JP2000137067A - Gps receiving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability at manufacturing and make the thickness of the device thin in a receiving device having an attracting means by magnetism by providing an opening part in the receiving means of a receiving antenna, and fitting the attracting means in the opening part. SOLUTION: This GPS receiving device is provided with a containing means 20 containing an antenna 30 therein and fitted and fixed with a magnetic attracting means 10 such as a magnet. An opening part 22 penetrating the bottom face is provided on the bottom part 20a of the containing means, on the opening part 22 projections 24 projecting in the radial direction are formed on the outer face side of the containing means 20, and the magnetic attracting means is formed into construction in which parts corresponding to the projections 24 are recessed, so that it is fitted in the opening part 22 and not slipped off. By providing a pliable sheet 35 having waterproofing between the magnetic attracting means 10 and the antenna 30, rain water or the like can be prevented from invading in the containing means 20. It can be constituted so that a shield case made of iron is provided instead of the pliable sheet 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a GPS (Global Positioning System) receiver used for a car navigation system and the like.

[0002]

2. Description of the Related Art As a navigation system for a mobile object such as an automobile or a ship, a device using a GPS for receiving a radio wave output from an artificial satellite and measuring the position of the mobile object is used. A GPS device that measures the position using the GPS receives radio waves from three or more satellites, and calculates distance data and altitude data based on the radio waves from the plurality of satellites to thereby determine the position of the mobile object. This is to detect the position.

[0003] As a method of receiving radio waves from this artificial satellite, reception is performed using an antenna, and a GPS receiver incorporating the antenna is generally used. In this GPS receiver, in order to maintain a good reception state of radio waves from an artificial satellite, the receiving surface of the antenna is arranged toward the zenith side where the artificial satellite is located, so that good antenna directivity can be obtained. It is generally desirable to use a GPS receiver at a predetermined position inside or outside a moving object for reception.

[0004] As a method of fixing the GPS receiver, a method of fixing using an adhesive, an adhesive tape, a screw, or the like, or a magnetic attraction means such as a magnet as described in JP-A-8-78927, for example. A method of detachably fixing using a method has been performed. As a method of providing the magnetic attraction means in the GPS receiver when fixing using the magnetic attraction means, as shown in FIG. 4, a concave portion 29 is formed on the outer surface of the storage means 20 for storing the antenna 30 therein. A method of attaching the magnetic attraction means 10 to the recess 29 using an adhesive tape 50 or the like, or a method of attaching a sheet-like magnetic attraction means to the outer surface of the storage means using an adhesive tape or the like are performed. Have been done.

However, when manufacturing a GPS receiver by such a method of attaching the magnetic attraction means, the number of steps required to attach the magnetic attraction means is required. There is a problem that the thickness of the GPS receiver is increased. Therefore, there is a demand for a GPS receiver that is excellent in workability in manufacturing and has a small thickness.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a magnetic attraction means capable of being attracted by magnetism and a signal transmitted from an artificial satellite. A GPS receiver comprising: an antenna for receiving a GPS radio wave; and a storage unit for engaging the magnetic attraction unit, wherein the GPS receiver has excellent workability at the time of manufacture and a small thickness. A receiving device is provided.

[0007]

According to a first aspect of the present invention, there is provided a GPS receiving apparatus comprising: a magnetic attraction means capable of attracting by magnetism; and an antenna for receiving a GPS radio wave transmitted from an artificial satellite. A GPS receiver comprising: a storage means for storing and engaging the magnetic attraction means, wherein the storage means includes an opening having a diametrically-projecting projection on an outer surface side thereof, and the opening has a magnetic attraction. The means is fitted and fixed.

In the GPS receiver according to a second aspect of the present invention, in the GPS receiver according to the first aspect, the magnetic attraction means is in pressure contact with a waterproof flexible sheet, and the flexible sheet is , And is in pressure contact with the antenna.

A GPS receiver according to a third aspect of the present invention is the GPS receiver according to the first aspect, wherein the magnetic attraction means is provided in contact with an iron shield case supporting the antenna. I do.

[0010] According to a fourth aspect of the present invention, in the GPS receiver according to any one of the first to third aspects, the thickness of the magnetic attraction means is the same as the depth of the opening. It is characterized by the following.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A GPS receiver according to the present invention will be described with reference to the drawings. 1A and 1B are diagrams illustrating an embodiment of a GPS receiver according to the present invention. FIG. 1A is a sectional view, and FIG. 1B is an exploded sectional view. FIG. 2 is a diagram illustrating a modification of the embodiment of the GPS receiver according to the present invention, and FIG. 3 is a cross-sectional view illustrating another embodiment of the GPS receiver according to the present invention. is there.

One embodiment of a GPS receiving apparatus according to the present invention, as shown in FIG.
This is a GPS receiver including an antenna 30 for receiving S radio waves therein, and a storage unit 20 in which a magnetic attraction unit 10 capable of being attracted by magnetism is inserted and fixed.

The storage means 20 is provided at the bottom 20 of the storage means.
a and the storage means lid 20b are adhered and formed. The storage means bottom 20a is provided with an opening 22 penetrating the bottom surface, and the magnetic attraction means 10 is inserted into the opening 22. The opening 22
A protrusion 24 projecting in the diameter direction is formed on the outer surface side of the storage means 20, and the magnetic attraction means 10 is formed such that a portion corresponding to the protrusion 24 is formed in a concave shape so that the opening 22 is formed. The magnetic attraction means 10 is inserted into the device so that it does not fall off.

Therefore, the magnetic attraction means 10 is
Can be fixed to the storage means 20 only by inserting the
It is an S receiving device. In addition, since there is no material such as plastic forming the storage means 20 in the portion where the magnetic attraction means 10 is disposed, an adhesive tape or the like for attaching the magnetic attraction means 10 to the storage means 20 becomes unnecessary. Therefore, the GPS receiver has a small thickness.

The shape of the opening 22 is not particularly limited.
The opening 22 viewed from the side b is, for example, as shown in FIG.
As shown in FIGS. 2 (c) and 2 (d), the shape may be circular. Further, the projection 24 provided on the opening 22 may be provided on the outer surface side of the storage means 20 so as to protrude in the diametrical direction of the opening 22, for example, as shown in FIGS. 2 (a) and 2 (c). Alternatively, it may be formed over the entire circumference of the opening 22, or may be formed on a part of the opening 22, as shown in FIGS. 2 (b) and 2 (d). In addition, as shown in FIG. 2D, when the opening 22 is formed in a square shape and the projection 24 is provided on the opposite side,
Processing for recessing a portion of the magnetic attraction means 10 corresponding to the projection 24 is preferred because it is easy.

The cross section of the projection 24 is not particularly limited, such as a triangle as shown in FIG. 1 or a square as shown in FIG. 3, but if the projection 24 has a triangular cross section, the magnetic attraction means The process of denting the portion corresponding to the projection 24 of 10 is easy and preferable.

The thickness of the magnetic attraction means 10 of the GPS receiver shown in FIG. 1 is the same as the depth of the opening 22. When the GPS receiver is fixed to a moving body,
Both the storage means 20 and the magnetic attraction means 10 come into contact with the moving body so that stable fixing can be performed. In addition,
It is preferable that the thickness of the magnetic attraction means 10 is made slightly thicker than the depth of the opening 22 so that the magnetic attraction means 10 protrudes slightly from the opening 22 because the fixing force to the moving body is improved.

A flexible sheet 35 having a waterproof property is provided between the magnetic attraction means 10 and the antenna 30. When the storage means bottom 20a and the storage means lid 20b are adhered to each other, the antenna 30 is used. Also, the magnetic attraction means 10 and the flexible sheet 35 are pressed against each other by being pressed against the storage means bottom 20a side, and the flexible sheet 35 and the antenna 30 are pressed against each other. Therefore, the storage means bottom 2
It is possible to prevent rainwater or the like from entering the inside of the storage means 20 only by bonding the storage means 20a and the storage means cover 20b, and the GPS receiver is excellent in workability particularly in manufacturing. .

As shown in FIG. 3, the flexible sheet 35 is formed by covering the opening 22 with a shield case 34 supporting a printed wiring board 33 on which the antenna 30 is mounted.
May not be provided. This shield case 34
When the shield case 34 is made of iron, it is preferable that the shield case 34 be made of iron, since the shield case 34 acts as a yoke of the magnetic attraction means 10, so that the magnetic attraction force can be increased.

The magnetic attraction means 10 used in the present invention is not particularly limited as long as it can be attracted by magnetism. For example, a magnet, resin, rubber, or the like and a magnetic material are mixed to form a sheet. Magnet sheet and the like.

The antenna 30 used in the present invention is not particularly limited as long as it can receive GPS radio waves transmitted from artificial satellites.
For example, a flat type manufactured by adding a metal to the surface of an organic / inorganic insulating plate, a type formed by bending a metal plate, a parabolic type, and the like can be used. The antenna 30 manufactured by applying metal to the surface of the ceramic plate
The use of is preferable because the ceramic has a high dielectric constant, so that the antenna 30 can be reduced in size and the GPS receiver can be reduced in size.

[0022]

According to the GPS receiver of the present invention, the storage means is provided with an opening having a projection projecting in the diameter direction on the outer surface side thereof, and the magnetic attraction means is inserted into the opening and fixed. Therefore, the workability at the time of manufacturing is excellent and the GPS receiver has a small thickness.

The GPS receiver according to the second aspect of the present invention is capable of preventing rainwater or the like from entering the storage means by an easy method, and is particularly excellent in workability in manufacturing. Become a receiving device.

The GPS receiving apparatus according to the third aspect of the present invention is a GPS receiving apparatus having an excellent attraction force in addition to the above effects.

The GPS receiver according to a fourth aspect of the present invention is a GPS receiver capable of stably fixing when the GPS receiver is fixed to a mobile body, in addition to the above-described effects.

[Brief description of the drawings]

1A and 1B are diagrams illustrating an embodiment of a GPS receiving apparatus according to the present invention, wherein FIG. 1A is a cross-sectional view and FIG. 1B is an exploded cross-sectional view.

FIG. 2 is a diagram illustrating a modification of the embodiment of the GPS receiving apparatus according to the present invention.

FIG. 3 is a sectional view illustrating another embodiment of the GPS receiver according to the present invention.

FIG. 4 is a cross-sectional view illustrating a conventional GPS receiver.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Magnetic attraction means 20 Storage means 20a Storage means bottom 20b Storage means lid 22 Opening 24 Projection 30 Antenna 33 Printed wiring board 34 Shield case 35 Flexible sheet 50 Adhesive tape

Claims (4)

[Claims] A magnetic attraction means capable of being attracted by magnetism;
A GPS receiving device comprising: an antenna that receives a GPS radio wave transmitted from an artificial satellite; and a housing that engages the magnetic attraction unit.
A GPS receiver, characterized in that the storage means has an opening having a projection projecting in the diameter direction on the outer surface side thereof, and the magnetic attraction means is inserted and fixed in the opening. 2. The GPS receiver according to claim 1, wherein the magnetic attraction means is in pressure contact with a flexible sheet having waterproofness, and the flexible sheet is in pressure contact with an antenna. 3. The GPS receiver according to claim 1, wherein the magnetic attraction means is provided in contact with an iron shield case supporting the antenna. 4. The magnetic attraction means according to claim 1, wherein the thickness of the magnetic attraction means is the same as the depth of the opening.
The GPS receiver according to any one of the above.