JPWO2017203697A1 - Elastic telescopic cane - Google Patents

Abstract

It provides an elastic telescopic cane which can be used as a muscle strengthening cane for athlete training or as a walking aid for the pedestrian. A stretchable elastic telescopic cane (1) having an elastic mechanism and capable of stretching and expansion, a cane main body (10), a grip portion (91) attached to the upper end of the cane main body (10), and a cane main body 10) has a stone projection (92) attached to the lower end portion of the cane body (10), the inner pipe (12) is inserted into the outer pipe (11) to be expandable and elastic, and An air chamber (60) that can be sealed is formed. And the cane main body (10) is provided with a valve (50) communicating with the air chamber (60), and the air chamber (60) can be opened to the atmosphere or sealed by opening and closing the valve (50).

Description

  The present invention relates to an elastic telescopic cane that can be used as a support cane for people with walking difficulties or as a muscle-reinforced cane that exerts a load on the upper arm of a user by stretching with elasticity.

  2. Description of the Related Art Conventionally, a support cane that assists in walking is used in the case where the body is weakened or the body is broken. Patent Document 1 introduces a supporting cane that is elastic and stretchable to absorb an impact from the ground.

Also, many athletic canes are used, such as downhill ski stock, cross country ski stock and Nordic walking pole.
Patent Document 2 introduces a resilient and stretchable muscle cane that is used by ski athletes and the like to strengthen the muscle strength of the upper arm pushing the ground.

  In this muscle-reinforced cane, the inner pipe is inserted into the outer pipe to expand and contract, and an elastic body such as rubber is provided between the outer pipe and the inner pipe. When the user strongly presses the ground with this cane, the elastic force acts on the elastic body to strengthen the upper arm muscles.

In this muscle-reinforced cane, since an elastic body such as rubber is used as an elastic mechanism, the reaction force of the elastic body is proportional to the elongation rate of the elastic body. That is, a reaction force proportional to the compression length is obtained. Then, if the extendable length is increased, the stroke compressed by the user becomes longer, and the maximum value of the reaction force obtained can be increased.
The stroke can be adjusted by attaching an adjusting ring to the cane, and the user can change the stroke to adjust the reaction force.

However, it is preferable that the strength of the reaction force and the stroke can be adjusted separately, if possible.
That is, it is preferable that the reaction force from the elastic body can be adjusted according to the physical strength of the user, etc., and should be adjusted by the cross sectional area of the elastic body. Moreover, it is preferable that a stroke can be adjusted irrespective of a reaction force according to a user's body type and a use content.

JP 2001-211915 A Patent No. 5890590

An object of the present invention is to provide an elastic telescopic cane for use as a muscle strengthening cane for training such as downhill skiing and nordic walking athletes. And while being able to obtain the required reaction force, it is possible to adjust a stroke freely and to provide an elastic telescopic stick excellent in practicability.
Another object of the present invention is to provide an elastic telescopic cane used as a walking cane.

  In order to achieve the above object, the elastic telescopic cane of the present invention is an elastic telescopic elastic cane, which has an elastic mechanism and is expandable and cane main body, and a grip portion attached to the upper end of the cane main body The cane main body includes a stone protrusion attached to the lower end portion of the cane body, and the cane main body is formed to be extendable by inserting an inner pipe into an outer pipe, and an air chamber which can be sealed as the elastic mechanism is formed. It is characterized by

The wand main body may be provided with a valve communicating with the air chamber, and the air chamber may be open to the atmosphere or sealed by opening and closing the valve.
Moreover, it can be set as the structure provided with the adjustment member which can adjust the length of the said cane main body.

According to the above configuration, a competitor such as ski can perform training to strengthen the muscles of the upper arm pushing the ground by walking using the elastic telescopic cane of the present invention.
Further, since the air chamber is used as the elastic mechanism, the stroke to be compressed can be freely changed by opening and closing the valve to change the volume of the air chamber at atmospheric pressure. Even if the stroke is changed, it is possible to obtain the maximum reaction force according to the user's strength.

  Further, by making the air chamber smaller and shortening the stroke, it is possible to make the elastic stretchable cane suitable as an auxiliary cane.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic external view which shows an example of the elastic extensible cane of this invention. It is a partially sectioned outline outline figure showing each member which constitutes a cane main part. It is a partially sectioned outline outline figure showing an air room. It is explanatory drawing which shows the relationship of a valve | bulb, a plug member, and an air chamber. It is the schematic of the connection member which connects an outer tube | pipe and an inner tube | pipe. FIG. 10 is a schematic view of an adjusting member for adjusting the length of the cane body. It is explanatory drawing regarding the basic length of an air chamber. It is explanatory drawing which shows the volume of an air chamber, and the relationship of reaction force. It is the schematic which shows the other example of an air chamber.

FIG. 1 is a schematic external view of an elastic telescopic wand 1 which is an example of the present invention.
The elastic telescopic cane 1 is composed of a cane main body 10, a grip portion 91 and a stone projection 92.

The cane main body 10 is constituted by an upper pipe 20, an intermediate pipe 30 and a lower pipe 40.
The upper side of the intermediate pipe 30 is inserted into the upper pipe 20 via the connection member 70, and an air chamber 60 described later with reference to FIG. 3 is formed.
The upper side of the lower pipe 40 is inserted into the middle pipe 30 from the lower side, and the length of the cane main body 10 can be adjusted by the adjustment member 80 described later in FIG.

  FIG. 2 shows the cane main body 10 in a disassembled state, and shows the upper pipe 20, the middle pipe 30, and the lower pipe 40, respectively.

The upper pipe 20 is a member that functions as a cylinder that receives the piston member 31 of the intermediate pipe 30. A plug member 21 is provided inside and a valve 50 is provided outside.
The plug member 21 is a member for closing the upper end portion of the upper pipe 20.
The valve 50 forms a flow path of air together with the pipe member 51 and the plug member 21 to bring the inside of the upper pipe 20 into the air released state or the sealed state.

  The upper pipe 20 includes the inner ring portion 71 of the connecting member 70, and the middle pipe 30 includes the outer ring portion 72 of the connecting member 70. The connecting member 70 enables the upper pipe 20 and the intermediate pipe 30 to be connected in an expandable manner.

The intermediate pipe 30 has a piston member 31 at its upper end, and is inserted into the upper pipe 20 to form a sealable air chamber 60 (see FIG. 3).
The stopper 73 constitutes the connection member 70 together with the outer ring portion 72.
At the lower end of the intermediate pipe 30, a knob 93 is provided.

  The lower pipe 40 has an adjustment member 80 at its upper end, can be inserted from the lower side of the intermediate pipe 30, and can be fixed at any position. By this, the length of the cane main body 10 can be adjusted. The lower end portion is provided with a stone protrusion 92.

FIG. 3 shows a state in which the upper pipe 20 and the intermediate pipe 30 are connected so as to be able to expand and contract by the connecting member 70 and a state in which the sealable air chamber 60 is formed by the plug member 21 and the piston member 31. It shows.
Hereinafter, in order to simplify the description regarding the air chamber 60, the upper pipe 20 is described as the outer pipe 11, and the intermediate pipe 30 is described as the inner pipe 12.

The air chamber 60 can be sealed by the plug member 21 and the piston member 31. Then, when the grip 91 is held and the ground is pushed by the stone projection 92, the air chamber 60 is compressed to generate a reaction force. That is, the inner pipe 12 is connected to the outer pipe 11 so as to be expandable and contractible, and the air chamber 60 functions as an elastic mechanism.
Here, when the air chamber 60 is at atmospheric pressure, the length from the lower end of the plug member 21 shown in FIG. 3 to the upper end of the piston member 31 will be referred to as the basic length L of the air chamber 60.

FIG. 4 is an explanatory view showing the relationship between the valve 50, the plug member 21 and the air chamber 60. As shown in FIG.
The plug member 21 is a cylindrical plug body 22 provided with two O-rings 23 and 23 and is fixed to the upper portion of the outer tube 11 by adhesion or the like. The air vents 25 communicate with the air chamber 60.

  The valve 50 is configured to open and close the vent 55 by the valve body 57 coming close to and separating from the valve seat 56. That is, by turning the knob 52, the end of the vent 55 can be opened and closed, and the valve 57 can be brought into close contact with the valve seat 56 to close the end of the vent 55.

The pipe member 51 communicates the vent hole 55 and the vent hole 25 in a state in which the air-tightness is maintained. And, by bringing the valve body 57 into close contact with the valve seat 56, the air chamber 60 can be sealed. On the other hand, when the valve body 57 is separated from the valve seat 56, the vicinity of the valve seat 56 is open to the atmosphere.
After all, when the valve 50 is closed, the air chamber 60 is kept in a closed state, and when the valve 50 is opened, the air chamber 60 is kept in the atmosphere open state.

FIG. 5 shows the upper end of the inner pipe 12.
A piston member 31 is attached to an upper end portion of the inner pipe 12. The piston member 31 is a cylindrical piston main body 32 provided with two O-rings 33, 33, and is fixed to the upper end portion of the inner pipe 12.
When the inner pipe 12 is inserted from the lower side of the outer pipe 11, an air chamber 60 which can be sealed by the piston member 31 can be formed.

Moreover, FIG. 5 has shown the connection member 70 which connects the outer tube | pipe 11 and the inner tube | pipe 12 so that expansion-contraction is possible.
The inner ring portion 71 of the connecting member 70 is attached to the lower end portion of the outer tube 11 with a male screw 75.
The outer ring portion 72 of the connection member 70 is provided with a female screw 76, and the inner pipe 12 is inserted together with the stopper 73.

  By screwing the male screw 75 and the female screw 76, the outer pipe 11 and the inner pipe 12 are connected. Then, the inner pipe 12 can be inserted into the outer pipe 11 in a state where it is inserted into the axial hole 77 provided in the outer ring portion 72. For this reason, the outer pipe 11 and the inner pipe 12 are connected in an expandable manner. The stopper 73 prevents the piston member 31 from coming out of the shaft hole 77.

FIG. 6 shows an adjusting member 80 for adjusting the length at the connecting portion of the middle pipe 30 and the lower pipe 40. Patent Document 2 has a similar description, and therefore will be briefly described here.
The shaft member 41 provided with the inclined surface 42 is fixed to the upper end of the lower pipe 40, and the shaft member 41 is provided with a male screw. On the other hand, the braking member 81 provided with the slit 82 is provided with a female screw and is screwed with the male screw of the shaft member 41.

When the lower pipe 40 is inserted into the intermediate pipe 30 and rotated relative to each other, the braking member 81 rotates integrally with the intermediate pipe 30 and moves in the axial direction relative to the shaft member 41.
When the braking member 81 approaches the lower pipe 40, the diameter near the slit 82 is enlarged by the inclined surface 42, and the intermediate pipe 30 and the lower pipe 40 are fixed. Conversely, when the braking member 81 separates from the lower pipe 40, the diameter in the vicinity of the slit 82 is reduced and the fixing is released.

  Therefore, the lower pipe 40 inserted into the intermediate pipe 30 can be fixed at any position by the adjusting member 80, whereby the length of the cane body 10 can be freely adjusted.

The change of the stroke performed by changing the volume of the air chamber 60 will be described with reference to FIG.
As described above, when the valve 50 is opened, the air chamber 60 is open to the atmosphere. Here, when the inner pipe 12 is moved in the direction of inserting the outer pipe 11, the air in the air chamber 60 is released from the valve 50 to the atmosphere via the vent holes 25 and 55. Conversely, when the inner pipe 12 is moved in the pulling direction with respect to the outer pipe 11, air intrudes into the air chamber 60 from the valve 50 via the vent holes 25 and 55.
Therefore, the outer pipe 11 and the inner pipe 12 can be freely expanded and contracted.

When the valve 50 is closed at an arbitrary position in the range in which the outer pipe 11 and the inner pipe 12 can expand and contract, the air chamber 60 can be sealed at atmospheric pressure at that position.
Therefore, the basic length L defined in FIG. 3 can be freely determined within this range.

  As shown in FIG. 7 as air chambers 60a, 60b, 60c, the volume of air chamber 60 can be freely changed and can be easily selected directly by the user. The air chamber 60a is the case where the inner pipe 12 is positioned at the lowermost position with respect to the outer pipe 11, and the user can obtain the maximum stroke. A large stroke can produce a great effect as a muscle strengthening cane. Further, when the stroke is reduced as in the air chamber 60c, a great effect can be obtained as an auxiliary wand.

The reaction force that the user receives on the arm will be described with reference to FIG.
First, in FIG. 3, the length of the sealed air chamber 60 when the inside is at atmospheric pressure is called the basic length L. FIG. 7 also shows that the basic length L can be set freely.
For the basic length L, let a stroke S be a length contracted by the user's force. Then, it is assumed that the pressure of the air chamber 60 changes from 1 atm (atmospheric pressure) to (P + 1) atm.

At this time, the following relationship is established by the laws of physics.
P + 1 = L / (L−S)

That is, the value of P is determined only by the value of (S / L) regardless of the value of L.
FIG. 8 is a graph showing the relationship between S / L (%) and P (atm).
For example, it is 0 atm when S / L is 0%, 0.67 atm when 40%, 1 atm when 50%, and 1.5 atm when 60%.

A value obtained by multiplying the value of P by the cross-sectional area of the air chamber 60 is a reaction force applied to the arm of the user.
The cross-sectional area of the air chamber 60 can be about 1 to 5 cm ² .

  Although the embodiment of the present invention has been described above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes to the extent that they do not deviate from the scope of the present invention are included in the present invention. included.

For example, a deformed elastic telescopic cane 1x described side by side with the elastic telescopic cane 1 in FIG. 9 is also included in the present invention.
In the elastic telescopic wand 1, an air chamber 60 is formed in the outer pipe 11, but in the elastic telescopic wand 1x, an air chamber 60x is formed in the outer pipe 11 and the inner pipe 12.
A plug member 35x for closing the inside of the inner pipe 12 is provided, and a piston member 31x provided with a vent 36x is used. The outer pipe 11 and the inner pipe 12 are in communication with each other by the vent holes 36x.

  Also, the valve 50 is not limited to the shape shown in FIG. 4 and any type of valve may be used as long as it can be sealed.

  The elastic telescopic wand 1 of the present invention can freely select the stroke when the user presses the ground. Therefore, it is highly practical and can be used as a muscle strengthening cane that athletes use for upper arm training, and can also be used as a walking cane for pedestrians.

Claims (3)

A stretchable elastic telescopic wand,
It has an elastic mechanism and can be extended and contracted, a grip portion attached to the upper end of the cane main body, and a stone projection attached to the lower end of the cane main body,
An elastic expandable cane characterized in that the cane main body is formed to be expandable and contractible by inserting an inner pipe into an outer pipe and an air chamber which can be sealed as the elastic mechanism is formed.   The elastic telescopic wand according to claim 1, wherein the wand body is provided with a valve communicating with the air chamber, and the air chamber is opened to the atmosphere or closed by opening and closing the valve. The elastic telescopic cane according to claim 1 or 2, further comprising an adjusting member capable of adjusting the length of the cane main body.

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