JP6633755B2 - Horseshoe - Google Patents

Description

  The present invention relates to horseshoes for racehorses.

  Conventionally, horseshoes are attached to the hooves of racehorses, and the horseshoes are used to protect the hooves and improve the competitive ability. Training horseshoes are used during training, and competition horseshoes are replaced during competition. Also, in order to reduce the burden of replacement, a dual-purpose horseshoe that can be used at the time of training and competition is also used. The training horseshoe is formed of extremely mild steel, and the competition horseshoe and the dual use horseshoe are formed of an aluminum alloy.

Such a horseshoe is mounted on the hoof using a nail or an adhesive, and the iron tail of the horseshoe abutting on the heel is not fixed to the hoof so as not to hinder the hoofing action of the hoof.
In addition, since the vehicle lands on the heel portion during traveling, the load applied to the heel portion increases. This load increases as the traveling speed increases. Therefore, in order to protect the hooves of the racehorse, the iron tail of the horseshoe preferably has a cushion function.

  Horseshoes having such a cushion function are mainly intended for horses with weak hooves, and there are horseshoes in which rubber or other cushioning material is attached to a hoof contact surface, which is a surface with which the hoof contacts. However, in the case of such a horseshoe, the cushioning material is likely to be worn by the contact of the hoof. For this reason, the hoofing nail is easily loosened, and there is a possibility that the horseshoe falls from the hoof, that is, a fallen iron falls.

  On the other hand, in Patent Literature 1, in order to protect the hooves of a racehorse, a groove-shaped recess extending along the circumferential direction is formed on an outer peripheral portion from an iron tail portion to an iron side portion, and rubber is formed in the concave portion. There is disclosed a horseshoe in which a cushioning material such as is embedded.

JP-A-4-36135

  By the way, in the horseshoes disclosed in Patent Literature 1, since the concave portion extends in the circumferential direction from the iron tail to the iron side along the circumferential direction, it is necessary to secure the strength of the iron tail and the iron side. Is difficult and cracks may occur. Further, since the groove-shaped concave portion is filled with the buffer material, it is difficult to fill the buffer material to the deepest portion of the concave portion. This leaves room for improvement in ensuring a stable cushion function.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a horseshoe that can suppress the occurrence of iron fall and can stably secure a cushion function of an iron tail. It is in.

The horseshoe for achieving the above object has a through hole formed in the iron tail portion in the width direction, and the through hole is filled with a cushioning material.
According to such a configuration, since the cushioning material is filled over the entire width of the iron tail, the shock absorption of the iron tail is improved. Moreover, since the through-hole penetrates the iron tail in the width direction, the buffer material is easily filled in the entire inside of the through-hole.

In the horseshoe described above, it is preferable that the plurality of through holes are formed at intervals in the extending direction of the iron tail.
According to such a configuration, the shock absorbing property is improved over a wide range in the extending direction of the iron tail. Further, the strength of the iron tail can be ensured as compared with the case where one through hole is formed over a wide range in the extending direction.

In the above horseshoe, the plurality of through holes are preferably female screw holes.
According to such a configuration, a spiral projection is formed on the inner peripheral surface of the through hole, so that the buffer material can be prevented from falling off.

  In the above-mentioned horseshoe, when the through hole is a first through hole, a second groove penetrating a nail groove formed on a ground surface and an outer peripheral surface or an inner peripheral surface of the iron side portion on the iron side portion. It is preferable that a through hole is formed, and the second through hole is filled with a buffer material.

According to such a configuration, the shock absorbing property of the iron side part is improved by the buffer material filled in the second through hole.
In the horseshoe described above, it is preferable that the plurality of second through holes are formed at intervals in the extending direction of the iron side portion.

  According to such a configuration, the shock absorption is improved over a wide range in the extending direction of the iron side portion. Further, the strength of the iron side portion can be secured as compared with the case where one through hole is formed over a wide range in the extending direction.

In the above horseshoe, it is preferable that the diameter of the first through hole is larger than the diameter of the second through hole.
According to such a configuration, since the diameter of the first through-hole is made larger than the diameter of the second through-hole, the first through-hole is filled with a large amount of buffer material, and the buffer material fills the iron tail. Shock absorption can be effectively increased.

  On the other hand, the iron side portion having a nail groove and being thinner than the iron tail portion can improve the shock absorption while securing the strength.

  ADVANTAGE OF THE INVENTION According to the horseshoe of this invention, while being able to suppress generation | occurrence | production of iron fall, the cushion function of an iron tail part can be ensured stably.

The perspective view seen from the lower surface side about one Embodiment of a horseshoe. The perspective view which looked at the horseshoe of the embodiment from the upper surface side. The front view which looked at the horseshoe of the embodiment from the lower surface side. 3A is a sectional view taken along line AA in FIG. 3, and FIG. 3B is a sectional view taken along line BB in FIG.

Hereinafter, an embodiment of a horseshoe will be described with reference to FIGS.
As shown in FIGS. 1 to 3, the horseshoe 1 is substantially U-shaped along the outer diameter of the hoof of the racehorse.
As shown in FIG. 3, the horseshoe 1 includes an iron head 2 located at an intermediate portion in the extending direction, iron side portions 3 located on both sides of the iron head 2 in the extending direction, and an iron side portion 3. And an iron tail 4 located at the tip of the extending direction, and the iron head 2, the iron side part 3, and the iron tail 4 are integrally formed of an aluminum alloy.

  As shown in FIG. 2, on the upper surface of the horseshoe 1, that is, on the outer peripheral edge of the iron head 2 at the foot contact surface 5, there is an iron lip projecting in the thickness direction of the horseshoe 1, that is, in the direction along the outer peripheral edge of the hoof. 6 are formed. The iron lip 6 abuts on the outer peripheral surface of the hoof in a state where the horseshoe 1 is mounted on the hoof, and prevents iron fall.

  As shown in FIGS. 1 and 3, a pair of nail grooves 8 are formed on the lower surface of the horseshoe 1, that is, on the grounding surface 7. Each nail groove 8 is formed along the extending direction from the iron side part 3 to a part of the iron head 2. A plurality of (six in this embodiment) nail holes 9 penetrating to the hoof surface 5 are formed at equal intervals on the bottom surface of each nail groove 8.

  As shown in FIG. 3 and FIG. 4A, each of the iron tails 4 has a plurality (five in the present embodiment) of first through holes 10 penetrating the iron tail 4 in the width direction. They are provided at equal intervals in the extending direction. Each first through hole 10 is a female screw hole. Therefore, a helically extending projection is formed on the inner peripheral surface of the first through hole 10. Each first through hole 10 is filled with a buffer material 11 made of EVA resin (ethylene-vinyl acetate copolymer resin).

  As shown in FIGS. 3 and 4 (b), a plurality (five in the present embodiment) of a plurality of (five in the present embodiment) penetrating between the bottom of each nail groove 8 and the outer peripheral surface of the horseshoe 1 is provided on each iron side portion 3. Two through holes 12 are provided at equal intervals in the extending direction. Each second through hole 12 is a female screw hole. Therefore, a helically extending projection is formed on the inner peripheral surface of the second through hole 12. Each second through hole 12 is filled with a buffer material 11 made of EVA resin, like the first through hole 10. However, the diameter of the second through hole 12 is set smaller than the diameter of the first through hole 10.

  The buffer material 11 filled in the first through-hole 10 and the second through-hole 12 is formed from one end to the other end of the first through-hole 10 and the second through-hole 12 (for example, from the outer peripheral side of the horseshoe 1). Toward the inner circumference).

Next, the operation of the horseshoe 1 will be described.
The upper surface of the horseshoe 1 is applied to the ground surface of the hoof, and a plurality of nails are driven into the hoove from the nail holes 9 in the respective nail grooves 8, so that the horseshoe 1 is fixed to the hoof. Further, the iron head 2 and the iron side part 3 can be fixed to the hoof with an adhesive.

  When the horse runs, the hoof lands sequentially from the heel to the tip of the hoof. At this time, the shock acting on the heel portion is reduced by the cushioning material 11 filled in the first through hole 10 of the iron tail portion 4. Further, the shock acting on the hoof side portion is reduced by the cushioning material 11 filled in the second through hole 12.

Since the iron tail 4 is not fixed to the hoof, it does not inhibit the hoofing action of the hoof.
According to the horseshoe according to the present embodiment described above, the following effects can be obtained.
(1) A first through hole 10 penetrating in the width direction is formed in the iron tail portion 4, and the first through hole 10 is filled with a buffer material 11.

  According to such a configuration, the shock absorbing material of the iron tail 4 is improved because the buffer material 11 is filled over the entire width of the iron tail 4. Further, since the first through hole 10 penetrates the iron tail portion 4 in the width direction, the buffer material 11 is easily filled in the entire inside of the first through hole 10. Therefore, the occurrence of iron fall can be suppressed, and the cushion function of the iron tail 4 can be ensured stably.

  Also, according to the above configuration, unlike conventional horseshoes in which a cushioning material such as rubber is attached to the foot contact surface, not only for horses with weak hoofs, but also for healthy horses with no problem with hooves. Can also be used for the purpose of failure prevention. Further, since the cushioning material is not greatly elastically deformed as in the conventional horseshoes described above, the ground can be strongly kicked up, which contributes to an improvement in traveling speed.

(2) A plurality of first through holes 10 are formed at regular intervals in the extending direction of the iron tail portion 4.
According to such a configuration, the shock absorbing property is improved over a wide range in the extending direction of the iron tail 4. The strength of the iron tail 4 can be ensured as compared with the case where one through hole is formed over a wide range in the extending direction. Variations in shock absorption depending on the position of the iron tail 4 can be suppressed.

(3) The iron side portion 3 is formed with a second through hole 12 penetrating the nail groove 8 formed in the ground surface 7 and the outer peripheral surface of the iron side portion 3. Is filled with a cushioning material 11.
According to such a configuration, the shock absorbing property of the iron side part 3 is improved by the cushioning material 11 filled in the second through hole 12. Since the second through hole 12 penetrates the nail groove 8 and the outer peripheral surface of the iron side portion 3, the buffer material 11 is easily filled in the entire inside of the second through hole 12.

(4) A plurality of second through holes 12 are formed at regular intervals in the extending direction of the iron side portion 3.
According to such a configuration, the shock absorbing property is improved over a wide range in the extending direction of the iron side portion 3. The strength of the iron side part 3 can be secured as compared with the case where one through hole is formed over a wide range in the extending direction. Variations in shock absorption depending on the position of the iron side part 3 can be suppressed.

(5) The diameter of the first through hole 10 is larger than the diameter of the second through hole 12.
According to such a configuration, the diameter of the first through-hole 10 is made larger than the diameter of the second through-hole 12, so that the first through-hole 10 is filled with a large amount of buffer material 11, 11, the shock absorption of the iron tail 4 can be effectively increased.

On the other hand, the horseshoe has the nail groove 8, and the shock absorption of the iron side part 3 which is thinner than the iron tail part 4 can be improved while securing the strength.
(6) The inner peripheral surface of the first through hole 10 and the second through hole 12 are female screw holes.

According to such a configuration, the dropout of the cushioning material 11 can be suppressed by the helical protrusions formed on the inner peripheral surfaces of the through holes 10 and 12.
(7) The buffer material 11 is made of EVA resin. EVA resin is a resin containing no chlorine, and does not generate dioxin even when incinerated. For this reason, the horseshoe 1 can be easily recycled. In addition, since the EVA resin is excellent in elasticity and flexibility, it does not easily become hard even at a low temperature, and can stably secure the cushion function of the iron tail portion 4 even in a cold place. Further, since the EVA resin is lighter in weight than rubber, the weight of the horseshoe 1 can be reduced. Further, since the EVA resin is excellent in durability and weather resistance, the replacement cycle of the horseshoe 1 can be lengthened. Further, since the EVA resin does not contain an environmental hormone, even if the buffer material 11 falls off, it does not adversely affect the environment.

The above embodiment can be modified, for example, as follows.
The shape of the protrusion for suppressing the buffer material 11 from falling off is not limited to a spiral shape, and one or more protrusions may be formed at intervals in the direction in which the first through hole 10 and the second through hole 12 extend. It may be formed. Further, such projections may be omitted, and the inner peripheral surface of the first through hole 10 and the inner peripheral surface of the second through hole 12 may be made smooth.

The plurality of second through holes 12 may be formed at irregular intervals in the direction in which the iron side portion 3 extends.
-The 2nd through-hole 12 may penetrate between the nail groove 8 and the inner peripheral surface of the iron side part 3. Further, the second through holes 12 of the iron side portion 3 and the second through holes 12 of the iron side portion 3 can be formed alternately in the extending direction of the iron side portion 3.

The plurality of first through holes 10 may be formed at irregular intervals in the direction in which the iron tail 4 extends.
-The number of the 1st through-hole 10 and the 2nd through-hole 12 can also be changed suitably.

-The second through-hole 12 may be omitted.
-The diameter of the first through hole 10 may be the same as or smaller than the diameter of the second through hole 12.

  -The buffer material 11 can also be changed to polyurethane resin etc., for example.

  DESCRIPTION OF SYMBOLS 1 ... Horseshoes, 2 ... Iron head, 3 ... Iron side part, 4 ... Iron tail, 5 ... Foot contact surface, 6 ... Iron lip, 7 ... Ground surface, 8 ... Nail groove, 9 ... Nail hole, 10 ... No. 1 through hole, 11 ... cushioning material, 12 ... second through hole.

Claims (4)

A plurality of through holes penetrating in the width direction are formed in the iron tail,
The plurality of through holes are female screw holes, and are formed at intervals from each other in the extending direction of the iron tail,
A horseshoe wherein the plurality of through holes are filled with a cushioning material. The horseshoe according to claim 1,
When the through hole is a first through hole,
In the iron side portion, a nail groove formed in the grounding surface, and a second through hole that penetrates the outer peripheral surface or the inner peripheral surface of the iron side portion is formed,
Horseshoe, wherein the second through hole is filled with a cushioning material.   The horseshoe according to claim 2, wherein the plurality of second through holes are formed at an interval in the extending direction of the iron side portion.   The horseshoe according to claim 2 or 3, wherein a diameter of the first through hole is larger than a diameter of the second through hole.

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