Knife net electronic target

Abstract

The invention discloses a knife net electronic target, and relates to the technical field of dartboards, the knife net electronic target mainly comprises a target body frame, a target body embedded in the target body frame, a metal knife net and a bull eye which are embedded in the target body, and a number ring fixed outside an invalid partition of the target body, the target body is internally provided with partition induction lines, and the partition induction lines are arranged in the target body. The partition induction lines are fixed below the metal knife net but are not in contact with the metal knife net at all, leads of the partition induction lines are arranged below an annular diameter or a longitudinal diameter of the metal knife net, perspective observation is performed from a vertical target surface view angle, and the metal knife net completely and correspondingly covers the partition induction lines. On the premise that the magnetic induction effect of the partition induction lines is not affected, the induction lines are effectively protected, and damage to the induction lines caused by dart throwing is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of dartboards, and in particular to a knife net electronic target. Background Art

[0002] Darts is a sport that combines entertainment, fitness and competition, and is widely popular in Europe and the United States. With the popularity of this activity, the number of darts enthusiasts in China is also increasing. Darts has now been included in domestic sports events, and international darts invitational tournaments have been held many times.

[0003] The electronic targets on the market are plastic electronic targets, which are limited to the target surface for plastic dart needles, and are called soft dart targets. The rules of the international dart competition are hard dart competitions. The target body is made of sisal fiber and is used for the target surface for steel needle darts. It is referred to as hemp target. The products are divided into three types: ordinary type: round wire target, mid-range type: triangular net target, and high-end type: knife net target. In the past ten years, many countries and regions have been developing steel needle electronic targets. For example, some countries use the working principle of plastic electronic targets, and the partition signal recognition uses a membrane press switch. The impact force of the dart throw prompts the partition fiber block contact to press the membrane switch to report the score; but the fiber block absorbs air humidity in the humid season, which will cause the fiber block to expand, or the dart will cause the fiber block to expand again when the partition is projected, which will cause the partition block to be blocked and unable to report the score normally. Domestic research and development of electronic targets mainly adopts the method of eddy current sensing identification partition, which is a triangular mesh electronic target. The triangular mesh on the target surface partition is fixed to the target body by 20 U-shaped nails. The U-shaped nails are metallic materials that hinder signal recognition. When the darts are thrown at the parallel position of the U-shaped nails, it is easy to cause the score not to be displayed. At the same time, some countries and regions use the camera recognition principle in the development of electronic targets because the target surface partition isolation net is too thin to realize the knife net partition signal recognition. A circular EVA target body ring is put on the periphery of the ordinary dart target. Three cameras extend from the target body ring to the target body. The camera takes a photo to identify the area where the dart is thrown and transmits the score signal to the electronic system. In dart competitions, three darts are thrown in each round. The darts thrown to the target surface are prone to parallel angles. Because the darts overlap in parallel, it constitutes a blind spot for taking photos and cannot be recognized, which may lead to the problem of underreporting the dart position and misreporting the score.

[0004] The utility model patent CN213932233U authorized on August 10, 2021 discloses an electronic target based on an induction coil. An induction coil is wound around the isolation net / target block of each partition, and electromagnetic induction scoring based on the energized coil is achieved through cooperation with the circuit. This patent fixes the induction coil in the groove at the bottom of the partition isolation net and the bull's eye ring by injection molding or glues it to the bottom of the partition isolation net by glue to prevent it from being displaced due to the fluidity of the target fiber, thereby ensuring the stability of the scoring results. However, the problem with this solution is that the induction coil is placed in the metal knife net. Although the solution can prevent the displacement of the induction coil due to the fluidity of the target fiber, there is still the problem of missing scores in actual applications. Summary of the invention

[0005] In view of the technical defects of the existing electronic targets, the present invention provides a knife net electronic target.

[0006] A knife net electronic target mainly comprises a target body frame, a target body embedded in the target body frame, a metal knife net and a bull's eye embedded in the target body, and a digital circle fixed outside an invalid partition of the target body.

[0007] The target body is provided with 82 partitioned induction lines, corresponding to the 82 scoring zones of the target body respectively. The partitioned induction lines in the target body are fixed below the metal knife net but do not contact the metal knife net (to avoid being affected by the shielding of the metal knife net). Specifically, the circular line of the partitioned induction line corresponds to the circular warp of the metal knife net, the longitudinal line of the partitioned induction line corresponds to the longitudinal diameter of the metal knife net, and the 50 partitioned induction lines correspond to the bull's eye. The lead of the partitioned induction line is arranged below the longitudinal circular warp or longitudinal warp of the metal knife net, and is connected to the circuit board through the threading hole on the bottom plate of the target body frame. From the perspective of vertical target surface, the metal knife net or bull's eye completely covers the partitioned induction line.

[0008] Furthermore, the partitioned induction wires are embedded in the target body by cutting grooves therein, and the depth of the grooves is greater than the sum of the depth of the metal knife net embedded in the target body and the depth required to accommodate the partitioned induction wires.

[0009] Furthermore, grooves are arranged on both sides of the annular diameter and the longitudinal diameter of the electronic target metal knife net, and adhesive is filled into the grooves before the metal knife net is pressed into the target body.

[0010] Furthermore, a protection net for partitioning induction lines is provided inside the target body, and the protection net has the same structure as the metal knife net, specifically, the annular diameter and longitudinal diameter of the protection net correspond to the annular diameter and longitudinal diameter of the metal knife net, respectively, and the protection net is located between the metal knife net and the bottom plate of the target body frame. From a perspective vertical to the target surface, the metal knife net also completely covers the protection net.

[0011] The protective net is provided with a wire slot for accommodating the partition induction wire, and the lead wire of the partition induction wire passes through the wire hole on the bottom plate and is connected to the circuit board behind the target frame. Of course, from the perspective of vertical target surface, the metal knife net also completely covers the lead hole.

[0012] Furthermore, the target frame is composed of a base plate and a fence fastened around the target, and the base plate is provided with 50-partition lead holes, 25-partition lead holes, 3-fold partition lead holes, 2-fold partition lead holes, and local partition lead holes.

[0013] Furthermore, a side of the bottom plate facing away from the target body is provided with a plurality of concentrically distributed annular reinforcing ribs and a plurality of equally spaced radial reinforcing ribs; a side of the bottom plate facing away from the target body is provided with a vibration sensor.

[0014] Furthermore, the number ring is fixed on the target body by a plurality of flattening adhesives, a number ring slot is provided on the outer edge of the flattening adhesive, a threaded hole for inserting a fastening screw is provided on the flattening adhesive, and the flattening adhesive is fixed on the target body by the screws.

[0015] Furthermore, a signal light through hole is provided at the center of one of the flattened rubbers, in which a network connection indicating signal light is installed; and a round hole magnet for magnetizing the dart is built into the center of one of the flattened rubbers.

[0016] Beneficial effects of the present invention:

[0017] 1. The root cause of the problem of missed scoring in the existing knife net electronic target is clarified, and the partition induction line is fixed under the metal knife net, thereby avoiding the problem of metal fixing claws shielding the magnetic induction signal, so that there is no problem of missed scoring;

[0018] 2. The partitioned induction wire is protected by the target body and the knife net or protective net, so it can be stably and permanently fixed inside the target body, thus increasing the service life of the electronic target;

[0019] 3. The metal knife net is provided with grooves, which, on the one hand, make the knife net and the target body more closely combined during the bonding process, and improve the connection strength between the knife net and the target body; on the other hand, it can block and protect the darts shot into the edge of the knife net of the target body, and can effectively prevent the darts from being inserted obliquely into the target body and causing damage to the partition induction line at the bottom of the target body;

[0020] 4. The arc-shaped reinforcement ribs and radial reinforcement ribs on the bottom plate can effectively prevent the bottom plate from deforming under the impact force of the dart, thereby improving the structural stability of the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure after splitting of the present invention.

[0024] Figure 3 This is a schematic diagram of the second viewing angle structure after the present invention is split.

[0025] Figure 4 It is a schematic diagram of the knife net and protection net structure of the present invention.

[0026] Figure 5 It is a schematic diagram of the connection between the knife net and the protection net of the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the protection net of the present invention.

[0028] Figure 7 For the present invention Figure 4 Enlarged structural diagram at A in the middle.

[0029] Figure 8 For the present invention Figure 4 Enlarged structural diagram at B in the middle.

[0030] Fig. 9 Schematic diagram of four flattening rubber structures of the present invention.

[0031] Fig.10 It is a schematic diagram of the bull's eye structure of the present invention.

[0032] Fig.11 The figure is a schematic diagram of the structure of the bull's eye ring after being cut open.

[0033] In the figure: 1. target plate; 2. knife net; 21. groove; 3. protection net; 31. wire groove; 4. lead hole; 5. target frame; 501. bottom plate; 502. steel ring; 503. back cover; 51. arc-shaped reinforcement rib; 52. radial reinforcement rib; 6. flattening glue; 61. screw hole; 62. number ring slot; 7. bull's eye; 71. bull's eye ring; 72. sharp claw; 8. round hole magnet; 9. signal light. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] After research and analysis, the reason why the utility model patent CN213932233U still has the problem of missing points in actual application is that the partition isolation net and the bull's eye are made of metal, and the induction line is arranged inside or glued to the bottom by glue, which will cause the problem of magnetic induction signal and shielding. Based on this discovery, the present invention fixes the partition induction line under the metal knife net. The knife net with effective partition has no metal claws and does not hinder the transverse magnetic field. When the dart needle is put into the target, the transverse magnetic wave recognizes the position of the dart needle and automatically transmits the signal position and scores.

[0036] Example 1

[0037] A knife net electronic target, such as Figure 1-3 As shown, it mainly includes a target frame 5, a target 1 embedded in the target frame 5, a metal knife net 2 and a bull's eye 7 embedded in the fiber layer 1, and a number circle fixed outside the invalid partition of the target 1, and a partition induction line is set in the target 1. How to set the partition induction line to achieve the scoring effect belongs to the prior art and will not be repeated here. The target in this embodiment is preferably a fiber target, especially a high-quality hemp.

[0038] In this embodiment, the partition sensing wire is embedded by making grooves on the target body 1, and the groove depth is greater than the sum of the depth of the metal knife net 2 embedded in the target body and the depth required to accommodate the partition sensing wire. From a perspective perpendicular to the target surface, the metal knife net 2 completely covers the partition sensing wire, firstly to ensure normal partition sensing, and secondly to protect the partition sensing wire.

[0039] The manufacturing process of the relevant electronic target is to first open a groove of a predetermined depth on the target body 1, and then lay the partition induction line therein, and ensure that the metal knife net does not contact the partition induction line after being placed, that is, there is a gap between the bottom surface of the metal knife net and the partition induction line. Since the fiber target body has a certain fluidity, the gap will be filled by the fiber, so that a fixed structure is formed between the partition induction line, the target body, and the metal knife net.

[0040] In order to prevent the dart needle from being inserted obliquely into the target body 1 close to the knife net and damaging the partition induction line, grooves 21 are provided on both sides of the annular diameter and the longitudinal diameter of the metal knife net 2. Figure 6Before the metal knife net 2 is pressed into the target body 1, an adhesive is filled into the groove 21. In this way, not only the stability of the knife net fixation can be improved, but the groove 21 can also prevent the dart needle from further sliding into the target body 1 and damaging the partition induction line.

[0041] Example 2

[0042] Different from Example 1, this embodiment provides a non-metallic protective net 3 inside the target body 1. The protective net 3 has the same structure as the metal knife net 2 and is located between the metal knife net 2 and the bottom plate 501 of the target body frame 5. From a perspective perpendicular to the target surface, the metal knife net 2 completely covers the protective net 3.

[0043] The protection net 3 is provided with a wire slot 31 for accommodating the partition induction wire. Figure 6 As shown, the lead wires of the partition induction wires pass through the threading holes 4 on the bottom plate 501, are connected to the circuit board behind the target frame 5, and are then closed by the rear cover 503. From a perspective perpendicular to the target surface, the metal knife net 2 also completely covers the threading holes 4.

[0044] The wire groove 31 can be opened toward the side of the bottom plate 501 and then directly pass through the threading hole 4 downward; or it can be opened toward the side of the metal knife net 2 and then open a lead hole opposite to the threading hole 4 toward the side of the bottom plate 501 for the lead wire of the partition induction wire to pass through. The advantage of the latter is that it is easier to control the partition induction wire during the process of placing the protective net into the target body to prevent it from shifting during the extrusion process of embedding into the target body.

[0045] In actual use, the protective net can be made of plastic or other polymer materials, which can protect the partition induction line without shielding the magnetic induction signal, thus ensuring the accuracy of scoring each dart; however, such materials are not as hard as metal materials, and cannot withstand the impact of darts for a long time, nor can they protect the partition induction line well. Therefore, in this embodiment, the protective net is set between the metal knife net and the bottom plate of the target frame, so that the metal knife net completely covers the protective net, which does not affect the dart feeding of the target, and at the same time protects the partition induction line, avoids the metal knife net shielding the magnetic induction signal.

[0046] When the player throws the dart, it must penetrate the target to a certain depth so that it can stay on the target and not fall off. This depth must exceed the depth of the metal knife net extending into the target. Therefore, the dart needle inserted into the target can be sensed by the partition sensing line located inside the protective net and accurately scored.

[0047] In this embodiment, a vibration sensor is provided on the side of the bottom plate 501 facing away from the target body, which is used to identify the number of darts thrown by the dart player. When the dart is thrown onto the target surface, the target body vibrates, and the vibration sensor transmits the signal to the electronic system. When the dart is thrown into an invalid partition or misses the dart, the vibration sensor can also transmit the signal to the APP or the electronic system, and the dart is recorded as 0 points.

[0048] Example 3

[0049] Due to the obstruction of the protective net, the metal knife net cannot extend the fixed claws of the target body within the effective partition. Based on Example 2, this embodiment provides the following two reinforcement solutions for the metal knife net.

[0050] First, the radial diameter extends twice the outer diameter of the partition, and the fixed claws extend toward the target body in the invalid partition. Since the radial diameter of the early dartboards all extend twice the outer diameter of the partition, and the fixed claws extend toward the target body in the invalid partition, please refer to the description of the existing knife net in the invention patent CN204461221U, which will not be repeated here.

[0051] Second, metal knife net reference Figure 5 , Figure 6 As shown, it is composed of 4 annular diameters and 20 radial diameters connected in an interlaced manner; the 4 annular diameters are respectively 3 times the inner diameter of the partition, 3 times the outer diameter of the partition, 2 times the inner diameter of the partition, and 2 times the outer diameter of the partition, and one end of each radial diameter is fixedly connected to the outer diameter of the 2 partition, and the other extends to the 25 partition. In short, the radial diameter does not extend out of the outer diameter of the 2 partition, and there is no fixed claw extending to the target body inside the knife net.

[0052] On this basis, in order to improve the stability of the knife net fixation, grooves 21 are provided near the protective net 3 on both sides of the annular diameter and the longitudinal diameter, referring to Figure 6 As shown, before the metal knife net 2 is pressed into the target body 1, adhesive is filled into the groove 21, so as to achieve seamless bonding and fixation of the knife net and the target body.

[0053] This solution not only avoids the influence of the existence of the fixed claws in the effective partition on the magnetic induction signal, but also ensures the stability of the knife net, so it is the preferred solution of the present invention.

[0054] Example 4

[0055] The target body is mainly formed into a round cake shape by squeezing hemp fiber, and then placed in the target body frame. The target body frame restricts the target body to maintain the round cake shape. The target body frame is composed of a bottom plate 501 and a fence 502 fastened around the target body. The bottom plate 501 is provided with 50-partition lead holes, 25-partition lead holes, 3-fold partition lead holes, 2-fold partition lead holes, and local partition lead holes.

[0056] Of course, the target body also has a large reaction force on the target body frame. In order to ensure the stability of the target body frame, the bottom plate 501 is integrally injection molded on the basis of embodiment 1 or 2. As a preferred solution, a plurality of concentrically distributed annular reinforcing ribs 51 and a plurality of equally spaced radial reinforcing ribs 52 are arranged on the side of the bottom plate 501 facing away from the target body, such as Figure 2 As shown, a reinforcement rib array similar to a knife net structure is formed, thereby preventing the target from bulging toward the bottom plate side under the impact of long-term darts. The enclosure 502 can be a steel ring, or can be integrally injection-molded with the bottom plate 501.

[0057] The combination of the annular reinforcement ribs 51 and the radial reinforcement ribs 52 can improve the structural strength of the target frame 5, effectively reduce the probability of deformation of the target under the impact force of the dart, and also protect the circuit board arranged on the back thereof.

[0058] Example 5

[0059] Based on Example 1 or 2, in this embodiment, the digital ring is fixed on the target body by a plurality of flattened glues 6. Figure 7 As shown, the flattening rubber 6 is provided with a threaded hole 61 for inserting a fastening screw, and the flattening rubber 6 is fixed to the target body 1 by means of the screw. The outer edge of the flattening rubber is provided with a number ring slot 62, and the number ring is inserted into the slot of the flattening rubber and is limited between the flattening rubber and the target body, thereby achieving fixation.

[0060] A signal light through hole is arranged at the center of one of the plurality of flattened rubbers, in which a signal light 9 for indicating the dart hit is installed; and a circular hole magnet 8 for magnetizing the dart is built in the center of another flattened rubber.

[0061] Example 6

[0062] The inside of the bull's eye is divided into 50 zones, and dart players often choose to shoot in this zone to obtain the qualification for scoring. In this embodiment, based on the first or second embodiment, the bull's eye 7 includes a bull's eye ring 71 and a sharp claw 72 extending from the lower end of the bull's eye ring 71. Figure 8 , Fig. 9 The outer wall of the bull's eye ring 71 is perpendicular to the target surface, and the inner wall thereof has an inward slope to form an inner ramp structure; it is assumed that one end of the bull's eye ring 71 connected to the sharp claw 72 is the lower opening, and the other end is the upper opening, then the inner diameter of the upper opening is larger than the lower opening.

[0063] Firstly, the outer wall of the bull's eye ring is perpendicular to the target surface, and only the inner wall forms an inward slope, which reduces the area of ​​the target surface occupied by the bull's eye, thereby reducing the probability of the dart needle hitting the bull's eye and falling out; secondly, the inner wall of the bull's eye ring has an inward slope, so that the inner diameter of the upper opening of the bull's eye ring is larger than the inner diameter of the lower opening, which can avoid the probability of collision between the dart and the bull's eye ring to a certain extent, making the probability of the dart needle hitting the 50-zone greater; finally, when the dart is thrown to the upper opening of the bull's eye ring at a certain angle, the impact force of the dart will cause the dart needle to slide into the 50-zone along the inner slope, thereby improving the score.

[0064] In this process, since the inner ramp is located on the inner side of the bull's eye ring and the thickness of the upper opening is smaller than that of the lower opening, the collision between the dart and the bull's eye ring can be effectively avoided, and the probability of the dart entering the partition of the target plate is increased. Improving the tightness of the connection between the dart and the target body effectively prevents the dart from slipping off the target body, ensuring the effectiveness of dart projection and the normal use of darts, which helps players get high scores.

[0065] Regarding the setting of the 50-zone induction line, the lower mouth of the bull's eye ring is parallel to the step surface, and adhesive is placed in the ring wall to press on the 50-zone induction line or 2-3 fixed claws are set on the outer edge of the ring step surface. The fixed claws go deep into the target body, and the step surface of the inner ring of the bull's eye is pressed on the 50-zone induction line, thereby protecting the 50-zone coil from damage by the dart needle.

[0066] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A knife net electronic target, mainly comprising a target frame (5), a target (1) embedded in the target frame (5), a metal knife net (2) and a bull's eye (7) embedded in the target (1), and a digital ring fixed outside an invalid partition of the target (1), wherein a partition induction line is arranged in the target (1), characterized in that: The partition sensing line is fixed below the metal knife net (2) but is completely out of contact with the metal knife net (2); the circular line of the partition sensing line corresponds to the circular diameter of the metal knife net; the longitudinal line of the partition sensing line corresponds to the longitudinal diameter of the metal knife net; the 50 partition circular line corresponds to the bull's eye; the lead of the partition sensing line is arranged below the longitudinal circular diameter or longitudinal diameter of the metal knife net and is connected to the circuit board through the threading hole (4) on the bottom plate (501) of the target frame (5); when observed from a perspective perpendicular to the target surface, the metal knife net or the bull's eye (2) completely corresponds to, covers and protects the partition sensing line.

2. The knife net electronic target according to claim 1, characterized in that: The partition induction wire is embedded in the target body (1) by means of a groove, and the depth of the partition wire groove is greater than the sum of the depth of the knife net (2) embedded in the target body and the depth required to accommodate the partition induction wire.

3. The knife net electronic target according to claim 2, characterized in that: Grooves (21) are provided on both sides of the annular diameter and the longitudinal diameter of the metal knife net (2), and before the metal knife net (2) is pressed into the target body (1), an adhesive is filled into the grooves (21).

4. The knife net electronic target according to claim 1, characterized in that: A protective net (3) for partitioning the induction lines is arranged inside the target body (1); the protective net (3) has the same structure as the metal knife net (2) and is located between the metal knife net (2) and the bottom plate (501) of the target body frame (5); when observed from a perspective perpendicular to the target surface, the metal knife net (2) completely covers the protective net (3); The protection net (3) is provided with a wire slot (31) for accommodating the partition induction wire inside. The lead wire of the partition induction wire passes through the wire hole (4) on the bottom plate (501) and is connected to the circuit board behind the target frame (5).

5. The knife net electronic target according to claim 1, characterized in that: The target frame (5) is composed of a base plate (501) and a fence (502) fastened around the target, and the base plate (501) is provided with 50-partition lead holes, 25-partition lead holes, 3-fold partition lead holes, 2-fold partition lead holes, and local partition lead holes.

6. The knife net electronic target according to claim 5, characterized in that: The bottom plate (501) is provided with a plurality of concentrically distributed annular reinforcing ribs (51) and a plurality of equally spaced radial reinforcing ribs (52) on a side facing away from the target body.

7. The knife net electronic target according to claim 5, characterized in that: A vibration sensor is arranged on the side of the bottom plate (501) facing away from the target body.

8. The knife net electronic target according to claim 1, characterized in that: The number ring is fixed on the target body via a plurality of flattening rubbers (6); a number ring clamping groove is provided on the outer edge of the flattening rubber; a threaded hole (61) for inserting a fastening screw is provided on the flattening rubber (6); and the flattening rubber (6) is fixed on the target body (1) via the screws.

9. The knife net electronic target according to claim 8, characterized in that: A signal light through hole is arranged at the center of one of the flattened rubbers, and a connection signal indicator light (9) is installed in the hole.

10. The knife net electronic target according to claim 8, characterized in that: A circular magnet (8) for magnetizing the dart is built into the center of one of the flattened rubbers.

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