CN2409817Y

CN2409817Y - telescopic walking stick

Info

Publication number: CN2409817Y
Application number: CN 00227504
Authority: CN
Inventors: 刘显桐
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-03-10
Filing date: 2000-03-10
Publication date: 2000-12-13
Anticipated expiration: 2010-03-10
Also published as: HK1057962A2

Abstract

The utility model discloses a telescopic stick, by the handle, outer branch, inner support pole and expansion joint etc. constitute, this expansion joint comprises expansion double-screw bolt and expansion nut, the expansion double-screw bolt has a toper section, expansion nut one end is the inflation pipe, has a plurality of axial grooves on the pipe wall to fall into a plurality of inflation pieces to the inflation pipe, when expansion double-screw bolt screw in inflation nut, the inflation pipe is bloomed by the toper section, the inflation piece of blooming tightly forces outer branch, through frictional force between them upper and lower branch locking. The utility model discloses stepless altitude mixture control can be realized, and simple structure, regulation convenience, safe and reliable.

Description

Telescopic walking stick

The utility model relates to a kind of walking stick, especially height-adjustable walking stick.

The walking stick that people use, regular length normally, the users different for height not necessarily are suitable for, and because volume is long thereby carry and deposit inconvenience.Granted publication number be CN2322440Y patent disclosure a kind of portable walking stick, it is formed by connecting from beginning to end by the descending conical tube of number joint diameter, each pipe joint locks by each pin-and-hole, pin, trouble is installed and regulate all to this structure.Granted publication number be CN2326043Y patent disclosure a kind of telescopic walking stick, its upper rack posts and lower fulcrum bar are by alignment pin, spring and locating hole locking, its shortcoming is to use in the process alignment pin to be easy to be pressed and make walking stick to shrink by unexpected external force, thereby security is relatively poor.And the walking stick of above-mentioned two kinds of forms all is to determine the length of walking stick by the position of selected pin-and-hole (or locating hole), thereby is to have the height of level to regulate, and is not stepless arbitrary height adjusting.

The purpose of this utility model overcomes above-mentioned weak point and provides a kind of step-less adjustment height of realizing, easy to operate, safe and reliable, portable telescopic walking stick.

The purpose of this utility model is achieved by the following scheme: this telescopic walking stick is made of handle, outer pole and inner supporting rod etc., inner supporting rod is connected by an expansion pipe with outer pole, and this expansion pipe is made up of expansion double-screw bolt and expansion nut with threaded engagement.Expansion double-screw bolt head is fixed in the inner supporting rod end, it between head and thread segment conical section, expansion nut is one section expansion tube near conical section one end, external diameter is slightly littler than outer pole internal diameter, there is some roads axial groove that expansion tube is divided into some expansion pieces on the tube wall, the expansion nut other end is one section elastic tube, and its external diameter is an interference fit with outer pole internal diameter, has some roads axial groove that elastic tube is divided into some flexure strips on the tube wall.

Adopt telescopic walking stick of the present utility model, when the expansion double-screw bolt screws in expansion nut, expansion tube is burst forth by conical section, and the expansion piece that bursts forth is pressed outer pole hard, by the frictional force between them upper rack posts and lower fulcrum bar secure lock.In the time will changing the walking stick height,, firmly screw expansion pipe again behind the relative position of flexible inside and outside pole and get final product as long as unscrew expansion pipe.Thereby the utility model can regulate arbitrarily height, and simple in structure, easy to adjust, safe and reliable.

Below in conjunction with accompanying drawing the utility model is further described specifically.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structure enlarged diagram of expansion pipe.

Fig. 3 is the cross section enlarged diagram of expansion tube.

Referring to Fig. 1～3, because elastic tube 7 external diameters are interference fit with outer pole 2 internal diameters, thereby the external mutually pole 2 of expansion nut 5 is circumferentially fixing, and expansion double-screw bolt 6 is fixed on lower fulcrum bar 3 ends, so when two hands rotate upper rack posts 2 with lower fulcrum bar 3 respectively, i.e. expansion nut 5 and the 6 relative rotations of expansion double-screw bolt.Again owing to have some roads axial grooves (accompanying drawing is not shown) on the tube wall of the elastic tube 7 of expansion nut 5, it is fan-shaped flexure strip that elastic tube 7 tube walls are divided into some cross sections, when moving axially expansion pipe 4, flexure strip is pressed into to the axle center, so expansion pipe 4 is moved up and down in the pole 2 outside smoothly.Stretch out the relative length of outer pole 2 according to the selected inner supporting rod 3 of user's height before using, two hands are being held upper rack posts 2 and lower fulcrum bar 3 relative rotations respectively, and expansion double-screw bolt 6 is screwed in to expansion nut 5.Owing to have axial groove 11 on expansion tube 8 tube walls of expansion nut 5, it is fan-shaped expansion piece 12 that expansion tube 8 is divided into some cross sections, conical section 9 screw-in expansion tubes 8 when expansion double-screw bolt 6, expansion piece 12 outwards bursts forth, press outer pole 2 inwalls hard, produce powerful frictional force between expansion piece 12 and outer pole 2 inwalls, upper and lower pole is just locked.In the time will changing the walking stick height, the upper and lower pole of reverse rotation, conical section 9 withdraws from from expansion nut 5, expansion piece 12 resets, expansion pipe 4 this moment and 2 of outer poles have only the frictional force between elastic tube 7 and outer pole 2 inwalls, have readjusted the walking stick height so can move up and down expansion pipe 4 again.

In order to prevent that whole expansion double-screw bolt 6 breaks away from expansion nut 5 and causes the inconvenience of adjusting operation, can screw out length with confined expansion double-screw bolt 6 at the terminal box nut 10 of installing of expansion double-screw bolt 6 thread segments, make expansion double-screw bolt 6 keep linking together all the time with expansion nut 5.Obviously, if box nut 10 is transformed to pin, plain nut etc. also should be within protection domain.

The expansion tube 8 and the elastic tube 7 of expansion nut 5 are selected the plastics manufacturing for use, and it has the better elastic deformation properties, and and outer pole 2 inwalls between can produce bigger frictional force, make the utility model more safe and reliable.

When not in use,, screw locking, can carry easily and deposit 2 li of the outer poles of inner supporting rod 3 indentations.

Claims

1, a kind of telescopic walking stick, comprise handle (1), outer pole (2) and inner supporting rod (3), it is characterized in that: outer pole (2) is connected by an expansion pipe (4) with inner supporting rod (3), and this expansion pipe (4) is made up of expansion double-screw bolt (6) and expansion nut (5) with threaded engagement; Expansion double-screw bolt (6) head is fixed in inner supporting rod (3) end, it between head and thread segment conical section (9), expansion nut (5) is one section expansion tube (8) near an end of conical section (9), there are some roads axial grooves (11) that expansion tube (8) is divided into some expansion pieces (12) on the tube wall, expansion nut (5) other end is one section elastic tube (7), its external diameter is an interference fit with outer pole (2) internal diameter, has some roads axial groove that elastic tube (7) is divided into some flexure strips on the tube wall.

2, telescopic walking stick according to claim 1 is characterized in that: the terminal box nut (10) of installing of described expansion double-screw bolt (6) thread segment.

3, telescopic walking stick according to claim 1 and 2 is characterized in that: the expansion tube (8) of described expansion nut (6) is made of plastics with elastic tube (7).