JP7058437B2 - Wand - Google Patents

Description

The present invention relates to a cane that assists walking.

A cane that can shorten the total length when not in use is known (Patent Document 1 and Patent Document 2).

The cane of Patent Document 1 has a plurality of cylinders and a rubber cord arranged so as to pass through the inside of each cylinder. When using a cane, each of the plurality of cylinders is connected so that the other end is inserted into one end to form one straight cane. It can be folded when the wand is not in use. That is, when the end portions of the members are disconnected, the members are connected only by the rubber cord, and by arranging the members in parallel, the members are shortened in the length direction and can be bundled.

The cane of Patent Document 2 has a plurality of cylinders having different diameters. When the cane is not used, a plurality of cylinders can be compactly stored by sequentially inserting the cylinders on the small diameter side into the cylinders on the large diameter side. When using a cane, with multiple cylinders extended from the stowed state, one cylinder is locked by rotating it relative to the other cylinder around the central axis, and each cylinder is locked. Axial movement is locked.

Jitsukaihei 7-14913 Japanese Patent Application Laid-Open No. 2003-250930

In the cane of Patent Document 1, since a plurality of cylinders are simply arranged in parallel, the overall volume of the cane is the same as that at the time of use even in the folded state, and it is compact when it is stored in a bag or the like. It does not become. In addition, the rubber cord may break due to deterioration over time.

The cane of Patent Document 2 has a compact overall volume because one cylinder is sequentially housed in the other cylinder. However, by continuously repeating locking and unlocking, the locking portion is worn, and the overload in the axial direction during use may unintentionally unlock and shorten the length.

In addition, there are many canes for people who have difficulty or inconvenience in walking, and the product lineup of canes for other people is small. That is, such a person does not always need a cane when walking, and often stores it in a bag or the like in case of fatigue due to long-term walking or in case of emergency. Therefore, the storage time may be longer than the actual usage time. Furthermore, long canes can get in the way when traveling by train or plane.

It is an object of the present invention to provide a cane that can be made compact when not in use, has excellent portability and durability, and can withstand a heavy load when in use.

According to one aspect of the present invention, it is a cane provided with a plurality of cylinders having different diameters, the cylinder having a first end portion and a second end portion, and the first end portion of the cylinder body. An opening extending in the circumferential direction is formed on the outer peripheral surface of the portion, and an engaging member is provided at the second end portion of the cylinder. The cylinders on the side are sequentially inserted, and in the assembled state of the cane, each of the cylinders is sequentially pulled out, and the opening of the cylinder on the large diameter side and the cylinder of the cylinder on the small diameter side are said. Provided is a cane characterized in that the engaging member is engaged over the circumferential direction.

The opening of the cylinder on the large diameter side has a first engaging surface, the engaging member of the cylinder on the small diameter side has a second engaging surface, and the first engaging surface and the said. By abutting with the second engaging surface, the opening of the cylinder on the large diameter side and the engaging member of the cylinder on the small diameter side are engaged with each other in the circumferential direction. May be good.

The engaging member may be moveable along the radial direction and may be urged outward in the radial direction.

Further provided with a grip, the grip is formed with a first insertion hole or groove extending in the axial direction of the grip, and in the stored state of the cane, the cylinder on the small diameter side is inside the cylinder on the large diameter side. The plurality of cylinders into which the bodies are sequentially inserted may be inserted into the first insertion hole or groove.

The grip is formed with a second insertion hole extending in a direction intersecting the axial direction of the grip, and in the assembled state of the cane, one of the cylinders is inserted into the second insertion hole. You may do it.

According to the aspect of the present invention, it is possible to make it compact when not in use, and it has a common effect of providing a cane which is excellent in portability and durability and can withstand a heavy load when in use.

It is a side view of the stored state of the cane by 1st Embodiment. It is a vertical sectional view of a cane in line AA of FIG. It is a vertical sectional view of the grip of the cane of FIG. It is a perspective view of the lid member of the cane of FIG. It is a vertical sectional view of the cylinder body of the cane of FIG. It is a perspective view explaining the step of assembling the cane of FIG. FIG. 3 is a perspective view illustrating another step of assembling the cane of FIG. FIG. 5 is a perspective view illustrating yet another step of assembling the cane of FIG. It is a perspective view of the assembled state of the cane of FIG. 9 is a cross-sectional view showing the connection between the grip of the cane and the tubular body of FIG. It is sectional drawing which shows the connection between the cylinders of the cane of FIG. It is a partial cross-sectional view of the cylinder by another embodiment. It is sectional drawing of the cylinder according to still another embodiment. It is a front view of the cylinder of FIG. It is sectional drawing which shows the connection between the cylinders of FIG. It is a vertical sectional view of the stored state of the cane by 2nd Embodiment. It is a vertical sectional view of the cylinder body of the cane of FIG. It is a perspective view of the holding member of the cane of FIG. It is a partial cross-sectional view of the holding member of FIG. It is a partial cross-sectional view of the holding member of another embodiment. It is a perspective view explaining the step of assembling the cane of FIG. FIG. 6 is a perspective view illustrating another step of assembling the cane of FIG. It is a perspective view of the assembled state of the cane of FIG. It is a vertical sectional view of the cane of FIG. 23. It is a perspective view of the grip of another embodiment. It is a perspective view of the stored state of the wand provided with the grip of FIG. It is a perspective view of the assembled state of the wand provided with the grip of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. A common reference code is attached to the corresponding components throughout the drawing.

FIG. 1 is a side view of the stored state of the cane 1 according to the first embodiment, and FIG. 2 is a vertical sectional view of the cane 1 in the line AA of FIG. The cane 1 has a grip 2 and a plurality of cylinders 3 having different diameters.

The plurality of cylinders 3 have a first cylinder 10, a second cylinder 20, a third cylinder 30, and a fourth cylinder 40, each of which is formed in a cylindrical shape, and has diameters in this order. Is configured to be smaller. Therefore, the small-diameter cylinder can be sequentially inserted into the large-diameter cylinder. In other words, the outer diameter and inner diameter of each of the cylinders are set so that the cylinders on the small diameter side can be sequentially inserted into the cylinders on the large diameter side. Therefore, the fourth cylinder 40 can be inserted into the third cylinder 30, and the third cylinder 30 into which the fourth cylinder 40 is inserted can be inserted into the second cylinder 20. The second cylinder 20 into which the third cylinder 30 into which the fourth cylinder 40 is inserted can be inserted into the cylinder 10.

FIG. 3 is a vertical cross-sectional view of the grip 2 of the cane 1 of FIG. The grip 2 is formed in a substantially rectangular parallelepiped shape. A circular first insertion hole 4 extending in the axial direction is formed on one of the surfaces perpendicular to the longitudinal direction of the grip 2, that is, the axial direction. On one of the surfaces perpendicular to the surface on which the first insertion hole 4 is formed, a circular second insertion hole 5 extending in a direction intersecting the axial direction of the grip 2, for example, in an orthogonal direction is formed. .. The diameters of the first insertion hole 4 and the second insertion hole 5 are the same. An O-ring 6 is fitted in the openings of the first insertion hole 4 and the second insertion hole 5 in order to prevent the inserted cylinder 3 from falling off. Instead of the O-ring 6, an annular protrusion may be formed on the inner peripheral surface of the opening portion. The grip 2 is formed of, for example, a metal material such as SUS material, aluminum material or titanium, or a resin material such as ABS, PE or PP.

The first insertion hole 4 and the second insertion hole 5 each have the same inner diameter. A plurality of cylinders 3 can be inserted into the first insertion hole 4 and the second insertion hole 5 of the grip 2. That is, the inner diameters of the first insertion hole 4 and the second insertion hole 5 are set slightly larger than the outer diameter of the first cylinder body 10 having the maximum outer diameter. Therefore, when the cane 1 is not in use, the first cylinder 10 into which the fourth cylinder 40, the third cylinder 30, and the second cylinder 20 are sequentially inserted can be inserted into the first insertion hole 4. Therefore, the cane 1 can be stored as shown in FIG.

FIG. 4 is a perspective view of the lid member 7 of the cane 1 of FIG. The lid member 7 is formed so that it can be fitted into any of the first insertion hole 4 and the second insertion hole 5 of the grip 2. That is, when a plurality of cylinders 3 are inserted into the first insertion hole 4, the lid member 7 is fitted into the second insertion hole 5 (FIG. 1) without spoiling the aesthetic appearance. On the other hand, when a plurality of cylinders 3 are inserted into the second insertion hole 5, the lid member 7 is fitted into the first insertion hole 4 so as not to spoil the aesthetic appearance.

FIG. 5 is a vertical cross-sectional view of the cylinder 3 of the cane 1 of FIG. The cylinder 3 will be described by taking the second cylinder 20 as an example. The second cylinder 20 has substantially the same outer shape as the first cylinder 10 and the third cylinder 30 except for the dimensions. The fourth cylinder 40 is different from other cylinders in that it has an elastic member 8 that acts as a cushion when the cane 1 is used. The tubular body 3 is formed of, for example, a metal material such as SUS material, aluminum material, or titanium. Regarding the dimensions, the outer diameters of the first cylinder 10, the second cylinder 20, the third cylinder 30, and the fourth cylinder 40 are, for example, φ20 mm, φ18 mm, φ16 mm, and φ14 mm, and the wall thickness is 1 mm. be.

The second tubular body 20 has a first end portion 21 which is the distal side, that is, the ground side when the cane 1 is used, and a second end portion 22 which is the proximal side, that is, the hand side when the cane 1 is used. have. The second cylinder 20 is a cylinder having a uniform outer diameter and inner diameter except for the vicinity of the first end portion 21. On the outer peripheral surface of the first end portion 21, a first small diameter portion 24 having a diameter smaller than the outer diameter other than the vicinity of the first end portion 21 is formed via the first step portion 23. Further, on the inner peripheral surface of the first end portion 21, a second small diameter portion 26 having a diameter smaller than the inner diameter other than the vicinity of the first end portion 21 is formed via the second step portion 25.

As shown in FIGS. 7 and 8 described later, similarly to the second cylinder 20, the first cylinder 10 has a first end portion 11 and a second end portion 12, and the third cylinder body 30 has a first end portion 11 and a second end portion 12. It has a first end portion 31 and a second end portion 32, and the fourth tubular body 40 has a first end portion 41 and a second end portion 42. For convenience, the proximal side of the fourth cylinder 40 is the first end 41 and the distal side is the second end 42 when the cane 1 is used. Although not shown, like the second cylinder 20, the first cylinder 10 and the third cylinder 30 have a first stage portion and a second stage portion, and a first small diameter portion and a second small diameter portion. There is.

In the stored state as shown in FIG. 1, the small diameter side is inserted into the large diameter side cylinder by inserting the first end side of the small diameter side cylinder into the second end side of the large diameter side cylinder. The cylinders are inserted one after another. That is, for example, the second cylinder 20 is inserted into the first cylinder 10 by inserting the first end 21 side of the second cylinder 20 into the second end 12 side of the first cylinder 10. ing. At this time, the first small diameter portion 24 of the second cylinder 20 on the small diameter side is inserted into the second small diameter portion of the first cylinder 10, and the first step portion formed outside the second cylinder 20. The contact between the 23 and the second step portion formed inside the first cylinder 10 prevents the second cylinder 20 from coming off from the first end 11 side of the first cylinder 10. There is. Further, each tubular body may form an outer peripheral surface and an inner peripheral surface with a clearance and a surface roughness that allows the cylinder to slowly come off due to its own weight.

The elastic member 8 will be described with reference to FIG. The elastic member 8 has a main body member 8a and a nut 9. A male screw is formed on the outer peripheral surface of the main body member 8a, and a female screw is formed on the inner peripheral surface of the fourth cylinder 40. Therefore, the elastic member 8 and the fourth tubular body 40 are connected by screwing. By rotating the elastic member 8, the elastic member 8 can be expanded and contracted with respect to the fourth tubular body 40, and the position of the elastic member 8 can be fixed by the nut 9. As a result, the total length of the cane can be lengthened or shortened and adjusted according to the height of the user and the like.

A method of assembling the cane 1 will be described with reference to FIGS. 6 to 9. 6 is a perspective view illustrating a step of assembling the cane 1 of FIG. 1, FIG. 7 is a perspective view illustrating another step of assembling the cane 1 of FIG. 1, and FIG. 8 is a perspective view illustrating another step of assembling the cane 1 of FIG. It is a perspective view explaining still another step of assembling 1, and FIG. 9 is a perspective view of the assembled state of the cane 1 of FIG. Further, FIG. 10 is a cross-sectional view showing the connection between the grip 2 and the cylinder 3 of the cane 1 of FIG. 9, and FIG. 11 is a cross-sectional view showing the connection between the cylinders of the cane 1 of FIG.

First, in the stored state shown in FIG. 1, a grip is gripped on a plurality of cylinders 3, that is, a first cylinder 10 in which a fourth cylinder 40, a third cylinder 30, and a second cylinder 20 are sequentially inserted. It is pulled out from the first insertion hole 4 of 2 (FIG. 6). Next, the fourth cylinder 40, the third cylinder 30, the second cylinder 20, and the first cylinder 10 are sequentially pulled out (FIG. 7). As shown in FIG. 7, when each of the sequentially pulled out cylinders is arranged in the same straight line, the first end portion of the cylinder on the small diameter side faces the second end portion of the cylinder on the large diameter side. There is. That is, for example, the first end portion 21 of the second cylinder body 20 faces the second end portion 12 of the first cylinder body 10. This is reversed and arranged so that the first end portion of the cylinder on the large diameter side faces the second end portion of the cylinder on the small diameter side (FIG. 8). That is, for example, the first end portion 11 of the first cylinder body 10 is arranged so as to face the second end portion 22 of the second cylinder body 20, but the fourth cylinder body 40 does not have to be inverted. By connecting these cylinders in sequence, the assembly is completed, and the cane 1 is in the assembled state (FIG. 9).

As shown in FIG. 10, in the assembled state of the cane 1, the second end portion 12 of the first cylinder body 10 inserted into the second insertion hole 5 of the grip 2 is opposite to the second insertion hole 5 of the grip 2. It abuts on the inner surface of the side surface and supports the load when the cane 1 is used. Further, as described above, the first cylinder body 10 is prevented from coming off by the O-ring 6 provided in the second insertion hole 5.

As shown in FIG. 11, in the assembled state of the cane 1, the first small diameter portion 24 of the second tubular body 20 is inserted inside the second end portion 32 of the third tubular body 30, and the third tubular body 30 The end surface of the second end portion 32 is in contact with the first step portion 23 of the second cylinder body 20. That is, the small diameter portion of the cylinder on the large diameter side is inserted inside the second end portion of the cylinder on the small diameter side, and the end surface of the second end portion of the cylinder on the small diameter side is the first of the cylinder on the large diameter side. It is in contact with the step. It is preferable that the contact surface between the end surface of the second end portion of the cylinder on the small diameter side and the first step portion of the cylinder on the large diameter side is perpendicular to the axial direction. The inside of the first small diameter portion 24 of the second cylinder 20 and the second end portion 32 of the third cylinder 30 is connected by fitting to prevent disconnection.

By performing the operations described with reference to FIGS. 6 to 9 in the reverse order, the cane 1 can be changed from the assembled state to the stored state.

FIG. 12 is a partial cross-sectional view of a cylinder according to another embodiment. In the present embodiment, the first end of the cylinder on the large diameter side and the second end of the cylinder on the small diameter side are connected by screwing instead of fitting. Therefore, for example, on the outer peripheral surface of the first small diameter portion 24 of the first end portion 21 of the second cylinder body 20, a female screw portion and a screw portion formed on the inner peripheral surface of the second end portion of the third cylinder body 30 are screwed. A matching male threaded portion 27 is formed, and the inner peripheral surface of the second end portion 22 of the second tubular body 20 is screwed with the male threaded portion formed on the first end portion 11 of the first tubular body 10. A female threaded portion 28 is formed.

FIG. 13 is a cross-sectional view of a cylinder according to still another embodiment. 14 is a front view of the cylinder of FIG. 13, and FIG. 15 is a cross-sectional view showing a connection between the cylinders of FIG. In the present embodiment, the first end of the large-diameter cylinder and the second end of the small-diameter cylinder are connected by engagement rather than fitting.

That is, a plunger 50 is provided at the first end portion of the cylinder on the large diameter side, for example, the first end portion 11 of the first cylinder body 10. The plunger 50 includes a cylindrical plunger main body 51, two protrusion members 52 protruding from both ends of the plunger main body 51, and a spring 53 arranged between the two protrusion members 52 and urging them outward. Have. The protrusion member 52 of the plunger 50 projects outward from the hole provided in the first small diameter portion 14 of the first cylinder body 10. On the other hand, the inner peripheral surface of the second end portion of the cylinder on the small diameter side, for example, the second end portion 22 of the second cylinder 20, is annular over the entire circumference so as to engage with the protrusion member 52 of the plunger 50. A groove 29 is formed. By appropriately pushing the protrusion member 52 of the plunger 50 inward in the radial direction against the urging force of the spring 53, the cylinders can be connected to each other and disconnected from each other.

In the above-described embodiment, as described with reference to FIG. 11, the contact surface between the end surface of the second end portion of the cylinder on the small diameter side and the first stage portion of the cylinder on the large diameter side is in the axial direction. By making the surface perpendicular to the vertical direction, the load in the axial direction can be directly received without being dispersed in the radial direction, so that it has the effect of being able to withstand a heavy load. In particular, the circular contact surface to be abutted has a high load bearing capacity in the axial direction as compared with other directions such as the radial direction, and is therefore excellent in durability.

Further, in the assembled state of the cane 1, the first end portion of the cylinder on the large diameter side and the second end portion of the cylinder on the small diameter side are sequentially connected. On the other hand, in the stored state of the cane 1, the first end side of the cylinder on the small diameter side is inserted into the second end side of the cylinder on the large diameter side, so that the small diameter side is inside the cylinder on the large diameter side. The cane 1 has load resistance and durability as described above because the cylinders of the above are sequentially inserted and the plurality of cylinders 3 can be inserted into the first insertion hole 4 of the grip 2. At the same time, it also has the effect of making it compact when not in use. The grip 2 may have any shape such as a columnar shape or a polygonal shape as long as it has a hole extending in the axial direction into which a plurality of cylinders 3 can be inserted.

FIG. 16 is a vertical sectional view of the cane 100 in a stored state according to the second embodiment. The cane 100 has a grip 2 and a plurality of tubular bodies 103 having different diameters. The grip 2 and the elastic member 8 are the same as the grip 2 and the elastic member 8 of the first embodiment.

The plurality of cylinders 103 have a first cylinder 110, a second cylinder 120, a third cylinder 130, and a fourth cylinder 140, each formed in a cylindrical shape, and have diameters in this order. Is configured to be smaller. Therefore, the small-diameter cylinder can be sequentially inserted into the large-diameter cylinder. In other words, the outer diameter and inner diameter of each of the cylinders are set so that the cylinders on the small diameter side can be sequentially inserted into the cylinders on the large diameter side. Therefore, the fourth cylinder 140 can be inserted into the third cylinder 130, and the third cylinder 130 into which the fourth cylinder 140 is inserted can be inserted into the second cylinder 120. The second cylinder 120 into which the third cylinder 130 into which the fourth cylinder 140 is inserted can be inserted into the cylinder 110.

FIG. 17 is a vertical cross-sectional view of the tubular body 103 of the cane 100 of FIG. The cylinder 103 will be described by taking the second cylinder 120 as an example. The second cylinder body 120 has substantially the same outer shape as the third cylinder body 130 except for the dimensions. The first cylinder 110 is different from other cylinders in that the second end 112, which will be described later, is a closed end, and the fourth cylinder 140 serves as a cushion when the cane 100 is used. It differs from other cylinders in that it has an elastic member 8 that fulfills the above conditions. The tubular body 103 is formed of, for example, a metal material such as SUS material, aluminum material, or titanium. Regarding the dimensions, the outer diameters of the first cylinder 110, the second cylinder 120, the third cylinder 130, and the fourth cylinder 140 are, for example, φ26 mm, φ23 mm, φ20 mm, and φ17 mm, and the wall thickness is 1 mm. be.

The second tubular body 120 has a first end portion 121 that is the distal side, that is, the ground side when the cane 100 is used, and a second end portion 122 that is the proximal side, that is, the hand side when the cane 100 is used. have. A rectangular opening 123 extending in the circumferential direction is formed on the outer peripheral surface of the first end portion 121. The opening 123 has a first engaging surface 124. That is, the rectangular opening 123 has an arc-shaped minute-width plane facing the first end 121 direction due to the wall thickness of the cylindrical second cylinder 120, and this plane is the first engagement. It constitutes the surface 124. Further, the inner peripheral surface of the first end portion 121 is formed to have a slightly smaller diameter, whereby the locking portion 125 is formed. The second end 122 of the second cylinder 120 has a separate holding member 150.

As shown in FIGS. 22 and 23, which will be described later, like the second cylinder 120, the first cylinder 110 has a first end 111 and a second end 112, and the third cylinder 130 has a first end 111 and a second end 112. The fourth tubular body 140 has a first end portion 131 and a second end portion 132, and the fourth tubular body 140 has a first end portion 141 and a second end portion 142. Further, similarly to the second cylinder body 120, the first cylinder body 110 and the third cylinder body 130 have an opening 113 and an opening 133 (FIG. 23), respectively, and a holding member 150. For convenience, the fourth tubular body 140 has the proximal side as the first end portion 141 and the distal side as the second end portion 142 when the cane 100 is used.

18 is a perspective view of the holding member 150 of the cane 100 of FIG. 16, and FIG. 19 is a partial cross-sectional view of the holding member 150 of FIG. The holding member 150 has an engaging member 151, a pillar member 152, and two springs 153. The holding member 150 is formed in a columnar shape as a whole, and a recess 154 cut out in a semicircular columnar shape toward the central axis is formed on the outer peripheral surface thereof. The engaging member 151 is a substantially semicircular columnar member that complements the shape of the space of the notched recess 154. The engaging member 151 is formed with an elliptical or rounded rectangular through hole 155 extending in the radial direction. The pillar member 152 is a bolt or a pin.

The engaging member 151 is inserted into the recess 154 of the holding member 150, and the pillar member 152 is fixed to the holding member 150 so as to pass through the through hole 155 of the engaging member 151. As a result, the engaging member 151 can move along the radial direction in the recess 154 of the holding member 150 within the range in which the pillar member 152 can move in the through hole 155. The engaging member 151 is radially outwardly urged by two springs 153 supported on the wall surface of the recess 154 of the holding member 150. The holding member 150 is fixedly attached to the second end portion of the tubular body by welding or the like. As shown in FIG. 20, the engaging member 151 may be urged outward in the radial direction by one spring 153 supported by the wall surface of the recess 154 of the holding member 150, and three or more. May be urged outward in the radial direction by the spring 153 of the.

The engaging member 151 has a second engaging surface 156. That is, since the engaging member 151 is urged outward in the radial direction, the engaging member 151 projects with respect to the outer peripheral surface of the holding member 150 when no force is applied in the direction of compressing the spring 153. ing. The upper surface of this protruding portion when viewed from the axial direction, that is, a crescent-shaped plane facing outward in the axial direction while attached to the second tubular body 120, constitutes the second engaging surface 156. ..

As shown in FIG. 16, in the retracted state, the engaging member 151 of the cylinder on the small diameter side is in a state where the spring 153 is compressed by the contact with the inner peripheral surface of the inserted cylinder on the large diameter side. It has become. Even in this state, the engaging member 151 slightly protrudes from the outer peripheral surface of the holding member 150.

A method of assembling the cane 100 will be described with reference to FIGS. 21 to 24. 21 is a perspective view illustrating a step of assembling the cane 100 of FIG. 16, FIG. 22 is a perspective view illustrating another step of assembling the cane 100 of FIG. 16, and FIG. 23 is a perspective view illustrating another step of assembling the cane 100 of FIG. It is a perspective view of the assembled state of 100. Further, FIG. 24 is a vertical sectional view of the cane 100 of FIG. 23.

First, in the stored state shown in FIG. 16, a plurality of cylinders 103, that is, a first cylinder 110 in which a fourth cylinder 140, a third cylinder 130, and a second cylinder 120 are sequentially inserted are gripped. It is pulled out from the first insertion hole 4 of 2 (FIG. 21). Each cylinder may form an outer peripheral surface and an inner peripheral surface with a clearance and a surface roughness that allows the cylinder to slowly come off due to its own weight. Next, the fourth cylinder 140, the third cylinder 130, the second cylinder 120, and the first cylinder 110 are sequentially pulled out (FIG. 22). At this time, the engaging member 151 slightly protruding from the outer peripheral surface of the holding member 150 is a locking portion provided on the inner peripheral surface of the first end portion, for example, the first end portion 121 of the second tubular body 120. By locking with the locking portion 125 (FIG. 17) of the above, disconnection is prevented.

Next, each of the drawn cylinders 103 is rotated around the axis so that the engagement member 151 of the holding member 150 is arranged in the opening of each cylinder, for example, the opening 123 of the second cylinder 120. Align to. The spring 153 compressed by the contact with the inner peripheral surface of the cylinder is restored by arranging the engaging member 151 of the holding member 150 in the opening, and the engaging member 151 fits in the opening. As a result, the assembly is completed and the assembled state is reached (FIGS. 23 and 24).

When the cane 100 is changed from the assembled state to the retracted state, the engagement between the engaging member 151 and the opening of the cylinder is released by rotating each of the cylinders 103 around the axis, and the large diameter side is again obtained. It is possible to sequentially insert the cylinder on the small diameter side into the cylinder of. That is, at the time of rotation, the engaging member 151 moves inward in the radial direction and is released from the fitting with the opening of the cylinder by trying to rotate each of the cylinders 103 around the axis. The shape of the engaging member 151 or the opening to be abutted, for example, inclination or chamfering, is determined.

Further, the radius of curvature of the cylindrical outer peripheral surface of the engaging member 151 may be formed so as to be different along the circumferential direction. That is, on the cylindrical outer peripheral surface of the engaging member 151, the radius of curvature on the side closer to the opening of the tubular body may be increased, and the radius of curvature on the side farther from the opening of the tubular body may be decreased. As a result, the engaging member 151 can be easily inserted into and disengaged from the opening of the tubular body, while the engagement can be ensured.

In the assembled state as shown in FIG. 23, as described above, the second end 112 of the first cylinder 110 inserted into the second insertion hole 5 of the grip 2 is the second insertion hole 5 of the grip 2. It abuts on the inner surface of the opposite surface and supports the load when the cane 100 is used. Further, as described above, the first cylinder 110 is prevented from coming off by the O-ring 6 provided in the second insertion hole 5.

In the present embodiment, the heavy load can be withstood by engaging the first engaging surface 124 of the opening 123 with the second engaging surface 156 of the engaging member 151. That is, by making the load at the time of use not a point but a plane that engages in the circumferential direction, particularly a plane that is perpendicular to the axial direction, the load in the axial direction is directly distributed without being dispersed in the radial direction. Since it can be received, it has the effect of being able to withstand heavy loads. Further, the arcuate contact surface to be abutted has a high load bearing capacity in the axial direction as compared with other directions such as the radial direction, and is therefore excellent in durability.

Further, in the assembled state of the cane 100, the first end portion of the cylinder on the large diameter side and the second end portion of the cylinder on the small diameter side are sequentially connected. On the other hand, in the stored state of the cane 100, the first end side of the cylinder on the small diameter side is inserted into the second end side of the cylinder on the large diameter side, so that the small diameter side is inside the cylinder on the large diameter side. The cane 100 has load resistance and durability as described above because the cylinders of the above are sequentially inserted and the plurality of cylinders 103 can be inserted into the first insertion hole 4 of the grip 2. At the same time, it also has the effect of making it compact when not in use. The grip 2 may have any shape such as a columnar shape or a polygonal shape as long as it has a hole extending in the axial direction into which a plurality of cylinders 103 can be inserted.

In this embodiment, as shown in FIGS. 23 and 24, openings are formed on the same side of each of the cylinders, and thus the engaging member 151 and the openings are configured to engage on the same side. ing. However, the openings may be staggered for each adjacent cylinder. Further, although the opening is rectangular, it may have an arbitrary shape such that the first engaging surface is formed perpendicular to the axial direction and extending in the circumferential direction, and the corresponding engaging member is also the second. It may have any shape and structure such that the engaging surface is formed perpendicular to the axial direction and extending in the circumferential direction. Circumferential engagement is, for example, 30% of the entire circumference.

FIG. 25 is a perspective view of the grip 202 according to another embodiment. The grip 202 is more ergonomically formed to fit the palm of the person holding the grip 202 as compared to the grip 2 according to the embodiment described above. A groove 204 extending in the axial direction is formed on the lower surface of the grip 202 during use, that is, the surface facing the ground during use. The groove 204 may be formed on another surface.

Similar to the grip 2 according to the above-described embodiment, the lower surface of the grip 202 is formed with a circular second insertion hole 205 extending in a direction intersecting the axial direction of the grip 202, for example, in an orthogonal direction. An O-ring 206 is fitted in the opening portion of the second insertion hole 205 in order to prevent the inserted cylinder from falling off. Instead of the O-ring 206, an annular protrusion may be formed on the inner peripheral surface of the opening portion. The grip 202 is formed of, for example, a metal material such as SUS material, aluminum material or titanium, or a resin material such as ABS, PE or PP.

FIG. 26 is a perspective view of the cane 200 provided with the grip 202 of FIG. 25, and FIG. 27 is a perspective view of the cane 200 provided with the grip 202 of FIG. 25 in an assembled state. The cane 200 has a grip 202 and a plurality of cylinders 3 having different diameters. The plurality of cylinders 3 are the same as the plurality of cylinders 3 of the first embodiment, but instead of this, the plurality of cylinders 103 of the second embodiment may be used. By inserting a plurality of tubular bodies 3 into the grooves 204 of the grip 202, the stored state (FIG. 26) can be obtained. Further, similarly to the second insertion hole 5 of the grip 2, the cane 200 can be put into the assembled state (FIG. 27) by inserting the plurality of cylinders 3 into the second insertion hole 205 of the grip 202. ..

As shown in FIG. 26, a plurality of tubular bodies 3 may be inserted in the axial direction (arrow X) with respect to the groove 204 of the grip 202 in the retracted state, and are orthogonal to the axial direction. It may be inserted in the direction (arrow Y). Alternatively, the elastic member 8 may be inserted into the groove 204 first, and then the plurality of tubular bodies 3 may be inserted into the groove 204.

The width of the entrance of the groove 204 in the direction of the arrow Y is formed to be slightly narrower than the outer diameter of the plurality of cylinders 3. When a plurality of cylinders 3 are inserted from the arrow Y, the width of the entrance of the groove 204 is widened by the elastic deformation of the material forming the grip 202, and the plurality of cylinders 3 are snapped into the groove 204. .. In other words, the material of the grip 202 is determined to allow for such snap insertion. Even when the plurality of cylinders 3 are inserted into the groove 204, the plurality of cylinders 3 maintain the state of being gripped in the groove 204 by the elasticity of the grip 202, and the arrow X or the arrow is caused by its own weight or vibration. It does not come out in the direction of Y.

1 Cane 2 Grip 3 Multiple cylinders 4 1st insertion hole 5 2nd insertion hole 7 Lid member 10 1st cylinder 20 2nd cylinder 30 3rd cylinder 40 4th cylinder 11, 21, 31, 41 1 end 12, 22, 32, 42 2nd end 100 cane 103 multiple cylinders 150 holding member 151 engaging member 111, 121, 131, 141 1st end 112, 122, 132, 142 2nd end 113, 123, 133 openings

Claims (3)

A cane with multiple cylinders of different diameters
The tubular body has a first end portion and a second end portion, and has a first end portion and a second end portion.
An opening extending in the circumferential direction is formed on the outer peripheral surface of the first end portion of the tubular body.
An engaging member is provided at the second end of the cylinder.
In the stored state of the cane, the cylinder on the small diameter side is sequentially inserted into the cylinder on the large diameter side.
In the assembled state of the cane, each of the cylinders is sequentially pulled out, and the opening of the cylinder on the large diameter side and the engaging member of the cylinder on the small diameter side are engaged with each other in the circumferential direction. And
The engaging member is provided on the columnar holding member, and the engaging member is provided on the columnar holding member.
The holding member is fixedly attached to the second end of the cylinder, and the second end is closed .
With more grip,
The grip is formed with a first insertion hole or groove extending in the axial direction of the grip.
In the stored state of the cane, the plurality of cylinders in which the cylinder on the small diameter side is sequentially inserted into the cylinder on the large diameter side are inserted into the first insertion hole or groove.
The grip is formed with a second insertion hole extending in a direction intersecting the axial direction of the grip, and one of the cylinders is inserted into the second insertion hole in the assembled state of the cane. A cane that features. The opening of the cylinder on the large diameter side has a first engaging surface, and the engaging member of the cylinder on the small diameter side has a second engaging surface.
When the first engaging surface and the second engaging surface come into contact with each other, the opening of the cylinder on the large diameter side and the engaging member of the cylinder on the small diameter side extend in the circumferential direction. The cane according to claim 1, wherein the wand is engaged. The cane according to claim 1 or 2, wherein the engaging member is movable along the radial direction and is urged outward in the radial direction.

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