KR20220111508A - Park Golf Club's Hit Point Display - Google Patents

Abstract

The present invention relates to a device for displaying a hit point of a park golf club, wherein a plurality of hit detection sensors are installed on a head face of the park golf club to detect hit points and a plurality of display elements are installed on an upper part or an upper surface of the head face to be turned on for a predetermined time in response to the plurality of the hit detection sensors. The display elements designed to operate in response to the hit detection sensor that detects a hit are configured to be turned on for a predetermined period of time, thereby allowing a player to analyze the hit point by himself and correct a swing posture and the hit point, so that the swing orientation and hitting accuracy of the park golf club can be improved. The device of the present invention comprises: a hit detection sensor (S) attached to a head face (3) to detect a plurality of hit points; a main body (6) installed in an upper part of the head face (3); an opening unit (8) and a joint hole (9) formed on the main body (6), wherein a shaft (7) is separated therefrom and joined thereto; a fixing means fixing the shaft (7) installed on the opening unit (8) and joined into the joint hole (9); a controller (11) installed inside the main body (6); a plurality of display elements (D1 - D5) installed inside the main body (6) and connected to output of the controller (11) to be turned on for a predetermined time in response to the hit detected by the hit detection sensor (S); a charging unit (12) installed inside the main body (6) to supply power; a charging control unit (14) installed inside the main body (6) to charge a battery (12) with power supplied by a charging terminal (13); a connection terminal (14) fixed to one end of the main body (6) and connected to input of the controller (11); and a flexible cable (15) electrically connected to the connection terminal (14) and the hit detection sensor (S).

Description

Park Golf Club's Hit Point Display

The present invention relates to a RBI display device of a park golf club, and more particularly, a plurality of hitting detection sensors for detecting a RBI (hitting point, or hitting location, hitting area) are installed on the head face surface of the park golf club, and the head face By installing a plurality of display elements that are lit for a predetermined time in response to a plurality of hit detection sensors on the upper or upper surface of the It is designed to improve the swing direction (swing direction) and hitting accuracy of Park Golf Club by analyzing and correcting swing posture and RBI.

Park Golf, which is generally installed in city parks, etc., is a public health lifestyle sport in which a golf club is used to hit a plastic ball much larger than a general golf ball and put it into the hole. Management and operation costs are low, and above all, it is easy to play without learning golf, so anyone from children to the elderly, family, lovers, office workers, friends, and the disabled can enjoy it. (Water or sand puddles), etc. are provided, so the users can enjoy the fun without any difference from the general golf course, although it is small in size.

On the other hand, golf is a game in which a stationary ball is hit with a golf club and put into a hole. In order to enter the actual game, a lot of repetitive swing practice is required, and if you neglect swing practice, your skills will not improve. Therefore, in order to catch the swing posture in the early stage, you need to practice your swing whenever you have free time.

On the other hand, it is necessary to correct the phenomenon that the direction is not constant due to the slice or hook when swinging with the Park Golf Club. The golf ball marks are marked on the disposable sticker mark so that the player can analyze the RBI and correct the swing posture and RBI. Because it has to be used, it is cumbersome and inconvenient to use, and since the used disposable sticker mark is discarded, various problems such as cost burden and environmental pollution exist.

Republic of Korea Patent Publication No. 10-1084973 (Title of the invention: Manufacturing method of a sticker for a golf ball, 2011. 11. 23. Patent announcement) Republic of Korea Registered Utility Model Publication No. 20-0272775 (Name of design: Sticker for golf swing practice, 2002. 04. 19. Utility model notice)

The present invention installs a plurality of hitting detection sensors for sensing the hitting point (or hitting position, hitting area) on the head face surface of the park golf club, and corresponding to the plurality of hit detection sensors on the upper or upper surface of the head face, a predetermined A plurality of time-lit display elements are installed so that the display element designed to operate in response to the hit detection sensor is turned on for a predetermined time. An object of the present invention is to provide a RBI display device of a park golf club so that the swing direction and hitting accuracy of the golf club can be improved.

Another object of the present invention is to provide a display device for the RBI of the park golf club, in which the amount of light of the illuminated display element is automatically controlled in consideration of the ambient brightness.

The RBI display device of the park golf club of the present invention includes a plurality of hit detection sensors attached to the head face of the park golf club to detect a hit, a main body installed on the head face, and a park golf club formed on one side of the main body An opening part and a coupling hole through which the shaft of the club is separated and coupled, a fixing means installed in the opening part and fixing the shaft coupled to the coupling hole, a controller installed in the body, and a controller installed in the body and connected to the output of the controller A plurality of display elements that are turned on for a predetermined time in response to the impact detection of the impact sensor, a rechargeable battery installed inside the main body and supplying power, and a charging control unit installed inside the main body and charging power supplied from the charging terminal to the rechargeable battery And, a connection terminal fixed to one end of the body and connected to the input of the controller, and a flexible cable (connection line) electrically connecting the connection terminal and the impact sensor.

The hit sensor includes a central sensor that senses a hit in the sweet spot (center) region of the head face, an upper sensor that senses a hit in the upper region of the sweet spot of the head face, and a lower part that senses a hit in the lower region of the sweet spot of the head face It includes a sensor, a left sensor for detecting a hit on the left side of the sweet spot of the head face, a right sensor for detecting a hit on the right side of the sweet spot on the head face, and a flexible cable connected to the sensor.

It further includes an illuminance sensor connected to the input of the controller and configured to automatically control the amount of light of the display device according to ambient brightness.

The fixing means includes a screw hole formed at the rear end of the opening portion, a blotting portion formed on one side of the front side of the body, a long hole formed in the blotter portion, and a fastening member fitted to the long hole and then fastened to the screw hole.

The hit sensor may be any one of a piezoelectric sensor, a pressure sensor, a capacitive sensor, or a membrane switch.

The present invention provides a plurality of hitting sensors (S1) (S2) (S3) (S4) (S5) installed on the head face (3) of the park golf club (2), and a flexible cable (16) and a main body (6) ) is composed of a plurality of display elements (D1), (D2), (D3), (D4, and D5) installed on the This has the effect of effectively correcting the swing posture and hitting points (or hitting point, hitting area, or hitting location).

In the present invention, since a horizontal long hole 19 is formed in the blotting part 20, the size of the outer diameter or diameter of the shaft 7 is larger than the inner diameter or diameter of the coupling hole 9, so the blotting part 20 is widened, or vice versa. Even if the outer diameter or diameter of the shaft 7 is smaller than the inner diameter or diameter of the coupling hole 9, the screw portion formed in the fastening member 21 is normally fastened to the screw hole 18 even if the grip portion 20 is crooked. Therefore, there is an effect that the body 6 is firmly fixed to the shaft (7).

The present invention saves electric energy because the amount of light of the display elements D1, D2, D3, D4, and D5 is automatically controlled according to the ambient brightness by the illuminance sensor 17 connected to the input of the controller 11 It has the effect of not only not interfering with the game by controlling the amount of light, but also not stimulating the player's vision.

The present invention has higher accuracy and continuous use than analyzing the hitting point after checking the mark of a park golf ball using a disposable sticker marker, which is a conventional paper material. It is a very useful invention that has the effect of being able to.

1 : An exploded perspective view showing an example of the present invention. Figure 2: A plan view showing an example of the present invention. 3 is a front view of the sensor shown as an example of the present invention. Figure 4: A cross-sectional view of a state in which the sensor shown as an example of the present invention is installed on the head face surface. Figure 5: A perspective view of the installation state shown as an example of the present invention. Figure 6: A cross-sectional view of an installation state shown as an example of the present invention. 7 : A circuit block diagram showing an example of the present invention. 8 : A flow chart of lighting a display device shown as an example of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the embodiments of the present invention, the same components in the drawings are denoted by the same reference numerals as much as possible, and detailed descriptions of related known configurations or functions are omitted so as not to obscure the gist of the present invention, and, in addition, the accompanying drawings Matters expressed in may be different from those actually implemented in the drawings schematically for easy explanation of the embodiments of the present invention.

Park golf club RBI display device (1) of the present invention, when swinging a park golf ball with a park golf club (2), to correct a phenomenon in which the direction is not constant due to a slice or a hook A plurality of hit detection sensors (S1) (S2) (S3) (S4) (S5) for detecting the hitting point (hitting point, or hitting position, hitting area) (P) are installed on the head face (3), and the head face ( 3) a plurality of hit detection sensors (S1) (S2) (S3) (S4) and a plurality of display elements (LED) that are lit in correspondence to the upper surface of 3) are installed on the upper surface of the plurality of hit detection sensors (S1) ) (S2), (S3), (S4) and (S5), the display elements (D1) (D2) (D3) (D4) (D5) designed to operate correspondingly to the hit sensor where the hit is detected are turned on and displayed for a predetermined time. By configuring it, it is possible to improve the swing direction (swing direction) and hitting accuracy of the Park Golf Club (2) by allowing the player to analyze the RBI by themselves and correct the swing posture and RBI, so that the interest in the game can be doubled. .

1 is an exploded perspective view of the RBI display device 1 shown as an example of the present invention, FIG. 2 is a plan view of the RBI display device 1, and FIG. 5 is the RBI display device 1 to the park golf club 2 A perspective view of the installed state, a hitting sensor (S) attached to the head face (3) of the park golf club (2) and detecting a plurality of hitting points (P), and the main body installed on the head face (3) (6) and the opening (8) and the coupling hole (9) formed on one side of the main body (6) and separated and coupled to the shaft (7) of the park golf club (2), and installed in the opening (8) and coupled A fixing means for fixing the shaft 7 coupled to the ball 9, a controller 11 installed inside the body 6, and a blower installed inside the body 6 and connected to the output of the controller 11 A display unit composed of a plurality of display elements (D1), (D2), (D3), (D4, and D5) that are lit for a predetermined time in response to the detection of a hit by the detection sensors (S1), (S2), (S3), (S4, and S5) (D), a rechargeable battery 12 installed inside the main body 6 and supplying power, and a charging control unit installed in the main body 6 and charging power supplied from the charging terminal 13 to the rechargeable battery 12 (14), a connection terminal 15 fixed to one end of the main body 6 and connected to the input of the controller 11, and a flexible cable 16 electrically connecting the connection terminal 15 and the impact sensor (S) ) is included. The hit sensor (S1) (S2) (S3) (S4) (S5) is connected to the input of the controller (11) via a flexible cable (16), a connection terminal (16a) and a connection terminal (15).

The display elements D1, D2, D3, D4, and D5 are installed in the main body 6, but have the same shape as the sensors S1, S2, S3, S4, and S5 for sensing a blow. Arranged so that the RBI can be easily recognized.

The display elements D1, D2, D3, D4, and D5 are mounted or fixed to a printed circuit board 24 or the like, and a concave groove is formed on the upper surface of the main body 6 and then the printed circuit board 24. The display element (D1) (D1) ( The emitted light of D2), D3, D4, and D5 is projected so that the player (player) can easily recognize it.

The opening 8 formed on one side of the body 6 is opened on one side, for example, in the direction of the impact sensor (S), as illustrated in FIGS. 1, 2, and 4, and is directed in the direction of the impact sensor (S). By configuring the front and rear or both sides of the inclined surfaces (8a) and (8b), which gradually widen as the number increases, the shaft 7 can be easily coupled to the coupling hole 9 or separated from the coupling hole 9, and It should be easily fixed by using the installed fixing means.

The fixing means includes a screw hole 18 formed at the rear end of the opening 8, a long hole 19 formed in the blotting portion 20 formed on one front side of the body 6, and the long hole 19 ) and then fastened to the threaded hole 18 so that the blotter 20 presses and supports the shaft 7, and includes a fastening member 21 such as a butterfly bolt. 7) is firmly fixed to the

Considering that the outer diameter or diameter of the shaft 7 fitted in the coupling hole 9 is varied, the outer diameter or diameter of the shaft 7 is increased by forming a long hole 19 formed long in the horizontal direction in the blotter 20 . Even if the blotting part 20 is opened because the inner diameter or diameter of the coupling hole 9 is larger than that of the gripper 20, or the outer diameter or diameter of the shaft 7 is smaller than the inner diameter or diameter of the coupling hole 9, As the screw part formed on the fastening member 21 is normally fastened to the screw hole 18 , the shaft 7 is fixed by blotting paper, and the body 6 is fixed to the shaft 7 .

Of course, if you want to separate the main body 6 and the shaft 7, the flexible cable 16 coupled to the connection terminal 15 is separated and the fastening member 21 in the fastened state is separated from the main body 6, and then When the shaft 7 or the body 6 is separated through the opening 8, it is easily separated.

At one side of the coupling hole 9, for example, in the opposite direction of the open part 8, a cutout 22 of a predetermined length is formed to connect or separate the shaft 7 with the coupling hole 9, the blotting part 20 ) is more easily opened and the separation of the shaft 7 becomes easier.

The hit sensor (S) is, as shown in FIGS. 1, 3, 4, and 5, a central sensor (S1) for detecting a hit in the sweet spot (center) area of the head face 3, and the head face (3) The upper sensor (S2) for detecting the blow to the upper area of the sweet spot of the lower sensor (S3) for detecting the blow to the lower area of the sweet pot of the head face (3), and the upper sensor (S3) for detecting the blow to the area to the left of the sweet pot of the head face (3) a left sensor (S4), a right sensor (S5) that detects a blow to the right area of the sweet spot of the head face (3), and each sensor (S1) (S2) (S3) (S4) (S5) connected to a flexible cable 16 .

The sensors S1, S2, S3, S4, and S5 are accommodated or mounted inside the sheet (base) 10 having hard or rigid physical properties, and the sensing signal is transmitted through the flexible cable 16. The output is then input to the controller (11).

The means for fixing the hit sensor (S) to the head face (3) or the head face surface may be a double-sided adhesive tape 23 or a fastening means such as a plurality of screws or pieces that can be fixed to the head face (3). have.

The hit sensor (S) may be any one of a piezoelectric sensor, a pressure sensor, a capacitive sensor, or a membrane switch.

In the case of the piezoelectric sensor, as the park golf ball is hit with a sensor using a piezoelectric material, the hit is sensed with electricity (piezoelectric effect) generated by the pressure applied to the sensor.

In the case of the pressure sensor, the impact is sensed by monitoring the resistance, etc., which is changed by the pressure applied to the sensor as the park golf ball is hit.

In the case of the membrane switch, a contact (switch) is formed by overlapping three plastic films and printing patterns with copper. will do

In the case of the capacitive sensor, it is installed inside the seat 10, and when an external pressure is applied to the conductive plate as a dielectric or dielectric material is installed between two conductive plates to hit the park golf ball, the distance of the conductive plate changes and/or By monitoring the change in the capacitance of the dielectric or dielectric material, it is possible to quickly and accurately detect whether a blow has occurred.

Among the plurality of sensors (S1), (S2), (S3), (S4) and (S5), when the central sensor (S1) for detecting a hit in the sweet spot (center) area detects a hit, the display element (D1) lights up for a predetermined time Therefore, the player can know that the swing direction of the park golf club 2 matches the hitting accuracy, and accurate hitting is achieved by swinging in the same direction.

In addition, when the upper sensor (S2), which detects a hit in the upper area of the sweet pot by the swing, detects a hit, the display element (D2) is turned on for a predetermined time, so that the player can immediately confirm that the swing direction is biased to the upper part, so when the next swing The park golf club (2) is moved downward to swing, and the hitting sensor located at the hitting point (P) detects this and the corresponding display device lights up for a predetermined time. becomes possible

In addition, when the lower sensor (S3), which detects a hit in the lower area of the sweet pot by the swing, detects a hit, the display element (D3) is turned on for a predetermined time, so that the player can immediately confirm that the swing direction is biased downward. In this case, the park golf club (2) is moved upward to swing, and the hitting sensor located at the hitting point (P) detects this and the corresponding display device lights up for a predetermined time, so the swing direction and hitting accuracy can be immediately checked and corrected. there will be

In addition, when the left sensor (S4), which detects a hit in the left area of the sweet pot by the swing, detects a hit, the display element (D4) is lit for a predetermined time, so the player can immediately confirm that the swing direction is biased to the left. In this case, the park golf club (2) is moved upward to the right to swing, and the hitting sensor located at the hitting point (P) detects this and the corresponding display device lights up for a predetermined time, so the swing direction and hitting accuracy are immediately checked. can be corrected

In addition, when the right sensor (S5), which detects a hit in the right area of the sweet pot by the swing, detects a hit, the display element (D5) is lit for a predetermined time, so the player can immediately confirm that the swing direction is biased to the right. In this case, the park golf club (2) is moved to the left to swing, and the hitting sensor located at the hitting point (P) detects this and the corresponding display device lights up for a predetermined time, so the swing direction and hitting accuracy are immediately checked and corrected be able to do

The time when the display elements D1, D2, D3, D4, and D5 are turned on may be 3 to 10 seconds in consideration of the swing period and sufficient recognition time.

7 is a circuit block diagram showing an example of the present invention, a central sensor (S1) and an upper sensor at the input of the controller 11 consisting of a microcomputer (MICOM), a central processing unit (CPU), a micro control unit (MCU), etc. (S2), the lower sensor (S3), the left sensor (S4), and the right sensor (S5) are configured to be connected with a flexible cable 16, respectively, so that the hit detection signal of the corresponding area is input, and the output of the controller 11 When the central sensor S1 is sensed by connecting the display elements D1, D2, D3, D4, and D5 of the display unit D to the ) is sensed, the display element D2 is turned on for a predetermined time, when the lower sensor S3 is sensed, the display element D3 is turned on for a predetermined time, and when the left sensor S4 is sensed, the display element D4 is turned on for a predetermined time. It is turned on, and when the right sensor S5 is sensed, the display element D5 is configured to be turned on for a predetermined time, and the rechargeable battery 12, the charging indicator light 27 and the charging terminal 14 are connected to the input/output of the controller 11. It is configured to connect the charging control unit 13 to be supplied so that the power of the rechargeable battery 12 is supplied, and to display charging and charging status.

In addition, the illuminance sensor 17 is connected to the input of the controller 11 so that an ambient brightness signal is inputted.

8 is a flow chart (flow chart) of display element lighting shown as an example of the present invention, in a state in which the RBI display device 1 is installed in the park golf club 2 and operated by turning on the switch 25. In the state that the hitting sensor (S) hits the park golf ball by the swing motion of Step S2) The display element (LED) corresponding to the sensor is turned on for a predetermined time (Step S3), so the player can immediately check the hitting point and analyze the RBI to correct the swing posture and RBI, so the swing direction of the Park Golf Club (Swing directionality) and hitting accuracy can be improved, and when the lighting time set in the controller 11 is exceeded (step S4), the corresponding display element is turned off (step S5), and electrical energy waste is prevented.

The dot display device 1 of the present invention can be turned on/off by using a switch 25 installed on the front side of the main body 6 .

A charging cable 26 of a charger is connected to the charging terminal 14 to charge the rechargeable battery 12 , and the charging state can be confirmed by the charging indicator light 27 .

The charging terminal 13 may be closed using an opening and closing stopper or cover to prevent foreign matter or moisture from entering during the game.

The charging of the rechargeable battery 12 may be combined with a wired charging method using the charging terminal 13 and a wireless charging method.

In the case of the wireless charging method, it includes a wireless charging module connected to the charging control unit 13, and an induction coil connected to the wireless charging module and inducing electromagnetic waves generated from the coil of a known wireless charger (not shown). In the case of the wireless charging module, in the case of an electromagnetic induction method, the electromagnetic wave generated from the coil of the wireless charger is induced by the induction coil, the current induced by the induction coil is rectified half-wave or full-wave by the rectifying unit, and the rectified voltage is rectified by the constant voltage unit It is converted to a constant voltage with a stable voltage, and overcharge and overdischarge are prevented by the charging protection unit, and then the rechargeable battery 12 is charged by the charging control unit 13 .

The present invention provides an illuminance composed of a photoconductive cell or an optical sensor so that the amount of light of a plurality of display elements D1, D2, D3, D4, and D5 composed of LEDs can be automatically controlled according to ambient brightness. A sensor 17 may be further included.

That is, by connecting the illuminance sensor 17 to the input of the controller 11, the amount of light of the plurality of display elements D1, D2, D3, D4, and D5 can be automatically controlled according to ambient brightness. For example, when the surroundings are bright in broad daylight, the controller 11 increases the amount of light emitted by the display elements D1, D2, D3, D4, and D5 in consideration of the ambient illuminance input through the illuminance sensor 17 to a predetermined value. By controlling the time to be turned on, it is easy to identify, and when the surroundings are dark at night or early in the evening, the controller 11 controls the display elements D1 (D2) (D3) ( By reducing the amount of light emitted by D4) (D5), it is configured to save electric energy by controlling it to be sufficiently discriminated without being visually stimulating.

The illuminance sensor 17 is installed on the upper surface of the main body 6 to sense ambient brightness, but the display element D1 is lit apart from the display elements D1, D2, D3, D4, and D5. )(D2)(D3)(D4)(D5) is preferably not affected by the light emission.

In the present invention, a reinforcing jaw (6a) protruding downward is formed on the bottom surface of the main body (6), so that the shaft (7) to be coupled and fixed is firmly fixed, and the lowering of the main body (6) is prevented. In addition, a reinforcing part 7a is also formed at the lower end of the shaft 7, so that the lowering of the main body 6 is prevented.

The present invention saves electric energy because the amount of light of the display elements D1, D2, D3, D4, and D5 is automatically controlled according to the ambient brightness by the illuminance sensor 17 connected to the input of the controller 11 It has the effect of not only not interfering with the game by controlling the amount of light, but also not stimulating the player's vision.

The present invention has higher accuracy and continuous use than analyzing the hitting point after checking the mark of a park golf ball using a disposable sticker marker, which is a conventional paper material. can

The present invention described above is not limited to the present embodiment and the accompanying drawings, and various substitutions, modifications and changes are possible within the scope without departing from the technical spirit of the present invention, which is in the technical field to which the present invention pertains. It is obvious to those with ordinary knowledge.

(1)--RBI display device (2)--Park Golf Club (3)--Headface (4)--Headface (6)--Main body (6a)--Main body reinforcement part (7)--shaft (7a)--Shaft reinforcement part (8)--open part (8a)(8b)--Slope (9)--Joint hole (10)--sheet (11)--controller (12)--rechargeable battery (13)--Charging terminal (14)--Charging control unit (15)--connection terminal (16)--Flexible cable (connection line) (16a)--connection terminal (17)--Light sensor (D)--Display part (D1)(D2)(D3)(D4)(D5)--display element (S)--Strike sensor (S1)--Central sensor (S2)--Upper sensor (S3)--Lower sensor (S4)--Left sensor (S5)--Right sensor (18)--Screw (19)--Long Kong (20)--Abstract (21)--fastening member (butterfly bolt) (22)--incision (23)--Double-sided tape (24)--Printed board

Claims (5)

A plurality of hit detection sensors (S) attached to the head face (3) of the park golf club (2) and sensing the hit of the park golf ball; the body (6) installed on the head face (3); the body (6) An opening (8) and a coupling hole (9) formed on one side and separated and coupled to the shaft (7) of the park golf club (2); The shaft (7) installed in the opening (8) and coupled to the coupling hole (9) ) fixing means for fixing; the controller 11 installed inside the body 6; installed inside the body 6 and connected to the output of the controller 11, in response to the hitting detection of the hitting sensor (S) predetermined A plurality of time-lit display elements (D1) (D2) (D3) (D4) (D5); Rechargeable battery 12 installed inside the main body 6 and supplying power; Installed inside the main body 6 and a charging terminal A charging control unit 14 for charging the power supplied from 13 to the rechargeable battery 12; a connection terminal 14 fixed to one end of the body 6 and connected to the input of the controller 11; a connection terminal 14 and A RBI display device of a park golf club comprising a; a flexible cable (15) for electrically connecting the hitting sensor (S). The method according to claim 1; The hit sensor (S), a central sensor (S1) for detecting a hit in the sweet spot area of the head face (3); An upper sensor (S2) for detecting a blow to the upper area of the sweet spot of the head face (3); A lower sensor (S3) for detecting a hit in the lower area of the sweet spot of the head face (3); A left sensor (S4) for detecting a hit in the left area of the sweet spot of the head face (3); A park comprising; a right sensor (S5) that detects a blow to the right area of the sweet spot of the head face (3); a flexible cable (16) connected to the sensors (S1) (S2) (S3) (S4) (S5); Golf club RBI indicator. The RBI display device of a park golf club according to claim 1 or 2, further comprising: an illuminance sensor (16) connected to the input of the controller (11). The method according to claim 1 or 2; The fixing means, A screw hole (18) formed at the rear end of the opening portion (8); A pressure paper portion (20) formed on one side of the front side of the body (6); A pressure paper portion (20) A long hole (19) formed in; A fastening member (21) fitted to the long hole (19) and then fastened to the screw hole (18); Park golf club's RBI display device comprising a. The RBI display device of a park golf club according to claim 1 or 2, wherein the hitting sensor (S) is any one of a piezoelectric sensor, a pressure sensor, a capacitive sensor, or a membrane switch.

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