of length, and be configured on insulator foot 20 from front side to the position after a while between side of central authorities, the rear end of conductive seat 21 is can the mode of movement a little forwards, backwards be fixed relative to insulator foot 20.Erect at rear side from the central authorities of the upper surface of antenna base 11 and arrange and the oscillator support 12 adopting the frame of the rectangle be formed from a resin to be formed is installed, and amplifier substrate 16 is substantially horizontally installed on conductive seat 21.
The bolt part 21a for antenna assembly 1 being installed on vehicle is formed highlightedly from the lower surface of the conductive seat 21 of antenna base 11.From through hole and the cable lead-out aperture be formed on rear side of it of this bolt part 21a, derive the multi-cable for exporting Received signal strength etc.Oscillator support 12 adopts the frame portion of rectangle to be formed, and is formed with the clamping part supporting umbrella shape oscillator 13 on the top in frame portion.In addition, erect the inner side of frame arranged in the front side of oscillator support 12, maintain and be connected in series in umbrella shape oscillator 13 and coil 14 for making umbrella shape oscillator 13 and FM frequency produce 1 μ H to the 3 μ H degree resonated.The guide line of deriving from the upper end of this coil 14 is connected with the terminal of umbrella shape oscillator 13, and the guide line of deriving from the lower end of this coil 14 is connected with power supply terminal 15.Power supply terminal 15 as shown in figure by bending, and top be fixed in erect be arranged on the frame of the front side of oscillator support 12 with coil 14 face in opposite directions, the terminal of lower end is connected with the input terminal of amplifier substrate 16.Thus, be formed as: by the umbrella shape oscillator 13 be connected in series with coil 14, by the amplifier being assembled in amplifier substrate 16, amplification is carried out to the AM/FM Received signal strength received.In addition, the antenna adopting umbrella shape oscillator 13 and coil 14 to be formed, carries out work at AM broadcast domain as nonresonant antenna.
As shown in Figure 5, Figure 6, in the bottom of radome 10, be formed with the double-decker comprising outer perimeter wall portion and inner side surrounding wall portion, the lower surface of inner side surrounding wall portion abuts with the upper surface of the periphery of insulator foot 20.The lower surface of the inner side surrounding wall portion of this abutting and the upper surface of insulator foot 20 are by laser welding or to smear bonding agent bonding.Thus, the inside of the radome 10 making lower surface be closed by insulator foot 20 is formed as waterproof construction.Be wound with in all sides of this insulator foot 20 and adopt the gap shield 18 being formed as rope form that rubber is made or elastomer is made.In addition, central portion is formed at the central portion of insulator foot 20, this central portion is inserted for the bolt part 21a being formed at conductive seat 21, and the annular seal 17 inner side of central portion being formed as waterproof construction is embedded in lower surface at insulator foot 20 with the annulus formed around the mode of central portion.
Fig. 7 represents the state of the antenna module 2 flush antenna cover 10 of antenna assembly 1 of the present invention.If the inner side surrounding wall portion of radome 10 to be embedded in from the state shown in Fig. 7 the insulator foot 20 of antenna base 11, then become the state shown in Fig. 5, Fig. 6.In addition, antenna module 2 comprises: be assembled in oscillator support 12, umbrella shape oscillator 13, coil 14, power supply terminal 15 and the amplifier substrate 16 on the antenna base 11 adopting insulator foot 20 and conductive seat 21 formation.
Next, Fig. 8 to Figure 11 represents the structure of the antenna module 2 of antenna assembly 1 of the present invention, but, Fig. 8 is the stereogram of the structure of the antenna module 2 representing antenna assembly 1 of the present invention, Fig. 9 is the vertical view of the structure of the antenna module 2 representing antenna assembly 1 of the present invention, Figure 10 is the end view of the structure of the antenna module 2 representing antenna assembly 1 of the present invention, and Figure 11 is the front view of the structure of the antenna module 2 representing antenna assembly 1 of the present invention.
Antenna module 2 comprises the antenna base 11 adopting insulator foot 20 and conductive seat 21 to be formed, and on antenna base 11, is assembled with oscillator support 12, umbrella shape oscillator 13, coil 14, power supply terminal 15 and amplifier substrate 16.First, the structure of the antenna base 11 adopting insulator foot 20 and conductive seat 21 to be formed is described.First, when the structure of insulator foot 20 is described, Figure 16 represents the vertical view of the structure of insulator foot 20, and Figure 17 represents the end view of the structure of insulator foot 20, and Figure 18 represents the upward view of the structure of insulator foot 20.
The products formed that insulator foot 20 shown in these figure is made for synthetic resin, and formed in the mode comprising main part 20a, this main part 20a width goes towards front side to narrow gradually and front-end and back-end are formed as the shape of arc, in the outer peripheral edges than main part 20a a little in the inner part, to give prominence to and circumferentially edge is formed with the surrounding wall portion 20c of specified altitude from upper surface.In addition, at the upper surface of main part 20a, be formed with engaging boss portion 20d in the substantial middle of front side.This engaging boss portion 20d roughly cylindrically, is formed with 3 openings in the vertical, is formed with the holding section protruding wedge-like, and has elasticity diametrically in the outside of front end.Be formed with the central portion 20f of substantially elliptical at the central portion of main part 20a, be formed with the snap-latch piece 20e of paired tabular at the rear side of central portion 20f.At the lateral surface of the front end of paired snap-latch piece 20e, be formed with the holding section of wedge-like.In addition, the posterior medial of the surrounding wall portion 20c of main part 20a is formed with the incorporating section 20j that cross sectional shape is Japan word " コ " shape, is formed with paired little engaging protrusion 20g outward in the rear end of main part 20a.In addition, at the lower surface of main part 20a, to be formed with endless groove 20h around the mode of central portion 20f.Endless groove 20h is the groove embedded for annular seal ring 17, in order to avoid the annular seal ring 17 embedded departs from, is formed with multiple compressing tablet 20i to the inside highlightedly from the upper end of endless groove 20h.
Next, Figure 19 represents the vertical view of the structure of conductive seat 21, and Figure 20 represents the end view of the structure of conductive seat 21, and Figure 21 represents the upward view of the structure of conductive seat 21.
Conductive seat 21 shown in these figure adopts metal to make, and is formed as the same shape slightly less than the inner circumferential shape of surrounding wall portion 20c, to be incorporated in the inner side of the surrounding wall portion 20c of insulator foot 20.But conductive seat 21 is formed shorter, to make rear end be placed in be formed at the rear side of the snap-latch piece 20e of insulator foot 20.At the upper surface of conductive seat 21, be formed with circular connecting hole 21d in front end, on rear side of it, be formed with 3 the second boss 21h with the both sides of substantial middle, these 3 the second boss 21h are formed with screwed hole.Second boss 21h is formed at the summit of isosceles triangle respectively, becomes for the fixing boss of the screw thread being inserted through amplifier substrate 16.
Here, Figure 36 is the stereogram of the structure representing amplifier substrate 16.As shown in the drawing, amplifier substrate 16 adopts the base main body 16a anteriorly going width to narrow gradually from rear portion to be formed, and anterior substantially central portion and the both sides at rear portion are formed with through hole 16b respectively.This through hole 16b is formed at respectively the summit of isosceles triangle, and the screw thread running through through hole 16b is fixed on 3 the second boss 21h, thus amplifier substrate 16 is fixed on conductive seat 21.In addition, the rear portion of base main body 16a is formed with connecting hole 16c, this connecting hole 16c be assembled in amplifier substrate 16 amplifier input terminal electrical resistance be connected.
Referring again to Figure 19 to Figure 21, at the two ends of the side after a while of the central authorities of the upper surface of conductive seat 21, be formed with the first paired boss 21g.And, in the substantial middle of the rear end of upper surface, be formed with the stop hole 21f of rectangle, in the both sides of stop hole 21f, be formed with the erected piece 21j of paired tabular substantially in parallel with major axis.In addition, in the side after a while of the central authorities of the lower surface of main part 21b, bolt part 21a is formed with highlightedly.Be formed with through hole 21e at bolt part 21a, be formed with opening 21i in the side of bolt part 21a.The through hole 21e of bolt part 21a can be inserted through from the cable of amplifier substrate 16 derivation from top, and the opening 21i of this cable below through hole 21e is derived.
Next, Figure 22 to Figure 26 is the structure representing the antenna base 11 be made up of insulator foot 20 and conductive seat 21.But, Figure 22 is the stereogram of the structure of the assembling representing antenna base 11, Figure 23 is the stereogram of the structure of antenna base 11 after representing assembling, Figure 24 is the upward view of the structure of antenna base 11 after representing assembling, Figure 25 is the front view of the structure of antenna base 11 after representing assembling, and Figure 26 is the front view of the structure representing the antenna base after assembling 11 with D-D profile.
As shown in figure 22, insulator foot 20 is configured with conductive seat 21, and then conductive seat 21 is placed on insulator foot 20.And, the engaging boss portion 20d of insulator foot 20 is fitted together to the connecting hole 21d inserting conductive seat 21, and the paired snap-latch piece 20e of insulator foot 20 is inserted into the stop hole 21f of conductive seat 21.Thus, be sticked in around the upper end of stop hole 21d in the holding section of the front end of engaging boss portion 20d, the holding section being simultaneously formed at the front end of snap-latch piece 20e is sticked in the upper surface of the erected piece 21j of conductive seat 21, and is fixed in the mode avoiding conductive seat 21 to depart from from insulator foot 20.The first holding section making this engaging boss portion 20d be sticked in connecting hole 21d is the holding section for locating, and the second holding section making snap-latch piece 21e be sticked in erected piece 20j is along long axis direction slidably holding section.Therefore, even if both relative lengths change because conductive seat 21 is different with the coefficient of thermal expansion of insulator foot 20, the difference of this length is also absorbed by the second holding section.Figure 23 to Figure 26 represents that conductive seat 21 is fixed on the structure of the antenna base 11 on insulator foot 20.
Herein, Figure 12 to Figure 15 represents the structure of the radome 10 of antenna assembly 1 of the present invention.But, Figure 12 is the end view of the structure of the radome 10 representing antenna assembly 1 of the present invention, Figure 13 is the upward view of the structure of the radome 10 representing antenna assembly 1 of the present invention, Figure 14 is the end view of the structure representing the radome 10 of antenna assembly 1 of the present invention with B-B profile, and Figure 15 is the front view of the structure representing the radome 10 of antenna assembly 1 of the present invention with C-C profile.
As shown in these figures, radome 10 adopts the synthetic resin with electric wave-transparent to make, and is formed as shark fin-shaped, namely more goes to toward front end narrower and side to be formed as the curved surface reduced to the inside, and the housing department 10a adopting wall thickness thin is formed.The double-deck surrounding wall portion that wall thickness is thin is formed in the bottom of radome 10.Be formed with outer perimeter wall portion 10b in outside, be formed with inner side surrounding wall portion 10c in inner side.When radome 10 flush antenna assembly 2, inner side surrounding wall portion 10c is embedded in the periphery of surrounding wall portion 20c, the upper surface of the insulator foot 20 that the synthetic resin that the periphery of this surrounding wall portion 20c is formed at antenna base 11 is made, and the lower surface of inner side surrounding wall portion 10c abuts with the upper surface of insulator foot 20.Irradiate welding at the position of this abutting by laser or smear bonding agent bonding.Thus, antenna module 2 is incorporated in the inside of the waterproof construction formed by radome 10 and insulator foot 20.
As mentioned above, because the lower surface of radome 10 is fixed on insulator foot 20 with welding or bonding mode, so at radome 10 without the need to arranging the boss for the formation of screwed hole, this screwed hole is used for being fixed by antenna base 11 by screw.Thereby, it is possible to make radome 10 be formed as the thin housing department 10a of roughly uniform wall thickness, therefore, it is possible to contraction distortion when making shaping not easily produces and prevents the shrink mark that makes appearance be out of shape.
Next, Figure 27 to Figure 31 represents the structure of the oscillator support 12 of antenna assembly 1 of the present invention.But, Figure 27 is the stereogram of the structure of the oscillator support 12 representing antenna assembly 1 of the present invention, Figure 28 is the end view of the structure of the oscillator support 12 representing antenna assembly 1 of the present invention, Figure 29 is the vertical view of the structure of the oscillator support 12 representing antenna assembly 1 of the present invention, Figure 30 is the front view of the structure of the oscillator support 12 representing antenna assembly 1 of the present invention, and Figure 31 is the front view of the structure representing the oscillator support 12 of antenna assembly 1 of the present invention with E-E profile.
Oscillator support 12 shown in these figure is formed by rectangular-shaped frame portion 12a, on the top of frame portion 12a, is formed with the first holding part 12c and the second holding part 12d that support umbrella shape oscillator 13 in mode in opposite directions.In addition, the cross sectional shape of frame portion 12a is also formed as rectangle.In the lower end of the front side of oscillator support 12, be formed with the foot 12b extended transversely, the two ends of this foot 12b are formed with through hole 12j respectively.The screw thread running through this through hole 12j is fixed on the first paired boss 21g being formed at conductive seat 21.In addition, the engagement pawl 12e of " L " shape in the lower end of the rear side of oscillator support 12, is formed highlightedly.This engagement pawl 12e be incorporated in the cross section being formed at insulator foot 20 be Japan word " コ " shape incorporating section 20j in and with the mode that can not depart from incorporating section 20j be engaged.
First holding part 12c and the second holding part 12d is roughly formed as Japan word " コ " shape, and the first holding part 12c is formed high than the second holding part 12d.The second holding part 12d with the substantial middle in the first holding part 12c face in opposite directions, be formed with the engaging protrusion 12h of wedge-like.Gap between the first holding part 12c and the second holding part 12d, is embedded with the folding portion formed along long axis direction in the inner side of umbrella shape oscillator 13.After folding portion is embedded into, this engaging protrusion 12h is sticked in the engaging window being formed in folding portion.Thereby, it is possible to support umbrella shape oscillator 13 by oscillator support 12, to make umbrella shape oscillator 13 can not depart from from the first holding part 12c and the second holding part 12d.In addition, the terminal being arranged at the lower end of umbrella shape oscillator 13 is clasped portion 12k to clasp by the terminal of " L " shape of arc.This terminal clasps the face that portion 12k is formed at the outside of the frame portion 12a of the front side of oscillator support 12.And, in the inner side of the frame portion 12a of the front side of oscillator support 12, be formed with 4 up and down altogether and clasp sheet 12f for the coil clasping coil 14.In addition, the face in the outside of the frame portion 12a in the front side of oscillator support 12, is formed with the terminal clasping power supply terminal 15 and clasps sheet 12i.
Next, Figure 32 is the upward view of the structure representing umbrella shape oscillator 13, Figure 33 represents stereogram umbrella shape oscillator 13 and coil 14 being assembled to the state of oscillator support 12, Figure 34 represents end view umbrella shape oscillator 13 being assembled into the state after oscillator support 12, and Figure 35 represents with F-F profile front view umbrella shape oscillator 13 being assembled into the state after oscillator support 12.
As shown in these figures, umbrella shape oscillator 13 has the top 13a be formed flatly, and is formed with the rake of the ridge tilted to both sides from this top 13a.In the substantial middle of rake, be only formed with opening 13d at a place, the front side of opening 13d is formed as the first rake 13b, and the rear side of peristome 13d is formed as the second rake 13c.In addition, the paired back part 13e after by the lateral margin bending of the rear end of the second rake 13c is also formed.The inclination angle being formed with the top 13a of the first rake 13b is larger than the inclination angle of the top 13a being formed with the second rake 13c.Umbrella shape oscillator 13 by being cut into the metal sheet bending of regulation shape and being formed, and is formed with the folding portion 13f extended below the mediad of top 13a.From this folding portion 13f along being laterally formed with terminal 13g, and be formed with the engaging window that can engage with the engaging protrusion 12h of oscillator support 12 at the folding portion 13f of the inner side of the second rake 13c.
In addition, in antenna assembly 1 of the present invention, boss not being set at radome 10, therefore without the need to preventing umbrella shape oscillator 13 and the interference of boss, the shape of umbrella shape oscillator 13 can being formed ground simple yet.
Figure 37 (a) is the stereogram of the structure representing coil 14, and Figure 37 (b) is the vertical view of the structure representing coil.As shown in these figures, coil 14 comprises the wire 14b being wound into columnar coil main body 14a, the wire 14b derived along wiring direction from the upper end of coil main body 14a, deriving along wiring direction from the lower end of coil main body 14a.Therefore, the interval that the gap-forming of 2 wire 14b is and the diameter of coil main body 14a is roughly equal.Coil 14 is formed as being connected in series in umbrella shape oscillator 13 and coil for making umbrella shape oscillator 13 and FM frequency produce 1 μ H to the 3 μ H degree resonated.
In addition, Figure 38 is the stereogram of the structure representing power supply terminal 15.As shown in the drawing, be formed with the planar portion 15a of rectangle in the end of power supply terminal 15, be formed with bending part 15b at its another ora terminalis.Planar portion 15a is located by bending part 15b and the terminal clasped in oscillator support 12 clasps sheet 12i, and when being clasped, the hole being formed at planar portion 15a is consistent with derivation groove 12g.Be formed extended at both sides bending leading-out portion 15c from another ora terminalis of planar portion 15a, be formed with terminal plate 15d in the front end of leading-out portion 15c.This terminal plate 15d inserted and is welded in the connecting hole 16c of amplifier substrate 16, thus being connected to the input terminal of amplifier.
As shown in figure 33, the umbrella shape oscillator 13 be configured on oscillator support 12 is moved down, its folding portion 13f is embedded in the gap between the first clamping part 12c and the second clamping part 12d.If folding portion 13f is pressed into gap, as shown in figure 35, then the engaging protrusion 12h being formed at the wedge-like of the inner side of the second clamping part 12d engages with the engaging window being formed at folding portion 13f, and umbrella shape oscillator 13 is fixed on oscillator support 12.Now, the terminal 13g being formed at folding portion 13f is clasped to be clasped in portion 12k at the terminal of oscillator support 12.Next, chimeric for the coil 14 shown in Figure 33 insertion is clasped by 4 coils the maintenance space that sheet 12f is surrounded.Thus, clasp sheet 12f by 4 coils to clasp coil 14.Wire 14b idiomorphism from the upper end of coil 14 is formed in the derivation groove 12g that terminal clasps portion 12k and is exported, and is inserted through and is clasped the hole clasping the terminal 13g of the umbrella shape oscillator 13 of portion 12k at terminal, and is connected to terminal 13g by welding.In addition, the wire 14b idiomorphism from the lower end of coil 14 is formed in the derivation groove 12g that terminal clasps between sheet 12i and is exported, and is inserted through by the hole of the power supply terminal 15 clasped at terminal retention portion 12i, and is connected to power supply terminal 15 by welding.Thus, coil 14 is configured at the approximate centre of the Width of oscillator support 12.That is, the approximate centre of the Width of umbrella shape oscillator 13 is configured at due to coil 14, therefore, it is possible to avoid the interference of umbrella shape oscillator 13 and coil 14 to greatest extent, and can when maintaining equal Received signal strength performance by the narrowed width of umbrella shape oscillator 13.Thereby, it is possible to the narrowed width on the top of radome 10 is improved appearance property.
Next, Figure 39 is the stereogram of the assembling representing the umbrella shape oscillator 13 of antenna assembly 1 of the present invention, oscillator support 12, annular seal ring 17, gap shield 18.
As shown in the drawing, conductive seat 21 is configured on insulator foot 20, and then conductive seat 21 is placed on insulator foot 20.And, the engaging boss portion 20d of insulator foot 20 is fitted together to the connecting hole 21d being inserted in conductive seat 21, the paired snap-latch piece 20e of insulator foot 20 is inserted into the stop hole 21f of conductive seat 21 simultaneously.Thus, the holding section of the front end of the engaging boss portion 20d around the upper end being embedded in connecting hole 21d is locked, and the fastener being formed at the front end of snap-latch piece 20e is engaged in the upper surface of the erected piece 21j of conductive seat 21, and be fixed in the mode making conductive seat 21 can not depart from from insulator foot 20.Now, from the bolt part 21a that the lower surface of conductive seat 21 is formed highlightedly, the central portion 20f of through insulator foot 20 and giving prominence to from the lower surface of insulator foot 20.
Next, at the lower surface of insulator foot 20, in the 20h of endless groove as of fig. 24 that chimeric for annular seal ring 17 surrounding being inserted in central portion 20f is formed.Abut at the smooth upper surface of annular seal ring 17 the compressing tablet 20i having the outer peripheral edges being formed at endless groove 20h, annular seal ring 17 is maintained in endless groove 20h.In addition, gap shield 18 is formed as rope form and both ends are formed as cutting portion 18b.Porose portion is formed in the slightly inner side of this cutting portion 18b, an engaging protrusion 20g of the rear end being formed at insulator foot 20 is inserted with in this hole portion, while being fitted together to by the flange part 20b of all sides being formed at insulator foot 20 in the groove portion 18a being inserted in gap shield 18, gap shield 18 is made to be wound in all sides of insulator foot 20.And be formed at the hole portion that winding terminates the slightly inner side of the cutting portion 18b of end, the engaging protrusion 20g for the opposing party inserts.Thereby, it is possible to gap shield 18 to be arranged on all sides of insulator foot 20.
In antenna assembly in the past, as the rigid structure formed by radome and antenna base, by forming waterproof construction with large axial force clamping heelpiece.In antenna assembly 1 of the present invention, owing to being by by radome 10 and insulator foot 20 welding or bondingly form waterproof construction, so, without the need to conductive seat 21 is formed as strength member, can be miniaturized by conductive seat 21, as long as by miniaturized for the size of conductive seat 21 to the size that can press annular seal ring 17.In addition, conductive seat 21 also plays function as the earth connection of amplifier substrate 16.
Be described antenna module 2, the structure forming each several part of antenna module 2 is described above again.For the antenna module 2 shown in Fig. 8 to Figure 11, be provided with gap shield 18 in the periphery of antenna base 11, the insulator foot 20 that this antenna base 11 adopts upper surface to assemble conductive seat 21 is formed.Antenna base 11 is erect and is fixed with oscillator support 12 with arranging, and be substantially horizontally fixed with amplifier substrate 16.On the top of oscillator support 12, umbrella shape oscillator 13 is installed, and coil 14 is held in the inner side of the frame portion 12a of oscillator support 12.The wire of the upside of coil 14 is connected to the terminal 13g of umbrella shape oscillator 13, and the wire of the downside of coil 14 is connected to one end of power supply terminal 15.The other end of power supply terminal 15 is connected to the input terminal of the amplifier of amplifier substrate 16, and the Received signal strength of the antenna formed by umbrella shape oscillator 13 and coil 14 passes through the amplifier of amplifier substrate 16 by amplification.
In antenna module 2, the first rake 13b of umbrella shape oscillator 13 is positioned at the top of conductive seat 21, and the height of the distance ground plane of the first rake 13b is equivalent to the height of its distance conductive seat 21.In addition, the second rake 13c of umbrella shape oscillator 13 is roughly positioned at the top of insulator foot 20, and the height of the distance ground plane of the second rake 13c is equivalent in fact its distance and fixes up an aerial wire the height of car body of device 1.Therefore, even if reduce the height of antenna assembly 1, the actual height of the distance ground plane of the second rake 13c also can be made to become large, can by increasing the working gain highly improving antenna assembly 1.
Figure 40 represents and the frequency characteristic of the frequency characteristic of the average gain of antenna assembly 1 of the present invention with the average gain of antenna assembly is in the past contrasted.In addition, average gain to be the elevation angle the be average gain of 45 °.
The size that antenna assembly 1 of the present invention is formed as highly about 66mm, width is about 63mm, length is about 151mm, antenna assembly is in the past formed as highly about 66mm, wide about 63mm, is about the size of 153mm, and two kinds of antenna assembly sizes are roughly the same.With reference to Figure 40, in antenna assembly 1 of the present invention, be about the situation of 84MHz in frequency, the maximum gain that can obtain is about-28dBd, in the situation of 76MHz to 90MHz frequency band, can obtain the average gain of about more than-34dBd.In contrast, in antenna assembly in the past, be about the situation of 84MHz in frequency, the maximum gain that can obtain is about-28.5dBd, in the situation of 76MHz to 90MHz frequency band, can obtain the average gain of about more than-35dBd.So known, at whole 76MHz to 90MHz frequency band, the gain of antenna assembly 1 of the present invention is improved.
Industrial utilizability
In antenna assembly 1 of the present invention discussed above, also the temporary fixed temporary fixed hook being extended with the engaging foot of paired lengthening from two sides can be embedded in the through hole of the bolt part 21a of conductive seat 21.When antenna assembly 1 is installed on vehicle, this engaging foot is sticked in the edge of the installing hole being formed in vehicle, realizes effect antenna assembly 1 being temporarily fixed on car body.In addition, when hook is embedded in through hole, via through hole, cable cannot be derived, but can self-forming at the wire outlet of the rear side of through hole, the cable being connected to amplifier be derived.
Claims (12)
1. an antenna assembly, is characterized in that comprising:
The radome of insulating properties, its lower surface opening and be formed with accommodation space in inside;
Antenna base, it embeds for this radome;
Umbrella shape oscillator, it is configured in the top of described antenna base, the rake of ridge comprising top and tilt to both sides from top, and this umbrella shape oscillator is provided with front side portion and rear lateral portion, and the inclination angle at the top of front side portion is larger than the inclination angle at the top of rear lateral portion;
Amplifier substrate, it is provided with the amplifier of the Received signal strength amplification making described umbrella shape oscillator, is configured on described antenna base; And
Coil, it is inserted between described umbrella shape oscillator and the input of described amplifier, and for making described umbrella shape oscillator produce resonance in the frequency of regulation, this coil configuration is in the below of the front side portion of described umbrella shape oscillator.
2. an antenna assembly, is characterized in that comprising:
The radome of insulating properties, its lower surface opening and be formed with accommodation space in inside;
Antenna base, it embeds for this radome;
Umbrella shape oscillator, it is configured in the top of described antenna base, the rake of ridge comprising top and tilt to both sides from top, and this umbrella shape oscillator is provided with front side portion and rear lateral portion, and the inclination angle at the top of front side portion is larger than the inclination angle at the top of rear lateral portion;
Amplifier substrate, it is provided with the amplifier of the Received signal strength amplification making described umbrella shape oscillator, is configured on described antenna base; And
Coil, it is inserted between described umbrella shape oscillator and the input of described amplifier, and for making described umbrella shape oscillator produce resonance in the frequency of regulation, this coil is connected to the front side portion of described umbrella shape oscillator.
3. antenna assembly according to claim 1, is characterized in that, described coil is connected to the front side portion of described umbrella shape oscillator.
4. antenna assembly according to claim 2, is characterized in that, described coil configuration is in the below of the front side portion of described umbrella shape oscillator.
5. antenna assembly according to any one of claim 1 to 4, is characterized in that, described antenna base comprises the insulator foot that embeds for described radome and less and be fixed on the conductive seat of described insulator foot than insulator foot.
6. antenna assembly according to claim 5, is characterized in that, described amplifier substrate is connected to described conductive seat by screw thread.
7. antenna assembly according to any one of claim 1 to 6, is characterized in that, also possess the oscillator support erectting the insulating properties arranged, described oscillator support is arranged on described antenna base,
Described umbrella shape oscillator to arrange in the mode that the approximate center of the left and right of described umbrella shape oscillator is configured with described oscillator support on the top of described oscillator support,
Described coil is fixed on described oscillator support.
8. antenna assembly according to claim 7, is characterized in that, described oscillator support adopts the frame portion of frame-shaped to be formed, and described coil is fixed on the described frame portion of described oscillator support.
9. antenna assembly according to any one of claim 1 to 8, is characterized in that, described umbrella shape oscillator and described coil carry out work as the resoant antenna resonated at FM frequency band, carry out work at AM frequency band as nonresonant antenna.
10. antenna assembly according to claim 5, it is characterized in that, when described radome is embedded in described insulator foot, the lower surface of described radome is fixed on described insulator foot by welding or bonding mode and is formed waterproof construction.
11. antenna assemblies according to claim 5, it is characterized in that, the snap-latch piece almost parallel with major axis is formed at described insulator foot, erected piece for described snap-latch piece engaging is formed at described conductive seat in the mode almost parallel with major axis, under the state that described snap-latch piece engages with described erected piece and described conductive seat is fixed on described insulator foot, described conductive seat can stretch along long axis direction relative to described insulator foot.
12. antenna assemblies according to claim 5, it is characterized in that, at described antenna base, the bolt part formed in the mode of giving prominence to from the lower surface of described conductive seat is given prominence to from lower surface via described insulator foot, and in the groove portion of lower surface being formed at described insulator foot in the mode of surrounding described bolt part, be embedded with annular seal ring.
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| CN201510121116.5A CN104752814B (en) | 2012-01-30 | 2012-01-30 | Antenna device |
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| CN201280025058.0A CN103548199A (en) | 2011-03-24 | 2012-01-30 | Antenna device |
| CN201510121116.5A CN104752814B (en) | 2012-01-30 | 2012-01-30 | Antenna device |
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| CN201280025058.0A Division CN103548199A (en) | 2011-03-24 | 2012-01-30 | Antenna device |
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| CN113839222B (en) * | 2017-02-23 | 2024-01-02 | 株式会社友华 | Antenna device |
| CN113839222A (en) * | 2017-02-23 | 2021-12-24 | 株式会社友华 | Antenna device |
| CN113839223A (en) * | 2017-02-23 | 2021-12-24 | 株式会社友华 | Antenna device |
| CN113839223B (en) * | 2017-02-23 | 2024-02-27 | 株式会社友华 | Antenna device |
| CN110495052A (en) * | 2017-03-29 | 2019-11-22 | 株式会社友华 | Antenna assembly |
| CN110945375B (en) * | 2017-07-31 | 2023-06-27 | 大金工业株式会社 | Sensor unit and air conditioner |
| CN110945375A (en) * | 2017-07-31 | 2020-03-31 | 大金工业株式会社 | Sensor unit and air conditioner |
| CN111630713A (en) * | 2018-02-19 | 2020-09-04 | 株式会社友华 | Vehicle-mounted antenna device |
| CN111630713B (en) * | 2018-02-19 | 2024-01-05 | 株式会社友华 | Vehicle-mounted antenna device |
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