JP3522649B2 - Straight rod-shaped cane with bent part - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a walking stick for exercise.

[0002]

2. Description of the Related Art Canes used for daily activities such as walking are
Although you have to project forward in the direction of travel, the position where you stick the cane is not so far forward, and since the impact force due to sticking the cane is not so great, so that axial force mainly acts on the arm and bending moment does not act, As shown in FIG. 10, a T-shape or an L having an equivalent function
A cane having a character-shaped or U-shaped grip (hereinafter, “grip” is appropriately referred to as “grip”) is used.

However, there are cases in which the cane must be pushed considerably forward in the direction of movement during exercise and in daily activities to maintain the balance of the body or to withstand a large impact force generated by pushing the cane. A typical example of such a case is a walking stick in the case of skiing. In the following, a ski cane (hereinafter appropriately referred to as "ski stock" or "stock") will be described, but it is not limited to this. In the case of skiing, it is necessary to instantly strongly strike the snow surface in order to maintain balance during descent and to trigger rotation, and this strong impact force causes a bending moment in the stock, If the strength is insufficient, the stock will break. Therefore, as the stock, as shown in FIG. 7, a straight bar-shaped stock is used from the stone butt to the grip upper end so that the bending moment is not generated as much as possible.
Some stocks have a slightly curved part in the middle of the straight rod-shaped material of the stock (hereinafter referred to as the "shaft"), but this is a stock for downhill use that winds from the stock along with the body of the skier. Is to reduce the resistance of the stock, and the function of the stock is not different from that of the straight bar stock.

The grip of the ski pole is different from the grip of the cane (FIG. 10) used during the daily walking described above, and the one shown in FIGS. 8 and 7 is used. The difference in these grips is that in the case of ski poles, it is necessary to absorb the strong impact force that occurs during skiing, and this impact force on the wrist needs to be elastically absorbed as a moment mechanically using the entire arm. Due to However, this ski pole grip has many drawbacks:

[0005] When skiing down, it is necessary to thrust the stock considerably forward of the body in order to provide a chance for rotation. If the arm joint is bent, the stock stake will face forward, but it will be necessary to extend the arm because the distance from the position where the stock must be struck becomes long, but if the arm is extended, the stake will move forward. It is a contradictory movement of not going. Therefore, in order to poke the stock forward, it is essential to bend the wrist with the arm extended as much as possible, but this movement itself is unnatural due to physical structure as described below. This is a movement, and it is a tough action especially for ski beginners. The wrist is angle B in FIG.
As shown in Fig. 3, when the hand is bent downward, it can be bent at about 50 degrees, so bending the wrist in this direction is seen in daily activities and many exercises such as kendo. On the other hand, on the contrary, when the wrist is bent upward (angle A in Fig. 9), it is possible to bend only about 22 degrees and about half or less, so the behavior of actively bending the wrist in this direction is not enough. I can't. However, in the case of skiing, the skier must quickly slam the stock into a proper position in the direction of the descent, if necessary.
This means that the wrists must be bent upwards to support the load, with the arm extended considerably, and it must also withstand large shock loads. Also, at high speeds, the body tends to be backwards, and in deep snow, it becomes a backward leaning posture, so it is difficult to thrust forward even though it becomes more necessary to thrust the stock forward. Which means the need to bend the wrist further upwards. As described above, the skier is often affected by tendonitis of the wrist because of the unnatural movement required for the body structure.

[0006] Since it is necessary to poke the stone stake of the stock considerably forward in the traveling direction, it is often the case that the thumb, forefinger, middle finger or ring finger is grasped and the little finger or ring finger is kept from exerting force. Can be seen. In this case, the stock cannot be grasped sufficiently, and there is a possibility that the stock cannot be swung into an appropriate position quickly. Also, in order to deal with the load on the stock, it is necessary to increase the frictional force generated between the grip and the palm due to the gripping force of the grip, but it is difficult to secure the necessary gripping force with such a gripping method. Therefore, a sufficient frictional force cannot be obtained, and a large load on the stock cannot be endured.

In order to reduce the burden of unnatural movements for the body that the wrist must be bent excessively upward, as shown in FIG. 11, it is about 3 to 8 cm away from the lower end of the grip toward the stone tip direction. It is also conceivable to bend the shaft (hereinafter referred to as "below the grip") (hereinafter, this type of stock is referred to as "grip lower bending stock"). However, in this grip lower bending stock, the shaft section tends to deviate from a circle to an elliptical shape due to bending, which reduces the second moment of area and reduces the strength of the stock itself. Since the generated bending moment acts, a large reduction in the load bearing capacity of the stock at the bent portion is unavoidable. For this reason, the bent portion of the lower part of the grip is likely to be cut, and when the stock is broken, there is always a fear of damaging the body, and it is impossible to wipe it off.

In addition, since the shaft of the grip lower bending stock is bent below the grip, if the grip is slightly squeezed, the position of the stone stake will greatly swing to the left and right, and the position of the stone stake will not be constant. There are drawbacks. In addition, when the stock is rotated around the grip axis, the shaft is bent below the grip, which makes the stock feel more uncomfortable than the normal stock.

Since the bending angle A of the wrist shown in FIG. 9 varies from person to person, it is desirable that the bending angle of the shaft be a bending angle corresponding to the individual difference. Due to the above problems, it is difficult to set the bending angle to an angle having a size as necessary.

In a normal stock, the extension line of the force point of the force applied to the arm from the stone butt through the shaft passes through the palm portion, but in the grip lower bending stock, the extension line of the power point passes through the forearm portion. Therefore, a feeling of strangeness is inevitably generated when the stock is operated.

Since a normal stock has a straight bar shape, it is easy to pack and does not hinder transportation. However, in the lower grip stock of the grip, since the distance between the position of the bent part and the upper end of the grip is long, the stock is not straight. The gap is large, it is difficult to pack, and there are many obstacles to transportation.

In the grip lower bending stock, it is difficult to print around the side surface of the stock after the bending work because the bending part of the shaft is visible, and on the other hand, printing before the bending work damages the printing during the bending work. easy.

In the grip lower bending stock, since the distance from the bending portion to the upper end of the shaft is long, an extra moment acts on the bending portion during press fitting / fitting of the grip during stock processing, which increases the difficulty of press fitting.

[0014]

The present invention was devised under the circumstances as described above, and does not force the bending of the wrist and reduces the burden on the wrist. To provide a cane that allows the thrust to be quickly extended to a desired predetermined position considerably forward of the traveling direction by devising a grip corresponding to the grip of the cane and the shaft of the cane. Is the task.

[0015]

In order to solve the above problems, the present invention takes the following technical means.

A wand made of a straight rod-shaped material, which constitutes a part of the invention described in claim 1 of the present application, is provided with a bent portion in a gripping portion of the wand so that the bending of the wrist is not forced. The feature is that the burden on the wrist is reduced, and the stone stake can be quickly extended to a desired predetermined position in the forward direction. Of course, it goes without saying that the bending angle of the bent portion can be appropriately set depending on the skier's skill level, age, sex, and the like.

Further, the invention according to claim 1 of the present application is characterized in that the bent portion of the grip having a bent portion corresponding to the depression of the grasped palm and the bent portion of a straight rod-shaped cane provided with the bent portion of 0016 are provided. By making the cane have a bending effect in the palm by fitting it, the burden on the wrist is reduced without forcing the bending of the wrist, and the stone stake is set to the desired position far in front of the traveling direction. It is characterized by providing a robust and effective cane that can be quickly extended to the position. Of course, in this case as well, it is needless to say that the angle of the bent portion can be appropriately set in consideration of the skill level, age, sex, etc. according to the depression of the palm.

The invention according to claim 2 of the present application provides a simple and effective wand by fitting a straight rod-shaped wand into a grip having a bent portion corresponding to the hollow of the held palm. Characterize.

According to the third aspect of the present invention, the angle of the upper end surface of the grip is adjusted in the walking operation in which the palm is pressed against the upper end surface (59 in FIG. 4) of the grip to push the stock backward to increase the walking power. By making it perpendicular to the line passing through the point on the upper end surface and the butt, the force applied from the arm to the upper grip on the grip prevents the bending moment from being generated as much as possible on the cane, so that it can effectively act on the butt. It is characterized by

The invention according to claim 4 of the present application is characterized in that the grip is provided with a mechanism capable of rotating and fixing around the axis of the shaft, so that a cane more suitable for individual stock users can be provided. To do.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the invention in the case of covering claims 1 to 4 of the invention.

FIG. 2 shows an embodiment of a straight rod-shaped cane having a bent portion which constitutes a part of the present invention. Figure 2a shows
The figure shows a bent part formed on the grip of the palm, which is processed from a straight rod-shaped material. Further, the bent portion may be formed on a part of the side surface of the straight rod-shaped material as shown in FIG. 2b. It is desirable that the bent portion be processed so that the strength of the straight bar is not compromised as much as possible, but it does not have to be the same as the strength before processing, and the cross section after processing is always before processing. For example, the cross section before processing may be a circular cross section before processing, or the cross section after processing may be an elliptical / oval cross section, and in particular, the upper end may be rectangular. The bending angle is about 5 ° to 30 °.

The embodiment of the invention corresponding to claim 1 of the present invention is achieved by fitting a combination grip (21) in FIG. 3 on the shaft (11) shown in FIG. FIG. 3a shows a case where bent portions are provided on both the palm portion and the finger portion of the grip. In this case, it is possible to easily manufacture a product having several bending angles so that the user does not feel a strange feeling when grasped. FIG. 3b shows a case where a bent portion is provided only on the palm portion of the grip,
This is because the bending effect can be provided to some extent even if only the palm portion of the grip is provided with the bending portion. A bending angle of about 5 ° to 30 ° is used, and if it is too large, a feeling of discomfort increases. Generally, it is desirable to use the degree of depression when holding the palm as a standard. The shaft and the grip may be coupled by simply press-fitting or fitting, but may be performed by an adhesive, bolts, nuts, or the like. In addition, a hand leather or a ring is usually attached to the above stock in order to enhance the function of the stock.

In the embodiment of the invention corresponding to claim 2 of the present invention, a grip (21) shown in FIG. 3 is attached to a straight rod-shaped shaft.
It is achieved by combining and fitting. In this case, the coupling between the shaft and the grip is the same as in 0024 above.

An embodiment of the invention corresponding to claim 3 of the present invention is shown in FIG. When walking on skis, the palm is pushed to the upper end surface of the grip and the stock is pushed out backward.At this time, if the direction of the force pushing the upper end surface of the grip is directed toward the stone foot, the bending moment generated on the cane will be reduced. The walking power can be increased by reducing the amount. This is made possible by making the upper end surface of the grip perpendicular to a straight line passing through the point on the upper end surface and the stone head, and the situation is shown in FIG.

An embodiment of the invention corresponding to claim 4 of the present invention is shown in FIGS. There is a case where it is desired to adjust the position of the stone tip when gripping the grip (21) to the left or right with respect to the traveling direction (the shaft (11) shown by the solid line, the broken line, and the one-dot chain line in FIG. 5). In this case, it would be convenient if the grip could be easily rotated and fixed around the axis of the shaft.
As the fixing method after this rotation adjustment, the stopper (56) is pushed into the upper end of the shaft to fix the stopper and the grip (21) with an adhesive or the like, or an opening is provided in the shaft to fix the bolt (52). A method of fixing with a nut (53) is adopted. The stoppers and the opening portions of the bolts and nuts are preferably filled with plugs (54, 55, 57).

[0028]

The present invention is carried out in the form as described above, and has the remarkable effects as described below.

In the conventional stock, it was difficult to push the stock to a precise position in front of the body due to the physical structure. However, the stock according to the present invention (hereinafter referred to as "the present stock") is a grip portion of the stock. Since the butt is bent so that it faces forward, you can easily poke the stock at the desired position.

Since it is necessary to poke the stone stake of the stock considerably forward in the traveling direction, the stock is gripped only with the thumb, forefinger, middle finger or ring finger, and the little finger or ring finger is often removed from the grip. As you can see, in this case it is not possible to fully grasp the stock. However, in the stock of the present application, since the bent portion of the grip is bent so as to fit the shape of the hollow of the gripped palm, the stock can be grasped with all fingers, and a sufficient grasping force of the stock can be expected.

Further, in order to cope with the load applied to the stock, it is necessary to increase the frictional force generated between the grip and the palm due to the gripping force of the grip, but the usual gripping method described in 0030 of the stock is sufficient. Since it is not possible to obtain a sufficient grasping force, the frictional force cannot be increased and the load cannot be withstood, which is one of the causes of imbalance. However, since the stock of the present application is bent in the grip, the point of action of the force applied from the shaft to the arm is in the thumb ball portion of the palm, and therefore the necessary frictional force itself is small,
With a little grip, you can withstand the load sufficiently and enjoy comfortable downhill riding.

The bending lower bending stock has a shaft whose cross section tends to deviate from a circular shape to an elliptical shape, which reduces the second moment of area and reduces the strength of the stock itself. In addition, since a bending moment generated by bending is applied, the risk of breakage at the bent portion is further increased, and the fear of damaging the body when cut is inevitably increased. In order to prevent this and have the same strength as conventional stock, not only the bending part but also the strength of the whole stock must be increased, which causes an increase in stock weight and an increase in production cost. become. However, since the stock of the present application is a stock that is bent within the grip part, the deterioration of the shaft strength is minimal, and the rigidity of the grip restricts the cross-sectional shape of the shaft, so the cross-section changes during use. It is difficult to reduce the moment of inertia of area, and since no additional bending moment is generated, the risk of breakage is low. Furthermore, since the rigidity of the grip itself is added, the strength of the bent portion is stronger than the shaft of the portion without the grip. Therefore,
The stock of the present application has the same strength as the conventional straight stock (Fig. 7).

In the grip lower bending stock, only the shaft is bent below the grip. Therefore, if the grip is re-griped, the position of the stone tip tends to swing to the left and right, and the position of the stone tip is not constant. . On the other hand, in the stock of the present application, since the grip is bent so as to fit the shape of the hollow of the gripped palm, even if it is gripped again, it is gripped again so that it fits the palm, so the position of the stone tip is held constant. Easy and stable stock operation becomes possible. In addition, since the shaft under the grip is bent in the lower part of the grip, the feeling of discomfort is greater when the stock is swung than the normal stock. Since it has a straight rod shape, even when the stock is swung, there is almost no discomfort compared to the normal stock.

Since there is an individual difference in the bending angle A of the wrist shown in FIG. 7, it is desirable that the bending angle of the shaft be a bending angle according to the individual difference, but in the case of the grip lower bending stock, there is a difference in strength. It is difficult to set the bending angle freely from the problem. On the other hand, in the stock of the present application, since the shaft is bent in the grip and there is almost no decrease in strength, it is possible to provide a bent portion in a wide range of angles, and also to increase or decrease the bending angle to some extent in the grip itself. Therefore, it is possible to easily provide the stock having the bending angle according to the individual difference.

In the normal stock, the extension line of the force point of the force applied to the arm from the stone head through the shaft passes through the palm portion, but in the grip lower flexing stock, the extension line of the force point passes through the forearm portion. Therefore, a feeling of strangeness is inevitably generated when the stock is operated. on the other hand,
In the stock of the present application, since it is bent in the grip, the point of action of the force point applied to the arm from the stone butt through the shaft is at the thumb ball portion of the palm, and therefore the ordinary force that does not bend the wrist Because it can be easily received in the state of, it does not cause discomfort with the conventional stock and rarely causes tendonitis.

Since a normal stock has a straight bar shape, it is easy to pack and does not hinder transportation. However, in the grip lower bending stock, the distance from the straight bar shape is large because the distance from the bent portion to the upper end of the shaft becomes long. However, it is difficult to pack, that is, it is difficult to put it in a ski case, and there are many obstacles to transportation. On the other hand, the stock of the present application has a short distance from the bent portion to the upper end of the shaft and does not impair the linearity. Therefore, the stock can be stored in the ski case without much difference from the conventional stock, and there is no hindrance in transportation.

In the grip lower bending stock, it is difficult to print around the side surface of the stock after the bending work because the bending portion of the shaft is visible, and on the other hand, printing before the bending work damages the printing during the bending work. easy. On the other hand, in the stock of the present application, since the bent portion is covered by the grip portion, printing of the bent portion is unnecessary, and printing is easy because only the straight portion of the shaft needs to be printed, and cost reduction is achieved. Can be planned.

In the grip lower bent stock, since the distance from the bent portion to the upper end of the shaft is long, an extra moment acts on the bent portion at the time of press fitting / fitting of the grip during stock processing, and the difficulty of press fitting increases. on the other hand,
Since the stock of the present application has a short distance from the bent portion to the upper end of the shaft, it has an advantage that it can be easily press-fitted as compared with the grip lower bent stock.

[Brief description of drawings]

FIG. 1 is an external view showing a grip portion. (Example)

FIG. 2 is an external view showing a processing state of an upper end portion of a straight rod-shaped cane.

FIG. 3 is an external view showing a bent portion of a grip. Figure 3
3A shows a case where bent portions are provided on both the palm portion and the finger portion, and FIG. 3B shows a case where bent portions are provided only on the palm portion.

FIG. 4 is an external view showing that an upper end surface of the grip is perpendicular to a straight line passing through a point on the upper end surface and a stone stake.

FIG. 5 is a plan view seen from the upper end surface of the grip.

6a is a plan view seen from the upper end surface of the grip, FIG.
b is a vertical sectional view of the grip.

FIG. 7 is an external view showing a conventional ski pole.

FIG. 8 is an external view showing a state where a conventional ski pole is gripped.

FIG. 9 is an external view showing a bendable range of a palm.

FIG. 10 is an external view showing a walking stock and a grip state thereof.

FIG. 11 is an external view showing a grip lower bending stock.

[Explanation of symbols]

11 shaft 21 Grip 51 Grip bend 52 volt 53 nuts 54 plug 55 plug 56 Stopcock 57 plugs 59 grip top

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Claims (4)

(57) [Claims] 1. A grip having a bent portion in the gripped portion is configured so that the bent portion of the grip matches the depression of the gripped palm, and the bending point of the bent portion of the grip is a straight rod-shaped cane having the bent portion. A cane, in which a cane is fitted to the grip so as to match the bending point of the bent portion, and the direction of the lower part of the bent portion of the grip and the direction of the cane are the same direction. 2. A grip having a bent portion in a gripped portion is configured so that the bent portion of the grip matches the depression of the grasped palm, and the direction of the lower portion of the bent portion of the grip and the direction of the straight rod-shaped material are the same direction. So that a straight rod-shaped material is fitted to the lower part of the grip. The upper end face of wherein grip is, wand of claim 1 and claim 2, characterized in that it is perpendicular to a straight line through the points and ferrule on the upper surface 4. A cane according to claim 3 , comprising a grip having a mechanism capable of rotating and fixing about the axis of a straight rod-shaped material.