Information
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Patent Grant
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6481412
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Patent Number
6,481,412
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Date Filed
Wednesday, May 2, 200123 years ago
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Date Issued
Tuesday, November 19, 200222 years ago
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Inventors
-
-
Examiners
Agents
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CPC
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US Classifications
Field of Search
US
- 273 371
- 273 372
- 273 373
- 273 374
- 273 375
- 273 376
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International Classifications
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Abstract
A target block structure of an electronic dartboard includes a target block made of hard material having a body whose outer portion is integrally formed with a soft cushioning structure and cushioning ribs. Thus, when the target block is hit by the dart to displace, the soft cushioning structure may reduce the noise due to friction and hitting. In addition, the bottom of the body is provided with a hard trigger column whose end portion is formed with a soft column leg. The column leg has an outside formed with an annular wall and an inside formed with a trigger point. The annular wall may be deformed by an impact force for cushioning the impact force, thereby preventing incurring noise.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an improvement of a target block structure of an electronic dartboard, and more particularly to a target block structure of an electronic dartboard, which may reduce noise when the target block is hit by the dart.
2. Description of the Related Art
A conventional target block structure of an electronic dartboard in accordance with the prior art shown in
FIG. 1
comprises a target frame
10
, a plurality of target blocks
11
, a plurality of electronic sensing members
12
, and a back plate
13
. When the target block
11
is hit by the dart
14
, the target block
11
is displaced in the target frame
10
to trigger the electronic sensing member
12
which may induce the scoring state of the dart.
However, when the target block is hit by the dart, the target block is displaced in the target frame, thereby incurring noise due to friction between the target block and the target frame. In addition, the target block is pushed by the impact force of the dart, so that the target block, the electronic sensing member, and the back plate are hit by the impact force, thereby producing noise due to hitting. Further, the target frame is provided with multiple target blocks, and a clearance is formed between the target frame and each target block for allowing sliding of the target block, so that when one target block is hit, other blocks are easily affected by the impact force of the dart to sway and vibrate, thereby incurring noise.
SUMMARY OF THE INVENTION
The present invention has arisen to mitigate and/or obviate the disadvantage of the conventional electronic dartboard.
The primary objective of the present invention is to provide a target block structure of an electronic dartboard, including a target block made of hard material having a body whose outer portion is integrally formed with a soft cushioning structure and cushioning ribs. Thus, when the target block is hit by the dart to displace, the soft cushioning structure may reduce the noise due to friction and hitting. In addition, the bottom of the body is provided with a hard trigger column whose end portion is formed with a soft column leg. The column leg has an outside formed with an annular wall and an inside formed with a trigger point. The annular wall may be deformed by an impact force for cushioning the impact force, thereby preventing incurring noise.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is a cross-sectional assembly view of a conventional electronic dartboard in accordance with the prior art;
FIG. 2
is a top plan view of a target block structure of an electronic dartboard in accordance with a first embodiment of the present invention;
FIG. 3
is a bottom plan view of the target block structure of an electronic dartboard in accordance with the first embodiment of the present invention;
FIG. 4
is a side plan view of the target block structure of an electronic dartboard in accordance with the first embodiment of the present invention;
FIG. 5
is a cross-sectional view of the target block structure of an electronic dartboard in accordance with the first embodiment of the present invention;
FIG. 6
is a schematic operational view of the target block structure of an electronic dartboard as shown in
FIG. 5
in use;
FIG. 7
is a top plan view of a target block structure of an electronic dartboard in accordance with another embodiment of the present invention;
FIG. 8
is a top plan view of a target block structure of an electronic dartboard in accordance with another embodiment of the present invention;
FIG. 9
is a top plan view of a target block structure of an electronic dartboard in accordance with another embodiment of the present invention; and
FIG. 10
is a cross-sectional view of a target block structure of an electronic dartboard in accordance with a second embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawings and initially to
FIGS. 2-5
, a target block structure of an electronic dartboard in accordance with a first embodiment of the present invention comprises a target frame
20
, a plurality of target blocks
30
, a plurality of electronic sensing members
40
, and a back plate
50
.
The target block
30
is mounted in the target frame
20
, and includes a body
31
which may be formed by hard plastic material, such as PE plastic, for increasing the structural strength of the target block
30
. The front face of the body
31
is formed with multiple dart holes
311
for receiving the darts. The bottom of the body
31
is protruded with multiple trigger columns
32
made of hard material that may co-operate with the electronic sensing member
40
of the electronic dartboard to perform a trigger action when the target block
30
is hit.
When the body is formed by the plastic material and is not hardened completely, a soft material is coated on the peripheral wall of the body
31
to form a soft cushioning structure
33
that is integrally formed with the target block
30
. The soft cushioning structure
33
includes a plurality of longitudinal cushioning ribs
331
that are directly formed on the side wall of the target block
30
to mate with the longitudinal wall face of the target frame
20
. The end portion of the longitudinal cushioning rib
331
protrudes from the front face of the body
31
of the target block
30
. The end portion of the trigger column
32
of the target block
30
is formed with a soft column leg
34
which has an outside formed with an annular wall
341
, and an inside formed with a trigger point
342
.
After the target block
30
is fitted in the target frame
20
, each of the cushioning ribs
331
of the soft cushioning structure
33
contacts the target frame
20
, the protruding end portion of the cushioning rib
331
contacts the rib of the target frame
20
, and the column leg
34
of the target block
30
may contact the electronic sensing member
40
as shown in FIG.
5
.
The soft cushioning structure
33
may include a cushioning wall
332
which is directly formed on the side wall of the target block
30
to mate with the side wall face of the target frame
20
.
Referring to
FIG. 6
, when the target block
30
is hit by the dart
60
, the target block
30
slides backward by the impact force of the dart
60
. During the displacement process of the target block
30
, the cushioning rib
331
of the soft cushioning structure
33
contacts the inner wall of the target frame
20
, thereby decreasing the contact friction and the impact noise between the target block
30
and the target frame
20
by means of the soft feature of the cushioning ribs
331
of the soft cushioning structure
33
. The target block
30
may slide backward from the position as shown in
FIG. 5
to the position as shown in
FIG. 6
where the column leg
34
of the trigger column
32
of the target block
30
contacts the electronic sensing member
40
to induce and operate. When the annular wall
341
of the soft column leg
34
contacts the electronic sensing member
40
, the annular wall
341
may be deformed (expanded outward) by the impact, thereby reducing the impact force, so that when the trigger point
342
in the annular wall
341
contacts the electronic sensing member
40
, the impact force has been greatly decreased, thereby preventing incurring the noise.
Accordingly, in accordance with the present invention, the soft cushioning structure
33
is integrally formed on the outside of the hard body
31
of the target block
30
, so that when the target block
30
is fitted with the target frame
20
, the impact force and the friction noise may be greatly reduced, without having to change the original dartboard structure and without having to increase the fitting parts. In addition, the soft cushioning structure
33
, the cushioning ribs
331
, and the cushioning wall
332
may be available to different kinds of target blocks. For example, the target block
30
may have a sector shape as shown in
FIG. 7
, have a crescent shape as shown in
FIG. 8
, or may have an annular shape as shown in FIG.
9
.
Referring to
FIG. 10
, in accordance with a second embodiment of the present invention, the soft cushioning structure
33
is directly formed on the peripheral wall of the target frame
20
, thereby forming cushioning bars
333
to mate with the side wall of the target block
30
. Thus, when the target block
30
is hit by the dart to slide in the target frame
20
, the soft cushioning structure
33
formed on the target frame
20
may efficiently decrease the impact force and the friction noise.
While the preferred embodiment of the present invention has been shown and described, it will be apparent to those skilled in the art that various modifications may be made in the embodiment without departing from the spirit of the present invention. Such modifications are all within the scope of the present invention.
Claims
- 1. A target block structure of an electronic dartboard, comprising:a target block, having a body for shooting of a dart, said body having a back face from which protrudes a trigger column; and a soft cushioning structure, directly formed on an outer portion of said target block, to be integrally formed with said target block; wherein, said target block having said soft cushioning structure is placed in a target frame, thereby achieving vibration cushioning and reducing effects.
- 2. The target block structure of an electronic dartboard in accordance with claim 1, wherein said soft cushioning structure includes a plurality of longitudinal cushioning ribs that are directly formed on a side wall of said target block, to mate with a longitudinal wall face of said target frame.
- 3. The target block structure of an electronic dartboard in accordance with claim 2, wherein said longitudinal cushioning rib has an end portion protruding from an end face of said body of said target block, to mate with a rib of said target frame.
- 4. The target block structure of an electronic dartboard in accordance with claim 1, wherein said soft cushioning structure includes a cushioning wall which is directly formed on a side wall of said target block to mate with a side wall face of said target frame.
- 5. The target block structure of an electronic dartboard in accordance with claim 1, wherein said trigger column has an end portion formed with a soft column leg for providing a cushioning effect to said target block when said target block is displaced.
- 6. The target block structure of an electronic dartboard in accordance with claim 5, wherein said column leg has an outside formed with an annular wall that may be deformed by an impact force for cushioning said impact force, and an inside formed with a trigger point that may be operated by contact.
- 7. The target block structure of an electronic dartboard in accordance with claim 1, wherein said soft cushioning structure is directly formed on a peripheral wall of said target frame, thereby forming cushioning bars to mate with a side wall of said target block.
US Referenced Citations (5)