CN201335063Y

CN201335063Y - Extension-tube structure

Info

Publication number: CN201335063Y
Application number: CNU2009201128153U
Authority: CN
Inventors: 徐建群
Original assignee: Zhejiang Huaguang Electric Appliance Group Co Ltd
Current assignee: Zhejiang Huaguang Electric Appliance Group Co Ltd
Priority date: 2009-01-13
Filing date: 2009-01-13
Publication date: 2009-10-28
Anticipated expiration: 2019-01-13

Abstract

The utility model discloses an extension-tube structure which comprises a large-sized tube and a small-sized tube which passes through the large-sized tube in a loose manner. An adjusting rotating shaft also passes through the large-sized tube in a loose manner; the small-sized tube is fixedly connected at the upper end of the adjusting rotating shaft; a clamping mechanism which is controlled by the adjusting rotating shaft in a rotating manner and is arranged at the lower end of the adjusting rotating shaft is connected with an inner wall of the large-sized tube in a clamping manner; the clamping mechanism comprises at least one groove formed on the side wall at the lower end of the adjusting rotating shaft; an annular buckling table which protrudes gradually is arranged in the groove; a shoe block is sleeved in the groove; a sliding chute corresponding to the annular buckling table is formed on the shoe block; and when the adjusting rotating shaft rotates leftwards and rightwards, the annular buckling table is driven to rotate to push the shoe block to move in a radial direction of the adjusting rotating shaft, so as to be buckled or loosed with the inner wall of the large-sized tube. The extension-tube structure can conveniently lock up the large-sized tube and the small-sized tube of an extension-tube, has the advantages of low possibility of looseness, very convenient unlocking, simple structure and simplification of an external structure at the same time, is less susceptible to damage caused by the external brute force, reduces the occupied space, and is convenient to place.

Description

A kind of flexible pipe structure

Technical field

The utility model relates to a kind of flexible pipe structure.

Background technique

It is of a great variety now to be used in the telescopic clothes rack or the flexible pipe structure on other common telescopic clothes rack, the fork clothes hanger etc. that are equipped with as hanging ironing machine on the market, but mostly between the tube and tube or adopt structure as Fig. 1,2 of promptly small size pipe 1 and large size pipes are by being threaded, and it can't stretch arbitrarily; Adopt structure as shown in Figure 2, large size pipe 2 ends are provided with support 31, tubule passes support and stretches into the large size pipe, the trumpet pipe blocks small size pipe realization adjusting by being located at cam spanner 32 rotations on the support and promoting brake slipper 33, though it can freely stretch, but because coupling mechanism force is not enough, when hanging heavier clothing on the telescopic pipe top, telescopic pipe can be to lower slider, can cause inconvenience to the user like this, and cam handle externally brute force reverse or collide down easily and damage, and take up room, influence is placed.

The model utility content

Technical problem to be solved in the utility model just provides a kind of flexible pipe structure, it can be locked the large size pipe and the small size pipe of telescopic pipe easily, be not easy to become flexible, release is also very convenient, simple in structure, also simplify external structure simultaneously, be not subject to outside powerful the damage, minimizing takes up room, and is convenient to place.

For solving the problems of the technologies described above, the utility model adopts following technological scheme: a kind of flexible pipe structure, comprise large size pipe and the active trumpet pipe that is installed in the large size pipe, it is characterized in that: the interior also active adjusting rotating shaft that is equipped with of large size pipe, regulate the rotating shaft upper end and fixedly connected, regulate the rotating shaft lower end and be provided with by blocking mechanism and the active clamping of large size inner tube wall of regulating the rotating shaft Spin Control with small size pipe.Realize large size pipe and the active locking of small size pipe and simplify external structure that be not subject to outside powerful the damage, minimizing takes up room, the purpose of being convenient to place.

Improved, in use be drawn out of because of carelessness for fear of the trumpet pipe, hold at the mouth of large size pipe to be provided with stop collar.

The described large size mouth of pipe is threaded with stop collar.

Preferably, described clamping mechanism comprises at least one groove that is located on the sidewall of adjusting rotating shaft lower end, be provided with the annular snap platform of projection gradually in the groove, also be arranged with brake slipper in the described groove, brake slipper is provided with the chute corresponding with the annular snap platform, when regulating the rotating shaft left-right rotation, drive the rotation of annular snap platform promote brake slipper along regulating the rotating shaft radial direction to move with the blocking of large size inner tube wall or remove blocking.

Preferably, groove on the sidewall of described adjusting rotating shaft lower end is the annular groove around whole adjusting rotating shaft, described brake slipper is for being two that the center is symmetrically distributed with the large size tubular axis heart, described annular snap platform correspondence be two that the center is symmetrically distributed with the large size tubular axis heart.

Preferably, described annular snap platform is an involute formula raised structures.

Preferably, described brake slipper is the semicircular structure that external diameter is less than or equal to the large size bore.

Improved, offer annular groove on the brake slipper ring wall of described semicircular structure, can save material, the more important thing is in stress owing to there being similar double layer construction to play the effect of strengthening blocking.

Improved, described annular groove closed at both ends.Two-part up and down to the annular groove outer wall play firm effect.

Preferably, described brake slipper is made for the plastics brake pad material.

The utility model is owing to adopt technique scheme, when adjusting telescopic pipe length, will be big, small size pipe is done relative rotation, the annular snap platform of regulating in the rotating shaft can back down two brake slipper, the endoporus of the peripheral shape of two brake slipper and large size pipe can form interference to a certain degree at this moment, because two brake slipper are conditioned rotating shaft and large size pipe mutual extrusion, so, greatly, just produced a bigger frictional force between the small size pipe and be locked and move axially, when needs are adjusted once more, as long as will be big, small size pipe is done counterrotating, and brake slipper will return, extruding disappears, just can do axial twitch between two pipes, thereby can be not easy during locking to become flexible easily with the large size pipe and the small size pipe locking of telescopic pipe, release is also very convenient, simple in structure, also simplify external structure simultaneously, be not subject to outside powerful the damage, minimizing takes up room, and is convenient to place.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further described:

Fig. 1 is a kind of structural representation of existing flexible pipe structure;

Fig. 2 is the another kind of structural representation of existing flexible pipe structure;

Fig. 3 is the example structure schematic representation of a kind of flexible pipe structure of the utility model;

Fig. 4 be among Fig. 3 A-A to sectional view (brake slipper contact locking state);

Fig. 5 is the structural representation of brake slipper locking state among Fig. 4.

Embodiment

As Fig. 3, Fig. 4, shown in Figure 5, be a kind of flexible pipe structure of the utility model, comprise large size pipe 2 and the active trumpet pipe 1 that is installed in the large size pipe, the interior also active adjusting rotating shaft 4 that is equipped with of large size pipe, fixedly connected with small size pipe 1 in adjusting rotating shaft 4 upper ends, small size pipe can adopt riveted structure to be connected with the adjusting rotating shaft.Regulating rotating shaft 4 lower ends is provided with by blocking mechanism and the active clamping of large size inner tube wall of regulating the rotating shaft Spin Control.In use be drawn out of because of carelessness for fear of the trumpet pipe, hold the stop collar 5 that has been threaded at the mouth of large size pipe.

Described clamping mechanism comprises at least one groove 41 that is located on the adjusting rotating shaft 4 lower end sidewalls, be provided with the annular snap platform 42 of projection gradually in the groove, also be arranged with brake slipper 6 in the described groove, brake slipper 6 is provided with the chute corresponding with the annular snap platform 61, when regulating the rotating shaft left-right rotation, drive the rotation of annular snap platform promote brake slipper along regulating the rotating shaft radial direction to move with the blocking of large size inner tube wall or remove blocking, brake slipper is made for the plastics brake pad material in the present embodiment, groove 41 on the described adjusting rotating shaft 4 lower end sidewalls is the annular groove around whole adjusting rotating shaft, described brake slipper is for being two that the center is symmetrically distributed with the large size tubular axis heart, described annular snap platform correspondence be two that the center is symmetrically distributed with the large size tubular axis heart, described annular snap platform is an involute formula raised structures, but the steady lock brake slipper was advisable about the design of its involute projection was spent with adjusting rotating shaft rotation 45.Described brake slipper is the semicircular structure that external diameter is less than or equal to the large size bore.

Improved, offer annular groove 62, the annular groove closed at both ends on brake slipper 6 ring walls of described semicircular structure.

When adjusting telescopic pipe length, will be big, small size pipe is done relative rotation, the annular snap platform of regulating in the rotating shaft 4 42 can back down two brake slipper 6, the endoporus of the peripheral shape of two brake slipper and large size pipe can form interference 7 to a certain degree at this moment, as shown in Figure 5, because two brake slipper are conditioned rotating shaft and large size pipe mutual extrusion, so, greatly, just produced a bigger frictional force between the small size pipe and be locked and move axially, when needs are adjusted once more, as long as will be big, small size pipe is done counterrotating, brake slipper will return, extruding disappears, and just can do axial twitch between two pipes, thereby can easily the large size pipe and the trumpet of telescopic pipe be managed locking.

Claims

1, a kind of flexible pipe structure, comprise large size pipe (2) and the active trumpet pipe (1) that is installed in the large size pipe, it is characterized in that: the interior also active adjusting rotating shaft (4) that is equipped with of large size pipe (2), regulate the rotating shaft upper end and fixedly connected, regulate the rotating shaft lower end and be provided with by blocking mechanism and the active clamping of large size inner tube wall of regulating the rotating shaft Spin Control with small size pipe.

2, a kind of flexible pipe structure according to claim 1, it is characterized in that: described clamping mechanism comprises at least one groove (41) that is located on the sidewall of adjusting rotating shaft (4) lower end, be provided with the annular snap platform (42) of projection gradually in the groove, also be arranged with brake slipper (6) in the described groove, brake slipper is provided with the chute corresponding with the annular snap platform (61), when regulating the rotating shaft left-right rotation, drive the rotation of annular snap platform promote brake slipper along regulating the rotating shaft radial direction to move with the blocking of large size inner tube wall or remove blocking.

3, a kind of flexible pipe structure according to claim 2, it is characterized in that: the groove (41) on the sidewall of described adjusting rotating shaft lower end is the annular groove around whole adjusting rotating shaft, described brake slipper is for being two that the center is symmetrically distributed with the large size tubular axis heart, described annular snap platform correspondence be two that the center is symmetrically distributed with the large size tubular axis heart.

4, according to claim 2 or 3 described a kind of flexible pipe structures, it is characterized in that: the mouth end of described large size pipe (2) is provided with stop collar (5).

5, a kind of flexible pipe structure according to claim 4 is characterized in that: the described large size mouth of pipe is threaded with stop collar.

6, a kind of flexible pipe structure according to claim 4 is characterized in that: described annular snap platform (42) is an involute formula raised structures.

7, a kind of flexible pipe structure according to claim 6 is characterized in that: described brake slipper is the semicircular structure that external diameter is less than or equal to the large size bore.

8, a kind of flexible pipe structure according to claim 7 is characterized in that: offer annular groove (62) on the brake slipper of described semicircular structure (6) ring wall.

9, a kind of flexible pipe structure according to claim 8 is characterized in that: described annular groove closed at both ends.

10, a kind of flexible pipe structure according to claim 7 is characterized in that: described brake slipper is made for the plastics brake pad material.