JPS646851Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pole attached to a golf ball removal device.

One way to practice at a golf driving range is to practice on the green (a flat area with a pole in the center).
Practice what is called an approach shot, in which you hit a golf ball and place it on the ground. In this case, if the number of balls already on the green increases, the player may lose sight of the ball he just hit, partly because the ball is far away, and it becomes difficult to confirm that it is on the green. Furthermore, golfers experience a truly unpleasant feeling when the ball they hit is blocked by a ball already on the green, causing it to roll in an unexpected direction instead of rolling normally. Become. For this reason, there is a golf ball removal device as a device that automatically removes balls on the green at any time. As an example, in Japanese Patent Publication No. 57-12624,
When the pole is upright, it serves as a target in approach shot practice, and when the ball is to be removed, the pole is placed on its side and swung around the green to remove the ball from the green.This is a golf ball removal device. is listed.
The minimum length of the pole in this device is approximately the same as the radius in the case of a circular green.
As the green grows larger, the poles must be made longer. However, the length of the pole is regulated, and if it is longer than that, golfers will feel uncomfortable compared to the length of the pole on the golf course they are used to, and it will be difficult to measure the distance. This will cause dissatisfaction.

This device allows the pole to be shortened to a specified length when it is upright, and can be extended to a length that matches the size of the green when it is lying on its side. To provide a pole for a golf ball removing device, characterized in that the pole is bent along the undulations of the terrain.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a cross-sectional view showing a first embodiment of this invention. FIG. 2 is a front view of a mechanical part of a golf ball removing device having a shaft to which a pole is connected according to the present invention. A second hollow shaft 2 is inserted into the first hollow shaft 1, and a third hollow shaft 2 is inserted into the second hollow shaft 2.
Insert the hollow shaft 3 (the final shaft does not need to be hollow). A retaining ring 4 is inserted and fixed inside the tip of the first hollow shaft 1. The outer diameter of the second hollow shaft 2 is smaller than the inner diameter of the retaining ring 4. A stop pin 5 is fitted in the vicinity of the lower part of the second hollow shaft 2 in a right angle direction.
The length of the stop pin 5 is shorter than the inner diameter of the first hollow shaft 1.

Similarly, a retaining ring 6 is provided inside the tip of the second hollow shaft 2.
Insert and fix. 3rd diameter than the inner diameter of this retaining ring 6
The outer diameter of the hollow shaft 3 is made small. Third hollow shaft 3
A retaining pin 7 is fitted in the vicinity of the lower part of the third hollow shaft 3 in a direction perpendicular to the third hollow shaft 3. A rotary fitting 9 for attaching a flag 8 is attached to the tip of the third hollow shaft 3.
Fits loosely and rotates freely around. Furthermore, the flag may be attached to the tip portion of the first hollow shaft 1 without being limited to this, and may be connected to a hanging ring fixed to the first hollow shaft 1 with a string. At the lower end of the first hollow shaft 1, a connecting shaft 10 is freely bent and connected with a pin to a shaft 11 that slides in the vertical direction and is rotationally driven in a mechanical section of a golf ball removing device. The operation of the golf ball removing device includes a mechanism for vertically moving the shaft 11 to make the connecting shaft 10 upright in the lower part and toppling the connecting shaft 10 sideways in the upper part;
Since the structure has a mechanism for rotating or revolving the shaft 11, if the first hollow shaft 1 is inserted and connected to the connecting shaft 10 which is freely bent and connected to the shaft 11, and the first hollow shaft 1 is inserted and connected, the first hollow Since the shaft 1 is swung around while standing upright, falling down, or even lying on its side, the second and third hollow shafts 2 built into the first hollow shaft 1,
3 moves freely and the pole expands and contracts.

FIG. 3 is a cutaway side view showing the second embodiment, which is a partially modified version of the first embodiment.
That is, instead of the stop pins 5 and 7 that are fitted through the second hollow shaft 2 and the third hollow shaft 3 near their lower parts, stop metal fittings 12 and 13 are fixed. The shape of the stopper is not limited to this, and it may be a cylindrical tube provided externally to the hollow shaft.

According to the golf ball removal pole according to this invention, the second hollow shaft 2 can easily move within the first hollow shaft 1, and the third hollow shaft 3 can easily move within the second hollow shaft 2. Therefore, as the first hollow shaft 1 is made upright by the mechanism of the golf ball removing device, the second and third hollow shafts 2 and 3 are naturally inserted into the first hollow shaft 1. When the first hollow shaft 1 is laid down on its side and swung around on the green, centrifugal force acts and the second and third hollow shafts 2 and 3 gradually come out and are attached to the stop rings 4 and 6 by the stop pin 5. ,7
extend until they touch each other. In this case, the outer diameters of the second and third hollow shafts 2 and 3 are smaller than the inner diameters of the retaining rings 4 and 6 to provide clearance, so when the second and third hollow shafts are laid down horizontally and extended, the second
Deflection occurs due to the dead weight of the hollow shaft 2 and the dead weight of the third hollow shaft 3, and sagging occurs at the contact points of each hollow shaft 1, 2, and 3, and it is possible to bend in the axial direction at this part. .

Note that although the embodiment of the present invention has a configuration using three hollow shafts, the number is not limited to this number.

Since the pole for the golf ball removing device according to the present invention has the above-described structure and function, the length of the pole, which is the target of the approach, can be kept within the specified length, and when removing the ball on the green. can naturally grow to a length that matches the size of the green. Furthermore, in response to undulations on the top of the green, when the pole is extended, the clearance between the pull-out prevention metal fitting and the hollow shaft allows it to bend, so it does not completely lift off the top of the green.
Since the pole touches the top of the green, golf balls can be completely excluded.

[Brief explanation of the drawing]

FIG. 1 is a cutaway surface diagram showing a first embodiment of the present invention. FIG. 2 is a partially cross-sectional front view of the mechanical part of the golf ball removing device. FIG. 3 is a cut surface diagram showing the second embodiment. 1...First hollow shaft, 2...Second hollow shaft, 3...
3rd hollow shaft, 4, 6... retaining ring, 5, 7... retaining pin, 10... connecting shaft.

Claims (1)

[Scope of utility model registration request] A second hollow shaft is loosely inserted into the first hollow shaft, a third hollow shaft is loosely inserted into the second hollow shaft, and an arbitrary number of hollow shafts are sequentially loosely inserted, and each hollow shaft is provided with a When the first hollow shaft is placed upright, the second and third hollow shafts fall freely and are housed within the first hollow shaft, and the first hollow shaft is placed in the first hollow shaft. When it is laid down on its side and swung around, the second and third arbitrary number of hollow shafts are sequentially and freely extended due to centrifugal force, and in the extended state, there is sufficient clearance for bending in the axial direction of each hollow shaft. , a connecting shaft inserted into the lower part of the first hollow shaft, and a shaft attached to a golf ball removing device that shares a rotating mechanism and a mechanism for making the connecting shaft stand upright at a lower portion and fall sideways at an upper portion; A pole for a golf ball removal device that is freely connected.