Target block structure of electronic dartboard

Information

  • Patent Grant
  • 6481412
  • Patent Number
    6,481,412
  • Date Filed
    Wednesday, May 2, 2001
    23 years ago
  • Date Issued
    Tuesday, November 19, 2002
    22 years ago
  • Inventors
  • Examiners
    • McMahon; Marguerite
    Agents
    • Baxley; Charles E.
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)
Number Name Date Kind
4976441 Kim Dec 1990 A
5519250 Lu et al. May 1996 A
5988646 Fair Nov 1999 A
6116607 Cho Sep 2000 A
6215390 Lin Apr 2001 B1