JP3228936U - Cane for cold regions - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slack or unpleasant sound of a claw portion generated on a claw portion attached to a tip of a cane in a cane for cold regions, a friction sound of contacting an inner wall of an outer tube of the inner shaft tube, and an inner shaft tube when poking the cane. Provided is a cane for cold regions that prevents unpleasant sounds such as a small hitting sound on the inner wall of the outer pipe due to runout. SOLUTION: A cane for cold regions is housed in an outer pipe 1, a grip portion 2 provided at the upper end of the outer pipe 1, a grounding cap 4 provided at the lower end of the outer pipe 1 with a through hole 3, and an outer pipe 1. It has an interior pipe 5 to be formed, an operating rod 6 housed in the grip portion 2, and a non-slip portion 7 for entering and exiting the through hole 3. The non-slip portion 7 is equipped with a claw 8 having a sharp lower end on one side and an O-ring 21 on the other side. One or more O-rings 21 are attached to the outer periphery of the claw portion partially inserted into the lower end of the inner shaft tube 5, and the slack is absorbed by using the crushing allowance of the O-ring 21, and the outer circumference of the inner shaft tube 5 A plurality of O-rings 22 are equipped at appropriate positions, and the inner wall surface of the outer pipe 1 and the outer peripheral surface of the inner shaft pipe 5 are brought into contact with each other via the O-ring 22 to prevent vibration and generate unpleasant sounds such as small striking noise and friction noise. Reduced. [Selection diagram] Fig. 1

Description

The present invention relates to a cane that is convenient for elderly people, disabled people, etc. to use in cold regions and that allows the anti-slip claws to enter and exit with a simple operation.

In cold regions, the road surface tends to be frozen during the winter, and to prevent danger, it is common for elderly people and people with disabilities to use a cane with a non-slip tip when going out. , Attach a non-slip to the tip of the cane separately, fold it so that the sharp tip of the claw faces upward when not using it on a snowy road, and turn it downward to prevent it from slipping when using it on a snowy road. Many models were used.

However, the above was very troublesome because I had to pick up the cane and switch it every time I went in and out of the building. Also, when using it in the absence of snow, the sharp claws are exposed to the outside, so it is extremely dangerous in the case of a crowded place or a fall, and in order to prevent it, Although it is troublesome, you can remove the non-slip part individually, or if you can not do it, prepare two canes with a normal non-slip cane and switch between them, or pay a fee at a cane shop etc. The current situation was that the non-slip had to be removed.

For the purpose of eliminating the above-mentioned inconvenience, the patent No. 3695418 by the applicant's late father has been proposed and commercialized. In the present invention, the handle, which protrudes at least partly from the grip, is rotated or moved in the vertical or horizontal direction, so that when entering or exiting a building or the like, the non-slip claws can be easily operated by the finger operation of the hand holding the handle while walking. Since it is possible to put in and take out the product, there is less risk of entering the building with the claws sticking out, unlike the conventional product, and it is excellent in safety.

Patent No. 3695418

The present invention relates to the improvement of the patent No. 3695418 by the applicant's late father, and since the cane is used for many years, the claw part attached to the tip of the cane is repeatedly loaded or impacted, and the claw part is subjected to repeated load or impact. There were wear, slack, and unpleasant noises, friction noises that came into contact with the inner wall of the outer pipe of the inner shaft pipe, and small hitting noises that hit the inner wall of the outer shaft pipe due to the vibration of the inner shaft pipe when poking the cane. At this time, aside from the wear of the claws, the problem was to reduce unpleasant sounds such as slack, fricative sounds, and small hitting sounds.

One or a plurality of O-rings are attached to the outer circumference of the claw portion partially inserted into the lower end of the inner shaft tube, and the slack is absorbed by utilizing the crushing allowance of the O-rings. In addition, multiple O-rings are installed at appropriate positions on the outer circumference of the inner shaft pipe, and the inner wall surface of the outer pipe and the outer peripheral surface of the inner shaft pipe are brought into contact with each other via the O-ring to prevent vibration and reduce small striking noise and friction noise. It is a thing.

Since the cane is used for many years, the claws attached to the tip of the cane are repeatedly subjected to loads and impacts, causing the claws to wear and loosen, and the vibration contact that occurs between the outer tube and the inner shaft tube. There was a friction noise and a small striking noise. At this time, the claws are replaced with respect to the wear of the claws. However, when the inner shaft tube of the claw is attached, it may loosen after long-term use due to impact, etc., but one or more O-rings are attached to the outer circumference of the claw that is partially inserted into the lower end of the inner shaft tube. , The crushing allowance of the O-ring is used to absorb the slack, and the frictional force of the rubber can prevent it from coming off.

In addition, a plurality of O-rings are installed at appropriate positions on the outer circumference of the inner shaft pipe, and the inner wall surface of the outer pipe and the outer peripheral surface of the inner shaft pipe are brought into contact with each other via the O-ring to prevent vibration and reduce friction noise and small hitting noise. Can be done. That is, the vibration caused by the two-point support of the inner shaft tube due to the impact when the cane is pierced is absorbed and mitigated by the plurality of O-rings equipped on the inner shaft pipe, thereby eliminating the unpleasant noise. The O-ring used for this is set so that a large O-ring tension allowance is provided for the outer diameter of the inner shaft pipe and almost no O-ring crushing allowance is provided for the inner surface of the outer pipe. To do. As a result, the O-ring has almost no friction with the inner surface of the outer tube when the claws are taken in and out, so that the operation of putting in and out the claws is not affected and the O-ring is not worn.

It is sectional drawing which put the nail in the cane in one Example which carried out the present invention. It is sectional drawing which put out the nail in one Example which carried out the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 and 2 show an embodiment of the cane for cold regions of the present invention. Reference numeral 1 denotes an exterior pipe, which is provided with a resin grip 2 at the upper end and a small-diameter through hole 3 at the lower end. In addition, a grounding cap 4 made of wear-resistant rubber or soft resin is connected. Reference numeral 5 denotes an inner shaft tube housed in the outer tube 1. An operating rod 6 housed in the grip portion 2 is connected to the upper end, and a non-slip portion 7 entering and exiting the through hole 3 is connected to the lower end. There is. The non-slip portion 7 is equipped with a claw 8 whose lower end is sharply processed so that it can easily be pierced by snow and ice, and a non-slip portion O-ring 21 which is inserted into the lower end of the inner shaft tube 5 on the other side.

The grip portion 2 forms a vertically long rectangular notch window 9 at the front end, and the handle 10 is hinged by a shaft pin 11 serving as a fulcrum. The handle 10 has a lever portion 12 formed at one end and a bifurcated joint portion 13 formed at the other end.

The operating rod 6 is formed to have a small diameter so that the upper portion can be fitted into the joint portion 13, and a small diameter lateral groove 14 and a large diameter groove 15 having a deepened lower end portion are provided at the upper end portion so as to open laterally. The pin 16 inserted into the tip of the coupling portion 13 of the handle 10 is locked to the small-diameter lateral groove 14 and the large-diameter groove 15, and the handle 10 and the operating rod 6 are coupled. The large-diameter groove 15 is formed deeper than the small-diameter lateral groove 14 by a radius of the pin 16 or more.

Further, a roll pin 17 is inserted below the small-diameter lateral groove 14 of the operating rod 6 with both ends protruding, and a bifurcated torsion spring 18 is attached to the roll pin 17 so as to constantly apply pressing force to the handle 10. .. Reference numeral 19 denotes a bearing washer with which the outer tube 1 abuts.

Further, two inner shaft pipe O-rings 22 are provided at appropriate positions on the upper and lower outer circumferences of the inner shaft pipe 5, and the inner wall surface of the outer pipe 1 and the outer peripheral surface of the inner shaft pipe 5 are slightly brought into contact with each other via the O-ring. ing. The O-ring used for this is provided with a large O-ring tension allowance for the outer diameter of the inner shaft tube 5, and the O-ring crushing allowance is hardly provided for the inner surface of the outer tube 1. It has been set.

FIG. 1 shows a normal state in which the claw 8 of the non-slip portion 7 is housed in the ground contact cap 4, and the upper end of the operating rod 6 is the inner upper end of the grip portion 2 or the lower end of the lever portion 12 is below the grip portion 2. Although it is in contact with the front end on the side and stopped, when using it on a winter road in an emergency state, it is sufficient to put a finger on the lever portion 12 of the handle 10 and pull it upward, and the handle 10 is a shaft pin 11. The pin 16 also descends and continues to descend while moving to the right side of the figure in the first half of the rotation and to the left side in the second half of the rotation. Along with this, the operation stick 6 also descends and rotates by about 120 °, and the shoulder portion 20 of the non-slip portion 7 or the upper end of the lever 12 abuts on the upper front end portion of the grip portion 2 and stops. Become.

Further, when the claw 8 touches the ground, an ascending force is generated on the operating rod 6, and the pin 16 comes into contact with the lower end of the large diameter groove 15 and stops. In this state, the claw 8 projects long downward from the through hole 3, the pin 16 enters the large-diameter groove 15, and the torsion spring 18 acts as a force to rotate the handle 10 upward. Therefore, even if the static upward force or impact force acting on the inner shaft 5 is large, the pin 16 does not go over the large diameter groove 15 deeper than the radius and enter the small diameter lateral groove 14, and therefore, the handle Unless the 10 is rotated, the so-called self-propelled movement in which the claw 8 enters the grounding cap 4 does not occur. Further, even in the state of FIG. 1, since the torsion spring 18 acts as a force for rotating the handle 10 downward, the claw 8 protrudes from the grounding cap 4 due to the weight of the inner shaft 5 or the like. , Self-propelled in the opposite direction does not occur.

In FIGS. 1 and 2, when the cane is struck on the ground, the grip portion 2 and the cap 4 are contact-fixed to the hand and the ground, respectively. However, since the inner shaft tube 5, the non-slip portion 7, the operation culm 6, the claw 8 and the like have clearances with the corresponding surfaces, the impact of piercing the cane causes vibration, and an impact sound is generated at each corresponding surface. Was there.

However, two inner shaft pipe O-rings 22 are provided at appropriate positions on the upper and lower outer circumferences of the inner shaft pipe 5, and a large tension margin of the inner shaft pipe O-ring 22 is provided with respect to the outer diameter of the inner shaft pipe 5. Almost no O-ring crushing allowance is provided on the inner surface of the outer pipe 1, and the inner wall surface of the outer pipe 1 and the outer peripheral surface of the inner shaft pipe 5 are slightly brought into contact with each other via the O-ring.

Further, by attaching the anti-slip O-ring 21 to the portion of the anti-slip portion 7 inserted into the lower end of the inner shaft pipe 5, the shock vibration generated there is absorbed and the generation of abnormal noise during use is eliminated.

That is, in the present invention, the impact vibration generated when the cane pokes the ground acts on the clearance of the internal constituent members of the cane, and each member also vibrates, so that it is generated as an unpleasant sound. In order to prevent this, an elastic body with an O-ring absorbs shock vibration to eliminate unpleasant noise.

1. 1. Exterior pipe 2. Grip part 3. Through hole 4. Cap 5. Inner shaft tube 6. Operation culm 7. Non-slip part 8. Nail 9. Notched window 10. Handle 11. Shaft pin 12. Lever part 13. Joining part 14. Small diameter lateral groove 15. Large diameter groove 16. Pin 17. Roll pin 18. Torsion spring 19. Washer 20. Shoulder 21. Non-slip part 22. Inner shaft tube O-ring

Claims (1)

An outer pipe, a resin-molded grip portion connected to the upper end of the outer pipe and at least partially opened at the front end, a ground cap connected to the lower end of the outer pipe and having a through hole at the lower end, and the outer pipe. The inner shaft tube housed inside, the operating rod connected to the upper end of the inner shaft tube and housed in the grip portion, and the operating rod connected to the operating rod and constantly pressed by a spring to be exposed to the front end portion of the grip portion. It has a handle and a claw portion that is partially inserted and equipped at the lower end of the inner shaft pipe that enters and exits the through hole of the ground cap, and the claw portion enters and exits from the through hole of the ground cap by operating the handle up and down. One or more O-rings are attached to the outer periphery of the claw portion that is partially inserted into the lower end of the inner shaft tube, and a plurality of O-rings are attached at appropriate positions on the outer circumference of the inner shaft tube. A cane for cold regions characterized by being equipped with an O-ring.

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