CN202270310U

CN202270310U - Flexible positioning device for alpenstock

Info

Publication number: CN202270310U
Application number: CN2011203091358U
Authority: CN
Inventors: 金兴方
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-22
Filing date: 2011-08-22
Publication date: 2012-06-13
Anticipated expiration: 2021-08-22

Abstract

The utility model provides a flexible positioning device for an alpenstock. The flexible positioning device comprises a central rod, a bushing ring and an expansion part, wherein the central rod is provided with an external thread; the bushing ring and the expansion part are sleeved outside the central rod; the bushing ring is provided with an external conical surface with big top and small bottom; an internal thread which is matched with the external thread of the central rod is arranged in the bushing ring; an upper side face of the expansion part is provided with an axial notch and is divided into at least two expansion sheets; and when the bushing ring moves downward under the effect of rotation relative to the central rod, the expansion sheets are gradually expanded under the action of the external conical surface of the bushing ring till the expansion sheets are clung to an inner wall of a first cane tube. The flexible positioning device can be switched between an expanding state and a contracting state in a manner of rotating the cane tubes of the alpenstock; the effect of fixing the cane tubes of the alpenstock is excellent; the expansion part and the bushing ring are in fit with each other through the conical surface; the expansion performance is higher; the expansion part can expand to be in sufficient volume under the action of a smaller rotating force; and the frictional forces required by fixing all the cane tubes are obtained.

Description

A kind of alpin-stock telescopic positioning device

Technical field

The utility model relates to the alpin-stock technical field, particularly, relates to a kind of alpin-stock telescopic positioning device.

Background technology

Traditional alpin-stock has stick handle, at least two walking stick pipes and the first-class parts of walking stick cane; At least wherein the first cane pipe and the second cane pipe connect through telescopic positioning device, and telescopic positioning device can switch alpin-stock cane pipe between mutual cover contracts or interfixes.When connecting the first cane pipe and the second cane pipe through telescopic positioning device, the upper end of telescopic positioning device can be changed between being fixedly connected and flexibly connecting with the connected mode of the first cane pipe, and its lower end is fixedly connected with the second cane pipe.In addition, telescopic positioning device can also the added resilience buffer unit, thereby makes alpin-stock have the buffering and shock preventing function.

Particularly, said buffer unit upper end is provided with the adjustable expansion element of diameter, connects the first cane pipe of alpin-stock through expansion element; When the needs alpin-stock carries out support works, regulate expansion element and make its chucking first cane pipe that expands, thereby win cane pipe and the second cane pipe are interfixed; When needing the length of telescopic adjustment alpin-stock; For example shorten the walking stick pipe deposit alpin-stock, elongation walking stick pipe prepare to use alpin-stock, or when regulating alpin-stock length according to road and user's height; Regulate expansion element and make its contraction no longer tighten the first cane pipe, thereby the cane pipe of winning can freely be stretched with respect to the second cane pipe.

For example one Chinese patent application number has disclosed a kind of such structure for CN200420019725.7 " alpin-stock, ski stick telescopic positioning device ": a kind of alpin-stock; Its buffer unit includes primary branch, is located in the extension in the primary branch; Said extension upper end is provided with the screw rod that is fixed in the said primary branch, is provided with the upper and lower expanding block of mutual applying in the said extension; The said expanding block lower surface of going up is the inclined-plane of working in coordination with following expanding block upper surface; The side of said upper and lower expanding block supports to arrive at said primary branch inwall; The said expanding block top of going up is provided with the upper limit block; Said expanding block down below is provided with the lower limit block, is provided with shock-proof spring in the said extension.In this technical scheme; Because said expansion element is to form through the expanding block that two inclined-planes cooperatively interact; Its pressure to primary branch only is directly proportional with the downforce of postrotational screw, and at when mountain-climbing user's inconvenience rotary screw energetically often, makes that the outside bulbs of pressure of expanding block are less; Thereby the frictional force between expanding block and the primary branch is also less, has influenced the fixed effect between the cane pipe; Secondly, when rotary screw,, assemble again after just need alpin-stock being taken apart on the screw rod, bother very much and again screw is installed to if rotation excessively then can cause screw and screw rod to be separated; In addition; For the alpin-stock that has a plurality of cane pipes; Only need one to have the telescopic positioning device of buffering and shock preventing function or the buffering and shock preventing element is set separately and can reach the required buffering and shock-proof effect of alpin-stock, and if every pair of adjacent cane pipe of alpin-stock all adopts the telescopic positioning device that has the buffering and shock preventing function, not only the telescopic positioning device structure is too complicated; And can cause the waste of certain degree, therefore need to do further to improve.

The utility model content

The problem that the utility model will solve is: the problem to above-mentioned existence provides a kind of good fixing effect, assembles alpin-stock telescopic positioning device firm, cramped construction.

The technical scheme that the utility model adopted is: a kind of alpin-stock telescopic positioning device is provided; Its with alpin-stock in two adjacent cane pipes that contract that join end to end and can overlap each other in the first cane pipe and the second cane pipe be connected; The top of said telescopic positioning device can lock or release by the relative first cane pipe; The bottom of said telescopic positioning device is fixedly connected with the second cane pipe; It is characterized in that: said telescopic positioning device comprises and has externally threaded center-pole and be set in center-pole outer grommet and expansion part that said grommet has up big and down small male cone (strobilus masculinus), and said grommet inside is provided with and the suitable internal thread of the external screw thread of said center-pole; The upper side of said expansion part has axial cut-outs and is separated at least two expanding plates; The lower end of said expansion part is said relatively center-pole axial location, and when said grommet moved down because of rotating relative to center-pole, said expanding plate was progressively expanded under the male cone (strobilus masculinus) effect of said grommet until being close to the residence and stated the inwall of the first cane pipe.

In order to prevent to skid owing to frictional force is not enough between grommet and the expansion part; Though especially both skid when grommet contacts expansion part but outwards do not push expansion part; Therefore the projection that on said grommet outer surface, is provided with the no more than said axial cut-outs of quantity and is complementary with corresponding said axial cut-outs; Make expansion part when rotated, guarantee to drive grommet and rotate synchronously.

Preferably; One of them axial cut-outs that said expansion part has is axially to run through whole said expansion part side from top to bottom; Thereby make things convenient for expansion part to be installed on the center-pole from the center-pole side, and make expansion part institute ability expansion distance bigger through this axial cut-outs that runs through.

In order to locate expansion part, the lower inside of said expansion part is provided with inwardly protruded bulge loop, and said center-pole is provided with the groove that is complementary with said bulge loop, bulge loop is snapped onto in the groove, thus the axially-movable of the relative center-pole of restriction expansion part.

Further, the lower end of said center-pole also is provided with the plastic pipe sleeve that the internal diameter of an external diameter and the said second cane pipe is complementary, and this pipe box can be assembled to the center-pole bottom through injection molding way, can be fixedly connected the second battle pipe through pipe box.

Further; The top of said center-pole also offers a screwed hole, and is equipped with corresponding screw, the upper limit that the paired said expansion part of said screw shaped moves up; Make when dismounting the utility model alpin-stock; Grommet can not be shifted or come off, and when regulating alpin-stock especially in the open air, prevents that grommet from coming off or drop and cause alpin-stock to scrap; And since grommet be arranged on the top of telescopic positioning device and move up and down; Again because the internal diameter of grommet is littler than expansion part; Therefore adopt general screw can realize upper limit, and do not need to make specially stopping means such as spacing ring, reduced production cost grommet.

Compared with prior art; The alpin-stock telescopic positioning device that the utility model provides is owing to adopt expansion part and the grommet of the similar setscrew principle core parts as telescopic positioning device; Can make telescopic positioning device conversion between swelling state and contraction state, the good fixing effect between the alpin-stock cane pipe through rotation alpin-stock cane pipe; And owing to fit through taper seat between expansion part and the grommet, expansion character is stronger, only needs small rotation power just can make said expansion part be expanded to enough volumes, reaches the fixing required frictional force of each walking stick cane pipe; In addition, this telescopic positioning device is simple in structure, is particularly suitable in the alpin-stock that has other buffering and shock preventing devices, connecting the adjacent cane pipe that buffering and shock-proof effect need be provided, and is simple and compact for structure, more economy and durability.

Description of drawings

Fig. 1 show the alpin-stock that provides among the utility model embodiment telescopic positioning device be in the Facad structure sketch map under the expansion state.

Fig. 2 shows the structural representation from the side-lower observation of the telescopic positioning device of Fig. 1.

Fig. 3 shows the exploded perspective view of Fig. 1.

Fig. 4 shows the exploded perspective view of Fig. 2.

Fig. 5 shows the cutaway view after telescopic positioning device and the alpin-stock cane pipe assembling among the utility model embodiment.

Fig. 6 shows the partial enlarged drawing of Fig. 5.

Fig. 7 shows the structural representation under the contraction state that is in of the alpin-stock telescopic positioning device that provides among the utility model embodiment.

Fig. 8 shows the telescopic positioning device of Fig. 7 and the partial enlarged drawing cutaway view after the assembling of alpin-stock cane pipe

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing:

Embodiment: extremely shown in Figure 8 like Fig. 1; The two ends of the alpin-stock telescopic positioning device in the present embodiment are connected with the first cane pipe 4 and the second cane pipe 5 of alpin-stock respectively; The first cane pipe 4 and the second cane pipe 5 are the adjacent and end to end cane pipes in the alpin-stock, can overlap each other between the first cane pipe 4 and the second cane pipe 5 and contract.The top of telescopic positioning device can lock or releases by the relative first cane pipe 4, and the bottom of telescopic positioning device is fixedly connected with the second cane pipe 5.The applied alpin-stock of telescopic positioning device can comprise a plurality of adjacent cane pipe groups that connect through telescopic positioning device, thereby makes that the length adjustment scope of alpin-stock is bigger, and alpin-stock can be provided with the buffering and shock preventing element separately.Particularly, telescopic positioning device comprises center-pole 1, expansion part 3, grommet 2 and pipe box 6, and wherein expansion part 3 and grommet 2 are set on the center-pole 1, and pipe box 6 is located at and is fixedly installed on center-pole 1 bottom.

The top of center-pole 1 offers a screwed hole 13, and is equipped with corresponding screw 14, and screw 14 forms the upper limit that expansion part 3 is moved up.The top of center-pole 1 is provided with external screw thread 11.Center-pole 1 bottom is provided with groove 12.Plastic pipe sleeve 6 is arranged on the bottom 6 of center-pole 1, and the internal diameter of the external diameter of plastic pipe sleeve 6 and the second cane pipe 5 is complementary, and telescopic positioning device can be fixedly connected the second cane pipe 5 through plastic pipe sleeve 6.

Expansion part 3 is being set in around the mode that center-pole rotates on the center-pole; Its upper side is separated into four expanding plates 32 through axial cut-outs 31; One of them axial cut-outs 311 is axially to run through whole expansion part 3 sides from top to bottom, and promptly this axial cut-outs 311 extends to expansion part 3 bottoms from expansion part 3 tops.Top is separated from each other because the bottom of expanding plate 32 links into an integrated entity, thereby guarantees the mechanical strength and the expansion character of expansion part simultaneously.The lower inside of expansion part 3 is provided with inwardly protruded bulge loop 33, bulge loop 33 snaps onto in the groove 12 on the center-pole 1, like this lower end of expansion part 3 with regard to axial limiting on center-pole 1.

Grommet 2 is equally being set on the center-pole 1 around the mode of center-pole 1 rotation, spacing on center-pole 1 top screw 14 times and be positioned at expansion part, its outer surface is a up big and down small male cone (strobilus masculinus) 21.Grommet 2 inside are provided with the internal thread suitable with the external screw thread of center-pole 1 11, just can move up and down by relative center-pole 1 during grommet 2 rotations like this.Grommet 2 outer surfaces are provided with two projections 22; The shape of this projection 22 and position and axial cut-outs 31 are complementary, thereby projection 22 can be snapped in the axial cut-outs 31, guarantee that grommet 2 can rotate with center-pole 1 synchronously; Promptly when expansion part 3 rotations; Grommet 2 can rotate thereupon, especially when grommet 2 when outwards not pushing expansion part 3, expansion part 3 can relatively easily drive grommet 2 and rotate synchronously.

Along with grommet 2 moves down because of rotating relative to center-pole 1, expanding plate 32 is progressively expanded until the inwall of being close to the first cane pipe 4 under male cone (strobilus masculinus) 21 effects of grommet 2.The stroke of the external screw thread 11 of center-pole 1 should be enough to make that expansion part 3 can vertically move certain distance; This distance makes expansion part 3 under contraction state and expansion state, to change; Particularly, under contraction state, expansion part 3 and the first battle pipe, 4 inwalls are not close to; And under expansion state, expansion part 3 and the first battle pipe, 4 inwalls are close to.

It will be appreciated by those skilled in the art that above-mentioned expansion part 3 and grommet 2 combinations have promptly realized the effect of expansion element in the prior art.When grommet 2 moved down, grommet 2 can push expansion part 3 internally, and expanding plate 32 expansions are close to the first cane pipe, 3 inwalls until expansion part 3, and at this moment, the first cane pipe 4 can be fixed by the relative second cane pipe 5; When grommet 2 moves up, be separated between grommet 2 and the expansion part 3, expanding plate 32 shrinks no longer is close to the first cane pipe, 3 inwalls until expansion part 3, and at this moment, the first cane pipe 4 can stretch up and down by the relative second cane pipe 5.

When the user needs the relative second cane pipe 4 to stretch the first cane pipe 4, only need the turn first cane pipe 4, drive expansion part 3 and carry out spinning, make grommet 2 vertically move up; Along with grommet 2 moves up; Grommet 2 pushes the expanding plate 32 of expansion part 3 no longer internally; The reduced diameter of expansion part 3 makes that the frictional force between the inwall of the expansion part 3 and the first cane pipe 4 diminishes, and this moment, the first cane pipe 4 was can the comparatively freely relative second cane pipe 4 flexible up and down.

After above-mentioned telescopic adjustment is accomplished; Only need the reverse rotation first cane pipe 4, drive expansion part 3 and carry out reverse spinning (at this moment, although expansion part 3 no longer is close to the inwall of the first cane pipe 4; Because still having enough frictional force to make between the inwall of expansion part 3 and the first cane pipe 4 to win cane pipe 4 can drive expansion part 3 rotates); And make grommet 2 vertically move down, because grommet 2 pushes the expanding plate 32 of expansion part 3 internally, it is big that the diameter of expansion part 3 becomes gradually; Make the frictional force between the inwall of the expansion part 3 and the first cane pipe 4 become big; Interfix with telescopic positioning device until the first cane pipe 4, this moment, the first cane pipe 4 no longer can stretch with respect to the second cane pipe 4, thereby made alpin-stock produce fixed support effect preferably.

Claims

1. alpin-stock telescopic positioning device; Its with alpin-stock in two adjacent cane pipes that contract that join end to end and can overlap each other in the first cane pipe (4) and the second cane pipe (5) be connected; The top of said telescopic positioning device can lock or release by the relative first cane pipe (4); The bottom of said telescopic positioning device is fixedly connected with the second cane pipe (5); It is characterized in that: said telescopic positioning device comprises the center-pole (1) that has external screw thread (11) and being set in grommet (2) and expansion part (3) outside the center-pole (1) around the mode of said center-pole (1) rotation; Said grommet (2) has up big and down small male cone (strobilus masculinus) (21); Said grommet (2) inside is provided with the suitable internal thread of external screw thread (11) with said center-pole (1), the upper side of said expansion part (3) has axial cut-outs (31) and is separated at least two expanding plates (32), and the lower end of said expansion part (3) is said relatively center-pole (a 1) axial limiting; When said grommet (2) moved down because of rotating relative to center-pole (1), said expanding plate (32) was progressively expanded until being close to the residence under male cone (strobilus masculinus) (21) effect of said grommet (2) and is stated the inwall of the first cane pipe (4).

2. alpin-stock telescopic positioning device according to claim 1 is characterized in that: the projection (22) that said grommet (2) outer surface is provided with the no more than said axial cut-outs of quantity (31) and is complementary with corresponding said axial cut-outs (31).

3. alpin-stock telescopic positioning device according to claim 1 and 2 is characterized in that: one of them axial cut-outs (311) that said expansion part (3) has is axially to run through whole said expansion part (3) side from top to bottom.

4. alpin-stock telescopic positioning device according to claim 1 and 2 is characterized in that: the lower inside of said expansion part (3) is provided with inwardly protruded bulge loop (33), and said center-pole (1) is provided with the groove (12) that is complementary with said bulge loop (33).

5. alpin-stock telescopic positioning device according to claim 1 and 2 is characterized in that: the lower end of said center-pole (1) also is provided with the pipe box (6) that the internal diameter of an external diameter and the said second cane pipe (5) is complementary.

6. alpin-stock telescopic positioning device according to claim 1 and 2; It is characterized in that: the top of said center-pole (1) offers a screwed hole (13); And being equipped with corresponding screw (14), said screw (14) forms the upper limit that said expansion part (3) is moved up.