Electric telescopic stick
A technology of electric retractable and crutches, which is applied in the direction of walking sticks, travel goods, applications, etc., and can solve the problems of not being able to stretch one by one, slow stretching, etc.
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Embodiment 1
[0029] figure 1 as well as figure 2 Among them, the fixed crutch part 2 and the movable crutch part 3 are hollow outer tubes and inner tubes constituting the main body of the crutches, which are made of light weight, high bending strength carbon tubes, aluminum alloys such as duralumin and other metal materials. The handle part 1 is attached to the upper part of the part 2.
[0030] An electric motor 7 , a control circuit board 12 for driving the motor, a rechargeable lithium ion battery 11 , and a switch 6 are built in the handle portion 1 . In addition, the electric motor 7 is rotationally driven in forward and reverse directions by operating the switch 6 of the handle portion 1 . In addition, the outer surface of the handle portion 1 is covered with a soft member of soft synthetic rubber or foamed resin.
[0031] The crutch main body is composed of a large-diameter fixed crutch part 2 and a movable crutch part 3 inserted into the fixed crutch part 2 so as to be slidable...
Embodiment 2
[0035] exist figure 2 The lower end of a plurality of feed threads is assembled with a buffer device composed of sliding hardware 13, spring retainer 14, spring 15, and sleeve 16. According to this, although the nut member 5 and spring retainer 14 are stretched out at the maximum The collision is further compressed by the spring 15, but the clutch moves before the spring 15 contracts, and the occlusal adhesion (食いつき付) of the thread can be eliminated. From this state, the crutches can be contracted without any problem by reversing the rotation with the switch 6 .
[0036] image 3 In the example of the clutch used in the present invention, the spring 26 and the steel ball 25 that are accommodated in the deep hole 24 provided on one of the rotating shafts 22 only in the extending direction are provided on a plurality of feed screw connection shafts. The abutment hole 23 on the opposite surface of 21, that is, with the depth of the steel ball 25 entering the center, the two-ho...
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