JP6317947B2 - Antenna device - Google Patents

Description

  The present invention relates to a standing antenna device installed on a vehicle roof. More specifically, the present invention relates to an antenna device having a feature in a mounting structure to a vehicle.

  In recent vehicles, a mounting hole for mounting a long streamline antenna device called a shark fin antenna is formed in the vehicle roof. When attaching the antenna device, first, an attachment member (bolt or the like) protruding from the outside of the vehicle roof to the lower side of the antenna device is inserted into the attachment hole. Then, after positioning the mounting member from the inside of the vehicle roof, a support member such as a washer is interposed in the bolt, and the bolt is fastened and fixed with a nut.

  When the antenna device is attached to the vehicle roof as described above, normally, it is necessary to perform work almost simultaneously on the outside and inside of the vehicle roof, so two workers are required. In addition, work such as setting a support member such as a washer or tightening a nut on a bolt is required until the antenna device is fixed. Therefore, many work processes are required and time is required.

Further, the mounting hole of the vehicle roof is generally designed to be larger than a bolt or the like protruding from the antenna device. Therefore, a gap is inevitably generated between the mounting hole and the mounting member. As a result, when the antenna device is fixed to the vehicle roof, the antenna device is displaced in the horizontal direction by a maximum of the gap due to the rotational force generated when the nut is tightened. According to actual measurements, in the case of a long antenna device whose distance from the mounting member to the tip thereof is 100 [mm], the antenna device is inclined about 3 degrees in the horizontal direction, and the tip of the antenna device is about 5 [mm] from the original direction. It tilts in the horizontal direction.
In the case of a pole antenna that is short in the horizontal direction, there was no particular problem, but in the case of the long streamline-shaped antenna device as described above, tilting in the horizontal direction not only looks bad in appearance but also has air resistance. As fuel consumption increases, fuel consumption deteriorates.

  In order to solve such a problem, in the mounting assembly described in Patent Document 1, an expandable member is used to autonomously fix the shaft member (mounting member) extending from the base of the antenna device from the inside of the vehicle roof. Furthermore, an anti-rotation mechanism for preventing rotation at the time of attachment or after attachment is provided. The expandable member is provided in the mounting member of the antenna device, and when passing through the mounting hole of the vehicle roof, the expandable member expands to a size larger than the mounting hole and includes a plurality of elastic members that contact the inside of the vehicle roof. Have.

  In addition to the mounting hole, for example, the rotation prevention mechanism has another opening (second opening spaced apart from the mounting hole by a certain distance) formed in the vehicle roof, and a keying mechanism (projection body) in the base portion of the antenna device. ) And the keying mechanism is inserted into the opening to prevent the antenna device from rotating.

JP 2005-506732 A

  The mounting assembly described in Patent Document 1 is very convenient because it is fixed to the vehicle roof by the elastic force of the expandable member simply by inserting and pressing the mounting member into the mounting hole of the vehicle roof. However, in this mounting assembly, once the mounting member is fixed, it becomes difficult to correct the direction after that. In particular, if the direction of the antenna device is to be corrected later, the vehicle roof may be peeled off.

  There is an expectation that such a fear can be eliminated by using a rotation prevention mechanism. That is, if the second opening is formed in the vehicle roof in advance according to the position and size of the keying mechanism protruding from the antenna device, it is not necessary to correct the position afterwards. However, since there is usually only one mounting hole for the antenna device formed in the vehicle roof, another aperture is formed in accordance with the position and size of the keying mechanism of the antenna device in order to mount the antenna device. Is difficult to work with, and above all, it may not be desired by the user of the vehicle.

  In order to solve the above-described problem, the present invention provides a long antenna device that is erected from a vehicle roof, without requiring a plurality of workers, and with a mounting hole formed in the vehicle in advance or its periphery. An object of the present invention is to provide an antenna device that can be mounted correctly in a predetermined direction without being processed.

The present invention as a means for solving the above problems, through a substantially rectangular mounting hole formed in the mounting surface of the vehicle has an antenna base which is mounted on the vehicle, the antenna base The outer peripheral shape of the mounting member is substantially similar to the mounting hole and protrudes with a size smaller than the mounting hole, and the mounting member is inserted into the mounting hole from the outside to the inside of the mounting surface. As the insertion proceeds, the attachment member is pressed against the other side of the attachment hole so that the gap between the inner wall of one of the pair of opposite sides of the attachment hole and the outer periphery of the attachment member expands. A pressing member for bringing the gap between the inner wall and the outer periphery of the mounting member close to zero is provided, and the mounting member is provided with a storage mechanism for storing the pressing member, Fixed to the accommodation mechanism A mounting base, an arm portion extending from the mounting base toward the one side of the mounting hole, and projecting outward from the outer surface of the arm portion and from the tip of the arm portion toward the mounting base. A protrusion whose amount of protrusion from the outer surface increases, and the lower surface of the outer surface of the portion where the distance from the mounting base of the arm portion is larger than the protrusion serves as a fulcrum of bending, The antenna device is provided with a locking claw having an upper end projecting outward from the protrusion larger than the protrusion.

The present invention, which is another means for solving the above-described problems, includes an antenna base that is mounted on the vehicle via a substantially rectangular mounting hole formed on a mounting surface of the vehicle, and the antenna base The outer peripheral shape of the mounting member is substantially similar to the mounting hole and protrudes in a size smaller than the mounting hole, and the mounting member is inserted into the mounting hole from the outside to the inside of the mounting surface. A pressing member that presses the mounting member against the inner walls of the two sides connected to the corners of the mounting hole when the mounting member is pressed, and closes the gap between the two sides to zero. An accommodation mechanism for accommodating the member is provided, and the pressing member includes an attachment base fixed to the accommodation mechanism, and one or a plurality of arms extending from the attachment base toward the side of the attachment hole. And the mounting base Extending toward the first corner located diagonally with the corner, and an arm protruding from the outer surface toward the inner wall of the first corner. The lower end portion is a fulcrum of deflection, and the upper end portion is provided with a locking claw that protrudes outward from the outer surface, and the arm portion protrudes from the outer surface toward the base end portion. This is an antenna device having a protruding portion whose amount increases .

  According to the present invention, when the attachment member is inserted into the attachment hole from the outside to the inside of the mounting surface, the displacement of the attachment member, for example, the attachment, out of the gap between the outer periphery of the attachment member and the inner wall of the attachment hole. Since the clearance allowing rotation in the plane parallel to the hole forming surface approaches zero, displacement of the antenna base is suppressed.

1 is an external perspective view of an antenna device according to a first embodiment. 1 is an exploded perspective view of an antenna device according to a first embodiment. Structure explanatory drawing of the attachment member seen from the inner side of the attachment hole. (A) is the figure which looked at the bottom part of the antenna base from the inner side of an attachment hole, (b) is a figure which shows a mode that after inserting a washer, screwing a nut in a screw groove and tightening. (A) is a schematic diagram which shows a mode that a rotational force acts on an attachment member, (b) is a schematic diagram which shows a mode that an antenna base is displaced (inclined) in a horizontal direction by this. The perspective view which shows the structural example of the pressing member in 1st Embodiment. (A) is a fragmentary perspective view before attachment to the antenna base of a pressing member, (b) is a fragmentary perspective view after attachment. The side part cross-section figure which shows the state where a pressing member interposes in a clearance gap. The figure which showed the positional relationship of the attachment hole and attachment member when a pressing member is made to act. The perspective view which shows the structural example of the pressing member in 2nd Embodiment. (A) is a fragmentary perspective view before attachment to the antenna base of a pressing member, (b) is a fragmentary perspective view after attachment. The figure which looked at the bottom part of the antenna base from the inner side of the attachment hole when the pressing member of 2nd Embodiment is mounted to the antenna base. The figure which showed the positional relationship of the attachment hole and attachment member when a pressing member is made to act. The fragmentary perspective view which shows the attachment state of the pressing member of 3rd Embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
FIG. 1 is an external perspective view of the antenna device according to the first embodiment, and FIG. 2 is an exploded perspective view thereof.
The antenna device 1 is a standing antenna device that is mounted through a mounting surface of a vehicle, for example, a substantially rectangular mounting hole 52 formed in a vehicle roof 50. The “substantially rectangular shape” means, for example, a square, a rectangle, a trapezoid or other similar shape with rounded corners.

  The antenna device 1 includes an antenna base 10 made of a long metal, a pressing member 12, and antenna components and electronic components (hereinafter referred to as "components") mounted on a substrate provided on the upper surface of the antenna base 10. .). The cover 20 is a long streamline type called a shark fin, and has a double case structure of a single cover or an outer case which is an outer cover, and an outer case which is substantially similar to the outer case. Things are included.

In this specification, the surface portion on which the substrate on which the components of the antenna base 10 are mounted is installed is referred to as “upper surface portion”, and the surface portion that faces the attachment hole 52 when attached to the attachment hole 52 is referred to as “bottom surface portion”. Further, the direction of the top surface portion is referred to as “upward”, and the direction of the bottom surface portion is referred to as “downward”. Further, in the mounting hole 52, the outside of the vehicle is referred to as “outside” and the inside of the vehicle is referred to as “inside”.
A mounting member 11 projects downward from the bottom surface of the antenna base 10. The attachment member 11 is a member for inserting and fixing the antenna base 10 into the attachment hole 52 of the vehicle roof 50.

FIG. 3 is an explanatory diagram of the structure of the attachment member 11 as seen from the inside of the attachment hole 52. Referring to FIG. 3, the attachment member 11 protrudes from the bottom surface portion 130 of the antenna base 10, a substantially cylindrical bolt 111 that is integrally formed with the antenna base 10, and a portion that is separated from the center portion of the bolt 111 by a certain distance. And a pair of positioning guides 112 protruding from the head.
A screw groove 111a is threaded on the outer periphery of the bolt 111, and a distance connecting two opposite sides of the mounting hole 52 to the screw groove 111a from the inside of the vehicle roof 50 through a washer (not shown). A large nut (not shown) is screwed. In the hollow portion 111b of the bolt 111, a cable or the like (not shown) for electrically connecting a circuit component or the like mounted on the substrate on the upper surface portion of the antenna base 10 and an instrument in the vehicle is inserted.
The pair of positioning guides 112 are necessary for correctly attaching the attachment member 11 to the attachment hole 52 because the attachment hole 52 is substantially rectangular and the bolt 111 is substantially cylindrical.

  The shape connecting the outer periphery of the bolt 111 and the outer periphery of the pair of positioning guides 112, that is, the shape of the outer periphery of the mounting member 11 is substantially similar to the mounting hole 52 and is smaller than the mounting hole 52. Therefore, in a state where the attachment member 11 is inserted into the attachment hole 52, a clearance (gap) 53 is generated between the outer periphery of the attachment member 11 and the inner wall of the attachment hole 52.

  The process of attaching the attachment member 11 to the vehicle roof 50 will be described with reference to FIG. FIG. 4A shows a state where the cable 200 is inserted into the hollow portion 111 b of the bolt 111 and then bent in the direction parallel to the antenna base 10. In this figure, the bottom of the antenna base 10 is viewed from the inside of the mounting hole 52. At this point, the problem related to the gap 53 has not been solved. FIG. 4B shows a state in which after the washer 113 is inserted, the nut 111c is screwed into the thread groove, and is rotated and tightened in the illustrated direction.

  As shown in FIG. 4A, a gap is formed between the outer periphery of the attachment member 11 and the inner wall of the attachment hole 52. Therefore, when the nut 111c is rotated as shown in FIG. As shown in a), a rotational force acts on the mounting member 11 in the directions of arrows 511 and 512 around the central shaft portion 510 of the bolt 111. Therefore, as shown in FIG. 5B, the antenna base 10 is displaced (tilted) in the horizontal direction.

The pressing member 12 prevents such a phenomenon from occurring. When the mounting member 11 of the antenna base 10 is inserted into the mounting hole 52 from the outside to the inside of the vehicle roof, the pressing member 12 is the antenna among the gap between the outer periphery of the mounting member 11 and the inner wall of the mounting hole 52. This is a member that presses the attachment member 11 against the inner wall of the attachment hole 52 so that the gap (first gap) allowing the displacement of the base approaches zero.
In this example, in the gap between the outer periphery of the attachment member 11 and the inner wall of the attachment hole 52, as the insertion of the attachment member 11 into the attachment hole 52 proceeds, The attachment member 11 is pressed so that the gap (second gap) between the inner wall and the outer periphery of the attachment member 11 is expanded, and thereby the first gap between the inner wall of the other side and the outer periphery of the attachment member 11 is brought close to zero. In this state, the antenna base 10 is temporarily held or fixed in the mounting hole 52.

  The pressing member 12 has various shapes, structures, materials, sizes, and attachment methods to the antenna base 10. In this embodiment, the pressing member 12 is molded from a flexible resin so as to exhibit sufficient flexibility. A pressing member 12 is used. An example of the structure of the pressing member 12 is shown in FIG.

Referring to FIG. 6, the pressing member 12 includes a substantially rectangular annular mounting base 121 and a first arm portion having a base end below two opposing ends of the mounting base 121 and a free end at the distal end. 121a, and a first arm portion 121a and a second arm portion 121b having a mounting base 121 separated from the first arm portion 121a by the size of the short side of the mounting hole 52 as a base end and a distal end thereof being a free end.
The first arm portion 121 a is an arm portion that extends toward one side of the attachment hole 52 when the attachment member 11 is attached to the attachment hole 52, and the second arm portion 121 b is formed on the other side of the attachment hole 52. It is an arm part extended toward.

  One of the first arm part 121a and the second arm part 121b, for example, the second arm part 121b, is provided with a protrusion 121c that protrudes outward from its outer surface. As for this protrusion 121c, the protrusion amount from an outer surface increases as it goes to the attachment base 121 from the front-end | tip of the 2nd arm part 121b. Therefore, when the mounting member 11 of the antenna base 10 is inserted into the mounting hole 52 from the outside to the inside of the vehicle roof 50, the mounting member 11 is brought into contact with the inner wall on either side of the mounting hole 52 in advance. Can do. That is, the pressing member 12 is interposed in a gap (second gap) between the outer periphery of the mounting member 11 and the inner wall of the mounting hole 52, and the insertion of the mounting member 11 into the mounting hole 52 proceeds as the mounting member 52 faces the mounting hole 52. A gap (first gap) on one side of the pair of sides is expanded. As a result, the attachment member 11 abuts against the inner wall of the other side facing the one side of the attachment hole 12, so that the rotation of the antenna base 10 in a plane parallel to the formation surface of the attachment hole 52 is suppressed.

  In the first arm portion 121a and the second arm portion 121b, the lower end portion surrounded by the gap portions 121d and 121f is bent on the outer surface of the portion where the distance from the mounting base 121 is larger than the protrusion 121c. Locking claws 121e and 121g are provided that serve as fulcrums and whose upper ends protrude outwardly larger than the gap between the outer periphery of the mounting member 11 and the inner wall of the mounting hole 52. When the insertion into the mounting hole 52 of the antenna base 10 passes through the upper end portion through the lower end portions of the locking claws 121e and 121g, the upper end portions of the locking claws 121e and 121g respectively protrude outward. Therefore, when a load in the pulling direction is applied to the antenna base 10, the pulling force (force required for pulling out) increases, and the holding force can be improved.

  The pressing member 12 is fixed to a portion corresponding to the base end portion of the bolt 111 in the upper surface portion of the antenna base 10. Therefore, a fixture 121 h to the antenna base 10 for fixing with screws is formed at the corner of the mounting base 121. The pressing member 12 is also formed with a pair of grooves 121 i and 121 j for positioning to the antenna base 10.

FIG. 7A is a partial perspective view before the pressing member 12 is attached to the antenna base 10, and FIG. 7B is a partial perspective view after the attachment.
The antenna base 10 is formed with a housing mechanism 101 for housing the pressing member 12. The housing mechanism 101 includes a main housing portion 101 a that houses the mounting base portion 121 of the pressing member 12, and a first sub-portion that houses the first arm portion 121 a and exposes the outer surface of the first arm portion 121 a from the side surface of the bolt 111. A housing portion 101b, a second sub housing portion 101c that houses the second arm portion 121b and exposes the outer surface of the second arm portion 121b from the side surface of the bolt 111, and a screw receiving mechanism 101h that corresponds to the fixture 121h. Have.
The main housing portion 101 a is a housing body having a through hole that communicates with the central shaft portion of the bolt 111 that is integrally formed with the bottom surface portion of the antenna base 10. Fitting bodies 101d and 101e that fit into the positioning grooves 121i and 121j of the mounting base 121 are formed in the side portion adjacent to the first sub-accommodating portion 101b and the portion facing the side.

  The pressing member 12 is fixed by inserting the male screw 122 into the fixture 121h and screwing it into the screw receiving mechanism 101h of the antenna base 10 (FIG. 4B). At that time, although not shown, the first arm portion 121a and the second arm portion 121b are exposed from the vicinity of the base end portion of the bolt 111.

FIG. 8 is a side sectional structural view showing a state in which the pressing member 12 is interposed in the gap (second gap) when the mounting member 11 is inserted into the mounting hole 52. In the illustrated example, the protrusion 121c protruding from the second arm portion 121b of the pressing member 12 is in contact with one inner wall of the pair of sides facing the mounting hole 52, and the gap in the side is expanded. Represents. FIG. 9 shows the positional relationship between the mounting hole 52 and the mounting member 11 in this state.
That is, the mounting member 11 is pushed in the direction of the arrow 515 by the protrusion 121c of the pressing member 12 interposed in the gap 53 on one side of the mounting hole 52 before the tightening of the nut 111c to the bolt 111 starts. When the nut 111c is tightened, a rotational force acts on the mounting member 11 around the point of action that is the central shaft portion 510 of the bolt 111, and the mounting member 11 tends to be displaced in the direction of the arrow 516. Since the first gap) is eliminated, the displacement is suppressed.

Thus, according to the antenna device 1 of the first embodiment, the pressing member 12 for bringing the gap (first gap) required for the displacement of the antenna base 10 close to zero is different from the gap (first gap). By interposing in the gap (second gap) between the parts, the rotation of the antenna base 10 is suppressed. Further, since the antenna base 10 is prevented from coming off by the locking claws 121f and 121g, the installation work of the antenna device 1 to the vehicle roof 50 can be performed by one worker.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the second embodiment, an example of an antenna device in which the structure of the pressing member is different from that of the first embodiment will be described. About the thing same as the thing shown in 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 10 is an external perspective view of the pressing member of the second embodiment. The pressing member 22 has a substantially rectangular annular mounting base 221 for fixing to the housing mechanism 101 of the mounting member 11 and an arm portion 222 that protrudes in the horizontal direction from the side of the mounting base 221. . The mounting base 221 is also formed with a fixture 221h for fixing to the antenna base 10 with screws and a positioning groove 221i. Although not shown in the figure, a positioning groove is also formed in the lower part of the mounting base 221 from which the arm 222 protrudes.

  The arm portion 222 projects toward a portion corresponding to the positioning guide 112 in the outer periphery (substantially rectangular shape) of the mounting member 11. That is, in a state where the attachment member 11 is inserted into the attachment hole 52 of the vehicle roof 50, the arm portion 222 projects toward one of the four corners of the attachment hole 52 (first corner). To do. A protruding portion 223 is formed downward from the arm portion 222, and the protruding amount of the protruding portion 223 from the outer surface increases from the lower tip portion toward the proximal end portion of the arm portion 222.

  A first arm portion 221 a whose tip is a free end is formed from the lower end portion of the mounting base portion 221. Further, a second arm portion 221b whose tip is a free end is formed from the lower end portion of the attachment base portion 221 that is separated from the first arm portion 221a by the size of the short side of the attachment hole 52. The first arm portion 221 a is an arm portion that extends toward one side of the mounting hole 52 when the antenna base 10 is attached to the mounting hole 52, and the second arm portion 221 b is on the other side of the mounting hole 52. It is an arm part extended toward.

  On the outer surfaces of the first arm part 221a and the second arm part 221b, there are locking claws 221e and 221g whose lower ends surrounded by the gaps 221d and 221f serve as fulcrums and whose upper ends protrude outward. Is provided. When the insertion into the mounting hole 52 of the antenna base 10 proceeds and the mounting hole 52 passes through the upper ends of the locking claws 221e and 221g, the upper ends of the locking claws 221e and 221g respectively protrude outward. Therefore, when a load in the pulling direction is applied to the antenna base 10, the pulling force (force required for pulling out) increases, and the holding force can be improved.

  FIGS. 11A and 11B are diagrams showing a procedure for attaching the pressing member 22 to the antenna base 10, wherein FIG. 11A is a partial perspective view before attachment, and FIG. 11B is a partial perspective view after attachment.

The antenna base 10 is formed with an accommodation mechanism 201 for accommodating a portion of the attachment base portion 221 of the pressing member 22 in the attachment member 11 and an accommodation hole 202 for accommodating the protruding portion 223 of the arm portion 222. Yes.
The accommodating mechanism 201 includes a main accommodating portion 201a that accommodates the attachment base portion 221 of the pressing member 22, a first sub accommodating portion 201b that accommodates the first arm portion 221a and is exposed from the side surface of the bolt 111 protruding from the bottom surface portion. And a second sub-accommodating portion 201c that accommodates the second arm portion 221b and is exposed to the side surface of the bolt 111 protruding from the bottom surface portion. The accommodation mechanism 201 is also formed with a screw receiving mechanism 201h and a fitting body 201i (201j) that fits into the positioning groove 221i.

The main housing portion 201a is a housing body having a through-hole that communicates with the central shaft portion of the bolt 111 of the mounting member 11 that is integrally formed on the bottom surface portion side, and the basic structure is the pressing of the first embodiment. This is the same as the main housing portion 101a of the member 12.

  The pressing member 22 is fixed by inserting a male screw 232 into the fixing tool 221h and screwing it into the screw receiving mechanism 201h of the antenna base 10 (FIG. 11B). At that time, although not shown, the portions of the first arm portion 221a and the second arm portion 221b are exposed from the vicinity of the base end portion of the bolt 111 as in the case of the first embodiment.

The accommodation hole 202 is formed by cutting out a portion corresponding to one of the pair of positioning guides 112 out of the portion connecting the outer circumferences of the attachment member 11, and forming a protrusion 223 protruding from the arm portion 222 of the pressing member 22 here. The tip is accommodated. The structure of the attachment member 11 including the accommodation hole 202 will be described with reference to FIG. FIG. 12 shows a state in which a cable or the like (not shown) is inserted into the hollow portion 111b of the bolt 111, the insertion member 11 is inserted into the attachment hole 52, and then a nut (not shown) is screwed into the screw groove 111a of the bolt 111. Shows the state. In this figure, the bottom of the antenna base 10 is viewed from the inside of the mounting hole 52 of the vehicle roof 50. The same state occurs immediately before the nut is tightened on the bolt 111. That is, the locking claws 221e and 221g of the attachment member 11 pass through the attachment hole 52, the positioning guide 112 is also set, and the outer surface of the projection 223 abuts on the arc portion of the accommodation hole. As described above, since the protrusion 223 increases from the lower end toward the base end of the arm 222, the protrusion from the outer surface increases. And the gap between the first corners of the mounting hole 52 is expanded, whereby the mounting member 11 is pushed against the inner walls of the two sides of the mounting hole 52 connected to the corner (second corner) located diagonally to the first corner. Hit it. This is schematically shown in FIG.

Referring to FIG. 13, by the protrusion 223 is inserted into the gap of the first corner portion (second gap), it acts the force of the arrow 517 to the mounting member 11 the gap is expanded, the mounting member 11 Comes into contact with the inner walls of the two sides connected to the second corner. That is, the gap (first gap) between two opposing sides of the outer periphery of the attachment member 11 and the inner wall of the attachment hole is zero. Therefore, when the nut 111c is tightened to the bolt 111 of the mounting member 11, a rotational force acts in the directions of arrows 518 and 519 to attempt to displace the mounting member 11, but the two sides connected to the second corner are already on the two sides. Since there is no gap (first gap), the displacement of the attachment member 11 is suppressed. For this reason, the phenomenon that the antenna base 10 is displaced (tilted) in the horizontal direction can be prevented.

  As described above, in the antenna device of the second embodiment, the pressing member 22 expands the gap 53 in the first corner of the mounting hole 52, and thereby the mounting member 11 is positioned diagonally to the first corner. Since it is pressed against the inner walls of the two sides connected to the two corners, the antenna base 10 is mounted with the displacement of the mounting member 11, that is, the rotation of the antenna base 10 suppressed, as in the first embodiment. It can be temporarily held or fixed in the hole 52.

[Third Embodiment]
In the second embodiment, the pressing member 22 having a structure in which the arm portion 222 is supported only by the mounting base 221 has been described. However, the supporting structure of the pressing member 22 is not limited to the example of the second embodiment. . In the third embodiment, an antenna device in which this support structure is reinforced will be described.

FIG. 14 is a partial perspective view showing an attachment state of the pressing member 32 of the third embodiment. The pressing member 32 includes an attachment base 321, an arm 322 that protrudes in the horizontal direction from the side of the attachment base 321, and a support arm 323 that supports the arm 322. The structures of the attachment base 321 and the arm 322 are the same as the structures of the attachment base 221 and the arm 222 of the pressing member 22 of the second embodiment. The protruding portion protruding from the arm portion 322 is received in the receiving hole 202. At the end of the support arm 323, a fixture that is fixed to the mounting member 11 with a male screw 331 is provided. Since the pressing member 32 having such a structure is fixed by the male screws 331 and 332, the supporting structure of the pressing member 32, particularly the supporting structure of the arm portion 322, is more than that of the pressing member 22 of the second embodiment. It will be stubborn.

[Modification]
The embodiments of the present invention are not limited to the above embodiments. For example, in the above-described embodiment, an example in which the pressing members 12, 22, and 32 have a pair of arm portions has been described. However, what is important in achieving the object of the present invention is to suppress the rotation of the antenna base 10 by bringing the gap in which the antenna base 10 is to rotate close to zero. There may be only one part. Similarly, the number of arm portions may be three or more, and the arm portions may be arranged at equiangular intervals near the base end portion of the bolt 111.

In the above embodiment, the mounting hole 52 has a substantially rectangular shape, and the mounting member 11 on the antenna device side is also substantially similar, ie, has a substantially rectangular shape. However, the mounting hole 53 and the mounting member 11 have been described. The outer peripheral shape may be an n-corner shape (n is a natural number of 3 or more), an elliptical shape, a substantially elliptical shape, a circular shape, or a substantially circular shape. In short, any shape that can suppress the force of the mounting member 11 to rotate may be used.

In the above embodiment, the grooves 121 i, 121 j, 221 i are formed in the mounting bases 121, 221, 321 of the pressing members 12, 22, 32, and the fitting bodies 101 d, 101 e, 201 i are formed on the mounting member 11 side of the antenna base 10. , 201 j is formed, but the positional relationship between the mounting bases 121, 221, 321 can be suppressed, the relationship between the groove and the fitting body may be reversed.

  In the third embodiment, an example in which the arm portion 322 and the support arm portion 323 are integrally formed with the attachment base portion 321 has been described. However, the arm portion 322 and the support arm portion 323 are attached to the attachment base portion 321. You may comprise as an independent component.

Further, in the above embodiment, the case where the antenna base 10 is attached to the attachment hole 52 of the vehicle roof 50 has been described. However, the attachment hole 52 is formed on a mounting surface other than the vehicle roof 50 of the vehicle. Is also applicable.
The present invention can also be applied to a case where an object to be attached other than the antenna device is attached to an attachment surface other than a vehicle having an attachment hole.

DESCRIPTION OF SYMBOLS 1 ... Antenna device, 52 ... Mounting hole, 10 ... Antenna base, 11 ... Mounting member, 12, 22, 32 ... Pushing member, 112 ... Positioning guide, 121, 221 , 321 ... Mounting base, 222, 321 ... Arm part, 223 ... Projection part, 323 ... Support arm part, 121a, 121b, 221a, 221b ... Arm part, 121c ... Projection Body, 223... Projection, 121e, 121g, 221e, 221g... Locking claws 101, 201... Accommodation mechanism, 202 .. accommodation hole, 101d, 101e, 201i, 201j. , 121i, 121j, 221i... Groove.

Claims (4)

An antenna base mounted on the vehicle via a substantially rectangular mounting hole formed on the mounting surface of the vehicle;
The antenna base has an outer peripheral shape that is substantially similar to the mounting hole and protrudes in a smaller size than the mounting hole, and the mounting member is mounted from the outside to the inside of the mounting surface. By pressing the mounting member so that the gap between the inner wall of one side of the pair of opposing sides of the mounting hole and the outer periphery of the mounting member expands as the insertion proceeds when inserted into the hole A pressing member that brings the gap between the inner wall of the other side and the outer periphery of the mounting member close to zero; and
The mounting member is provided with a housing mechanism for housing the pressing member,
The pressing member includes an attachment base fixed to the accommodation mechanism, an arm extending from the attachment base toward the one side of the attachment hole, and an outward projection from the outer surface of the arm. A protrusion whose protrusion amount from the outer surface increases from the tip of the arm portion toward the attachment base, and the distance from the attachment base of the arm portion is larger than the protrusion on the outer surface of the portion. The antenna device is provided with a locking claw whose lower end portion serves as a fulcrum for bending and whose upper end portion protrudes outwardly from the protrusion . An antenna base mounted on the vehicle via a substantially rectangular mounting hole formed on the mounting surface of the vehicle;
The antenna base has an outer peripheral shape that is substantially similar to the mounting hole and protrudes in a smaller size than the mounting hole, and the mounting member is mounted from the outside to the inside of the mounting surface. A pressing member that presses the mounting member against the inner walls of the two sides connected to the corners of the mounting hole when inserted into the hole to bring the gap on the two sides close to zero ; and
The mounting member is provided with a housing mechanism for housing the pressing member,
The pressing member is positioned at a diagonal line from the mounting base, the one or a plurality of arms extending from the mounting base toward the side of the mounting hole, and the corner from the mounting base. An arm portion extending toward the first corner portion and projecting from an outer surface thereof toward the inner wall of the first corner portion, and a lower end portion of the arm portion on the outer surface of the arm portion serves as a fulcrum of bending, A locking claw having an upper end protruding larger outward than the outer surface is provided, and the arm has a protrusion whose protrusion from the outer surface increases toward the base end . Antenna device. The antenna device according to claim 2, further comprising a support arm portion for fixing the arm portion to the antenna base separately from the attachment base portion . A positioning groove is formed in one of the attachment base and the accommodation mechanism, and a fitting body for fitting in the groove is provided in the other of the attachment base and the accommodation mechanism.
The antenna device according to any one of claims 1 to 3 .

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