JP2867324B2 - In-vehicle antenna mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted antenna mechanism, which is mounted on a pillar portion of an automobile, divided into a base body having an antenna rod mounted thereon, an element storage tube, and a coaxial cable, and these are appropriately attached and detached. It is an object of the present invention to achieve the mounting state of the element storage tube with a simple configuration, and to stably and strengthen the mounting state.

[0002]

2. Description of the Related Art Various types of mounting an antenna on a vehicle body pillar have been proposed. That is, as these conventional proposals, first, Japanese Utility Model Application Laid-Open No. 62-42.
314 as an antenna to be attached to a pillar portion of a vehicle body, an antenna rod which is inserted into a base portion so as to be extendable and retractable, is attached by using a fitting which is a cylindrical nut, and the antenna rod is stored therein. It is designed so that it can be removed together with the tube.

In the present applicant, Japanese Utility Model Laid-Open No. 1-1
No. 62910, an antenna attached to a pillar portion of a vehicle body, wherein an antenna rod which is extendably inserted into a base portion is attached using a lid which is an entrance / exit portion so that only the antenna rod can be extracted. The proposed vehicle-mounted pillar antenna device has been proposed.

Further, in Japanese Utility Model Laid-Open Publication No. 48-18015 (Japanese Utility Model Publication No. 53-32504), Japanese Utility Model Application Laid-Open No. 55-14369, and Japanese Utility Model Application Laid-Open No. 60-181907, an antenna mounted in a vehicle body and embedded therein is described. It is disclosed that the antenna rod and the storage tube cannot be easily removed together with the antenna rod as in the case of Japanese Utility Model Laid-Open Publication No. Sho 62-42314 and Japanese Utility Model Application Laid-Open No. 1-162910, but that the antenna body and the coaxial cable can be detachably attached.

[0005] The applicant of the present invention has proposed Japanese Patent Application Laid-Open No. Hei 6-164227 in addition to the above-mentioned one.
That is, we propose an antenna rod, base unit, etc. that can be appropriately attached and detached.
Inspection or repair is easy, and a stable assembly and mounting state can be formed. The mechanism that can simplify the manufacturing process consists of three parts: a base body, a coaxial cable, and an element storage tube. Then, it is proposed that each of those parts can be detached.

The mounting structure of the base, the coaxial cable and the element storage tube in this case is shown in FIG. 7, 8 or 9, and the element storage tube 33 is attached to the base 31.
And a connector portion 32 attached to the base end of the coaxial cable 35, and a pressing portion 34 for a connection portion of the element storage tube 33 is formed on the upper portion of the connector portion 32 as shown in FIG. Installed, or Figure 9
8, a slot 39 is formed at the base end of the element storage tube 33 and a fitting hole 36 is provided in addition to the holding portion 34 in FIG. 36 is provided with a protruding portion 37 that fits and detaches.

That is, in the device shown in FIG.
3 is attached by being pressed between the holding portions 34 of the connector body 32, and a fitting hole 36 provided in the element storage tube 33 is provided.
The projections 37, 37 provided on the power supply pipe 38 are fitted to each other to establish connection under a condition in which the axial movement of the element storage pipe 33 is prevented. Slots 39, 39 as shown in FIG. 9 are provided at the base end of the element storage tube 33 to facilitate the fitting.

[0008]

Any of the above-mentioned mechanisms is effective for replacing or repairing parts in the event of a failure in the antenna rod and the storage tube. If a failure occurs in the coaxial cable part that is integrally molded with the base body beyond the replacement and repair parts, damage to the base part itself, discoloration / dirt due to wax, water leakage due to aging, etc. Can not respond immediately That is, in such a case, the antenna set is removed and replaced and repaired.However, since the cable is usually connected and fixed to the power supply unit in the vehicle body, replacement and repair work is performed by general users. There is a disadvantage that it is difficult to do so and it has to be done by a specialist.

The above-mentioned Japanese Utility Model Laid-Open Publication No. 48-1801.
5, actual opening 55-14369, actual opening 60-18190
7 is intended to simplify the processing of the product and the work of attaching it to the vehicle.
The antenna body and the coaxial cable are detachable because of the pin-jack system, and the entire antenna body can be removed and replaced / repaired, but the element storage tube is fixed to the inner wall of the vehicle body by metal fittings or the like. In the end, as described above, replacement and repair by ordinary users becomes difficult, and there is no other way but to use a specialist engineer of the dealer. In addition, the work of the dealer is extremely difficult due to the complicated wiring of the coaxial cable in the vehicle body and the large number of fixing points as described above, and the extremely small mounting position of the element storage tube, which requires a long time. There is a disadvantage that the cost must be high.

The above-mentioned one has the above-mentioned advantages and is a preferable mechanism. However, as shown in FIGS. 7 to 9, the fitting hole 36 of the element storage tube 33 and the pressing part 34 of the connector part 32 are provided. When a rotational force acts between them, the fitting hole 36
9, the pressing portions 34 of the connector body 32 with respect to the element storage tube 33 are also expanded at the slits 39 as shown in FIG. 9, so that the pressing action is not performed. That is, in this state, there is a tendency that the connection connection relationship between the element storage tube 33 and the projection 37 on the side of the power supply tube 38 cannot be ensured, and the element storage tube 33 easily comes off due to a slight tensile force acting thereon, thereby achieving accurate connection. There is a disadvantage that a relationship cannot be formed.

[0011]

SUMMARY OF THE INVENTION The present invention has been studied to solve the above-mentioned problems in the prior art, and formed an element storage tube holding portion in a coaxial cable connector to form an element storage tube as described above. By holding the connecting portion, forming a slit at the tip of the element storage tube, and providing a locking projection and its engaging hole between the power supply tube and the element storage tube, special parts etc. This has succeeded in securing an effective connection and connection and obtaining a stable function with a simple configuration that does not require the following.

(1) An antenna rod is provided on a base member made of an insulator for setting on a vehicle body surface so as to be extendable and retractable, and an element storage tube for receiving the antenna rod and a connector member provided on a coaxial cable can be detachably attached. Wherein a slit is provided at the tip of the element storage tube and fitted to a power supply tube protruding from the base body, and is engaged with a locking protrusion formed on a side surface of the power supply tube. An engaging hole is provided in the element housing tube, and the connector member is integrally provided with a connection receiving portion surrounding and holding the fitting portion on the distal end side of the element housing tube with respect to the power supply tube as described above. Features a vehicle-mounted antenna mechanism.

(2) The power supply pipe protruding from the base body is provided with an engaging projection that engages with and disengages from the engaging hole provided on the base end side of the element housing pipe. The in-vehicle antenna mechanism according to the above (1), wherein a hook portion is provided at the portion to be locked to an end of the element storage tube.

(3) An engaging portion is formed on the element storage tube fitted to the power supply tube protruding from the base body, and a projection is provided on the element storage tube and formed on the connector member. The on-vehicle antenna mechanism according to the above (1), wherein the connection receiving portion has an engagement hole for engaging and disengaging from the engaging portion.

[0015]

[Action] An insulating base member 1 to be set on the vehicle body surface
An antenna rod 4 is provided so as to be extendable and retractable, and an element storage tube 3 for receiving the antenna rod 4 and a connector member 2 provided on the coaxial cable 5 are detachably provided. Slit 15
And an engaging hole 14 which is fitted to the power supply pipe 8 protruding from the base body and engages with a locking projection 18 formed on a side surface of the power supply pipe 3. As a result, the insertion area of the element storage tube 3 inserted along the power supply pipe 8 is appropriately enlarged at the slit portion to facilitate the fitting operation to the power supply pipe 8, and the elastic pressure in the fitted state. To form an accurate connection and fix to form an effective connection.

The connector member is provided with a connection receiving portion for surrounding and holding the fitting portion of the element storage tube to the power supply tube as described above, so that the connector member and the element storage tube are surrounded by the connection reception portion. The receiving portion, which is held and surrounded and connected, presses the distal end portion of the element storage tube, which is slit as described above, precisely so as to narrow the slit gap, thereby effectively establishing the connection relationship. The element storage tube is strengthened, and the axial direction between the connector member and the connection receiving portion is restricted, so that the fitting relationship between the protrusion and the engagement hole provided between the element storage tube and the power supply tube or the connector member is always maintained. Make it appropriate.

A feed pipe protruding from the base body is provided with an engaging projection for engaging and disengaging an engagement hole provided on the base end side of the element housing pipe. Provision of a hook portion for locking at the end of the element storage tube thus properly defines the fitting engagement relationship between the power supply tube and the base body and the element storage tube and the relative position thereof, and appropriately positions the element. To secure the fitted connection state.

An engagement portion is formed in the element storage tube fitted to the power supply tube protruding from the base body, and a projection is provided on the element storage tube, and a ring-shaped member formed on the connector member. The receiving portion is provided with an engaging hole that engages with and disengages from the engaging portion, so that the engagement fitting relationship between the power supply tube, the base body, and the element storage tube and the relative position between them can be determined properly. To maintain a good fit connection state.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, a specific embodiment of the present invention as described above will be described. The general structure of the present invention is as shown in FIG. Antenna rods 4 and 4a are inserted into the base member 1 so as to be extendable and contractible, and a connector portion 11 is protruded from the back surface of the base body 1, and a coaxial cable 5 is connected to the connector portion 11 via a coaxial cable side connector 2. This is the same as that described in the above-mentioned JP-A-6-164227.

In addition to the above-mentioned coaxial cable 5, the element housing tube 3 is provided on the back surface of the base pad 12 of the base body 1.
The coaxial cable 5 and the element storage tube 3 are attached.
The coaxial cable 5 is connected to an in-vehicle receiver which is appropriately separated by a plug 7. It is well known that the base body 1 is fixed to the vehicle body surface with screws or the like inserted in mounting holes provided before and after the base body 1 and that the antenna rod 4 as an element is moved in and out of the element storage tube 3. It is as follows.

With respect to the details of attachment or connection of the element storage tube 3, the coaxial cable 5 and the like to the base part 1, the base part 1 is attached to the vehicle body surface by using the base pad 12. As shown in FIG. 2, a power supply pipe 8 having a grounding plate and having a conductive member is mounted inside the element housing pipe 3 as shown in FIG. Since the power supply pipe 8 is also inclined with respect to the base body 1 because the power supply pipe 8 is inclined with respect to the base body 1 and the base pad 12 as shown in FIG. An antenna rod 4 serving as an element is slidably received along the axis extension direction.

As shown in FIG. 1, the connector 11 protrudes from the back surface of the base body 1 in a direction perpendicular to the inclination direction of the element housing tube 3 (ie, the feed tube 8). As shown in FIG. 2, the connector 11 has a feed pipe terminal 18 connected to the feed pipe 8 and an earth plate terminal 16 projecting from the ground plate.
The power supply tube 8 having a small diameter in the middle portion has a large diameter portion 19b on the distal end side and has the same diameter as the base portion provided with the engaging portion 19, and each terminal of the connector portion 11 The connector 2 on the coaxial cable 5 side is attached to and detached from the sections 16 and 18.

The specific structure of the connector portion 11 and the connector 2 attached to the coaxial cable 5 is as shown in FIGS. 3 and 4, and is a fitting which is a tip portion having a slit portion 15 of the element storage tube 3. The state in which the part 3a side is inserted into the feed pipe 8 protruding from the base body 1 is as shown in FIG. 3, and the connector 2 is slid in this state of FIG. When the connector 2 is pushed so as to be joined to the portion 11a, the connector 2 is pushed as shown in FIG. 4, and the connection receiving portion 20 protruding from the rear of the connector 2 is attached to the distal end portion 3a of the element storage tube 3 as described above. A covered set state is configured, and the terminal sections 16 and 18 of the connector section 11 are respectively connected to the core terminal section and the ground plate connection section provided inside the connector 2.

A slit 15 and an engagement hole 14 are formed at the tip end of the element storage tube 3 as shown in FIG.
As shown in FIG.
Form a connection relationship in which the engagement receiving portions 20 of the connector 2 advance to the connected state as shown in FIG. It is locked between the tip of the element storage tube 3 and the connector portion 11.

In the case where an engagement hole 22 is formed in the widthwise middle portion of the connection receiving portion 20 as shown in FIG. 4, the feed pipe 8 has an inclined surface with the connector portion 11 side higher as shown in FIG. The engagement portion 19 having the engagement portion 19a is formed higher than the engagement portion 28 shown in FIG. 5, so that when the element storage tube 3 is mounted on the power supply tube 8, the engagement portion 19 exceeds the thickness of the engagement hole 14. As shown in FIG. 6, the connector 2 is slid forwardly into the thickness range of the receiving portion 20, and the connector 2 is slid forward to lock the connecting receiving portion 20 with the engagement hole 22 as shown in FIG. This is achieved with only 19.

[0026]

According to the present invention as described above, the base part, the element housing tube, and the coaxial cable can be appropriately divided into three parts. Therefore, either one of the coaxial cable and the element housing tube or It is possible to remove the base body including the antenna rod from the vehicle body while leaving both in the vehicle body, breakage of the antenna rod, electrical abnormalities in the base body including the feed pipe, etc., damage to each part itself and appearance Can easily deal with any defects or aging at any time, and can be properly processed by the user himself without the need of a specialized technician.In the production and assembly, a slot is provided at the tip of the element storage tube. The slot is extremely easy to use, and the slot is held by the connection holding part and fitted with the locking projection and the engagement hole, so that a very stable connection is obtained. In addition, the assembled state is accurately achieved by a simple structure, and therefore, the assembled state does not fluctuate and disengage even under conditions where a bending action force or a torsional action force is applied, and is stable and has high strength. Thus, the present invention has an industrially significant effect.

According to the present invention, the axial position between the connector member and the element housing tube is regulated so that the fitting engagement relationship between the element housing tube and the feed tube or the connector member and the position of the engagement can be appropriately adjusted. In this manner, a properly connected fitting connection state is always ensured, and the above-described effects can be efficiently obtained.

[Brief description of the drawings]

FIG. 1 is an intermediate omitted side view showing a configuration relation of a whole vehicle-mounted antenna mechanism according to the present invention.

FIG. 2 is a side view showing a separated state of the base portion and the connector member.

FIG. 3 is an enlarged perspective view showing an exploded state of the base portion and the connector member.

FIG. 4 is a perspective view showing a fitted state of the base portion and the connector member shown in FIG. 3, and shows a different configuration of the ring-shaped receiving portion from FIG. 3;

FIG. 5 is a cross-sectional view showing an insertion connection relationship of an element storage tube to a feed tube.

FIG. 6 is a cross-sectional view of a power supply pipe and an element storage pipe connection portion having a configuration shown in FIG. 4 which is different from that shown in FIG.

FIG. 7 is a side view showing a state in which a conventional base body and an element storage tube are attached.

FIG. 8 is a cross-sectional view showing an example of a state in which the element storage tube is attached to the base portion.

FIG. 9 is a cross-sectional view similar to FIG. 8, showing a configuration different from that of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base part 2 Connector on the coaxial cable side 3 Element storage tube 3a Fitting part which is the tip part 4 Antenna rod 5 Coaxial cable 6 In-vehicle fixed part 7 Plug 8 Power supply pipe 9 Cable holding fixture 10 Cable introduction part 11 Connector part Reference Signs List 12 base pad 13 element storage tube mounting portion 14 engagement hole 15 slot 16 ground plate terminal portion 17 conductive member 18 power supply tube terminal portion 19 engaging portion 19a inclined surface 19b large diameter portion 20 connection receiving portion 22 engagement hole 24 locking projection 28 engaging projection 31 conventional base body 32 connector section 33 element storage tube 34 holding section 35 coaxial cable 36 fitting hole 37 protrusion 38 power supply pipe 39 slit

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01Q 1/00-1/52

Claims (3)

(57) [Claims] An antenna rod is provided on a base member made of an insulator for setting on a vehicle body surface so as to be extendable and retractable, and an element storage tube for receiving the antenna rod and a connector member provided on a coaxial cable are detachably attached to each other. A slit is provided at a tip end of the element storage tube, and is fitted to a power supply tube protruding from the base body, and is engaged with a locking protrusion formed on a side surface of the power supply tube. An engagement hole is provided in the element storage tube, and the connector member is provided integrally with a connection receiving portion that surrounds and holds a fitting portion on the distal end side of the element storage tube with respect to the power supply tube. Vehicle-mounted antenna mechanism. 2. A connection receiving portion provided on a connector member, wherein a power supply tube protruding from a base body is provided with an engaging portion for engaging and disengaging an engagement hole provided on a base end side of the element housing tube. 2. The on-vehicle antenna mechanism according to claim 1, further comprising a hook portion that is engaged with an end of the element storage tube. 3. An engagement portion is formed on an element storage tube fitted to a power supply tube protruding from a base body, and a projection is disposed on the element storage tube and formed on a connector member. The on-vehicle antenna mechanism according to claim 1, wherein the connection receiving portion is provided with an engagement hole for engaging and disengaging the engaging portion.