JPH0746288Y2 - Ball transfer device for golf practice - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention provides an arm with a rail that is rotatable around a support shaft and is normally erected on the rear side, by using the weight of the ball delivered from the ball supply unit and a slight rolling energy. When the ball, which has been rolled down to the front end of the rail and falls onto the tee standing on the play mat, is tilted sideways by and the arm 5 with rail jumps up to return to the original standing state. There is no risk of the correct positional relationship between the front end of the rail and the tee shifting during use of the device,
The present invention relates to a ball transfer device for golf practice that is easy to install and does not require power for arm rotation and can be made small and lightweight.

[0002]

2. Description of the Related Art As described above, depending on whether or not the weight of a ball is added to a feed arm (arm with a rail), the feed arm is erected in a laterally tilted position for transferring the ball and a standing position that does not interfere with the swing. An example of an automatic ball feeding device for golf practice that is configured to automatically repeat rotation between two positions is, for example, "J.
No. 60 gazette ”. In addition to this, various types such as one that uses power to rotate the feed arm have been devised.

[0003]

In the above-mentioned conventional apparatus, since the feed arm is assembled to the ball supply section, the tee and the feed arm which are erected on the play mat which is a separate body from the ball supply section. In order to prevent the correct positional relationship with the tip of the ball from gradually deviating due to continued vigorous swing motion, each of the considerably heavy ball supply section (ball box) and play mat is embedded in the concrete floor surface. It requires extremely troublesome fixing work such as connecting them with each other by bolts and nuts, or directly placing the ball supply portion on the play mat and fixing it with bolts and nuts. However, the play mat may shift during use due to the severe impact that accompanies swing practice, or the installation position may shift from the original position when the play mat or tee is replaced with a new one. It was inevitable that the positional relationship between the tee and the tip of the feed arm would shift. If this happens, of course, the ball that rolls on the feed arm and reaches the tip does not drop right above the tee,
It cannot be placed on the tee. In that case, it has been forced to perform extremely troublesome work for correcting the positional relationship. Particularly, for a beginner, if the feeding arm is lengthened so that the club does not feel like being hit by the feeding arm or the like when swinging, the above troublesome phenomenon is more likely to occur. Further, in the above-mentioned conventional apparatus, since the feed arm needs to be provided with a ball receiving portion, this arm is bent in an L-shape, so that the arm support shaft has to be attached at a considerably high position. As a result, the height of the ball supply unit is also increased, and therefore, when a beginner or the like makes an extreme miss shot, there is a high possibility that the club will hit the ball supply device. Therefore, the object of the present invention is to prevent the positional relationship between the tee and the tip of the feed arm (arm with rail) from shifting during repeated use of the device, and to install the device without extra time and effort. If there is a slight deviation in the above-mentioned positional relationship during use, it can be easily corrected, and the feed arm that interferes during swinging can be rotated to the rear side. An object of the present invention is to provide a ball transfer device for golf practice, which does not require power to stand up and is held down by a short height of the device, which has a simple structure and is lightweight and small in size.

[0004]

In order to achieve the above object, the ball feeding device for golf practice according to the present invention is pivotally supported at a portion near the rear end thereof on a horizontal support shaft 4 provided on an arm mount 3. And the arm 5 with a rail to which a ball is supplied from the ball supply unit to the rear of the rail surface, and the arm 5 with a rail.
Is provided at the front end of the rail to drop the ball rolling on the front end onto the tee, and when the ball is not supplied, the rail-equipped arm 5 is rotated around the horizontal support shaft 4. Further, there are provided rotation biasing means 9 and 17 for rotating the rear side to the standing state, and fixing means 14 for fixing the arm mount 3 at a predetermined position of the play mat on which the tee is erected. The weight of the ball supplied to the rear (lower) part of the rail surface of the arm 5 with rail in the upright state is applied to the arm 5 with rail on the front side of the horizontal support shaft 4, The rail-equipped arm 5 is constructed so that it is rotated forwards against the urging force of the rotation urging means 9 and 17 and is in a state of falling sideways. As the rotation urging means, a weight 9 may be provided on the rear end side of the rail-equipped arm 5 or a spring 17 may be attached around the horizontal support shaft 4. The cylinder length of the drop guide portion 11 is approximately 1/2 of the cylinder diameter.
It may be formed into a cylindrical shape of a certain size. On the arm mount 3, two support plates 12 and 12 are erected at a predetermined interval, and the top surfaces of both support plates 12 and 12 are respectively connected to the ball guide path 1.
2a and 12a, and the facing distance between them may be gradually expanded toward the ball outlet of the ball supply section.
The fixing means 14 may be provided with a fine adjustment means for fixing positions. As the fixing means 14 and the fine adjustment means, a long bolt hole 3c may be provided in the lower portion of the arm mount 3, and a bolt inserted through the long bolt hole 3c and the bolt hole of the play mat may be fastened with a nut. The rail-equipped arm 5 has a configuration in which two parts of an arm rear part 5A and an arm front part 5B are connected via a hinge part 15, and the arm front part 5B is bent rearward when in the upright state. You may. The rail-equipped arm 5 is provided with a receiving portion 5C that receives the ball supplied in the upright state at a rear (lower) side position of the horizontal support shaft 4, and the rail-equipped arm 5 is predetermined. You may make it provide the auxiliary rotation urging | biasing means 18 and 19 which rotates to the front side of the said horizontal support shaft 4 by making it rotate to the angle front side, and makes the ball on the said receiving part 5C roll.

[0005]

In the device of the present invention, the arm mount 3 is placed at a predetermined position on the play mat which is fixed on the play ground adjacent to the ball supply section, and fixed by the fixing means 14 to the play mat. Over. At this time,
Unlike the conventional case, the troublesome work for firmly connecting the ball supply portion and the play mat 2 to each other is unnecessary. When the ball delivered from the ball supply unit collides with the rail-equipped arm 5 which is normally in the standing state at a predetermined position on the front (upper) side of the horizontal support shaft 4, due to the collision force and the weight, The rail-equipped arm 5 is pivoted to the front side to fall sideways. The ball rolls on a rail which is laid sideways slightly downward to reach the front end thereof, falls inside the drop guiding portion 11 and is placed on a tee directly below the fall guiding portion 11. The rail-equipped arm 5 released from the weight of the ball is returned to the original standing state by the rotation urging means 9 and 17. Since the ball transfer device and the tee are fixed on a common play mat, the feed arm disclosed in the above publication is integrally assembled with the ball supply unit even under severe use conditions during swing exercise practice. Unlike the one in which the ball supply portion and the play mat are separated from each other, there is no fear that the correct positional relationship between the drop guide portion 11 at the tip of the rail-equipped arm 5 and the tee is displaced. If the correct positional relationship between the drop guide portion 11 and the tee is deviated due to replacement of the worn tee or play mat, the fixing / fine adjusting means 14 can correct this very easily. Further, when a receiving portion 5C for receiving the supply ball is provided at a position rearward (downward) of the horizontal support shaft 4 of the arm 5 with rail in the upright state, when the ball is placed on the receiving portion 5C. Then, when the rail-equipped arm 5 is rotated forward by a predetermined angle by the auxiliary rotation urging means 18 and 19, the ball is rolled to the front side of the horizontal support shaft 4, and hence the same as above. Is operated.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, the ball transfer device is an arm removably fixed on a play mat 2 fixedly placed on the play ground, adjacent to a ball supply unit 1 which is separate from the device of the present invention. A mounting base 3 and a rail-equipped arm 5 pivotally supported at a position near the rear end of a horizontal support shaft 4 provided on the arm mounting base 3 are main components. An artificial turf 7 in which a rubber tee 6 is detachably inserted in a fixed position is fitted and laid on a play mat 2 made of a rubber plate or the like. The ball supply unit 1 has a well-known structure and is provided with a delivery means for delivering the golf balls A one by one. Although the ball supply unit 1 is not connected to the ball supply unit 1, the ball supply unit 1 may be connected by appropriate means as necessary. Good.

Next, the detailed structure will be sequentially described. As shown in FIG. 2, the rail-equipped arm 5 supplies the golf balls (hereinafter, simply referred to as balls A) delivered one by one from the ball supply unit 1 to the rear portion of the rail-shaped rail surface, It rolls to the front end side, and in a state of being laid sideways around the horizontal support shaft 4, the rear portion of the rail surface is formed into a slope a that inclines upward toward the rear end, and is connected to the horizontal portion. The region is formed into a curved surface, and this curved portion serves as a receiving portion 8 for the ball A sent from the ball supply portion 1.
Further, the rear portion of the rail-equipped arm 5 is formed in a block shape having a substantially triangular side surface so as to give weight, and the rear portion serves as a weight urging portion 9 which serves as a rotation urging means of the rail-equipped arm 5.
I am trying. The weight 9 is provided with a shaft hole 10 near the receiving portion 8 for allowing the horizontal support shaft 4 to pass therethrough.

The front end portion of the rail-equipped arm 5 is formed into a curved surface b which is slightly inclined upward toward the tip in the state of being laid down, and the front end portion thereof has a cylindrical shape for dropping the ball A onto the tee 6. The drop guide section 11 having the above-mentioned structure is continuously provided. A recess 11a for dropping the ball A into the cylinder is provided at the upper edge of the drop guiding portion 11, and an arcuate barrier 11b is provided at a position facing the recess 11a to extend the arm with rail. The ball A that has rolled over 5 is set so as not to pass over the fall guiding portion 11 by inertia. The cylindrical length of the cylindrical drop guiding portion 11 is approximately 1/2 of the cylindrical diameter.

The arm mount 3 serves as a mount for the horizontal support shaft 4 and the ball A sent from the ball supply unit 1.
Also has a role of forming a ball guide path for guiding the rail to the receiving portion 8 of the rail-equipped arm 5, and the two support plates 12, 12 are provided.
Each support plate 1 has a form in which the
2, 12 tops 12 with a slight downward slope
a and 12a are ball guideways. The facing distance between the ball guide paths 12a, 12a is expanded toward the rear end side of the ball supply unit 1 which faces the ball outlet 1a, so that the ball outlet 1a and the ball guide paths 12a, 12a.
The ball A is supplied onto the ball guide paths 12a and 12a without any trouble even if the front-to-back positional relationship with the rear end of a is slightly deviated.

Numeral 13 is a stopper integrally provided on the front part of the arm mount 3 and serves to receive the rail-equipped arm 5 which is rotated in a horizontal direction. The stopper 13 has an upper surface provided with three steps in a direction orthogonal to the longitudinal direction of the rail-equipped arm 5, and is slidable in a direction orthogonal to the rail-equipped arm 5 along a guide rail 3a provided on the arm mount 3. I have to. Therefore, the front downward inclination angle of the rail can be switched to three stages when the rail-equipped arm 5 is laid sideways. Overhanging edges 3b are provided on both sides of the lower part of the arm mount 3, and bolts 14 as fixing means for fixing the arm mount 3 at a predetermined position on the play mat 2 are provided on both the overhanging edges 3b, 3b. Long bolt hole 3c for insertion
Are provided in a direction parallel to the arm 5 with rail. The long bolt hole 3c also serves as a fine adjustment means for adjusting the fixing position of the arm mount 3.

Next, the operation of the above configuration will be described. The ball transfer device of the present invention can be installed very simply by screwing the arm mount 3 at a predetermined position on the play mat 2 by means of bolts 14 (and nuts) as fixing means. At that time, a metal plate or the like for reinforcement may be added to the ball cradle mounting portion of the rubber play mat 2. In this installed state, the rear ends of the ball guide paths 12a, 12a are set so as to face the ball outlet 1a of the ball supply unit 1. When the ball A is not supplied, the arm 5 with rails is rotated rearward around the horizontal support shaft 4 by the action of the weight portion 9 and stands up with its front end side facing upward as shown in FIG. State and occupy a position that does not interfere with the player's swing motion. Therefore, in particular, a player who is a beginner can be relieved from the extra consideration of not accidentally hitting the rail-equipped arm 5, and can concentrate on the swing motion.

Next, as shown in FIGS. 3 and 4, one ball A is operated by operating the ball supply unit 1 for the next swing practice.
When the ball is delivered from the ball delivery port 1a, the ball A
On the upper surface of the arm mount 3 rolls on the ball guideways 12a, 12a inclined downward to the front and collides with the receiving portion 8 of the rail-equipped arm 5 while applying acceleration. By the reaction, the rail-equipped arm 5 rotates forward around the horizontal support shaft 4, and the weight of the ball A is weighted on the rail-equipped arm 5 at the front side of the horizontal support shaft 4. The weight distribution of 5 shifts to a heavier state on the front side than on the rear side of the horizontal support shaft 4. Therefore, as shown in FIG. 4, the arm 5 with rails continues to rotate forward around the horizontal support shaft 4, and when it is in the state of the sideways tilting as shown in FIG. , The stopper 13 is stopped and the rotation is stopped. During this time, the ball A supplied to the rear on the rail-equipped arm 5 rolls toward the front end thereof, reaches the upward curved surface b near the front end, is decelerated in its rolling speed, and is tubular. It falls into this cylinder through the recess 11a of the drop guiding portion 11 and is placed on the tee 6 located immediately below as shown in FIG.

When the ball A on the rail-equipped arm 5 moves onto the tee 6, the rail-equipped arm 5 is provided in front of and behind the horizontal support shaft 4.
Since the rear side becomes heavier on the rear side than on the front side again, it naturally rotates to the rear side and returns to the standing state shown in FIG. 3, which is the steady state, and the ready state for supplying and receiving the next ball A is prepared.

Depending on the player's preference, when the tees 6 having different heights are replaced, especially when the tees 6 are considerably short, the recess 11 of the drop guiding portion 11 is replaced.
Since the drop from a to the upper surface of the tee 6 becomes large, the ball A dropped from the drop guiding portion 11 at the tip of the rail-equipped arm 5 is highly likely to bounce on the rubber tee 6 and fall. However, in this embodiment, the diameter of the drop guide portion 11 is slightly larger than the diameter of the ball A so that the drop guide portion 11 does not come into contact with the ball A when the drop guide portion 11 separates from the position of the tee 6, and Since the cylinder length of the drop guiding portion 11 is set to about ½ of the cylinder diameter, swinging of the ball A bounding and deviated from the center of the tee 6 is rapidly suppressed by the inner wall of the cylinder. It can be surely placed on the tee 6. When the tee 6 is short as described above, the stopper 13 is moved along the guide rail 3a so that the railed arm 5 is received by the lowest step of the upper surface of the stopper 13 having the step. In this case, as can be understood by comparing FIG. 7 and FIG. 8, the drop can be sufficiently reduced.
In consideration of the case where the drop is considerably large, the drop guiding portion 11 may have a curved shape that matches the rotation locus of the front end of the rail-equipped arm 5.

9 to 11 show a second embodiment of the present invention. The difference from the first embodiment is that the arm 5 with a rail is provided with an arm rear part 5A and an arm front part in the longitudinal direction thereof. 5B
It is divided into two parts, and these parts 5A and 5B are connected via a hinge part 15. Reference numeral 16 is a restraint member provided at the rear end of the arm front portion 5B, and plays a role of preventing the rail-equipped arm 5 from being bent in a V shape from a straight state when the rail-equipped arm 5 is turned to the sideways state. Further, a step portion 12b is provided in the middle of the ball guiding path 12a so as to accelerate the rolling speed of the delivered ball A.

The operation of this embodiment is different from that of the first embodiment, as shown in FIG. 11, when the arm 5 with rails is in the standing state, the arm front portion 5B moves backward around the hinge portion 15. It is bent at a certain angle so that it can be moved further away from the player.

12 and 13 show a third embodiment of the present invention. The difference from the first and second embodiments is that instead of the weight portion 9, the spring 17 is horizontal as the biasing means for bringing the rail-equipped arm 5 to the upright state when the ball A is not supplied to the rail-equipped arm 5. It is installed around the support shaft 4. In this case, the coil spring 17 inserted into the horizontal support shaft 4 is inserted.
Has both ends thereof hooked on the rail-equipped arm 5 and the arm mount 3, respectively. Instead of the coil spring, a spring wire or a leaf spring can be used.

14 and 15 show a fourth embodiment of the present invention. The feature of this embodiment is that the ball feeding unit 1 is designed to keep the ball transfer device as far as possible from the movement trajectory of the club head during swing so that the club does not hit the device even if a beginner makes an extreme miss shot. By reducing the height of the ball, the ball can be placed on the rail surface of the rail-equipped arm 5 even if the position of the ball outlet 1a becomes considerably low. Therefore,
The rail-equipped arm 5 is provided with a receiving portion 5C formed in the shape of an arc to receive the ball A sent from the ball supply portion 1 at a position below (rear) from the horizontal support shaft 4 in the upright state. ing. On the other hand, one side of the support plate 12 of the arm mount 3 is sandwiched between the horizontal support shafts 4, a crank-shaped turning rod 18 is axially fitted to the inside thereof, and a crank-shaped lever 19 is also fitted to the outside thereof. The shaft is fitted. Reference numeral 20 is a stop pin that regulates the rotation angle of the lever 19. The rotary rod 18, the lever 19 and the stop pin 20 constitute an auxiliary rotary biasing means for the rail-equipped arm 5.

As shown by the solid line in FIG. 15, the operation of this embodiment is such that the ball feeding portion 1C feeds the ball feeding portion 1 to the receiving portion 5C located below the horizontal support shaft 4 of the arm 5 with rail in the upright state. Even when the ball A is supplied from the outlet 1a, the rail-equipped arm 5 is in a standing state unlike the ones of the first to third embodiments. Then, when the player pushes the lever 19 backward, for example, with a golf club head,
The rotary rod 18 axially fitted to the horizontal support shaft 4 is also pivoted rearward in conjunction with the lever 19. Therefore, the arm with rail 5
The receiving portion 5C of the ball gradually rises to the forward leaning state and the ball A
Is rolled forward, and the arm 5 with rail is 2 in the middle of the figure.
When the rotation position shown by the dotted line is reached, the ball A moves to the front side of the horizontal support shaft 4, and at this time, the lever 19 just moves the stop pin 20.
When it hits, it is prevented from rotating further. After that, similarly to the above-described embodiment, the rail-equipped arm 5 falls sideways due to the weight of the ball A, and after automatically moving the ball A onto the tee 6, it naturally returns to the standing state. At that time, the rotating rod 18 and the lever 19 are pushed by the movement of the rail-equipped arm 5 to return to the position indicated by the solid line in FIG. As another configuration of the auxiliary rotation urging means, for example, a weight detection sensor detects that the ball A has landed on the receiving portion 5C, the detection signal energizes the solenoid actuator, and the reciprocating rod thereof. It is also possible to automatically actuate the auxiliary rotation urging means if it is constructed so as to move forward and press and rotate the lever 19.

In each of the above-mentioned embodiments, the rail-equipped arm 5 is not limited to the linear shape, but may be formed in a curved shape having an arbitrary curvature, or the arm mount 3, the rail-equipped arm 5, the weight. Part 9, fixing means and fine adjustment means 14 and 3 for fixing position
The object of the present invention can be achieved even if the shapes of the respective constituent members such as c, the auxiliary turning biasing means 18 and 19 and the assembling method thereof are appropriately changed.

[0021]

As is apparent from the above description, the ball transfer device for golf practice of the present invention can be installed by simply fixing the arm mount to a predetermined position of the play mat by a simple fixing means. Unlike the one disclosed in the publication, the troublesome work of firmly connecting the play mat and the ball supply section is eliminated. Since the tee and the arm mount are mounted on the play mat which is a common mounting base for these, the conventional one can be used even under the severe use condition such as the club repeatedly hitting the tee repeatedly. Unlike the above, there is no fear that the front end of the rail-equipped arm and the tee are misaligned. Also, even if the worn tees, play mats, artificial turf, etc. are replaced with new ones, and the correct positional relationship is somewhat deviated, this can be easily corrected by the fine adjustment means. Further, the power for rotating the arm with rail is not required, and the mounting position of the support shaft of the arm with rail can be lowered, so that the device can be manufactured in a small size, light weight and at low cost. Further, since the height of the device can be reduced, even if a beginner makes an extreme miss shot, the risk of the club hitting the device can be surely eliminated.

[Brief description of drawings]

FIG. 1 is a partial vertical perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view of an arm with a rail of the same.

[Figure 3]

FIG. 6 is an explanatory diagram of an operation of the arm with rails, same as above.

FIG. 7 is an explanatory diagram of a positional relationship between the drop guide portion and the tee when a tee having a high height is used.

FIG. 8 is an explanatory diagram of a positional relationship between a drop guide portion and a tee when a tee having a low height is used.

FIG. 9 is a view, corresponding to FIG. 1, showing a second embodiment of the present invention.

FIG. 10 is a view corresponding to FIG.

FIG. 11 is an explanatory view of the operation of the arm with a rail.

FIG. 12 is a view, corresponding to FIG. 11, showing a third embodiment of the present invention.

FIG. 13 is a diagram corresponding to FIG.

FIG. 14 is a partially cutaway perspective view showing a fourth embodiment of the present invention.

FIG. 15 is a view on arrow XX in FIG. 14;

[Explanation of symbols]

 A golf ball 1 ball supply unit 1a ball outlet 2 play mat 3 arm mount 3a guide rail 3b overhanging edge 3c long bolt hole (fine adjustment means) 4 horizontal spindle 5 arm with rail 5A arm rear 5B arm front 5C Receptive part 6 Tee 7 Artificial grass 9 Weight part (rotating biasing means) 10 Shaft hole 11 Drop guide part 11a Recess 11b Barrier 12 Support plate 12a Ball guide way 12b Step part 13 Stopper 14 Bolt (fixing means) 15 Hinge part 16 Restraint member 17 Spring (rotating biasing means) 18 Rotating rod (auxiliary rotating biasing means) 19 Lever (auxiliary rotating biasing means) 20 Stop pin a Slope b Curved surface

Claims (8)

[Scope of utility model registration request] 1. A rail-equipped arm 5, which is pivotally supported at a position near a rear end thereof by a horizontal support shaft 4 provided on an arm mount 3 to supply balls to a rear portion of a rail surface from a ball supply section, and the rail-equipped arm 5. A drop guide portion 11 which is continuously provided at the front end of the arm 5 and drops the ball rolling at the front end onto the tee.
When the ball is not supplied, the arm 5 with rail is
Rotation urging means 9 and 17 for rotating the shaft around the horizontal support shaft 4 to the rear side to bring it upright, and the arm mount 3.
And a fixing means 14 for fixing the tee to a predetermined position of the play mat, and the weight of the ball supplied to the rear (lower) portion of the rail surface of the arm 5 with rail in the upright state is By being loaded on the rail-equipped arm 5 on the front side of the horizontal support shaft 4, the rail-equipped arm 5 is pivoted to the front side against the biasing force of the pivotal biasing means 9 and 17. A ball transfer device for golf practice, which is configured to be in a sideways state. 2. The ball transfer device for golf practice according to claim 1, wherein the drop guide portion 11 has a tube length of about ½ of a tube diameter. 3. The rotation urging means is a weight portion 9 provided on the rear end side of the rail-equipped arm 5 or a spring 17 assembled around the horizontal support shaft 4. Item 1
A ball transfer device for golf practice described in paragraph 2 or 2. 4. The arm mount 3 comprises two support plates 1
2 and 12 are provided in a standing manner so as to be opposed to each other at a predetermined interval, and the top surfaces of the support plates 12 and 12 are respectively provided with the ball guide path 1.
4. The golf practice according to any one of claims 1 to 3, characterized in that 2a and 12a are formed, and a facing distance between them is gradually widened toward a ball outlet of the ball supply portion. Ball transfer device. 5. The ball transfer device for golf practice according to claim 1, wherein the fixing means 14 is provided with a fine adjustment means of a fixed position. 6. The fixing means / fine adjusting means 14 is a long bolt hole 3c provided in a lower portion of the arm mount 3 and a bolt / nut fastened to the play mat through the long bolt hole 3c. 6. The ball transfer device for golf practice according to claim 5. 7. The rail-equipped arm 5 includes an arm rear portion 5
It has the form which connected two parts of A and arm front part 5B via the hinge part 15, and was constituted so that arm front part 5B may bend to the back side in the said standing state. A ball transfer device for golf practice according to any one of items 1 to 6. 8. The rail-equipped arm 5 is provided with a receiving portion 5C for receiving the supplied balls at a rear (lower) side position of the horizontal support shaft 4 in the upright state, Auxiliary rotation biasing means 18, 19 for rotating the arm 5 with rail forward by a predetermined angle to roll the ball on the receiving portion 5C to the front side of the horizontal support shaft 4 are provided. A ball transfer device for golf practice according to any one of claims 1 to 7.