JP2020195572A - Stick - Google Patents

Abstract

To provide a stick, when any one of a lower grip part or an upper grip part is damaged or fouled, configured to just replace a damaged component, etc., capable of reducing a repair cost and increasing a variation of design of the grip.SOLUTION: A grip 12 is vertically divided into two, and includes a lower grip part 17 removably attached via a connector 16 to an upper end of a shaft 11, and an upper grip part 18 removably attached to the upper face of the lower grip part. The connector includes a lower shaft portion 16a fixed to the upper end of the shaft and having a shaft diameter corresponding to the size of the shaft, and an upper shaft portion 16b provided integrally with the lower shaft portion and extending upward from the upper face thereof. A cylindrical hole 17 is formed in the lower grip part. The lower grip portion is attached to the upper shaft portion by a first screw 21, with the cylindrical hole fitted in the upper shaft portion.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cane in which a grip gripped by the user is removably attached to the upper end of the shaft.

Conventionally, a grip replacement stick in which a grip is detachably attached to an upper portion of a shaft has been disclosed (for example, Patent Document 1 (claim 1, paragraph [0013], [0017], FIGS. 1 and 3 to 3). See 5).). In this grip replacement stick, the grip has an inner diameter that allows one end of the shaft to be inserted toward the shaft side, and a flange portion is formed on the outer circumference and a notch portion is formed on the lower end. It is provided with a ring that is loosely fitted and has a collar portion at the upper end and a locking portion that can be locked, and a female screw portion that is formed at the inner circumference. Further, the shaft has an outer diameter that can be inserted into the pipe portion and has a convex portion formed on the outer circumference that can be engaged with the notch portion, and the shaft is formed on the outer periphery below the insertion portion and can be screwed with the female screw portion. It has a male threaded portion. Further, by engaging the notch of the pipe portion with the convex portion of the insertion portion inserted into the pipe portion, the movement of the grip in the rotational direction with respect to the shaft is restricted, and the female thread portion of the ring is inserted into the pipe portion. By screwing it with the male threaded portion of the shaft, the vertical movement of the grip with respect to the shaft is restricted. Further, the insertion portion is provided with a click ball urged from the inside to the outside so that a part thereof protrudes from the outer peripheral surface, and the pipe portion is formed with a recess that can be engaged with the click ball. As a result, when the cutout portion of the pipe portion is engaged with the convex portion of the insertion portion inserted into the pipe portion, the click ball is configured to engage with the concave portion.

With the grip replacement stick configured in this way, the grip can always be attached to the shaft in a fixed orientation, and the grip and shaft rotate freely during use, causing the grip and shaft to loosen. There is no such thing, and the grip and shaft can be easily attached and detached.

Japanese Patent No. 5716940

However, in the grip replacement stick shown in the conventional patent document 1, the portion of the grip that the user grips (hereinafter referred to as the grip body) is composed of a single part and is integrally formed with the pipe portion. Furthermore, since the ring has a structure that does not come off from the pipe part, if a part of the grip body is damaged or soiled, the grip body, the pipe part and the ring must be replaced, which increases the repair cost and the grip body. There was a problem that the design was limited. Further, in the grip replacement stick shown in the above-mentioned conventional patent document 1, since the grip body is composed of a single part, only the part of the grip body that touches the palm of the user is made of a soft and non-slip material. There is also a problem that the cane is not easy to use by the user, and if the grip body is made entirely of a soft and non-slip material, the strength of the grip body is reduced. Further, in the grip replacement stick shown in the above-mentioned conventional patent document 1, the female threaded portion of the ring screwed to the male threaded portion of the shaft is loosened, and the ring is removed from the shaft. Since the grip can be easily replaced even by a user who does not have a stick, there is a possibility that the stick after the grip replacement does not satisfy a predetermined strength or the like without proper replacement work. Further, in the grip replacement stick shown in the conventional patent document 1, the grip is attached to the shaft by engaging the notch of the pipe portion with the convex portion of the insertion portion and engaging the click ball with the concave portion. On the other hand, the structure is such that the notch and the convex portion are always mounted in a fixed direction, the contact area between the notch and the convex portion is small, and the contact area between the click ball and the concave portion is small. The gap between the two is likely to increase, and there is a risk of rattling of the grip shaft.

The first object of the present invention is that if either the lower grip portion or the upper grip portion is damaged or soiled, the damaged parts can be replaced, the repair cost can be reduced, and the grip design can be varied. It is to provide a cane that can be increased. A second object of the present invention is that only the part of the grip that touches the palm of the user can be made of a soft and non-slip material, and the usability can be improved without reducing the strength of the grip. Is to provide. A third object of the present invention is to provide a cane in which a cane after grip replacement can always satisfy a predetermined strength or the like by making it difficult for a cane user who is not an expert in cane repair to replace the grip. To do. A fourth object of the present invention is to provide a cane capable of suppressing rattling of the grip shaft.

The first aspect of the present invention is that, as shown in FIGS. 1, 2, 4 and 11, the shafts 11 and 14 and the upper ends of the shafts 11 and 14 are detachably attached and gripped by the user. In a cane provided with a grip 12 and a stone tip 13 fitted to the lower ends of the shafts 11 and 14 and capable of contacting the ground or floor, the grip 12 is divided into upper and lower parts, and the upper ends of the shafts 11 and 14 The lower grip portion 17 is detachably attached via the fittings 16 and 19, and the upper grip portion 18 is detachably attached to the upper surface of the lower grip portion 17, and the fittings 16 and 19 are shafts. The lower shaft portions 16a and 19a fixed to the upper ends of the shafts 11 and 14 and having a shaft diameter corresponding to the thickness of the shafts 11 and 14 and the lower shaft portions 16a and 19a are integrally provided so as to extend upward from the upper surface thereof. The lower grip portion 17 has a cylinder hole 17e that can be fitted into the upper shaft portions 16b and 19b of the couplers 16 and 19, and the lower grip portion 17 has a cylinder hole 17e. Is attached to the upper shafts 16b and 19b by the first screw 21 in a state where the upper grip portion 18 is fitted into the upper shaft portions 16b and 19b, and the upper grip portion 18 is placed on the upper surface of the lower grip portion 17. It is characterized in that it is attached to the lower grip portion 17 by the second screw 22.

The second aspect of the present invention is an invention based on the first aspect, and further extends downward and inward from the upper surface of the upper shaft portions 16b and 19b as shown in FIGS. 1, 2 and 4. The first screw holes 16c and 19c are formed, and the first screw through hole 17f through which the first screw 21 can be inserted is formed in the back wall of the cylinder hole 17e of the lower grip portion 17, and the lower grip portion 17 is formed into a cylinder hole. With the 17e fitted into the upper shaft portions 16b and 19b, the first screw 21 is inserted into the first screw through hole 17f from above and screwed into the first screw holes 16c and 19c to screw the upper shaft portion 16b. , 19b.

A third aspect of the present invention is an invention based on the first or second aspect, and as shown in FIGS. 1, 2 and 4, the upper grip portion 18 is located above and inside the lower surface of the upper grip portion 18. An extending second screw hole 18e is formed, and a second screw through hole 17g extending upward from the lower surface thereof and capable of inserting the second screw 22 is formed in the lower grip portion 17, and the upper grip portion 18 is formed by the upper grip portion. With the 18 mounted on the upper surface of the lower grip portion 17, the second screw 22 is inserted into the through hole 17g for the second screw from below and screwed into the second screw hole 18e to be attached to the lower grip portion 17. It is characterized by being able to be.

The fourth aspect of the present invention is the invention based on the first or second aspect, and as shown in FIGS. 13 and 14, the head 52a of the second screw 52 is inside the upper grip portion 48. The male screw portion 52b of the second screw 52 is projected from the lower surface of the upper grip portion 48, and extends downward from the upper surface of the lower grip portion 47, and the male screw portion 52b of the second screw 52 can be inserted into the lower grip portion 47. A hole 47g is formed, and the upper grip portion 48 inserts the second screw 52 into the through hole 47g for the second screw from above in a state where the upper grip portion 48 is placed on the upper surface of the lower grip portion 47 and is second. The nut 55 is screwed into the male screw portion 52b of the second screw 52 protruding from the screw through hole 47g, so that the nut 55 can be attached to the lower grip portion 47.

The fifth aspect of the present invention is an invention based on the first or second aspect, and as shown in FIGS. 15 and 16, the locking claw 78e projects downward from the lower surface of the upper grip portion 78. A locked hole 77g to which the locking claw 78e can be locked is formed in the lower grip portion 77, and the upper grip portion 78 engages with the upper grip portion 78 placed on the upper surface of the lower grip portion 77. It is characterized in that it can be attached to the lower grip portion 77 by locking the claw 78e to the locked hole 77g.

The sixth aspect of the present invention is an invention based on the second aspect, and as shown in FIGS. 1 and 2, the lower grip portion 17 is formed of plastic, and the lower grip portion 17 and the upper grip portion 18 are formed. A metal reinforcing plate 24 having a first screw through hole 24a extending in the longitudinal direction of the grip 12 and communicating with the first screw through hole 17f is interposed between the and the lower grip portion 17. By passing the first screw 21 through the through hole 24a for the first screw and the through hole 17f for the first screw and screwing them into the first screw holes 16c and 19c, the first screw 21 can be attached to the fittings 16 and 19 together with the reinforcing plate 24. It is characterized by.

The seventh aspect of the present invention is an invention based on the first aspect, and as shown in FIG. 2, the shaft diameters of the upper shaft portions 16b and 19b are the same as each other, and the lower shaft portions 16a and 19a A plurality of types of connecting tools 16 and 19 having different shaft diameters are prepared, and among these connecting tools 16 and 19, the connecting tools 16 and 19 that can be fixed to the shafts 11 and 14 are selected.

The eighth aspect of the present invention is an invention based on any one of the first to fifth aspects, and as shown in FIGS. 1 and 4, the upper grip portion 18 is attached to the lower grip portion 17. It is characterized in that it is composed of a base portion 18a made of hard plastic and a surface layer portion 18b made of an elastomer that covers the upper surface of the base portion 18a.

The ninth aspect of the present invention is the invention based on the third aspect, and as further shown in FIGS. 1 and 4, the second screw inserted into the second screw through hole 17g of the lower grip portion 17. The head portion 22a of the 22 is immersed in the counterbore hole 17h for the second screw formed in the lower grip portion 17, and the rubber stopper 23 is press-fitted into the counterbore hole 17h for the second screw.

The tenth aspect of the present invention is the invention based on the fourth aspect, and as shown in FIGS. 13 and 14, the nut 55 screwed into the male threaded portion 52b of the second screw 52 is a lower grip. It is characterized in that it is immersed in the nut counterbore hole 47h formed in the portion 47, and the rubber stopper 53 is press-fitted into the nut counterbore hole 47h.

The eleventh aspect of the present invention is the invention based on the fifth aspect, and as shown in FIGS. 15 and 16, the locking claw 78e inserted into the locked hole 77g of the lower grip portion 77 It is accommodated in the locking claw counterbore hole 77h formed in the lower grip portion 77, and the rubber stopper 83 is press-fitted into the locking claw counterbore hole 77h.

The twelfth aspect of the present invention is an invention based on the ninth aspect, further characterized in that the counterbore for the second screw or the counterbore for the nut is sealed with an adhesive sheet.

A thirteenth aspect of the present invention is an invention based on the tenth aspect, further characterized in that a counterbore for a nut is sealed with an adhesive sheet.

The fourteenth aspect of the present invention is an invention based on the eleventh aspect, and is characterized in that the counterbore for the locking claw is further sealed with an adhesive sheet.

The fifteenth aspect of the present invention is an invention based on the first or second aspect, and further, as shown in FIGS. 2, 7 and 10, the upper shaft portions 16b, 19b of the couplers 16, 19 Shaft-side detent portions 16d and 19d having an oval or polygonal cross section are formed in at least a part thereof, and correspond to the shaft-side detent portions 16d and 19d in at least a part of the cylinder hole 17e of the lower grip portion 17. A hole-side detent portion 17m having a shape is formed, and the hole-side detent portion 17m is configured to be fitted into the shaft-side detent portions 16d and 19d.

In the cane of the first aspect of the present invention, the lower grip portion is attached to the upper shaft portion by the first screw in a state where the tubular hole of the lower grip portion is fitted into the upper shaft portion of the connector, and the upper grip portion is attached to the lower grip portion. Since the upper grip part is detachably attached to the lower grip part while it is placed on the upper surface of the part, even if either the lower grip part or the upper grip part is damaged or soiled, only the damaged parts are replaced. All you have to do is. As a result, the repair cost can be reduced. In addition, by changing the color of the lower grip portion and the upper grip portion, it is possible to increase the variation of the grip design.

In the cane according to the second aspect of the present invention, with the tubular hole of the lower grip portion fitted into the upper shaft portion of the connector, the first screw is inserted into the through hole for the first screw from above to form the first screw hole. Since the lower grip portion is attached to the upper shaft portion by screwing into, the lower grip portion can be firmly attached to the shaft. In addition, if the lower grip part is damaged or soiled, it is only necessary to replace this lower grip part, so that the repair cost can be reduced.

In the cane of the third aspect of the present invention, with the upper grip portion placed on the upper surface of the lower grip portion, the second screw is inserted into the through hole for the second screw from below and screwed into the second screw hole. As a result, since the upper grip portion is attached to the lower grip portion, the head of the first screw is located between the lower grip portion and the upper grip portion and cannot be visually recognized from the outside, and the head of the second screw is the lower grip portion. It is located on the underside of the cane and is difficult to see from the outside. As a result, the appearance of the grip is hardly impaired. Further, as described above, even if either the lower grip portion or the upper grip portion is damaged or soiled, only the damaged parts need to be replaced, so that the repair cost can be reduced and the lower grip portion and the upper grip portion and the upper grip portion can be replaced. By changing the color of the grip part, the variation of the grip design can be increased.

From the fourth aspect of the present invention, when the upper grip portion is placed on the upper surface of the lower grip portion, the second screw is inserted into the through hole for the second screw from above, and the second screw protrudes from the through hole for the second screw. Since the upper grip portion is attached to the lower grip portion by screwing the nut into the male screw portion of the screw, the head of the first screw is located between the lower grip portion and the upper grip portion and cannot be visually recognized from the outside. The nut is located on the underside of the lower grip and is difficult to see from the outside. As a result, the appearance of the grip is hardly impaired. Further, as described above, even if either the lower grip portion or the upper grip portion is damaged or soiled, only the damaged parts need to be replaced, so that the repair cost can be reduced and the lower grip portion and the upper grip portion and the upper grip portion can be replaced. By changing the color of the grip part, the variation of the grip design can be increased.

The fifth aspect of the present invention is an invention based on the first or second aspect, and as shown in FIGS. 15 and 16, the upper grip portion is placed on the upper surface of the lower grip portion, and the locking claws are placed. Since the upper grip portion is attached to the lower grip portion by locking the lock in the locked hole, the head of the first screw is located between the lower grip portion and the upper grip portion and cannot be visually recognized from the outside. The claw is located on the lower surface of the lower grip and is difficult to see from the outside. As a result, the appearance of the grip is hardly impaired. Further, as described above, even if either the lower grip portion or the upper grip portion is damaged or soiled, only the damaged parts need to be replaced, so that the repair cost can be reduced and the lower grip portion and the upper grip portion and the upper grip portion can be replaced. By changing the color of the grip part, the variation of the grip design can be increased.

In the cane of the sixth aspect of the present invention, the lower grip portion is made of plastic, and the first screw extending in the longitudinal direction of the grip between the lower grip portion and the upper grip portion and communicating with the through hole for the first screw. A lower grip is provided by interposing a metal reinforcing plate on which a through hole is formed, passing the first screw through the through hole for the first screw and the through hole for the first screw, and screwing it into the first screw hole. Since the part is attached to the connector together with the reinforcing plate, even if the lower grip part is made of plastic, the predetermined strength required for the grip can be secured.

In the cane according to the seventh aspect of the present invention, a plurality of types of connecting tools having the same upper shaft diameter and different lower shaft diameters are prepared and fixed to the shaft among these connecting tools. Since a possible connector is selected, grips of the same shape can be attached to shafts of different thicknesses. As a result, the degree of freedom in the combination of the shaft and the grip is increased, so that the design variation is widened.

In the cane of the eighth aspect of the present invention, since the upper grip portion is composed of a base made of hard plastic attached to the lower grip portion and an elastomer surface layer portion covering the upper surface of the base portion, it is used among the grips. Only the part that touches the palm of the person can be made of a soft and non-slip material. As a result, the usability of the cane by the user can be improved without lowering the strength of the grip.

In the cane of the ninth aspect of the present invention, the head of the second screw inserted into the through hole for the second screw of the lower grip portion is immersed in the counterbore hole for the second screw of the lower grip portion, and this second screw is inserted. Since the rubber stopper is press-fitted into the counterbore for the screw, it becomes difficult for a cane user who is not an expert in cane repair to replace the grip. As a result, since the cane repair specialist replaces the grip, the cane after the grip replacement can always satisfy a predetermined strength or the like. Further, since the head of the second screw cannot be visually recognized from the outside, the appearance of the grip can be improved.

From the tenth aspect of the present invention, the nut screwed into the male thread portion of the second screw is immersed in the nut counterbore hole formed in the lower grip portion, and the rubber stopper is press-fitted into the nut counterbore hole. As a result, it becomes difficult for a cane user who is not an expert in cane repair to replace the grip, as described above. As a result, the cane repair specialist replaces the grip, so that the cane after the grip replacement can always satisfy a predetermined strength or the like. Moreover, since the nut cannot be seen from the outside, the appearance of the grip can be improved.

From the eleventh aspect of the present invention, the locking claw inserted into the locked hole of the lower grip portion is housed in the locking claw counterbore hole formed in the lower grip portion, and the locking claw seat is accommodated. Since the rubber stopper is press-fitted into the hole, it becomes difficult for a cane user who is not an expert in cane repair to replace the grip, as described above. As a result, since the cane repair specialist replaces the grip, the cane after the grip replacement can always satisfy a predetermined strength or the like. In addition, since the locking claws cannot be seen from the outside, the appearance of the grip can be improved.

In the cane of the twelfth to fourteenth viewpoints of the present invention, the counterbore for the second screw, the counterbore for the nut, or the counterbore for the locking claw is sealed with an adhesive sheet, and thus the cane is not an expert in repairing the cane. Replacing the grip by the cane user becomes even more difficult. As a result, similarly to the above, since the cane repair specialist replaces the grip, the cane after the grip replacement can always satisfy a predetermined strength or the like. Further, since the counterbore hole for the second screw, the counterbore hole for the nut, or the counterbore hole for the locking claw cannot be visually recognized from the outside, the appearance of the grip can be further improved.

In the cane according to the fifteenth aspect of the present invention, a shaft-side detent portion having an oval or polygonal cross section is formed in at least a part of the upper shaft portion of the connector, and at least one of the cylinder holes of the lower grip portion. A hole-side detent portion having a shape corresponding to the shaft-side detent portion is formed in the portion, and the hole-side detent portion can be fitted into the shaft-side detent portion. The contact area with the part is relatively large. As a result, rattling of the grip shaft with respect to the shaft can be suppressed.

FIG. 12 is a sectional view taken along line AA of FIG. 12 showing a cane according to the first embodiment of the present invention. It is sectional drawing corresponding to FIG. 1 which shows the state just before attaching the lower grip part of the cane to a connector. It is sectional drawing corresponding to FIG. 1 which shows the state immediately after attaching the lower grip part of the cane to a connector. It is sectional drawing corresponding to FIG. 1 which shows the state just before attaching the upper grip part of the cane to the lower grip part. It is a view of the arrow of part B of FIG. It is a view of arrow C of FIG. It is a view of the arrow of part D of FIG. It is an arrow view of part E of FIG. It is the F part arrow view of FIG. FIG. 11 is a cross-sectional view taken along the line GG of FIG. It is a view of arrow H of FIG. FIG. 11 is an arrow view of FIG. It is sectional drawing corresponding to FIG. 4 which shows the cane of the 2nd Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the cane. It is sectional drawing corresponding to FIG. 4 which shows the cane of the 3rd Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which shows the cane.

Next, a mode for carrying out the present invention will be described with reference to the drawings.

<First Embodiment>
As shown in FIGS. 11 and 12, the men's cane 10 has a thick shaft 11, a relatively large grip 12 detachably attached to the upper end of the shaft 11 and gripped by the user, and a shaft 11. It is provided with a cane 13 that is fitted to the lower end portion and can come into contact with the ground or the floor surface. FIG. 2 shows a thick shaft 11 for men and a thin shaft 14 for women, but the shafts shown in FIGS. 1, 3, 4, and 10 to 12 other than FIG. Is a thick shaft 11 for men. The thick shaft 11 for men includes a hollow outer pipe portion 11a and a hollow inner pipe portion 11b slidably housed in the outer pipe portion 11a (FIGS. 11 and 12). Further, the outer pipe portion 11a is formed in a cylindrical shape, and the inner pipe portion 11b is formed in a cylindrical shape slightly smaller than the outer pipe portion 11a. As a result, the inner pipe portion 11b is slidably housed in the outer pipe portion 11a, and the shaft 11 is configured to be expandable and contractible. The outer pipe portion 11a and the inner pipe portion 11b are preferably formed of an aluminum alloy, a magnesium alloy, carbon, carbon steel or the like.

On the other hand, the grip 12 is divided into upper and lower parts, a lower grip portion 17 that is detachably attached to the upper end portion of the shaft 11 via a connector 16 and an upper grip that is detachably attached to the upper surface of the lower grip portion 17. It has a portion 18 (FIGS. 1 and 4). The lower grip portion 17 is formed in a substantially T shape, is provided so as to extend in a substantially horizontal direction, and has a horizontal portion 17a around which four fingers other than the thumb are wrapped when the user of the cane 10 grips, and this horizontal portion. It is composed of a vertical portion 17b hanging from the lower surface of the front portion of 17a (FIGS. 1 to 4). In this embodiment, the horizontal portion 17a and the vertical portion 17b are integrally formed of a hard plastic such as polypropylene (PP), acrylonitrile-butadiene-styrene (ABS), polyurethane, and polyvinyl chloride (PVC). The lower surface of the horizontal portion 17a is formed to be gently curved in its vertical cross section (FIGS. 1 to 4), and is formed in an arc shape protruding downward in its cross section (FIG. 10). Further, a lower recess 17c having an open upper surface is formed in the horizontal portion 17a, and a plurality of lower ribs 17d extending vertically and horizontally are formed in the lower recess 17c (FIGS. 1 to 5). Further, the upper surface of the horizontal portion 17a is formed in a substantially bowl shape with both ends gently standing up in the longitudinal direction.

In this embodiment, the upper grip portion 18 includes a hard plastic base portion 18a attached to the lower grip portion 17 and an elastomer surface layer portion 18b that covers the upper surface of the base portion 18a (FIGS. 1 and 4). , 8 and 9). Examples of the hard plastic forming the base portion 18a include polypropylene (PP), acrylonitrile-butadiene-styrene (ABS), polyurethane, polyvinyl chloride (PVC) and the like, and examples of the elastomer forming the surface layer portion 18b include olefin-based heat. Examples thereof include plastic elastomers, styrene-based thermoplastic elastomers, vinyl chloride-based thermoplastic elastomers, urethane-based thermoplastic elastomers, polyester-based thermoplastic elastomers, and polyamide-based thermoplastic elastomers. Further, the upper surface of the upper grip portion 18 is formed by being gently curved in its vertical cross section (FIGS. 1 and 4), and is formed in an arc shape protruding upward in its cross section (FIG. 10). Further, the upper grip portion 18 is formed with an upper recess 18c having an open lower surface, and a plurality of upper ribs 18d extending vertically and horizontally are formed in the upper recess 18c (FIGS. 1, 4 and 8). Further, the lower surface of the upper grip portion 18 is formed in a shape corresponding to the substantially bowl-shaped horizontal upper surface of the lower grip portion 17, and when the upper grip portion 18 is placed on the lower grip portion 17, the upper grip portion 18 is formed. The substantially bowl-shaped horizontal portion 17a is formed on the upper surface of the horizontal portion 17a without a gap to form a substantially cylindrical shape that is easy for the user of the cane 10.

On the other hand, the connecting tool 16 is provided with a lower shaft portion 16a fixed to the upper end portion of the shaft 11 and having a shaft diameter corresponding to the thickness of the shaft 11 and extending upward from the upper surface integrally with the lower shaft portion 16a. It has an upper shaft portion 16b (FIGS. 1 to 4 and 10). The connector 16 is formed of a metal such as an aluminum alloy, a magnesium alloy, or carbon steel. Further, the upper shaft portion 16b is formed with a first screw hole 16c extending downward from the upper surface of the upper shaft portion 16b and inside the upper shaft portion 16b, and the first screw hole 16c has a cross-shaped hole 21b in the head portion 21a. The first screw 21 on which (FIG. 6) is formed is configured to be screwable. In this embodiment, in addition to the connector 16 that connects the thick shaft 11 for men and the relatively large grip 12 for men, the thin shaft 14 for women and the relatively large grip 12 for men A connecting tool 19 for connecting the above is prepared (FIG. 2). That is, in this embodiment, two types of connecting tools 16 and 19 are prepared in which the shaft diameters of the upper shaft portion 16b are the same as each other and the shaft diameters of the lower shaft portion 16a are different from each other.

Specifically, the connecting tool 16 for the thick shaft 11 having the shaft diameter of the upper shaft portion 16b of 10 mm and the shaft diameter of the lower shaft portion 16a of 20 mm, and the shaft diameter of the upper shaft portion 19b are 10 mm. A connector 19 for a thin shaft 14 having a lower shaft portion 19a having a shaft diameter of 17 mm is prepared (FIG. 2). Then, of the two types of connecting tools 16 and 19, the connecting tools 16 and 19 that can be fixed to either the thick shaft 11 for men or the thin shaft 14 for women are selected. That is, the inner diameter of the upper pipe portion 11a of the thick shaft 11 for men is widened from 19 mm to 20 mm by the length of the lower shaft portion 16a of the connecting tool 16 for the thick shaft 11 by a lathe or the like, and the connecting tool 16 for the thick shaft 11 By applying an adhesive to the lower shaft portion 16a of the above and inserting the lower shaft portion 16a into the upper pipe portion 11a, the connector 16 is fixed to the thick shaft 11. Further, the inner diameter of the upper pipe portion 14a of the thin shaft 14 for women is widened from 16 mm to 17 mm by the length of the lower shaft portion 19a of the connector 19 for the thin shaft 14 by a lathe or the like, and the connector 19 for the thin shaft 14 is expanded. By applying an adhesive to the lower shaft portion 19a of the above and inserting the lower shaft portion 19a into the upper pipe portion 14a, the connector 19 is fixed to the thin shaft 14. As a result, the grip 12 having the same shape can be attached to either of the two types of shafts 11 and 14 having different thicknesses. As described above, the two types of connecting tools 16 and 19 are prepared because the commercially available cane 10 is a thick male cane 10 having an outer diameter and an inner diameter of 22 mm and 19 mm of the upper pipe portion 11a of the shaft 11. This is because most of the two types of canes for women, whose outer and inner diameters of the upper pipe portion 14a of the shaft 14 are 19 mm and 16 mm, are thin. Further, the dimensions of the lower shaft portions 16a and 19a and the upper shaft portions 16b and 19b of the connecting tools 16 and 19 are merely examples and are not limited thereto. Further, reference numeral 27 in FIGS. 1 to 4 and 10 to 12 hides the upper end surface of the upper pipe portion 11a of the thick shaft 11 to which the lower shaft portion 16a of the connector 16 is fixed (inserted) and looks good. It is a cap for a thick shaft 11 fitted to the upper end portion of the upper pipe portion 11a in order to improve the quality, and reference numeral 28 in FIG. 2 is a thin cap to which the lower shaft portion 19a of the connector 19 is fixed (inserted). It is a cap for a thin shaft 14 fitted to the upper end portion of the upper pipe portion 14a in order to hide the upper end surface of the upper pipe portion 14a of the shaft 14 and improve the appearance.

On the other hand, the vertical portion 17b of the lower grip portion 17 is formed with a tubular hole 17e that can be fitted into the upper shaft portions 16b and 19b of the connecting tools 16 and 19, and the first screw 21 is formed on the back wall of the tubular hole 17e. A through hole 17f for the first screw is formed through which the first screw can be inserted (FIGS. 1 to 4 and 10). Further, the upper grip portion 18 is formed with a second screw hole 18e extending upward and inward from the lower surface of the upper grip portion 18, and the second screw 22 can be screwed into the second screw hole 18e. (Fig. 1 and Fig. 4). A cross-shaped hole 22b is formed in the head portion 22a of the second screw 22. A second screw hole boss 18f is projected downward on the lower surface of the front end of the base portion 18a of the upper grip portion 18, and 18 g of a metal deposit in which the second screw hole 18e is formed is embedded in the second screw hole boss 18f. Will be done. Further, a second screw through hole 17g is formed in the front portion of the lower grip portion 17 so as to extend upward from the lower surface thereof and allow the second screw 22 to be inserted, and a second lower surface of the lower grip portion 17 has a second screw hole. A counterbore hole 17h for the second screw is formed concentrically with the through hole 17g for the screw so that the head portion 22a of the second screw 22 can be immersed. A rubber stopper 23 can be press-fitted into the counterbore hole 17h for the second screw.

On the other hand, a metal reinforcing plate 24 extending in the longitudinal direction of the grip 12 is interposed between the lower grip portion 17 and the upper grip portion 18 (FIGS. 1 to 4). The reinforcing plate 24 is formed by bending a metal such as an aluminum alloy, a magnesium alloy, or carbon steel into a crank shape. Further, a through hole 24a for the first screw through which the first screw 21 can be inserted is formed in the front portion of the reinforcing plate 24, and positioning holes 24b and 24b are formed in the central portion and the rear portion of the reinforcing plate 24, respectively. To. With the reinforcing plate 24 housed in the lower grip portion 17, the through hole 24a for the first screw communicates with the through hole 17f for the first screw, and the two positioning holes 24b and 24b are projected from the lower grip portion 17. It is fitted into the two positioning bosses 17i and 17i, respectively. Further, two first positioning holes 17j and 17j are formed in the two positioning bosses 17i and 17i, respectively, and a plurality of second positioning holes 17k are spaced in the lower grip portion 17 so as to surround the reinforcing plate 24. It is formed open (Fig. 6). When the upper grip portion 18 is placed on the lower grip portion 17, a plurality of positioning protrusions 18h that can be inserted into the first and second positioning holes 17j and 17k are projected from the upper grip portion 18 ( 1 and 4). Further, when the upper grip portion 18 is placed on the lower grip portion 17 with the reinforcing plate 24 accommodated in the lower grip portion 17, the reinforcing plate 24 is the lower rib 17d of the lower grip portion 17 and the upper rib 18d of the upper grip portion 18. It is configured to be sandwiched by (FIGS. 1 and 10). Further, shaft-side detent portions 16d and 19d having an oval cross section are formed at the roots of the upper shaft portions 16b and 19b of the connecting tools 16 and 19, and the mouth of the cylinder hole 17e of the lower grip portion 17 is formed. , Hole-side detent portions 17m having a shape corresponding to the shaft-side detent portions 16d and 19d are formed (FIGS. 1 to 4, 7 and 0).

The protruding length of the inner pipe portion 11b of the shaft 11 from the outer pipe portion 11a can be changed stepwise by the length adjusting mechanism 26 (FIGS. 11 and 12). The length adjusting mechanism 26 is selected from a plurality of shaft through holes 26a formed in the outer pipe portion 11a of the shaft 11 at intervals in the longitudinal direction and a plurality of shaft through holes 26a built in the inner pipe portion 11b. It has a single pin 26b that can be locked. Further, a single shaft through hole (not shown) having the same diameter as the shaft through hole 26a is formed in the vicinity of the upper end of the inner pipe portion 11b of the shaft 11. An elastic body (not shown) such as a U-shaped spring is built in the inner pipe portion 11b, and the direction in which the single pin 26b is inserted into the shaft through hole and the shaft through hole 26a by this elastic body. It is supposed to be urged to. The stone tip 13 is formed of natural rubber, synthetic rubber, an elastomer resin, a polyvinyl chloride (PVC) resin, or the like in a conical trapezoidal shape that gradually decreases from the lower part to the upper part.

The procedure for assembling the relatively large grip 12 for men configured as described above to the thick shaft 11 for men will be described. First, the tubular hole 17e of the relatively large lower grip portion 17 is fitted into the upper shaft portion 16b of the connector 16 for the thick shaft 11, and the hole-side detent portion 17m of the lower grip portion 17 is inserted into the shaft of the upper shaft portion 16b. It is fitted into the side rotation stopper 16d (FIGS. 2 and 3). This prevents the lower grip portion 17 from rotating with respect to the thick shaft 11. At this time, since the contact area between the shaft-side detent portion 16d and the hole-side detent portion 17m is relatively large, rattling of the grip 12 with respect to the shaft 11 can be suppressed. Next, after accommodating the reinforcing plate 24 in the lower grip portion 17, the first screw 21 is passed through the through hole 24a for the first screw of the reinforcing plate 24 and the through hole 17f for the first screw of the lower grip portion 17 to pass the upper shaft portion. It is screwed into the first screw hole 16c of 16b (FIG. 3). As a result, the lower grip portion 17 is attached to the connector 16 together with the reinforcing plate 24. Next, the upper grip portion 18 is placed on the upper surface of the lower grip portion 17 (FIGS. 1 and 4). At this time, the upper grip portion 18 is housed on the upper surface of the substantially bowl-shaped horizontal portion 17a of the lower grip portion 17 without a gap, and the plurality of positioning protrusions 18h of the upper grip portion 18 are the first and second positions of the lower grip portion 17. It is inserted into the positioning holes 17j and 17k, respectively, and the reinforcing plate 24 is sandwiched between the lower rib 17d of the lower grip portion 17 and the upper rib 18d of the upper grip portion 18 (FIG. 1). As a result, the upper grip portion 18 is positioned with respect to the lower grip portion 17, and the outer peripheral edge of the lower surface of the upper grip portion 18 coincides with the outer peripheral edge of the upper surface of the substantially bowl-shaped horizontal portion 17a of the lower grip portion 17. Further, after inserting the second screw 22 into the counterbore hole 17h for the second screw and the through hole 17g for the second screw of the lower grip portion 17 from below and screwing it into the second screw hole 18e of the upper grip portion 18. , The rubber stopper 23 is press-fitted into the counterbore hole 17h for the second screw (FIG. 1). As a result, the upper grip portion 18 is attached to the lower grip portion 17. In this way, the grip 12 can be attached to the shaft 11 with a relatively simple operation.

In the grip 12 assembled to the shaft 11 in this way, since the lower grip portion 17 is attached to the connector 16 together with the reinforcing plate 24, even if the lower grip portion 17 is made of plastic, a predetermined value required for the grip 12 is determined. Strength can be secured. Further, since the rubber stopper 23 is press-fitted into the counterbore hole 17h for the second screw, it becomes difficult for the user of the cane 10 who is not an expert in cane repair to replace the grip 12. As a result, since the cane repair specialist replaces the grip 12, the cane 10 after replacing the grip 12 can always satisfy a predetermined strength or the like. Further, since the head portion 22a of the second screw 22 cannot be visually recognized from the outside, the appearance of the grip 12 can be improved. Further, by changing the colors of the lower grip portion 17 and the upper grip portion 18, the variation of the design of the grip 12 can be increased. Further, since the upper grip portion 18 is composed of a base portion 18a made of hard plastic and an elastomer surface layer portion 18b that covers the upper surface of the base portion 18a, only the portion of the grip 12 that touches the palm of the user is soft. It can be made of a non-slip material. As a result, the usability of the cane 10 by the user can be improved without lowering the strength of the grip 12.

Next, a repair method when only the upper grip portion 18 is damaged or soiled by using the cane 10 will be described. The user of the cane 10 sends the cane 10 to a cane repair specialist (eg, a cane manufacturer). Then, the cane repair specialist who received the cane 10 first removes the rubber stopper 23 from the counterbore hole 17h for the second screw, and loosens and removes the second screw 22 with a Phillips screwdriver (tool). Next, the damaged upper grip portion 18 is removed from the lower grip portion 17. Further, a new upper grip portion 18 is placed on the lower grip portion 17, and the second screw 22 is inserted into the counterbore hole 17h for the second screw and the through hole 17g for the second screw of the lower grip portion 17 from below. After screwing into the second screw hole 18e of the upper grip portion 18, the rubber stopper 23 is press-fitted into the counterbore hole 17h for the second screw. Since it is only necessary to replace the damaged parts in this way, the repair cost can be reduced.

Next, a repair method when only the lower grip portion 17 is damaged or soiled by using the cane 10 will be described. The user of the cane 10 sends the cane 10 to a cane repair specialist (eg, a cane manufacturer). Then, the cane repair specialist who received the cane 10 first removes the rubber stopper 23 from the counterbore hole 17h for the second screw, loosens and removes the second screw 22 with a Phillips screwdriver (tool), and then removes the upper grip. The portion 18 is removed from the lower grip portion 17. Next, after loosening and removing the first screw 22 with a Phillips screwdriver (tool), the reinforcing plate 24 is removed, and the damaged lower grip portion 17 is pulled out from the upper shaft portion 16b of the connector 16. Next, a new lower grip portion 17 is fitted into the upper shaft portion 16b, a hole-side detent portion 17m of the lower grip portion 17 is fitted into the shaft-side detent portion 16d of the upper shaft portion 16b, and then the lower grip portion is fitted. The reinforcing plate 24 is housed in 17, and the first screw 21 is passed through the through hole 24a for the first screw of the reinforcing plate 24 and the through hole 17f for the first screw of the lower grip portion 17, and the first screw hole of the upper shaft portion 16b. Screw to 16c. Further, the removed upper grip portion 18 is placed on the upper surface of the new lower grip portion 17, and the second screw 22 is lowered to the counterbore hole 17h for the second screw and the through hole 17g for the second screw of the lower grip portion 17. After screwing into the second screw hole 18e of the upper grip portion 18, the rubber stopper 23 is press-fitted into the counterbore hole 17h for the second screw. Since it is only necessary to replace the damaged parts in this way, the repair cost can be reduced.

In recent years, there has been an increasing demand for attaching a grip 12 for men, which has a sense of stability, to a thin shaft 14 for women. In this case, first, the tubular hole 17e of the relatively large lower grip portion 17 for men is fitted into the upper shaft portion 19b of the connector 19 for the thin shaft 14 for women to prevent the lower grip portion 17 from rotating on the hole side. The portion 17m is fitted into the shaft-side detent portion 19d of the upper shaft portion 19b (FIG. 2). This prevents the lower grip portion 17 from rotating with respect to the thin shaft 14. Although not shown below, similarly to the above, after the reinforcing plate 24 is housed in the lower grip portion 17 and then screwed into the first screw hole 19c of the upper shaft portion 19b by the first screw 21, it is relatively for men. A large upper grip portion is placed on the upper surface of the lower grip portion 17, the second screw is screwed into the second screw hole of the upper grip portion, and a rubber stopper is press-fitted into the counterbore hole for the second screw. As a result, the grip 12 for men, which has a stable grip, is attached to the thin shaft 14 for women. In this way, the relatively large grip 12 for men can be attached not only to the thick shaft 11 for men but also to the thin shaft 14 for women. As a result, the degree of freedom in combining the shafts 11 and 14 and the grip 12 is increased, so that the design variation is widened.

13 and 14 show a second embodiment of the present invention. In FIGS. 13 and 14, the same reference numerals as those in FIGS. 1 and 4 indicate the same parts. In this embodiment, the head portion 52a of the second screw 52 is embedded inside the upper grip portion 48, and the male screw portion 52b of the second screw 52 is projected from the lower surface of the upper grip portion 48. The head 52a of the second screw 52 is preferably formed in a polygonal shape (for example, a hexagon) in order to prevent rotation. Further, the lower grip portion 47 is formed with a hole 47g for a second screw extending downward from the upper surface thereof and capable of inserting the male screw portion 52b of the second screw 52. Further, a nut 55 is screwed into the male screw portion 52b of the second screw 52 inserted into the second screw through hole 47g of the lower grip portion 47. In this embodiment, the nut 55 is a joint connector having a tubular portion 55a in which a second screw hole 55b is formed and a head portion 55c formed integrally with the tubular portion 55a and having a diameter larger than that of the tubular portion 55a. It is a decorative nut. A hexagonal hole 55d is formed in the head 55c of the nut 55. Further, the lower grip portion 47 is formed with a nut counterbore hole 47h having the same hole center as the second screw through hole 47g and into which the nut 55 can be immersed, and the nut counterbore hole 47h is formed. The rubber stopper 53 is press-fitted. Other than the above, the configuration is the same as that of the first embodiment.

In the cane 40 configured in this way, when the upper grip portion 48 is placed on the upper surface of the lower grip portion 47, the second screw 52 is inserted into the second screw through hole 47g from above, and the second screw through hole 47g is inserted. Since the upper grip portion 48 is attached to the lower grip portion 47 by screwing the nut 55 into the male screw portion 52b of the second screw 52 protruding from 47 g, the head 21a of the first screw 21 is the lower grip portion 47 and the lower grip portion 47. It is located between the upper grip portions 48 and cannot be visually recognized from the outside, and does not impair the appearance when the grip 42 is viewed upward. Further, the nut 55 screwed into the male screw portion 52b of the second screw 52 is immersed in the nut counterbore hole 47h formed in the lower grip portion 47, and the rubber stopper 53 is press-fitted into the nut counterbore hole 47h. Therefore, it becomes difficult for a user of the cane 40 who is not an expert in cane repair to replace the grip 42. As a result, since the cane repair specialist replaces the grip 42, the cane 40 after the grip replacement can always satisfy a predetermined strength or the like. Further, since the nut 55 cannot be visually recognized from the outside, the appearance of the grip 42 can be improved. Since the operations other than the above are substantially the same as the operations of the first embodiment, the repeated description will be omitted.

15 and 16 show a third embodiment of the present invention. In FIGS. 13 and 14, the same reference numerals as those in FIGS. 1 and 4 indicate the same parts. In this embodiment, the locking claw 78e is projected downward from the lower surface of the upper grip portion 78, and the locked hole 77g to which the locking claw 77e can be locked is formed in the lower grip portion 77. The locking claw 78e includes an arm portion 78f extending downward from the lower surface of the upper grip portion 78, and a claw body 78g integrally provided at the lower end of the arm portion 78f with the arm portion 78f. Further, the locked hole 77g is formed in a rectangular cross section. Further, the lower grip portion 77 is formed with a locking claw counterbore hole 77h having the same hole center as the locked hole 77g and capable of accommodating the claw body 78g of the locking claw 78e. A rubber stopper 83 is press-fitted into the counterbore hole 77h for the claw. The counterbore hole 77h for the locking claw is formed in a rectangular cross section. Other than the above, the configuration is the same as that of the first embodiment.

In the cane 70 configured in this way, the upper grip portion 78 is placed on the upper surface of the lower grip portion 77, and the locking claw 78e is locked in the locked hole 77g, whereby the upper grip portion 78 is placed on the lower grip portion 77. Since it is attached to the 77, the head 21a of the first screw 21 is located between the lower grip portion 77 and the upper grip portion 78 and cannot be visually recognized from the outside, and the appearance of the grip 72 when viewed from above is impaired. Absent. Further, the locking claw 78e inserted into the locked hole 77g of the lower grip portion 77 is housed in the locking claw counterbore hole 77h formed in the lower grip portion 77, and the locking claw counterbore hole 77h is accommodated. Since the rubber stopper 83 is press-fitted into 77h, it becomes difficult for a user of the cane 70 who is not an expert in cane repair to replace the grip 72. As a result, since the cane repair specialist replaces the grip 72, the cane 70 after the grip replacement can always satisfy a predetermined strength or the like. Further, since the locking claw 78e cannot be visually recognized from the outside, the appearance of the grip 72 can be improved. Since the operations other than the above are substantially the same as the operations of the first embodiment, the repeated description will be omitted.

In the first to third embodiments, the shaft includes an outer pipe portion and an inner pipe portion slidably housed in the outer pipe portion, that is, a stretchable shaft composed of two pipe portions. Although the present invention has been applied, the present invention can also be applied to a non-expandable shaft composed of a single pipe portion or a stretchable shaft composed of three or more pipe portions. Further, in the first to third embodiments, the lower grip portion is formed of plastic, but the lower grip portion may be formed of a metal such as an aluminum alloy, a magnesium alloy, or a titanium alloy. In this case, the metal reinforcing plate becomes unnecessary. Further, in the first to third embodiments, the upper grip portion composed of the base portion made of hard plastic and the surface layer portion made of elastomer covering the upper surface of the base portion is mentioned, but it is formed only by the hard plastic. It may be a plastic upper grip part.

Further, in the first embodiment, two types of connecting tools having the same shaft diameter of the upper shaft portion and different shaft diameters of the lower shaft portion are prepared, but the shaft diameters of the upper shaft portions are different from each other. Three types or four or more types of connecting tools that are the same and have different shaft diameters of the lower shafts may be prepared. Further, in the first to third embodiments, a shaft-side detent portion having an oval or polygonal cross section is formed at the base of the upper shaft portion of the connector, and the mouth of the tubular hole of the lower grip portion is formed. A hole-side detent portion having a shape corresponding to the shaft-side detent portion was formed in the above, but an shaft-side detent portion having a polygonal cross section (square shape, hexagonal shape, etc.) was formed at the base of the upper shaft portion. , A hole-side detent portion having a shape corresponding to the shaft-side detent portion may be formed at the mouth of the lower grip portion, or a shaft-side detent portion having an oval or polygonal cross section over the entire length of the upper shaft portion. A portion may be formed, and a hole-side detent portion having a shape corresponding to the shaft-side detent portion may be formed on the entire length of the tubular hole of the lower grip portion.

Further, in the first to third embodiments, the first screw having a cross-shaped hole formed in the head is used, but a special shape such as a star-shaped hole cannot be engaged with the head. The first screw in which the hole is formed may be used. In this case, only a cane repair specialist who has a special tool capable of engaging the specially shaped hole can replace the grip, making it more difficult for a cane user who is not a cane repair specialist to replace the grip. Further, in the second embodiment described above, a joint connector decorative nut having a hexagonal hole formed in the head is mentioned as the nut, but if a space can be secured in the lower grip portion, a hexagon nut or another nut is used as the nut. You may. Further, in the first embodiment, a second screw having a cross-shaped hole formed in the head is mentioned, and in the second embodiment, a joint connector decorative nut having a hexagonal hole formed in the head is used. As mentioned above, a second screw or a joint connector decorative nut having a specially shaped hole such as a star-shaped hole that cannot be engaged with a normal tool may be used. In this case, only a cane repair specialist who has a special tool capable of engaging the specially shaped hole can replace the grip, making it more difficult for a cane user who is not a cane repair specialist to replace the grip.

Further, in the first embodiment, the rubber stopper is press-fitted into the counterbore for the second screw with the head of the second screw immersed in the counterbore for the second screw of the lower grip portion. In the second embodiment, the rubber stopper is press-fitted into the nut counterbore while the nut is immersed in the nut counterbore of the lower grip portion, and in the third embodiment, the locking claw is A rubber stopper was press-fitted into the locking claw counterbore while immersed in the locking claw counterbore of the lower grip, but the counterbore for the second screw and the nut counterbore into which the rubber stopper was press-fitted were pressed. The hole or the counterbore for the locking claw may be sealed with an adhesive sheet. In this case, the counterbore for the second screw, the counterbore for the nut, or the counterbore for the locking claw is difficult for the cane user to understand, so the grip must be replaced by a cane user who is not an expert in cane repair. It becomes more difficult and has the advantage that the appearance of the grip can be further improved.

10, 40, 70 Cane 11, 14 Shaft 12, 42, 72 Grip 13 Stone thruster 16, 19 Connector 16a, 19a Lower shaft 16b, 19b Upper shaft 16c, 19c First screw hole 16d, 19d Shaft side detent Parts 17, 47, 77 Lower grip part 17e Cylinder hole 17f 1st screw through hole 17g, 47g 2nd screw through hole 17h 2nd screw counterbore hole 17m Hole side detent part 18, 48, 78 Upper grip part 18a Base 18b Surface layer 18e 2nd screw hole 21 1st screw 22,52 2nd screw 22a, 52a Head of 2nd screw 23,53,83 Rubber stopper 24 Reinforcing plate 24a Through hole for 1st screw 47h Nut seat Drilling hole 52b Male threaded part of 2nd screw 55 Joint connector decorative nut (nut)
77g Locked hole 77h Counterbore for locking claw 78e Locking claw

Claims (15)

In a cane having a shaft, a grip that is removable and gripped by the user at the upper end of the shaft, and a cane that is fitted to the lower end of the shaft and can contact the ground or floor.
The grip is divided into upper and lower parts, and has a lower grip portion that is detachably attached to the upper end portion of the shaft via a connector, and an upper grip portion that is detachably attached to the upper surface of the lower grip portion. ,
The connecting tool is fixed to the upper end portion of the shaft and has a shaft diameter corresponding to the thickness of the shaft, and an upper shaft portion provided integrally with the lower shaft portion and extending upward from the upper surface thereof. Has a part and
A tubular hole that can be fitted into the upper shaft portion of the connector is formed in the lower grip portion.
A cane characterized in that the lower grip portion is attached to the upper shaft portion by a first screw in a state where the cylinder hole is fitted into the upper shaft portion. A first screw hole extending downward and inward from the upper surface of the upper shaft portion is formed.
A through hole for the first screw through which the first screw can be inserted is formed in the back wall of the tubular hole of the lower grip portion.
With the lower grip portion fitted into the upper shaft portion, the first screw is inserted into the through hole for the first screw from above and screwed into the first screw hole. The cane according to claim 1, which is attached to the upper shaft portion. A second screw hole extending upward and inward from the lower surface of the upper grip portion is formed.
A through hole for a second screw is formed in the lower grip portion so as to extend upward from the lower surface thereof and allow the second screw to be inserted.
With the upper grip portion placed on the upper surface of the lower grip portion, the upper grip portion inserts the second screw into the second screw through hole from below and screwes the second screw into the second screw hole. The cane according to claim 1 or 2, which is attached to the lower grip portion. The head of the second screw is embedded inside the upper grip portion, and the male screw portion of the second screw is projected from the lower surface of the upper grip portion.
A through hole for a second screw is formed in the lower grip portion so as to extend downward from the upper surface thereof and allow the male screw portion of the second screw to be inserted.
When the upper grip portion puts the upper grip portion on the upper surface of the lower grip portion, the second screw is inserted into the through hole for the second screw from above and protrudes from the through hole for the second screw. The cane according to claim 1 or 2, which is attached to the lower grip portion by screwing a nut into the male screw portion of the second screw. A locking claw is projected downward from the lower surface of the upper grip portion.
A locked hole to which the locking claw can be locked is formed in the lower grip portion.
Claim 1 or 2 in which the upper grip portion is attached to the lower grip portion by placing the upper grip portion on the upper surface of the lower grip portion and locking the locking claw in the locked hole. The cane described. The lower grip portion is formed of plastic, and a first screw through hole extending in the longitudinal direction of the grip and communicating with the first screw through hole is formed between the lower grip portion and the upper grip portion. A metal reinforcing plate is interposed, and the lower grip portion passes the first screw through the through hole for the first screw and the through hole for the first screw and is screwed into the first screw hole. The cane according to claim 2, which is attached to the connector together with the reinforcing plate. A plurality of types of connecting tools having the same shaft diameter of the upper shaft portion and different shaft diameters of the lower shaft portion are prepared, and among these connecting tools, a connecting tool that can be fixed to the shaft is selected. The cane according to claim 1. The cane according to any one of claims 1 to 5, wherein the upper grip portion comprises a base portion made of a hard plastic attached to the lower grip portion and a surface layer portion made of an elastomer that covers the upper surface of the base portion. The head of the second screw inserted into the through hole for the second screw of the lower grip portion is immersed in the counterbore for the second screw formed in the lower grip portion, and is immersed in the counterbore for the second screw. The cane according to claim 3, wherein a rubber stopper is press-fitted. 4. The fourth aspect of the present invention, wherein the nut screwed into the male screw portion of the second screw is immersed in a nut counterbore hole formed in the lower grip portion, and a rubber stopper is press-fitted into the nut counterbore hole. Cane. The locking claw inserted into the locked hole of the lower grip portion is housed in the locking claw counterbore hole formed in the lower grip portion, and a rubber stopper is press-fitted into the locking claw counterbore hole. The cane according to claim 5. The cane according to claim 9, wherein the counterbore for the second screw is sealed with an adhesive sheet. The cane according to claim 10, wherein the counterbore for the nut is sealed with an adhesive sheet. The cane according to claim 11, wherein the counterbore for the locking claw is sealed with an adhesive sheet. A shaft-side detent portion having an oval or polygonal cross section is formed in at least a part of the upper shaft portion of the connector, and the shaft-side detent portion is formed in at least a part of the cylinder hole of the lower grip portion. The cane according to claim 1 or 2, wherein a hole-side detent portion having a corresponding shape is formed, and the hole-side detent portion is configured to be fitted into the shaft-side detent portion.

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