WO2019066270A1

WO2019066270A1 - Pipe length adjusting device and stick structure having same

Info

Publication number: WO2019066270A1
Application number: PCT/KR2018/009937
Authority: WO
Inventors: 김천기
Original assignee: 주식회사 아이엔지레져
Priority date: 2017-09-29
Filing date: 2018-08-29
Publication date: 2019-04-04

Abstract

The present invention relates to a pipe length adjusting device and a stick structure having the same and, more specifically, to: a pipe length adjusting device for easily fixing or releasing the position of an inner pipe with respect to an outer pipe; and a stick structure, having the pipe length adjusting device, for enabling the release of the fixing of a pole pipe to be prevented, thereby increasing convenience of use. To this end, the pipe length adjusting device comprises: a first member having an inclined surface of a set angle; a second member capable of sliding along the inclined surface; a retainer part having a form of extending and protruding from the second member toward the inclined surface; a brake rolling between the inclined surface and the second member; and a knob unit for transmitting power, and has the stick structure including an upper pole pipe portion of which insertion or withdrawal movement is restricted in the longitudinal direction by the pipe length adjusting device.

Description

Pipe length adjuster and stick structure with same

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe length adjusting device and a stick structure having the pipe length adjusting device and more particularly to a pipe length adjusting device for easily fixing or releasing a position of an inner pipe with respect to an outer pipe, The present invention relates to a stick structure provided with a pipe length adjusting device which can prevent a phenomenon in which the pipe is loosened.

In general, among products such as a mountain climbing stick, a fishing rod, and a hanger, a relatively small pie (inner pipe) is inserted or pulled in a relatively large pipe (outer pipe) among two or more pipes of different sizes, There are products that can be adjusted.

The above-mentioned products include a pipe length adjusting device having a locking function for fixing or unlocking the other coupling position based on any one of the pipes according to a user's selection.

The pipe length adjusting device used in this way is generally provided at one end of the outer pipe to press and fix the outer surface of the inner pipe to be inserted or drawn through one end with a physical force or to release the pressure.

At this time, the pipe length adjusting device can secure the fixing force so as to stably maintain the engagement position of the inner pipe from the outer pipe in correspondence with the external force in the natural state, and conversely, when the length is to be changed, .

Among conventional pipe length adjusting devices, there is Korean Patent Registration No. 10-1652748 (hereinafter referred to as "Prior Art 1").

In the pipe control apparatus of the prior art 1, when the ring having the inner pipe interposed therebetween rotates with respect to the inner center of the inner pipe, the two sharp inner edges of the ring are inclined to the outer surface of the inner pipe, And in the opposite direction, the inner edge portion is rotated in the opposite direction from the inner pipe so as to be released.

However, Prior Art 1 has a problem of damaging the side surface of the inner pipe by continuous use.

In the prior art 1, when a force of at least a degree is applied to the outer pipe in the direction in which the inner pipe is inserted, the pressing force is further increased to form a scratch in the longitudinal direction on the side surface of the inner pipe. There is a problem to damage.

In addition, in the prior art 1, the operating handle unnecessarily protrudes from a portion of the circumference of the pipe, unlike other arrangements, for easily adjusting the ring position of the pipe regulating opening, There was a problem.

On the other hand, in general, the stick is used as an auxiliary means to rely on the user's body, such as for climbing, a sports game, or a walking aid for a patient.

In particular, mountain climbing refers to the act of finding a joy in training the mind and body by climbing the mountain, and now it is used as a leisure or sport, or as a challenge to the unknown world, and climbs a dangerous mountain.

In this way, when climbing or climbing a mountain, it is necessary to support the load of the body or maintain the balance of the body when the mountain does not have a uniform topography. Recently, mountain sticks have become essential items for mountaineers, And a variety of mountain climbing sticks are being released.

These climbing sticks save much of the user's physical energy and speed up walking speed by sharing much of the walking work, which depends only on the two legs, rather than just a cane.

These sticks are divided into a folding type stick and an insertion type stick according to the connection type.

The insertion stick is configured to extend and reduce the pipe in the longitudinal direction by using a telescopic type such as a telescope or an antenna, and the folding stick can be formed by connecting a plurality of pole replacement pipes by using wires or ropes And then folded and folded.

Normally, when the entire length is the same length and the supporting force is the same size of the stick, the folding stick is not used to insert the pipe into the preceding pipe when folded, but to fold it apart. It is possible to minimize the length when it is not used.

In other words, in order to reduce the length of the insertion stick to the same length as the folding stick when not in use, a large number of pipes constituting the pole are required. In this case, the diameter of the pipe for the lowest pole is very thin, There is a concern that it will not be possible.

Nowadays, as the various climbing tools become more and more popular, the development of foldable sticks that are easy to use and easy to store is mainly made.

Such a conventional technique of folding among sticks is disclosed in Korean Patent Laid-Open Publication No. 10-2014-0073484 (hereinafter referred to as "Prior Art 2") and Korean Patent Laid-Open Publication No. 10-2012-0069287 3 ').

Normally, the folding stick has a shape in which the pole replacement pipe is bound by an inelastic string (wire or the like) and a shape in which the string is bound by an elastic string such as a rubber string.

However, in the form of being bound by the elastic string, the elastic force is weakened or loosened depending on the use, and accordingly, the pipe may be detached, resulting in a safety accident during use.

As a result, methods using inelastic ropes are widely used.

The foldable stick having the inelastic string is not constituted by folding the entire pipe constituting the pole, and the upper side pole replacement pipe is constructed by the insertion type so that the stable length of the user and the tension on the wire can be maintained.

Referring to FIG. 20, an example of such a conventional folding stick will be described below.

As shown in the drawing, the conventional foldable stick 100 'is composed of the handle 100'a and the pole 100'b.

A first pipe SP1 having a certain diameter is configured to provide a grip at the bottom of the handle 100'a to support and hold the weight of the user.

Next, the pole 100'b is formed by using a plurality of pipes SP2, SP3, SP4 and SP5 in the lower longitudinal direction of the first pipe SP1.

At this time, the first pipe (SP1) to the third pipe (SP3), which are the upper side pole replacement pipes, are of insertion type, and the fourth pipe (SP4) and the fifth pipe (SP5) (W).

The first pipe SP1 has a pipe length adjusting device 120 having a locking function to limit the insertion or withdrawal of the second pipe SP2 having a small diameter connected to the bottom.

The pipe length adjuster 120 includes a pressing portion 123 and a pressing hinge shaft 122 and a lever 121 that surround the pipe with a flip-type pipe length adjusting device of a clamp-like shape.

The lever 121 connected to the pressure hinge shaft 122 is hinged and released to release the pressure when opened so that the second pipe SP2 can be inserted or withdrawn and the lever 121 connected to the pressure hinge shaft 122 When the hinge is turned and rotated, the second pipe SP2 is pressed to restrict insertion or withdrawal of the second pipe SP2.

And a third pipe SP3 for inserting or withdrawing the second pipe SP2 into the second pipe SP2.

The third pipe SP3 is prevented from being inserted again into the second pipe SP2 due to the force applied in the longitudinal direction by the protruding stopper 130 formed on the upper side after the withdrawal from the second pipe SP2 is completed do.

The protruding stopper 130 may be replaced with or used with the pipe length adjuster 120 described above.

The second pipe SP2 is an adjustment pole section for adjusting a use length desired by the user who uses the stick 100 'and the third pipe SP3 is connected to the wire of the following fourth and fifth pipes SP4 and SP5. It is a pole section for fixing or releasing tension.

The fourth pipe SP4 and the fifth pipe SP5 are connected to the wire W fixed from the handle 100 'a or one side of the first and second pipes, and are folded according to the user's selection.

The fourth pipe (SP4) and the fifth pipe (SP5) may be pipes having the same diameter. Accordingly, the folding stick may be connected to a fourth pipe or a fifth pipe You can minimize the length of your city or extend the length of your use.

However, such a conventional folding stick 100 'has a problem that the pipe length adjusting device 120 connecting the first pipe SP1 and the second pipe SP2 fixes or releases the flip-type lever in such a manner that the flip- There was an inconvenience to use because it had to apply a separate external force.

In addition, in order to insert the third pipe SP3 into the second pipe SP2 again, the protruding stopper 130 is pushed to the inside of the pipe, and then the pipe is inserted.

In other words, the pipe length adjusting device 120 and the stopper 130, which restrict the insertion and withdrawal of the first pipe to the third pipe, are required to be provided, respectively. This increases the number of parts and inconvenience of manufacture. A large amount of force is applied to release the stopper 120 and the stopper 130, thereby increasing the inconvenience of the user.

In addition, since the combination of the components constituting the pipe length adjusting device 120 is bulky and protrudes to the outside of the pipe, there is a problem that the overall thickness of the stick becomes thick at a part, which is unsuitable for the mountain climbing stick. There is a disadvantage in that the strip 112 of the strap or belt provided on the pipe length adjusting device 120 is caught by the pipe length adjusting device 120.

In other words, the conventional folding stick 100 'has inconvenience to open the flip-type pipe length adjusting device 20 for adjusting the length, to adjust the length, and then to close the pipe length adjusting device 120 again.

Further, in order to mount the pressing hinge shaft 122 and the lever 121 constituting the pipe length adjusting device 120, an additional process is required to perform hole machining on the pipe during manufacturing.

In addition, the frequent use of the flip-type pipe length adjuster 120 frequently loosens to weaken the locking function, which requires adjustment to increase the pressing force.

When the pin connecting structure between the hinge shaft 122 and the lever 121 is weakened, the locking function is lost, and the life of the pipe length adjusting device 120 is shortened compared to the life of the stick, .

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a pneumatic tire which can stably and strongly fix a mutual position corresponding to a physical force acting in a longitudinal direction between an outer pipe and an inner pipe, Which can easily release the fixing state when necessary, and at the same time to reduce the damage between the pipes.

It is another object of the present invention to provide a pipe length adjusting device that minimizes a range of protrusions of the components constituting the apparatus from outside the pipes and prevents the user from being disturbed by other articles or objects .

It is another object of the present invention to provide a stick structure having a pipe length adjusting device capable of preventing a phenomenon in which a plurality of pole replacement pipes are unfastened.

The outer pipe and the inner pipe are braked by a simple operation of pushing the pipe length adjusting device, and a stick having a pipe length adjusting device which is easy to fix and release for adjusting the length by a single operation, Structure of the present invention.

In order to achieve the above object, a pipe length adjusting device according to the present invention is a pipe length adjusting device which is supported by an outer pipe and can be fixed or slidable in the forward and backward directions, and is set to the front and rear directions of the inner surface facing the inner pipe A first member forming an inclined surface of an angle; A second member that is spaced apart from the inclined surfaces and is fixed or slidable in the forward and backward directions; A retainer portion having a shape protruding from the second member in an inclined plane direction; A brake rotatably supported by the retainer portion and being capable of contacting the exposed outer side with the inclined surface and rolling along the inner pipe in contact with the exposed inner side; And a knob unit which is connected to the first member and / or the second member and transmits power so that the first member and the second member approach each other in the forward and backward directions or spread apart, and the brake comprises a first member and a second member When the rolling member rolls in the direction of narrowing between the inclined surface and the inner pipe in the state where the member is in contact with the outer surface of the inner pipe at the same time by the approaching member, pressure is applied to the outer surface of the inclined surface and the inner pipe in a wedge- So that the pressure is released when the valve is opened.

At this time, the retainer portion forms a groove or a hole-like seating portion for supporting at least a part of the side periphery between the inside and the outside of the brake.

On the other hand, as one of the embodiments, the inclined surfaces are composed of a first inclined surface and a second inclined surface which are spaced apart in the forward and backward directions of the inner pipe from each other with respect to the center between the first inclined surface and the second inclined surface, And the knob unit is connected to the first member or the second member to transmit a force according to a user's operation to the first member or the second member.

In one of the embodiments, the inclined surface is composed of a first inclined surface and a second inclined surface, the directions in which the space is widened with respect to the inner pipe with respect to the center between the intervals in the forward and backward directions, ,

The second member is composed of two circular plate members that surround both sides of the circumference of the inner pipe between the first inclined surface and the second inclined surface and are slidable along the circumferential direction, A first body and a second body divided by a resilient member to receive elastic force such that the other ends in the circumferential direction are brought close to each other or opened,

The first inclined surface and the second inclined surface are tilted in the left or right direction with respect to the forward and backward directions. The inclination of the first inclined surface and the second inclined surface is symmetrical on both sides corresponding to the first body and the second body, A guide groove for guiding movement is formed,

The first body and the second body are each provided with a retainer portion on both sides in the width direction which is the front and rear direction, and the retainer portion is formed with a hole or a groove-shaped seating portion which partially intersects the guide groove with respect to the inner and outer sides under,

The knob unit is connected to the first body and the second body so that the gap between the first body and the second body is narrowed or narrowed according to a user's operation.

The first body and the second body are formed by forming a wedge groove end portion in which the gap between the opposite ends of the first body portion and the second body portion is inclined at a narrow-

The knob unit is provided with wedge protrusions which closely correspond to both sides of the wedge groove end. The wedge protrusion is pressed and inserted in a narrow direction between the wedge groove ends so that the first body and the other end of the second body And the other ends of the first body and the second body, which are subjected to the elastic action of the elastic member when moving in the opposite direction,

As the first body and the second body are slid in the circumferential direction of the inner pipe by the elastic force of the elastic member, the guide groove and the seat portion receive the brake between the inner pipe and the first inclined surface or the second inclined surface Thereby guiding the user to move in a narrow direction of the space.

On the other hand, the retainer portion is further provided with a buffer slit in the widthwise side portion of the seat portion, the slit being cut in a direction parallel to the seat portion.

In one of the embodiments, the inclined surface is composed of a first inclined surface and a second inclined surface which are spaced apart from each other in the forward and backward directions with respect to the inner pipe, the directions of narrowing toward the inner pipe are mutually opposite;

The second member is composed of a first body and a second body each having a retainer portion formed in a direction opposite to the first inclined surface and the second inclined surface, wherein a support member is provided at the front end and the rear end of the first member,

The first body and the second body are subjected to an elastic action such that the brake placed on the seating portion of the retainer portion by the elastic member supported by the support member comes into contact with the corresponding first inclined surface and the second inclined surface,

The knob unit includes a push slider positioned between the first inclined surface and the second inclined surface and pushing the first body or the second body in a direction opposite to the elastic force of the elastic member.

Further, the push slider has a ring shape surrounding the periphery of the inner pipe, a through hole corresponding to the design has already been formed in the peripheral portion, a support bar protruding in the front and rear direction of the periphery is formed,

The first body and the second body are further formed with support grooves so that both ends of the support bar are respectively fitted,

And the knob unit is formed with a knob projection which is inserted into the through hole and connected to the knob unit.

On the other hand, if necessary, the knob unit may include a body, a push bar extending in a length direction forward of the body, and a pushing ring portion extending to the rear of the body and surrounding the circumference of the outer pipe,

The pushbars located at the rear of the pushbutton are pushed forward to adjust the length of the inner pushbutton in order when the length of the inner pipe is drawn into the outer pipe.

According to another aspect of the present invention, there is provided a stick structure comprising a plurality of pole replacement pipes, the stick structure comprising: a first pipe having a handle at an upper portion thereof; A second pipe as an inner pipe whose insertion or pull-out movement in the longitudinal direction is restricted by the pipe length adjusting device, and a second pipe as an outer pipe, Wherein the first pipe length adjusting device and the second pipe length adjusting device are pipe length adjusting devices according to the present invention.

On the other hand, the stick structure is constituted by at least two pole replacement pipes having the same diameter as the third pipe, and can be folded in the longitudinal direction in a fitting manner, and is fixed to one side of the inside of the pipe section for the upper pole replacement, And a pipe portion for a lower pole restrained by a wire fixed across the lower end.

The knob unit constituting the first pipe length adjusting device and the second pipe length adjusting device includes a push bar extending in a length direction forward of the body and a pushing ring portion extending to the rear of the body and surrounding the circumference of the outer pipe do.

Accordingly, when adjusting the length of the inner pipe to be drawn into the outer pipe, the push bar of the first pipe length adjusting device located at the rear side pushes the pushing ring portion of the second pipe length adjusting device located at the front to adjust the length sequentially.

On the other hand, if necessary, the upper pole replacement pipe portion includes a wire connection portion fixedly connected to an upper end portion of the wire at an inner side thereof.

At this time, the wire connection portion includes a guide member inserted and positioned in the rear side end portion of the second pipe inserted in the first pipe in a block-like shape and guiding the wire passing through the center so as not to come off, Shaped fixing member movable in a state in which the upper end of the fixing member is fixed, and an elastic member positioned between the guide member and the fixing member.

The stick structure further includes a shock absorber for relieving an impact on one side of the pipe connected to the beveled tip provided at the bottom.

As described above, according to the pipe length adjusting device of the present invention, the user can easily fix the brake by releasing the fixing of the brake with a small force and a simple operation.

In addition, since the combination of the pipe length adjusting device is formed in the thickness range of the first member that surrounds the brake contacting the outer surface of the inner pipe, the degree of protrusion to the outside of the outer pipe is limited and slim, It has an effect of reducing inconveniences such as an operation of fixing a string or a belt.

In addition, since the brake is supported by the first inclined surface and the outer surface of the inner pipe, the brake releases the pressure or the pressure, thereby reducing damage to the outer surface of the inner pipe and extending service life.

In addition, the stick structure having the pipe length adjusting device according to the present invention can prevent the phenomenon that the plurality of pole replacement pipes are unfastened, and the pole is constructed of a pipe having the minimum thickness to support the force, The unit length of the pipe can be reduced.

In addition, the stick structure has the effect of facilitating ease of use by facilitating the braking of the outer pipe and the inner pipe by simple operation of pushing the pipe length adjusting device with a small force and fixing and releasing for insertion or withdrawal.

In addition, the stick structure is stable and strong against the mutual position in correspondence with the physical force acting in the longitudinal direction between the outer pipe and the inner pipe, in accordance with the brake structure of the pipe length adjusting device located between the slope and the outer surface of the pipe. It is possible to fix and release easily, and to reduce the damage between the pipes.

In addition, the structure of the stick and the thickness of the entire stick itself can be manufactured in accordance with the user's convenience.

In addition, unlike a conventional folding stick, the stick structure has an effect of facilitating fabrication by eliminating an additional step of performing hole processing on the pipe itself.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram for explaining a configuration of a pipe length adjusting apparatus according to the present invention and an operating relationship therebetween.

Figs. 2A and 2B are schematic diagrams for explaining an operation relationship between an outer surface of the inner pipe and an inclined surface of the inner pipe shown in Fig.

Figs. 3A to 3C are cross-sectional views schematically showing a modified example of the knob unit and an operating relationship therebetween.

FIGS. 4 to 7B are schematic views for explaining the structure of another embodiment of the pipe length adjusting device according to the present invention and the operating relationship of these structures.

FIGS. 8 to 10 are schematic views for explaining the configuration of another embodiment of the pipe length adjusting device according to the present invention and the operating relationship of these configurations.

11 to 15 are schematic views for explaining the configuration of another embodiment of the pipe length adjusting device according to the present invention and the operation relationship of these configurations.

16 is a perspective view showing a stick structure having a pipe length adjusting device according to the present invention.

17 is a view showing a folded state according to the stick structure according to the present invention.

18 (a) and 18 (b) are schematic views for explaining still another embodiment of the pipe length adjusting device applied to the stick structure according to the present invention and the operation relationship therefor.

19 (a) and 19 (b) are partial sectional enlarged views for explaining 'A' and 'B' portions of the stick structure according to FIG. 16, respectively.

20 is a schematic view showing a stick structure according to the prior art.

The present invention relates to an air conditioner which is supported by an outer pipe (P1) and can be fixed or slidable with respect to the front and rear directions, and has an angle (? A first member 10 which forms an inclined surface S of the first member 10; A second member (20) spaced from the slopes (S) and capable of being fixed or slidable in the forward and backward directions; A retainer portion (30) extending from the second member (20) in the direction of the inclined surface (S); And the inner pipe (P2), which is exposed to the inner side, is rotatably supported by the retainer portion (30), and the exposed outer side can contact the inclined surface (S) A brake 40 which rolls in accordance with the progress of the operation; A knob for connecting the first member 10 and / or the second member 20 to transmit the power so that the first member 10 and the second member 20 come close to each other in the forward and backward directions, Unit 50,

The brake 40 is configured such that the first member 10 and the second member 20 are brought into close contact with the outer surface of the inner pipe P2 while simultaneously contacting the inclined surface S with the outer surface of the inner pipe P2. A pressure is applied to the outer surface of the inclined surface S and the inner pipe P2 in a wedge shape when rolling in a narrowing direction formed by the pipe P2 so that the pressure is relieved when the pressure is applied in the opposite direction The present invention provides a pipe length adjusting device.

The present invention provides a stick structure comprising a plurality of pole replacement pipes, comprising a first pipe (SP1) having a handle (111) at an upper portion thereof, a first pipe (SP1) A second pipe SP2 serving as an inner pipe P2 whose insertion or withdrawal movement in the longitudinal direction is limited by the first pipe length adjusting device 1a as the first pipe length P1 and the second pipe SP2 as an inner pipe P2, P1), and a third pipe (SP3) as an inner pipe (P2) whose insertion or withdrawal movement in the longitudinal direction is restricted by the second pipe length adjusting device (1b) The first pipe length adjusting device (1a) and the second pipe length adjusting device (1b) are pipe length adjusting devices having the best mode described above.

In the description of the present invention, the inner expression refers to a portion in the center direction or direction of the pipe from each component portion in the normal direction to the pipe periphery, and the expression on the outer side refers to the direction opposite to the inner side or in the direction Will be described below.

It should be noted that the expression in the front indicates a portion in the direction or direction in which the inner pipe is pulled out with respect to the outer pipe and the expression in the rear indicates the portion opposite to or in the direction opposite to the front And the length direction of the pipe will be described in parallel with another expression.

In addition, the upper portion or the upper portion refers to a portion in the direction or direction in which the handle is provided when the pointed tip portion of the stick comes into contact with the floor and stands upright in the vertical direction, and the lower or lower portion refers to a portion Will be described below.

In the description of the present invention, the expression on one side refers to a part in one direction or direction with respect to the center in the longitudinal direction of each component, and the expression on the other side refers to a direction opposite to or in the opposite direction Will be described below.

In describing the present invention, a detailed description of related air functions or configurations will be omitted so as not to obscure the gist of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a pipe length adjusting device and a stick structure having the same according to the present invention will be described in detail with reference to the accompanying drawings.

First, a pipe length adjusting device 1 according to the present invention will be described with reference to FIGS. 1 to 15. FIG.

In the pipe length adjusting device 1 according to the present invention, when two or more pipes of different sizes, such as a stick for a mountaineering, a fishing rod, a hanger, etc. are coupled to each other in mutual fitting relationship, To be applied to articles.

In other words, the pipe length adjusting device 1 according to the present invention can be configured such that the relatively small inner pipe P2 can be inserted into or pulled out from the outer pipe P1, or the inner pipe P2 can be inserted into the outer pipe P1, In order to fix the position of the light emitting diode.

As shown in Fig. 1, the pipe length adjusting device 1 for this purpose is supported by the outer pipe P1 and is provided at a portion projecting forward from the front end of the outer pipe P1, And a first member (10) having a shape portion that surrounds part or all of the outer periphery of the corresponding inner pipe (P2) through a portion formed through the side of the pipe (P1).

The first member 10 described above has a structure in which a part of the length of the pipes P1 and P2 in the inner surface opposite to the outer surface of the inner pipe P2 is connected to the outer surface of the inner pipe P2 and the longitudinal direction of the pipes P1 and P2 The inclined surface S of the angle?

The inclined surface S may be formed over the entire inner surface of the first member 10 and may be formed at each of the portions divided into one or more portions around the inner surface of the first member 10. [

The interval between the inclined surface S and the outer surface of the inner pipe P2 becomes narrower toward one side of the longitudinal direction of the pipes P1 and P2 and conversely, the interval becomes larger toward the other side.

The angle? Between the inner pipe 2 and the inclined surface S is based on an acute angle.

Specifically, the angle? Formed by the inner pipe P2 and the slope S is set to be less than 30 degrees, more preferably less than 15 degrees, as referred to in FIGS. 1 to 2B.

This inclined surface S is formed by the brake 40 having an already set thickness and contacting the outer surface of the inner pipe P2 and the inclined surface S at the same time, So that it can move in the same direction as the pipe P2.

That is, the angle? Formed by the inclined plane S described above is set such that the brake 40, which will be described later, is disposed between the outer surface of the inner pipe P2 and the inclined surface S to the inclined surface S and the inner pipe P2 when the inner pipe P2 is moved in the direction of narrowing the distance between the inner pipe P2 and the inclined surface S Is directed at a small angle (&thetas;) so as to be able to roll (M2) in the direction of movement of the inner pipe (P2) by friction and thus friction.

That is, the brake 40 rolls (R) due to the friction between the outer surface of the inner pipe P2 contacting and the slope S when the inner pipe P2 advances in the direction of narrowing the gap (M1) .

The brake 40 thus rolled is moved M2 in the direction W in which the distance in the direction of progression M1 of the inner pipe P2 is narrowed and the distance between the outer surface of the inner pipe P2 and the inclined surface S (F1, f2) with respect to the outer surface of the inner pipe P2 and the sloped surface S, respectively, which are brought into contact with each other depending on the degree of fitting in the wedge-shaped space in the narrowed space.

The vertical forces f1 and f2 thus generated are caused by frictional forces that prevent the inner pipe P2 from moving in the direction of the abnormal movement M1 based on the position of the first member 10 having the inclined plane S .

Here, when the angle [theta] formed by the inclined plane S is larger than 15 [deg.], When the brake 40 rolls in the narrow direction W due to the progression M1 of the inner pipe P2 The frictional force including the vertical forces f1 and f2 of the slopes S and the brakes 40 in contact with the inner pipe P2 is weak and can slide on the surfaces of the slopes S and the inner pipes P2.

That is, the brake 40 not only provides the frictional force including the vertical drag f1 and f2 against the outer surface of the inner pipe P2 and the inclined surface S, but at the same time provides the frictional force including the outer surface of the inner pipe P2 and the inclined surface S (F1 ', f2' or f ", f2") of the same magnitude as the vertical drag (f1, f2).

As shown in Figs. 2A and 2B, the drag forces f1 'and f2' or f2 'and f2' are set such that the middle direction of the angle [theta] formed by the outer surface of the inner pipe P2 and the inclined surface S is (F3 'or f3 ") obtained by adding vector values in the opposite direction (-M1) to the advancing (M1) direction of the inner pipe (P2).

In other words, when the brake 40 is fitted in a wedge shape in a narrow space, the action of the constant repulsive force (f3 'or f3') by the angle [theta] formed by the outer surface of the inner pipe P2 and the inclined surface S And is influenced by the frictional force including the coefficient of friction along the surface of the contact relationship.

The repulsive force f3 'or f3' is stronger as the angle? Formed by the outer surface of the inner pipe P2 and the inclined plane S is larger.

Therefore, in order to fix the position of the inner pipe P2 with respect to the inclined plane S in correspondence with the progression M1 of the inner pipe P2, the brake 40 against the outer surface of the inner pipe P2 and the inclined plane S, (F3 'or f3' ').

In order to apply the angle? Formed by the inner pipe P2 and the inclined surface S, it is necessary to select one having a high friction coefficient between the inner pipe P2, the inclined surface S and the brake 40 have.

As an example of this, when the brake 40 to be described later is coated with urethane or rubber material which has a high coefficient of friction on its surface and is elastically deformable, the outer surface of the inner pipe P2 and the inclined surface S It can be put in a state in which it is caught in a narrow part of the body and can not easily fall out in the opposite direction.

Conversely, when the inner pipe P2 advances in the direction (-M1) in which the gap between the inner pipe P2 and the slope S extends, the brake 40 is rotated in the direction opposite to the repulsive force f3 'or f3' (-M1) of the inner pipe P2 by gradually reducing the vertical forces f1 and f2 due to the movement (-R2) of the inner pipe P2.

The shape of the deformed first member 10 'as in the case of the shape indicated by the reference numeral SM in Fig. 2B is such that when the angle?' Of the above-mentioned slope S 'is sufficiently small, In order to reduce the forward and backward sections of the vehicle.

That is, the brake 40 has a limited space that can be fitted in the narrow space formed by the outer surface of the inner pipe P2 and the inclined surface S, and therefore, the space for installing the retainer 30 It is not necessary to form the inclined plane S in an enlarged scale.

In other words, since the brake 40 is fitted in a narrow space between the outer surface of the inner pipe P2 and the inclined surface S, the thickness of the brake 40 can not be reduced to such an extent that the thickness can not be reduced by the arrow "d" It is preferable to select a material having durability.

The brake 40 is applied to a surface of the rigid material which is coated with a urethane or rubber material having a high coefficient of friction such that the thickness according to the design (the sum of both thicknesses is smaller than the arrow "d" in FIG. 2B) .

On the other hand, when the brake 40 is fitted in a narrow space between the inner pipe P2 and the inclined surface S, it is difficult to get rid of the brake 40. To release the brake 40, It is preferable to be pulled out in a direction in which the interval is widened.

The first member 10 described above is fixed in the longitudinal direction of the pipes P1 and P2 while being supported by the bracket 5 fixed to the front end of the outer pipe P1, It may be in a forward / backward slidable state.

3A, the first member 10 and the bracket 5 are integrated with each other when the first member 10 is fixed to the front end of the outer pipe P1 Lt; / RTI >

On the other hand, when the first member 10 is in the slidable state, the first member 10 can be supported and guided by the bracket 5 and can be moved back and forth.

When the sliding of the first member 10 has a portion exposed from the bracket 5 or is connected to a knob unit 50 to be described later, For example, by pressing the knob unit 50, pushing it forward, pulling it backward, or the like.

Here, the fact that the first member 10 can move means that it can move to the inner pipe P2 which is eventually subjected to the frictional action through the brake 40. [

Therefore, it is preferable that the first member 10 is fixed to the front end of the outer pipe P1 while the second member 20 to be described later slides forward and backward.

In addition, when the first member 10 is made to be slidable, the displacement of the first member 10 is controlled so as to be within a limit range according to a design described later (for example, a range in which the brake 40 does not touch or contact the slope S) Limitation is preferred.

The movement of the first member 10 is made by the elastic force of the elastic member 6 which will be described later, in which the inclined plane S is brought close to the second member 20 in a natural state without user's operation desirable.

On the other hand, the pipe length adjusting device 1 according to the present invention includes the second member 20 disposed on the inclined plane S at intervals.

The second member 20 may be fixed in the longitudinal direction of the pipes P1 and P2 or may be slidable in the forward and backward directions.

Here, as shown in Fig. 3A, the fixing of the second member 20 is based on a relationship in which the above-described first member 10 is slid by itself, and is fixed to the above-described bracket 5 Or the bracket 5, as shown in Fig.

It is preferable that the movement of the second member 20 be designed so as to be in a range close to the first member 10 corresponding to the movable state within the fixed state or limited range of the first member 10 .

It is preferable that the movement of the second member 20 is opposite to the forward and backward directions of the first member 10 in correspondence with the sliding movement of the first member 10. [

At this time, the stop positions of the first member 10 and the second member 20 due to the sliding movement in the opposite directions are close to each other, and the brake 40 placed therebetween contacts the slope S with sufficient pressure So as to be in a position to balance the forces.

And the stop position for the direction in which the first member 10 and the second member 20 are to be widened can be in a position to receive the support of the bracket 5. [

The second member 20 has a retainer portion 30 extending in the direction of the inclined plane S at a portion of the side portion in the longitudinal direction of the pipes P1 and P2 opposed to the inclined surface S .

Here, the retainer portion 30 may be formed integrally with the second member 20, or may be integrally connected to the second member 20 in a similar manner.

That is, the position of the retainer portion 30 is determined by the position of the second member 20.

The retainer portion 30 is provided so that the edge portions protruding from the second member 20 in the longitudinal direction of the pipes P1 and P2 are spaced apart from each other in a narrow space defined by the inclined surface S and the inner pipe P2, It is preferable that the protrusions are formed so as to protrude more than the positions of the protrusions 40.

This is because when the first member 10 and the second member 20 are mutually engaged in a state where the brake 40 to be described later is fitted in a narrow space between the inclined plane S and the inner pipe P2 in a wedge- 40 in the direction in which the gap between the inclined plane S and the inner pipe P2 is widened.

Accordingly, the retainer portion 30 is provided so as to surround at least a part of the side portion of the side between the brake 40 and the brake 40, When the pipe 40 is in the shape of a pipe, both ends of the pipe may be rotatably supported.

That is, the retainer portion 30 is provided with a groove or hole-shaped seating portion (not shown) having at least a part of its side portion so that the brake 40, which will be described later, can contact the outer surface of the inner pipe P2 and the inclined surface S 31 are provided.

On the other hand, the pipe length adjusting device 1 according to the present invention is provided with a brake 40 which is supported by the above-described retainer portion 30 and can be moved in a forward and backward direction and is movable.

The brake 40 may include at least one of a ball, a round bar, and a circular pipe.

In the case of a ball shape among the shapes of the brake 40 described above, the inner pipe P2 can be applied to a variety of shapes such as a circular shape or a square shape.

When the circumference of the inner pipe P2 is circular or elliptical, the retainer 30 may be formed in a groove or a hole shape so as to support the spacing of the plurality of balls 40 in the circumferential direction of the inner pipe P2. It is preferable to provide a portion for supporting the circumferential side portion.

In the case where the shape of the brake 40 described above is a round bar or a circular pipe shape, it is intended that a portion of the surface of the inner pipe P2 in the circumferential direction corresponds to a portion formed in a plane, S) are also formed in a plane.

Such a brake 40 may be of a dumbbell shape and may be moved to a space in which the gap between the inclined surface S of the first member 10 and the outer surface of the inner pipe P2 is narrowed to be sandwiched therebetween, It can be selected from those capable of providing a frictional force corresponding to the pipe P2 and the inclined plane S. [

Meanwhile, the pipe length adjusting device 1 according to the present invention is a pipe length adjusting device according to the present invention, in which the first member 10 or the second member 20 or the first member 10 and the second member 20 And a knob unit 50 for moving in the forward and backward directions.

The knob unit 50 is connected to the first member 10 or to the second member 20 or to both the first member 10 and the second member 20 Can be configured.

As a result, the knob unit 50 moves the first member 10 and the second member 20 to each other by moving at least one of the first member 10 and the second member 20 or both at the same time, Close to each other, or to spread apart.

The connection structure of the knob unit 50 with respect to the first member 10 and the second member 20 is as follows.

3A, the first member 10 described above is supported and guided by the bracket 5 in a state in which the second member 20 is fixed, and the knob unit 50 is slidably moved It may be a portion extending rearward from the first member 10 or may be integrally connected with the first member 10. [

Further, the knob unit 50 has a portion exposed to the outside of the bracket 50.

When the user pushes or pulls the knob unit 50 in the forward or backward direction through the exposed portion, the knob unit 50 transmits the force to the first member 10 in the connection relation, .

In addition, the knob unit 50 may be formed by forming a latching portion 50a having a shape having a projection, a groove, a hole, or a separate structure already mounted on a part of the design.

The bracket 5 corresponding to the knob unit 50 may have a coupling portion 5a formed in the predetermined portion according to the sliding movement of the knob unit 50 so as to have a locking action corresponding to the locking portion 50a.

The setting positions of the engaging portion 50a and the engaging portion 5a are set such that the inclined surface S of the first member 10 is set to a position corresponding to the engagement between the engaging portion 50a and the engaging portion 5a, It is preferable that the brake 40 is in a state of pressing with sufficient force.

3A, the operation of the knob unit 50 according to this embodiment is the same as the operation of the knob unit 50 in the state in which the engaging portion 50a is engaged with the engaging portion 5a, Thereby releasing the engagement of the inner pipe P2 with respect to the outer pipe P1.

When the inner pipe P2 is positioned with respect to the outer pipe P1 from this position, the user can move the engaging portion 50a of the knob unit 50 backward to a position where the engaging portion 5a is engaged with the engaging portion 5a So that the inner pipe P2 is fixed at the determined position with respect to the outer pipe P1.

The configuration of the knob unit 50 including such a bracket 5 and the operation thereof is illustrated by the fact that the sliding movement of the first member 10 including the knob unit 50 can be performed by a user's operation.

In addition to the above-described configuration, the knob unit 50 and the bracket 5 are provided with an elastic member 6 (elastic member) for resiliently engaging the engaging portion 50a with the engaging portion 5a in the absence of operation by the user ) May be further provided.

3A, reference numerals 7 'and 20a' are elastic pieces 7 for compensating for the tolerance of the engaging portion 50a and the engaging portion 5a, The bent portion 20a can be elastically changed.

Another type of the knob unit 50 described above is such that the second member 20 described above is mounted on the bracket 5 with reference to a state in which the first member 10 is fixed, The second member 20 may be a portion extending rearward from the second member 20 or being integrally connected to each other so as to be capable of being slidably moved by being supported and guided.

When the user pushes or pulls the knob unit 50 forward or backward through the exposed portion, the knob unit 50 transmits the force to the connected second member 20 to move it.

In addition, the knob unit 50 is formed with a latching portion 50a having a protrusion, a groove, a hole, and a separate structure on a part of the design, and the bracket 5 is provided with a knob unit 50 The engaging portion 5a is formed to have a latching action corresponding to the engaging portion 50a at a predetermined position according to the sliding movement of the engaging portion 50a.

When the engaging portion 50a and the engaging portion 5a are engaged with each other, the set position of the engaging portion 50a and the engaging portion 5a is set such that the engaging portion 50a and the engaging portion 5a are engaged with each other on the inclined surface S of the first member 10 So that the brake 40 is in a state of being pressed by a sufficient force.

Referring to FIG. 3B, in a state in which the knob unit 50 is engaged with the engaging part 50a and the engaging part 5a, the user presses the engaging part 50a, Releasing the engagement of the inner pipe P2 with respect to the outer pipe P1 while releasing the engagement state.

When the position of the inner pipe P2 relative to the outer pipe P1 is determined, the user pushes the engaging portion 50a of the knob unit 50 forward so as to be engaged with the engaging portion 5a, Thereby fixing the positioned inner pipe P2 to the outer pipe P1.

The configuration of the knob unit 50 including such a bracket 5 and the operation according to this example is illustrated by the fact that the sliding movement of the second member 20 including the knob unit 50 can be performed by a user's operation.

However, in addition to the above-described configuration, the knob unit 50 and the bracket 5 are provided with elastic pieces 7b (elastic members) for elastically coupling the engaging portions 50a and engaging portions 5a ) May be further provided.

3C, the first member 10 and the second member 20 are supported and guided by the bracket 5 so that the sliding movement of the first member 10 and the second member 20 The first member 10 and the second member 20 are slid in mutually opposite directions and interposed therebetween in a separate structure.

As shown in FIG. 3C, a portion extending from the first member 10 and a portion extending from the second member 20 are spaced apart from each other on the inner side or the outer side or in the circumferential direction Let us arrange it side by side.

And a pinion 8 rotatably supported at the fixed position by the support of the bracket 5 is disposed between the racks of the forward and backward arrangements on the mutually facing surfaces of the extended portions .

Further, the knob unit 50 has a portion at least a part of which is exposed to the outside of the bracket 50.

The knob unit 50 includes a first member 10 and a second member 10 which are connected to each other in the opposite directions about the pinion 8 when the user pushes or pulls them in the forward and backward directions through the exposed portion, So that the two members 20 transmit their forces such that they approach each other or spread apart.

In addition, the knob unit 50 is provided with a latching portion 50a having a projection, a groove, a hole, or a separate structure mounted on a part of the knob unit 50 according to an already designed design of at least one of the extended portions of the inner / And the bracket 5 may be provided with an engaging portion 5a for engaging with the engaging portion 50a at a predetermined position according to the sliding movement of the knob unit 50. [

When the engaging portion 50a and the engaging portion 5a are engaged with each other, the inclined surface S of the first member 10 It is preferable that the brake 40 is in a state of being pressed by a sufficient force.

3C, in a state in which the engaging portion 50a and the engaging portion 5a are engaged with each other, the user presses the knob unit 50, The engaging portion 50a can be disengaged from the engaging portion 5a through an operation such as pulling or pulling.

When the position of the inner pipe P2 with respect to the outer pipe P1 is determined from this, the user can push the knob unit 50 again, push or pull the knob unit 50, So that the position of the inner pipe P2 relative to the outer pipe P1 is fixed.

The configuration as described above is a description of a configuration in which it can be fixed with respect to any one of the forward and backward directions M1 of the inner pipe P2 or can be released from its fixed state.

Hereinafter, various embodiments will be described in which the inner pipe P2 is fixed with respect to both the front and rear directions M1 and -M1, or the fixing state thereof is released.

Particularly, in the following technical constructions, the inclined surfaces S of the first member 10 are spaced apart from each other in the longitudinal direction of the inner pipe P2, and the first inclined surfaces S1, S1 ' And the second inclined surfaces S2 and S2 '.

The second member 20, the retainer 30 and the brake 40 are installed in a shape opposite to the first inclined surfaces S1 and S1 'and the second inclined surfaces S2 and S2' , The knob unit 50 can move the force of the user to the second member 20 so as to bring the brake 40 close or open corresponding to the first inclined plane S1 or S1 'or the second inclined plane S2 or S2' .

4 to 7B, the inclined surfaces S formed along the inner circumferential surface of the first member 10 are spaced apart from each other with respect to the inner pipe P2, (S1) and a second inclined surface (S2) so as to form a facing angle with respect to the center of the first inclined surface (S1).

The second member 20 is made up of two plates surrounding both sides of the inner pipe P2. The elastic member 21 provided at one end makes elastic force The first body 20a and the second body 20b are divided and formed.

At this time, the first body 20a and the second body

20b form retainers

30a and 30b in the forward and backward directions, respectively, and the

retainers

30a and 30b form the brake 40 Thereby forming a seat portion 31 for supporting.

The first body 20a and the second body 20b constituting the second member 20 are divided into a circumferential direction of the inner pipe P2 having a semicircular column shape surrounding the inner pipe P2, , And the elastic member 21 is provided at one end in the longitudinal direction which is the circumferential direction of the inner pipe P2.

5 to 6B, the other end of the first body 20a and the second body 20b is rotated in a forward or rearward direction corresponding to the sliding movement of the knob unit 50 in the forward and backward directions, A wedge groove end portion 32 having a slope with respect to the forward and backward directions is formed so as to widen or narrow the distance between the other ends of the first body 20a and the second body 20b toward the front in the shape of the forward rearward light.

The elastic member 21 described above is constituted by a compression spring or a tension spring which provides an elastic force to the first body 20a and the second body 20b so that the both wedge groove ends 32 are always opened or closed Or may be made of various materials and shapes such as plate spring or rubber material.

For example, when the above-described elastic member 21 is provided as a compression coil spring, both ends of the elastic member 21 can be fitted to one end of the first body 20a and the second body 20b, The fixing groove 21a or the fixing protrusion may be formed.

The elastic member 21 of the compression coil spring exerts a force in a direction in which the gap between the other ends of the first body 20a and the second body 20b is reduced (arrow Fb in Fig. 6A).

The corresponding knob unit 50 may be formed by forming the wedge protrusion 51 whose side has the shape of a front light bulb or a forward rearward light corresponding to the space between the wedge groove ends 32 described above.

According to this, the user inserts the corresponding wedge projections 51 in a wedge-shaped manner in a narrow direction between the wedge groove ends 32, thereby to form the first body 20a And the other end portions of the second body 20b can be opened against the elastic force of the elastic member 21. [

Here, the knob unit 50 is not limited to the one for opening the other end of the first body 20a and the second body 20b, and the shape of the wedge groove end 32 may be the same The elastic member 21 is formed of a tension coil spring and the wedge protrusion 51 is fitted to the wedge groove end 32 of the elongated hole so that the first body 20a and the second body 20b It is easy to change the design of the second body 20b so that the intervals between the other ends of the second body 20b are mutually disturbed.

On the other hand, the first inclined surface S1 and the second inclined surface S2 formed on the first member 10 are inclined with respect to the first inclined surface S1 and the second inclined surface S2 so as to guide the advancing direction while limiting the moving direction of the brake 40, And a guide groove 11 having an inclination and a length in the left or right direction with respect to the forward and backward directions.

The retainer portions 30 (30a and 30b) opposed to the first inclined surface S1 and the second inclined surface S2 are provided with a seating portion 31 having a length for supporting the brake 40, So that they are oriented at different angles so that at least a part of them cross each other.

The arrangement of the seat portion 31 and the guide groove 11 may be such that the brake 40 moves in the process of sliding the first body 20a and the second body 20b along the circumferential direction of the inner pipe P2, To move in the section between the widthwise center of the first body 20a and the edge of the second body 20b.

That is, the seat portion 31 and the guide groove 11 described above are formed in such a manner that the first body 20a and the second body 20b receive the elastic force of the elastic member 21, The brake 40 placed on the crossover arrangement is moved to the edge portions of the first body 20a and the second body 20b in the width direction through the change of the intersecting positions to form the corresponding first sloped surface S1 or the second sloped surface (S2).

Conversely, the crossing positions of the seating part 31 and the guide groove 11 in the first body 20a and the second body 20b are different from each other by the knob unit 50, And the second body 20b so that the brake 40 is moved away from the first inclined surface S1 and the second inclined surface S2, respectively.

4 to 6A, the outer pipe P1 and the inner pipe P2 are adjusted in length and stably fixed, and the wedge protrusion 51 of the knob unit 50 is in contact with the elastic member 52 The wedge groove end portions 32 are separated from each other by the elastic force.

At this time, the first body 20a and the second body 20b of the second member 20 are in a state of being pressed in a direction in which the gap between the other ends is disturbed by the elastic member 21 provided at one end.

The brakes 40 provided on the

retainer portions

30a and 30b are fitted in a wedge shape in a state of moving in the narrow direction formed by the inner pipe P2 and the first inclined surface S1 or the second inclined surface S2 The vertical drag f1 and f2 are increased with respect to the first sloping surface S1 and the second sloping surface S2 corresponding to the outer surface of the inner pipe P2 by receiving the guidance between the guide groove 11 and the seating portion 31 And the movement of the inner pipe P2 is compensated by the frictional force.

The inner pipe P2 is placed in a state in which the inner pipe P2 can not be drawn out or inserted from the outer pipe P1 without the operation of the knob unit 50. [

6B shows a state in which the user presses the wedge projection 51 of the knob unit 50 in the direction of 'Fa' so that the wedge projection 51 of the knob unit 50 is inserted between the wedge groove ends 32 due to the elastic force of the elastic member 52 Respectively.

At this time, the other end portions of the first body 20a and the second body 20b of the second member 20 move in the direction in which they are widened by the wedge projections 51. [

The brakes 40 provided on the

retainer portions

30a and 30b are moved in the wide spatial direction defined by the first inclined plane S1 or the second inclined plane S2 with respect to the inner pipe P2, And toward the center in the width direction of the second body 20b.

Therefore, the inner pipe P2 can be pulled out or inserted into the outer pipe P1 by the user in a slidable state by eliminating the frictional force by the brake 40, so that the length between the pipes P1 and P2 can be adjusted do.

The first member 10 and the second member 20 constituting the pipe length adjusting device 1 according to the present invention have a plurality of brakes 40 in the form of wrapping the pipe.

Since the plurality of brakes 40 are provided in the respective seating portions 31, a numerical tolerance in manufacturing can be generated, or a seating portion 31 for supporting the brakes 40 according to frequent length adjustments, Or all of the brakes 40 may be difficult to stably fit on the narrow space formed by the inclined surface S and the outer surface of the inner pipe P2.

Preferably, the plurality of mutually adjacent brakes 40 should be able to press uniformly against the sloping surface S. Otherwise, excessive pressure is applied to the brakes 40 that are in contact first, There is a risk of damaging the outer surface.

One of the methods for preventing such an error is to make the first body 20a and the second body 20b described above be made of a synthetic resin material so that the brakes of the peripheral part of the seating part 31 of the retainer parts 30a, The buffer slit 33 may be further formed at the periphery of the portion where the buffer slit 33 is pressed so that the portion corresponding to the buffer slit 33 can be bent in the direction of the buffer slit 33, So as to be brought into contact with the inclined plane S.

That is, each of the buffer slits 33 adjusts the pressure position applied to the retainer 30 by the brake 40 adjacent to the brake 40, so that the plurality of brakes 40 uniformly contact the outer surface of the inner pipe P2 So as to be in contact with the inclined surface S corresponding thereto.

The first member 10 may be divided into a first body 10a and a second body 10b in the same manner as the second member 20 so as to facilitate fabrication and coupling.

The elastic member 52 not shown in FIGS. 6A and 6B is supported by the first member 10 such that the wedge projection 51 of the knob unit 50 is always at a position deviated from the wedge groove end 32 .

Reference numeral 60, which is not shown in FIG. 5, is a fastening member that integrally joins the first member 10 divided into the first body 10a and the second body 10b.

The knob unit 50 is configured to slide through the relationship between the wedge groove end 32 and the wedge projection 51 in FIGS. 4 to 6B, but the present invention is not limited thereto.

7A and 7B, the knob unit 50 is protruded to the outside of the first member 10, and the first body 20a and the second body 20b And the knob unit 50 is connected by a link 55 between the other end of the knob unit 50 and the inner side of the corresponding knob unit 50. The first body 20a and the second body 20b So that the other end portions can be mutually opened.

It will be appreciated that the link 55 structure described above may be replaced with a leaf spring type.

The second member 20 shown in Figs. 4 to 7B is configured to slide in the circumferential direction of the inner pipe P2 at a fixed position with respect to the forward and backward directions.

However, the present invention is not limited to the above structure, and the second member 20 may be formed to have a configuration that is arranged before and after to correspond to the first inclined plane S1 and the second inclined plane S2, respectively, May be configured to push or pull the second member 20 so that the second member 20 is not fixed to any one of the second member 20 that generates the clamping force of the brake 40 in accordance with the progress of the inner pipe P2.

A concrete example of this can be sufficiently outflowed by arranging in the opposite direction to the configuration shown in Fig.

8 to 15 are views showing another embodiment of the pipe length adjusting device according to the present invention.

First, the first member 10 has a cylindrical pipe shape supported by the outer pipe P1 and surrounding the inner pipe P2 at an interval.

The sloped surface S formed along the inner circumferential surface of the first member 10 has a first sloped surface S1 'and a second sloped surface S2' formed to face each other with respect to the inner pipe P2, ). &Lt; / RTI >

The second member 20 includes a first body 20a 'and a second body 20b' sliding along the inner circumferential surface of the first member 10 in the longitudinal direction of the inner pipe P2. .

The reason why the first body 20a 'and the second body 20b' are slidable along the inner circumferential surface of the first member 10 is that the first inclined surface S1 'and the second inclined surface S2' So that the plurality of brakes 40 can be brought into uniform contact with each other.

Specifically, the first body 20a 'surrounds the inner pipe P2 and has a retainer portion 30 corresponding to the first inclined surface S1' on the outer circumferential surface thereof. The brake 40 provided on the seat 31 of the seat 30 is provided to provide a frictional force against the movement of the inner pipe P2.

The second body 20b 'surrounds the inner pipe P2 and has a retainer portion 30 corresponding to the second inclined surface S2' on the outer circumferential surface thereof. The brake 40 provided on the seat 31 of the seat 30 is provided to provide a frictional force against the movement of the inner pipe P2.

The knob unit 50 includes a push slider 55 that pushes either the first body 20a 'or the second body 20b' in a direction opposite to the elastic force of the elastic member 71, do.

8 to 15, the push slider 55 is a ring-shaped ring that surrounds the inner pipe P2, and the knob protrusion 56 is fitted in the through hole 55a, .

The elastic member 71 pushing the first body 20a 'and the second body 20b' respectively pushes each second member stably by the respective support members 70 with a tension spring .

In one embodiment, the support member 70 is fitted into both ends of the cylindrical first member 10 in the form of a cap, and has respective elastic members 71 inside the both end portions.

With this structure, the second member 20 is pushed by the elastic member 71 on both sides in the direction of drawing or inserting the inner pipe P2, so that the brake 40 is guided by the inclined surface S and the inner pipe P2 And the inner pipe P2 is fixed.

The user pushes the knob unit 50 toward the first body 20a 'or the second body 20b' when the user intends to adjust the length according to the direction in which the inner pipe P2 is drawn or inserted.

At this time, the push slider 55 moves any one selected from the first body 20a 'or the second body 20b' in a direction opposite to the elastic force of the elastic member 71 and pushes the first body 20a ' The brake 40, which is caused by the movement of the second body 20b ', is in a state of releasing the pressure on the inner pipe P2.

When the user applies a force in the direction for pulling out or inserting the inner pipe P2, the unselected first body 20a 'or the brake 40 of the second body 20b' Since the second member is pushed into the space where the gap with the inclined plane S is widened, the brake 40 is naturally moved in the direction opposite to the elastic force and releases the pressure on the inner pipe P2.

8, the push slider 55 is ring-shaped to surround the inner pipe P2. Since the knob protrusion 56 is fitted in the through hole 55a, the push slider 55 is integrally formed with the knob unit 50 .

The push slider 55 further has a protruding support bar 55b having a length in the longitudinal direction of the inner pipe P2 on the outer peripheral surface.

The first body 20a 'and the second body 20b' of the second member 20 further define support grooves 22 so that the respective ends of the support bars 55b are fitted.

The first member 10 further includes a rail groove 13 for preventing and guiding the release of the support bar 55b when the push slider 55 is moved.

The support bar 55b serves to support the second member 20 so as not to rotate left and right because the support bar 55b is fitted in the support groove 22. The support bar 55b supports the rail groove 13 Thereby moving forward or backward.

Reference numeral 80, which is not described in FIG. 8, denotes a shock absorber that alleviates an impact applied to a mountaineering stick or the like.

The knob unit 50 shown in Figs. 11 to 15 includes a body 51, a push bar 52 having a length extending forwardly of the body 51, a push bar 52 extending rearward from the body 51, And a pushing ring portion 53 extending around the outer pipe P1 to surround the outer pipe P1.

At this time, the push bar 52 has a length that can be located beyond the front side end of the pipe length adjusting device 1 when the knob unit 50 is moved forward.

According to the structure of the knob unit 50 as described above, the push bar 52 of the knob unit 50, which moves forward when the length of the inner pipe P2 is drawn into the outer pipe P1, The knob unit 50 is brought into contact with the rear of the pushing ring portion 53 of the knob unit 50 constituting the pipe length adjusting device of the pipe length adjusting device and pushes it forward.

Referring to FIGS. 14 and 15, the user pushes the body 51 of the knob unit 50 of the pipe length adjusting device 1 provided in the outer pipe P1 having the largest diameter at the rear most, At this time, the push bar 52 pushes the pushing ring portion 53 'of the adjacent pipe length adjusting device 1' located in front.

Accordingly, the frictional force of the pipe length adjusting devices 1 ', 1 " provided in the pipes having different diameters located in front is released sequentially by a single operation, and the inner pipe is released from the corresponding inner pipe So that the length is reduced.

11 to 15, the elastic member 71, which pushes the first body 20a and the second body 20b respectively, pushes the first body 20a and the second body 20b in a stable manner by a support member 70, .

Specifically, the support member 70 includes a front support member 70a surrounding the periphery of the inner pipe P2 and supporting the front of the first member 10, and a front support member 70b surrounding the periphery of the outer pipe P1, And a rear support member 70b for supporting the rear of the body 10.

Preferably, the rear support member 70b has a structure fixed to the outer pipe P1, and the front support member 70a is configured to guide the inner pipe P2 when the inner pipe P2 is drawn or inserted.

The aforementioned second member 20, the retainer portion 30 and the brake 40 are positioned in the inner space formed by the front support member 70a and the rear support member 70b.

In one embodiment, the front support member 70a and the back support member 70b have a cap shape.

And each of the elastic members 71 is fitted into both ends of the first member 10 in the shape of a cylinder and inwardly of both ends.

With this structure, the brake 40 is sandwiched between the inclined surface S and the outer surface of the inner pipe P2 formed by the elastic members 71 at both sides in the direction in which the inner pipe P2 is drawn out or inserted And the inner side pipe P2 is fixed in position with respect to the external force.

11 to 15, there are shown a pipe length adjusting device 1 for adjusting the lengths of the inner pipe P2 and the outer pipe P1 and the lengths of the inner pipe P2 'and the outer pipe P1' And a pipe length adjusting device 1 " for adjusting the length of the inner pipe P2 " and the outer pipe P1 "

Although four pipes are shown as an example in the drawing, it is obvious that the present invention can be applied to a plurality of pipes only in one embodiment.

As described above, the knobs 50, 50 'and 50' 'applied to the pipe length adjusting device 1, 1', 1 '' of the present invention have the bodies 51 and 52 ', in which the knob protrusions 56 are protruded inward, 53 ', 53', 53 ', 52', 52 "extending to the rear of the body and surrounding the circumference of the outer pipe, 53 ").

At this time, when the user adjusts the length in the backward direction in which the length of the entire pipe is reduced by pulling the inner pipe P2 into the outer pipe P1, the user pushes the body 51 of the knob unit 50 forward, So that friction force by the first body 20a of the body 20 is not generated.

At this time, the push bar 52 of the knob unit 50 moved forward makes up the pipe length adjusting device 1 'of the neighboring pipe as the inner pipe P2 is completely drawn into the outer pipe P1 Is brought into contact with the rear of the pushing ring portion 53 'of the knob 50' and at the same time pushing the pushing ring portion 53 'forward.

At this time, the inner pipe P2 becomes the outer pipe P1 'of the adjacent pipe length adjusting device 1'.

The frictional force between the inner pipe P2 'and the outer pipe P1' is also released continuously according to the configuration of the pipe length adjusting device 1 'of the inner pipe P2' and the outer pipe P1 '.

Subsequently, the push bar 52 'of the forwardly moved knob 50' pushes the pipe length adjuster 1 "of the neighboring pipe as the inner pipe P2 'is completely drawn into the outer pipe P1'. Quot; of the knob 50 " of the knob 50 ", and at the same time pushing the pushing ring portion 53 "

At this time, the inner pipe P2 'becomes the outer pipe P1 "of the adjacent pipe length adjusting device 1".

The frictional force between the inner pipe P2 "and the outer pipe P1" is also released in accordance with the configuration of the pipe length adjusting device 1 "of the inner pipe P2" and the outer pipe P1 ".

Therefore, the user can continuously release the frictional force of the neighboring pipe length adjusting devices 1 ', 1 " by only one operation of operating the knob unit 50 provided in the pipe length adjusting device 1, By releasing the friction of the pipes, the length can be reduced at once.

Next, the structure of the stick 100, which is used as an auxiliary means for supporting the user's body such as climbing, sporting events or a walking aid for a patient by applying the pipe length adjusting device 1 according to the present invention, same.

Although the stick 100 is shown in the form of a folding stick in the city, it can be applied to a conventional insertion stick as long as the pipe length adjusting and locking function using the pipe length adjusting device 1 is applicable. The present invention is not limited to the embodiment of the present invention.

Referring again to Figs. 1 to 3C and Figs. 16 to 19B, the structure of the stick 100 having the pipe length adjusting device 1 according to the present invention is characterized in that at least four or more pipes are used .

The upper pole replacement pipe portion of the stick 100 according to the present invention is inserted into the insertion hole for adjusting the entire length suitable for the user's use. In the case of the folding stick structure, W). &Lt; / RTI >

In the meantime, in the case of the foldable stick, the pipe portion of the stick 100 according to the present invention may include a pointed tip portion 113 which is in contact with the bottom at the bottom end of the bottom at the time of use, Has a foldable form that can be folded by the wire (W).

For ease of explanation, it is shown that the upper pole replacement pipe portion constituting the stick 100 of the present invention is constituted by a first pipe SP1, a second pipe SP2 and a third pipe SP3 And the lower pole replacement pipe portion is composed of the fourth pipe SP4 and the fifth pipe SP5.

It is needless to say that the above-described lower pole replacement pipe portion has the same diameter as that of the upper third pipe SP3, and may have a plurality of as needed.

More specifically, the upper pole replacement pipe portion includes a first pipe SP1 having a user handle 111 at an upper portion thereof, a first pipe length adjusting device P1 'using the first pipe SP1 as an outer pipe P1, A second pipe SP2 as an inner pipe P2 whose insertion or extraction movement in the longitudinal direction is restricted by the first pipe length adjusting device 1a and the second pipe SP2 as an outer pipe P1, And a third pipe SP3 as an inner pipe P2 whose insertion or withdrawal movement in the longitudinal direction is restricted by the second pipe SP2.

As described above, the second pipe SP2 is inserted or drawn out in the longitudinal direction inside the first pipe SP1, and the user who uses the stick 100 according to the present invention adjusts the desired length of use As a length-adjusting pole section.

In other words, when the length of the stick 100 according to the present invention is unfolded in the longitudinal direction, the second pipe SP2 is pulled out to the first pipe SP1 when the user requires a longer length, Can be adjusted to a length suitable for the user.

The third pipe SP3 is inserted or drawn out in the longitudinal direction inside the second pipe SP2 and the tension of the wire W of the following fourth and fifth pipes SP4 and SP5 is fixed or released. As a pole section.

In other words, the wire W restricting the fourth and fifth pipes SP4 and SP5 is inelastically separated from the fourth pipe SP4 and the fifth pipe SP5 so that the tension of the wire W is released Needs to be.

The third pipe SP3 is inserted into the second pipe SP2 to release the tension of the wire W placed across the interior of the second pipe SP2 so that the fourth pipe SP4 and the fifth pipe SP5 are moved in the longitudinal direction To be separable and foldable.

The first pipe length adjusting device 1a controls the first pipe SP1 and the second pipe SP2 to adjust the length of the first pipe SP1 and the second pipe SP2. The second pipe length adjusting device 1b for interrupting the fixing and releasing for adjusting the length of the pipe length adjusting device 1 applies the embodiment of the pipe length adjusting device 1 described above to the same pipe length adjusting device 1 .

16 and 17, in an embodiment, the lower pole replacement pipe portion may include at least two pole replacement pipes having the same diameter as the third pipe SP3, and may be separated in the longitudinal direction Can be folded.

The lower pole replacement pipe portion is fixed to one side of the inner side of the upper pole replacement pipe portion and is constrained by the wire W fixed to the last pipe of the lower pole replacement pipe portion across the inside of the pipe.

The thus configured wire W provides tension to the pole replacement pipe.

The lower pole replacement pipe portion is formed of a fourth pipe SP4 and a fifth pipe SP5 having the same diameter as that of the third pipe SP3, Of course.

1 to 3C, the first pipe length adjusting device 1a and the second pipe length adjusting device 1b, which are applied to the structure of the stick 100 of the present invention, ) Have already been described above with reference to FIGS. 1 to 3 (c) and will be omitted in order to avoid obscuring the gist of the present invention.

In the above description, the first pipe length adjusting device 1a is used for fixing and releasing the second pipe SP2, which is the inner pipe P2, by inserting or pulling out the first pipe SP1 as the outer pipe P1 And the second pipe length adjusting device 1b takes charge of fixing and releasing the third pipe SP3 which is the inner pipe P2 by inserting or withdrawing the second pipe SP2 with the outer pipe P1 do.

It should be noted that the second pipe SP2 is an inner pipe P2 for the first pipe SP1 and the outer pipe P1 is for the third pipe SP3.

The first pipe length adjusting device 1a and the second pipe length adjusting device 1b are used as a pipe length adjusting device 1 so as to be capable of inserting or withdrawing a relatively small inner pipe P2 in the outer pipe P1, So that the position of the inner pipe P2 can be fixed with respect to the outer pipe P1.

As described above, the pipe length adjusting device 1 applied to the stick 100 according to the present invention is configured such that the brake 40 is moved in the inner pipe P2 and the outer side It is easy to firmly fix the pipe P1 and release it.

18 (a) and 18 (b), the stick 100 according to the present invention is configured such that even when the user operates only the first pipe length adjusting device 1a, And has a structure capable of adjusting the length by releasing the fixing.

To this end, the first pipe length adjusting device 1a for restricting the movement of the second pipe SP2 relative to the first pipe SP1 and the second pipe SP2 for moving the third pipe SP3 relative to the second pipe SP2 The second pipe length adjusting device 1b for limiting the length of the second pipe length adjusting device 1b includes a push bar 52 having a length extending forwardly of the body of the knob unit 50, And a pushing ring portion 53 surrounding the pushing ring portion 53.

The push bar 52 of the first pipe length adjusting device 1a for rearward movement of the inner pipe P2 in the rear side of the second pipe It is possible to sequentially adjust the length by one operation by pushing the pushing ring portion 53 of the length adjusting device 1b.

As described above, in the stick 100 according to the present invention, the pipe portion for the lower pole replacement is fixed to one side of the inside of the pipe portion for the upper pole replacement, and is fixed to the last pipe of the pipe portion for the lower pole replacement And is constrained by a wire (W).

19 (a), the upper pole replacement pipe portion includes a wire connection portion 2 fixedly connected to the upper end of the wire W at one side thereof.

The wire connecting portion 2 is a means for fixing and supporting the wire. The wire connecting portion 2 is inserted into the rear side end portion of the second pipe SP2 inserted in the first pipe SP1 in a block shape, Shaped fixing member 2-2 located above the guide member 2-1 and movable in a state where the upper end of the wire W is fixed, And an elastic member 2-3 positioned between the guide member 2-1 and the fixing member 2-2.

Preferably, the guide member 2-1 is formed with a groove portion so that the elastic member 2-3 can be seated therein, and a seating jaw on which the fixing member 2-2 is seated on the rear side and a front- Hole through-hole.

On the other hand, the fixing member 2-2 has a block shape in which the wire W is bundled and fixed, and has a latching jaw which is laterally seated on the end of the guide member 2-1.

The elastic member 2-3 always pushes the fixing member 2-2 and thereby pulls the wire W fixedly connected to the fixing member 2-2 by the elastic force.

As described above, when the brake 40 of the pipe length adjusting device 1 applied to the stick 100 according to the present invention rolls in the narrowing direction between the inclined plane S and the inner pipe P2, To provide a locking force in such a manner as to apply a clamping pressure and release the pressure when the clamping force is applied in the opposite direction.

When the user uses the stick 100 according to the present invention as shown in Fig. 16, the elastic member 2-3 of the wire connecting portion 2 is pulled by the pulling force of the wire W, The replacement pipe portion is pulled backward.

The brake 40 of the pipe length adjusting device 1 is caught in the narrowing direction of the inclined plane S and the inner pipe P2, thereby preventing a micro clearance from being generated.

As a result, after the stick 100 is unfolded, the pipe length adjusting device 1 has the effect of preventing the shaking of the portion constituted by the pipe length adjusting device 1 and the shaking of the fine connecting portion, and the elastic member 2-3 catches the wire W So that the connecting portion of the pole replacement pipe portion is prevented from being separated or shaken.

19 (b), if necessary, the pipe portion of the lower pole of the stick 100 according to the present invention may have a shock-absorbing shock absorber 3 for relieving an impact on one side of the pipe connected to the pointed tip portion 113 .

In the illustrated embodiment, the fifth pipe SP5 constitutes a shock-absorbing shock absorber 3, and the pointed tip 113 hits the bottom of the shock absorber 3, thereby mitigating shock transmitted to the user's wrist.

If necessary, the pointed tip portion 113 is inserted into the fifth pipe SP5 while being fixed by the holder, and a shock-absorber 3 is provided on the upper portion of the holder.

Various known techniques are known for the shock-absorbing shock absorber for such shock-absorbing, and a method of elastic spring, pneumatic pressure, and hydraulic pressure can be applied. In order not to obscure the gist of the present invention, the structure of a specific shock absorber is omitted do.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It is not.

Claims

A sloped surface S having an angle? Set with respect to the forward and backward directions of the inner surface facing the inner pipe P2 is formed by being supported by the outer pipe P1 and fixed or slidable with respect to the forward and backward directions A first member (10);

A second member (20) spaced from the slopes (S) and capable of being fixed or slidable in the forward and backward directions;

A retainer portion (30) extending from the second member (20) in the direction of the inclined surface (S);

And the inner pipe (P2), which is exposed to the inner side, is rotatably supported by the retainer portion (30), and the exposed outer side can contact the inclined surface (S) A brake 40 which rolls in accordance with the progress of the operation;

A knob for connecting the first member 10 and / or the second member 20 to transmit the power so that the first member 10 and the second member 20 come close to each other in the forward and backward directions, Unit 50,

The brake 40 is configured such that the first member 10 and the second member 20 are brought into close contact with the outer surface of the inner pipe P2 while simultaneously contacting the inclined surface S with the outer surface of the inner pipe P2. A pressure is applied to the outer surface of the inclined surface S and the inner pipe P2 in a wedge shape when rolling in a narrowing direction formed by the pipe P2 so that the pressure is relieved when the pressure is applied in the opposite direction Features a pipe length adjuster.
The method according to claim 1,

The retainer portion (30)

Wherein a groove or a hole-shaped seating portion (31) is formed to support at least a part of side edges between the inside and the outside of the brake (40).
The method according to claim 1,

The inclined surfaces S include first inclined surfaces S1 and S1 'that are spaced apart in the forward and backward directions of the inner pipe P2 and form an angle θ in mutually opposite directions with respect to the center between them, Two inclined surfaces S2 and S2 '

The second member 20, the retainer 30 and the brake 40 are installed opposite to the first inclined surfaces S1 and S1 'and the second inclined surfaces S2 and S2'

The knob unit 50 is connected to the first member 10 or the second member 20 to transmit a force according to a user's operation to the first member 10 or the second member 20 Pipe length adjuster.
The method according to claim 1,

The inclined surface S has a first inclined surface S1 and a second inclined surface S1 which are spaced apart from each other in the forward and backward directions with respect to the center of the inner pipe P2, And a second inclined surface S2,

The second member 20 includes two circular arc plates 2 that surround the both sides of the inner pipe P2 between the first inclined plane S1 and the second inclined plane S2 and are slidable along the circumferential direction, The first body 20a and the second body 20b are divided into a first body 20a and a second body 20b which receive an elastic force such that the other ends in the circumferential direction are brought close to each other or opened by the elastic members 21 provided between the respective ends facing each other in the circumferential direction Forming,

The first inclined surface S1 and the second inclined surface S2 are inclined in the left or right direction with respect to the forward and backward directions and the inclination thereof corresponds to the first body 20a and the second body 20b The guide grooves 11 for guiding the movement of the brakes 40 are formed,

The first body 20a and the second body 20b are each provided with a retainer 30 on both sides in the front and rear direction in the width direction and the retainer 30 is fixed to the guide groove 11 And a hole or groove-shaped seating portion 31 partially intersecting with the inside and outside of the seat portion 31,

The knob unit 50 is connected to the first body 20a and the second body 20b so that the gap between the first body 20a and the second body 20b Is opened or narrowed.
5. The method of claim 4,

The first body 20a and the second body 20b are formed by forming a wedge groove end portion 32 having a gap between the opposite ends of the first body 20a and the second body 20b,

The knob unit 50 is provided with wedge projections 51 that closely correspond to both sides of the wedge groove end portion 32 and the wedge projections 51 are formed in a narrow direction between the wedge groove ends 32 The other end of the first body 20a and the second body 20b are pushed apart from each other by pressing and fitting the first body 20a and the second body 20b, And the second end portions of the second body 20b are brought close to each other,

As the first body 20a and the second body 20b are slidingly moved in the circumferential direction of the inner pipe P2 by the elastic force of the elastic member 21, the guide groove 11 and the seating portion 31 And guiding the brake 40 supported therebetween to move in a narrow direction of the space formed by the inner pipe P2 and the first inclined surface S1 or the second inclined surface S2. Regulating device.
6. The method of claim 5,

Wherein the retainer part (30) further comprises a buffer slit (33) cut in a direction parallel to the seating part (31) at a lateral side of the seating part (31).
The method according to claim 1,

The inclined plane S has a first inclined plane S1 'which is spaced apart from the inner pipe P2 in the forward and backward directions and in which the directions of narrowing with respect to the inner pipe P2 are opposite to each other at an angle? And a second inclined surface S2 ';

The second member 20 includes a first body 20a 'having a retainer portion 30 formed in a direction opposite to the first inclined surface S1' and the second inclined surface S2 ' (20b '),

A support member (70) is installed at the front end and the rear end of the first member (10)

The first body 20a 'and the second body 20b' are fixed to the seat 31 of the retainer 30 by an elastic member 71 supported by the support member 70, (40) is brought into elastic contact with the corresponding first inclined surface (S1 ') and the second inclined surface (S2'),

The knob unit 50 is positioned between the first inclined surface S1 'and the second inclined surface S2' and pushes the first body 20a 'or the second body 20b' And a pushing slider (55) for moving the pushing slider in a direction opposite to the elastic force of the pushing slider (55).
8. The method of claim 7,

The push slider 55 is formed in a ring shape surrounding the inner pipe P2 so as to have a through hole 55a according to the design already formed in the peripheral portion thereof, 55b,

The first body 20a 'and the second body 20b' are further formed with support grooves 22 so that both ends of the support bar 55b are fitted, respectively,

Wherein the knob unit (50) is formed with a knob projection (56) which is inserted into the through hole (55a) and is connected to the knob unit (50).
9. The method of claim 8,

The knob unit 50 includes a body 51, a push bar 52 extending forwardly of the body 51, and a push bar 52 extending rearward from the body 51, And a wedge ring portion (53) surrounding the circumference of the ring portion (53)

In adjusting the length at which the inner pipe P2 is drawn into the outer pipe P1,

Wherein the push bar (52) located at the rear side pushes the pushing ring portion (53) located at the front side so that the length thereof is sequentially controlled.
In a stick structure constituted by a plurality of pole replacement pipes,

A first pipe SP1 having a handle 111 at an upper portion thereof and a first pipe SP1 having an outer pipe P1 as a first pipe length adjusting device 1a, A second pipe SP2 as an inner pipe P2 whose movement is restricted and a second pipe length adjusting device 1b which inserts or pulls the second pipe SP2 in the longitudinal direction with the outer pipe P1 as the outer pipe P1, And a third pipe (SP3) as an inner pipe (P2) whose movement is limited,

Wherein the first pipe length adjusting device (1a) and the second pipe length adjusting device (1b) are pipe length adjusting devices according to the first or second aspect of the present invention.
11. The method of claim 10,

And at least two pole replacement pipes having the same diameter as that of the third pipe SP3. The pipe can be folded in a lengthwise direction so as to be folded in a fitting manner, And a pipe portion for a lower pole restrained by a wire (W) fixed to the lower end of the barrel.
11. The method of claim 10,

The knob unit (50) constituting the first pipe length adjusting device (1a) and the second pipe length adjusting device (1b)

A push bar 52 extending forwardly of the body and a pushing ring portion 53 extending rearward of the body and surrounding the circumference of the outer pipe P1,

The pushbars 52 of the first pipe length regulating device 1a positioned at the rear are adjusted to the second pipe length regulating device 1b located at the front in the length adjustment of the inner pipe P2 to the outside pipe P1 And the length of the pipe is adjusted in a sequential manner by pushing the pushing ring portion 53 of the pipe.
12. The method of claim 11,

The upper pole replacement pipe portion includes a wire connection portion (2) fixedly connected to an upper end portion of a wire (W) at an inner side,

The wire connecting portion (2)

A guide member 2-1 which is inserted into the rear end of the second pipe SP2 inserted in the first pipe SP1 in a block shape and is positioned and fixed so as to guide the wire W passing through the center of the second pipe SP2, Shaped fixing member 2-2 located behind the guide member 2-1 and movable in a state in which the upper end of the wire W is fixed, And an elastic member (2-3) positioned between the elastic member (2-2) and the elastic member (2-2).
11. The method of claim 10,

Further comprising a shock absorber (3) for relieving an impact on one side of the pipe connected to the pointed tip (13) provided at the lower portion.