US20070063444A1 - Magnetic type electronic dartboard - Google Patents

Abstract

A magnetic type electronic dartboard includes a dartboard body at which darts are thrown, the dartboard body having a plurality of blocks and a winding at each of the blocks, and a magnetic zone provided at the back side of the dartboard body and providing a constant magnetic field.

Description

BACKGROUND OF THE INVENTION
• 1. Field of the Invention
• The present invention relates generally to a dartboard and more particularly, to a magnetic type electronic dartboard.
• 2. Description of the Related Art
• A conventional electronic dartboard, as shown in FIGS. 1 and 2, comprises a winding 2 embedded in the board body 1 thereof. The dart 3 for use with this structure of electronic dartboard has a magnetic point. When the magnetic point of the dart 3 is forced into the board body 1, the winding 2 is induced to produce an induction current, which is converted into a digital value, and therefore the scoring is counted. This design of electronic dartboard is functional. However, because the dart is a magnetic dart, i.e., the dart must have a magnet embedded therein or the point of the dart must be magnetized during fabrication, the manufacturing process of the dart is complicated, resulting in a high manufacturing cost.
SUMMARY OF THE INVENTION
• The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to a magnetic type electronic dartboard, which can be used with a dart that is not magnetized. To achieve this and other objects of the present invention, the magnetic type electronic dartboard comprises a dartboard body at which darts are thrown, a plurality of windings respectively mounted in a respective block at the dartboard, and a magnetic zone provided at the back side of the dartboard body and providing a constant magnetic field.
BRIEF DESCRIPTION OF THE DRAWINGS
• FIG. 1 is an elevational view of an electronic dartboard according to the prior art.
• FIG. 2 is a sectional view showing the magnetized point of a dart inserted into the electronic dartboard according to the prior art.
• FIG. 3 is an exploded view of a magnetic type electronic dartboard according to the present invention.
• FIG. 4 is a sectional view in an enlarged scale of a part of the magnetic type electronic dartboard shown in FIG. 3.
DETAILED DESCRIPTION OF THE INVENTION
• Referring to FIGS. 3 and 4, a magnetic type electronic dartboard in accordance with the present invention is shown comprising a body 10 made of sisal or foam material for receiving the dart. The body 10 is divided into a plurality of blocks 11. A respective number is marked on the border area of the body 10 corresponding to each block 11. Each block 11 is provided with a respective winding 12. The winding 12 can be embedded in the respective block 11 or mounted on the top or bottom surface of the respective block 11, and electrically connected to a processor (not shown).
• A magnetic zone 13 is provided at the back side of the body 10. The magnetic zone 13 can be formed of one single piece of magnet covered on the back side of the body 10 or a number of magnets respectively fastened to the blocks 11 at the back side, producing a constant magnetic field at the body 10.
• As indicated above, the magnetic zone 13 is provided at the back side of the body 10, producing a constant magnetic field at the body 10. The windings 12 of the blocks 11 are within the fixed magnetic field. When the ferrous (steel, iron, or their alloy) point of the dart is inserted into the body 10, the constant magnetic field is caused to change the magnetic flux, and the winding 12 at the respective block 11 is induced to produce a corresponding induction current, which is then converted by the processor into a digital value, and therefore the scoring is counted.
• According to the present invention, the magnetic type electronic dartboard can be used with any of a variety of conventional darts that have a point made of steel, iron, or their alloy without magnetization.
• Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.

Claims (3)

1. A magnetic type electronic dartboard comprising:

a dartboard body at which darts are thrown, said dartboard body having a plurality of blocks, said blocks each having a winding therein; and

a magnet fixed on the back side of the dartboard body to provide a constant magnetic field, wherein the windings are located in the constant magnetic field.

2. (canceled)

3. A magnetic type electronic dartboard comprising:

a dartboard body at which darts are thrown, said dartboard body having a plurality of blocks, said blocks each having a winding therein; and

a plurality of magnets fixed on back sides of said blocks of said dartboard body to provide a constant magnetic field, wherein the windings are located in the constant magnetic field.

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