CN201306341Y

CN201306341Y - Telescopic tube structure

Info

Publication number: CN201306341Y
Application number: CNU2009201160093U
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: 2009-03-23
Filing date: 2009-03-23
Publication date: 2009-09-09
Anticipated expiration: 2019-03-23

Abstract

The utility model discloses a telescopic tube structure, which comprises a large tube and a small tube which is movably arranged inside the large tube, wherein, an inflation sleeve with an inflation hole is movably arranged inside the large tube, and the lower end of the small tube is fixedly connected with a locking sleeve, and the center of the locking sleeve is provided with a thread mechanism, and an inflation screw rod with the lower end being provided with an inflation screw head is arranged inside the inflation hole of the inflation sleeve, and the inflation screw rod is connected with the thread mechanism on the locking sleeve in a threading way, and the upper end of the inflation screw rod passes through the thread mechanism to be connected with the upper end of the locking sleeve through a limit device. The large tube can be conveniently locked with the small tube, and the large tube and the small tube are uneasy to be loosened; the unlocking is also very convenient, and the structure is simple; moreover, the outer structure can be simplified, and the telescopic tube structure is uneasy to be damaged by the external force, and the occupied space can be reduced, thereby being convenient to be stored.

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 91, 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 92 rotations on the support and promoting brake slipper 93, 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 expansion sleeve that is provided with inflation port that is coated with of described large size pipe, small size pipe lower end is fixedly connected with cutting ferrule, the cutting ferrule center is provided with thread mechanism, be coated with the expansive screw of lower end band expansion cap head on the inflation port of described expansion sleeve, thread mechanism screw thread on expansive screw and the cutting ferrule spins, and the expansive screw upper end then passes thread mechanism and cutting ferrule upper end and passes through the limit stoper clamping.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 by the said structure scheme.

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 internal diameter of stop collar is less than the internal diameter of large size pipe, the external diameter of small size pipe and the internal diameter of stop collar are suitable, described cutting ferrule lower end limit a step and stop collar blocking mutually.

Preferably, described large size pipe is threaded with stop collar.

Preferably, described thread mechanism is the threaded insert that is fixed on the cutting ferrule center.

Preferably, described thread mechanism also can be for directly being opened in the tapped through hole at cutting ferrule center.

Preferably, described limit stoper comprises the annular groove that is located at the expansive screw end and is installed on split washer on the annular groove.

Improved, preferred limit stoper comprises the annular groove that is located at the expansive screw end, installed a positioning ring additional on annular groove, the inner and outer surface of positioning ring is closely cooperated with expansive screw and small size inner tube wall respectively, the upper end of positioning ring is spacing with it with a split washer.Better guarantee the coaxality between the tube and tube, make big small size pipe be not easy to take place relatively large rocking.Under this kind structure, split washer is not established in the positioning ring lower end, and certainly, positioning ring all is provided with split washer up and down and also is fine.

Improved, described expansion sleeve sidewall also has some grooves, is convenient to the expansion and the elastic recovery of expansion sleeve.

Preferably, described expansion sleeve is plasticity plastic sheath, rubber sleeve or a metallic sheath preferably.

Preferably, the expansion cap head of described expansive screw is taper, and the inflation port lower end in the described expansion sleeve corresponds to cone structure.

Improved, described expansion sleeve is a tubular, and the expansion sleeve diapire offers perforation, then all establishes some muscle walls by ring on the expansion sleeve ring wall and forms inflation port, saves material like this, also is convenient to expansion sleeve and expands, and makes operation lighter.This structure is fit to rigidity stronger relatively gold cover or plastic sheath.For relatively softer rubber sleeve class then can directly use cylindrical structure, offer cone shape hole at the expansion sleeve center and on the expansion sleeve ring wall, evenly offer some and get final product.

Preferably, described small size pipe and cutting ferrule riveted joint.

At first expansive screw is passed expansion sleeve during installation and screw in threaded insert in the cutting ferrule again, until the annular groove that exposes its upper end, in annular groove, snap in split washer then, again four associations that form are filled in and rivet in the small size pipe firmly, then expansion sleeve is gone in the large size pipe together with small size pipe close, be inserted in stop collar more in the top and screw in case extract out, the clockwise relatively rotation of big small size pipe do of holding with a firm grip respectively of this moment as both hands, because the spiral motion of threaded insert and expansive screw, expansive screw meeting relative expansion puts and moves, to such an extent as to can outwards opening to form between bigger static friction two pipes with the inwall swelling of large size pipe, expansion sleeve can't do relative rotation and axial displacement, otherwise, big small size pipe hold respectively with a firm grip when doing counterclockwise relatively rotation as both hands, expansive screw can move down by the relative expansion cover, expansion sleeve can draw in and restores to the original state owing to elasticity itself, and the static friction disappearance between expansion sleeve and the large size pipe can move axially the realization Telescopic between the big small size pipe easily.The utility model can be not easy to become flexible easily with the large size pipe and the small size pipe locking of telescopic pipe, and release is also very convenient, and is simple in structure, also simplifies external structure simultaneously, is not subject to outside powerful the damage, and 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 is the sectional view of expansion sleeve among Fig. 3;

Fig. 5 is the worm's eye view of Fig. 4;

Fig. 6 is the another kind of structural representation of expansion sleeve.

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 1 and the active trumpet pipe 2 that is installed in the large size pipe, the interior also active expansion sleeve 3 that is provided with inflation port 31 that is coated with of described large size pipe, the 2 lower ends riveted joint of small size pipe has cutting ferrule 4, cutting ferrule 4 centers are provided with thread mechanism, be coated with the expansive screw 5 of lower end band expansion cap head 51 on the inflation port 31 of described expansion sleeve 3, thread mechanism screw thread on expansive screw 5 and the cutting ferrule 4 spins, expansive screw 5 upper ends then pass thread mechanism and cutting ferrule 4 upper ends and pass through the limit stoper clamping, mouth end at large size pipe 1 also is provided with stop collar 6, the large size pipe is threaded with stop collar, the internal diameter of stop collar 6 is less than the internal diameter of large size pipe 1, and the external diameter of small size pipe 2 and the internal diameter of stop collar 6 are suitable, described cutting ferrule 4 lower ends limit a step 41 and stop collar 6 blocking mutually.

Thread mechanism described in the present embodiment is the threaded insert 7 that is fixed on cutting ferrule 4 centers, limit stoper then comprises the annular groove 52 that is located at expansive screw 5 ends, on annular groove 52, adorned a positioning ring 53, the inner and outer surface of positioning ring is closely cooperated with expansive screw and small size pipe 2 inwalls respectively, the upper end of positioning ring is spacing with it with a split washer 8, better guarantee the coaxality between the tube and tube, make big small size pipe be not easy to take place relatively large rocking.Under this kind structure, split washer 8 can not established in positioning ring 53 lower ends, and certainly, positioning ring all is provided with split washer 8 up and down and also is fine.

Above-mentioned limit stoper also can include only the annular groove that is located at the expansive screw end and be installed on split washer 8 on the annular groove 52.But its stability can be under some influence.

Described expansion sleeve 3 sidewalls also have some grooves 32, are over against two that are provided with in the present embodiment, are convenient to the expansion and the elastic recovery of expansion sleeve, and described expansion sleeve is plasticity plastic sheath, rubber sleeve or a metallic sheath preferably.

The expansion cap head 51 of described expansive screw is taper, and inflation port 31 lower ends in the described expansion sleeve 3 correspond to cone structure, are convenient to the expansion of expansion sleeve.

In the present embodiment, described expansion sleeve 3 is a tubular, and expansion sleeve 3 diapires offer perforation 33, then all establish some muscle walls 34 by ring on the expansion sleeve ring wall and form inflation port 31, save material like this, also is convenient to expansion sleeve and expands, and makes operation lighter.This structure is fit to rigidity stronger relatively gold cover or plastic sheath.For relatively softer rubber sleeve class then can directly use cylindrical structure, offer cone shape hole at the expansion sleeve center and on the expansion sleeve ring wall, evenly offer some grooves and get final product, as shown in Figure 6, certain above-mentioned two kinds of structures also can the intercommunication replacement.

Thread mechanism in the foregoing description also can be for directly being opened in the tapped through hole at cutting ferrule center.

Expansion sleeve in the foregoing description can also be square structure, and inflation port then is made of the trapezoidal hole of opening at sidewall, and the expansion cap head is a corresponding long strip structure and suitable with inflation port.Certainly the cooperating structure of expansion sleeve and expansion-head can also be realized for other various structures.

Claims

1, a kind of flexible pipe structure, comprise large size pipe (1) and the active trumpet pipe (2) that is installed in the large size pipe, it is characterized in that: the interior also active expansion sleeve (3) that is provided with inflation port (31) that is coated with of described large size pipe, small size pipe lower end is fixedly connected with cutting ferrule (4), the cutting ferrule center is provided with thread mechanism, be coated with the expansive screw (5) of lower end band expansion cap head (51) on the inflation port of described expansion sleeve (31), thread mechanism screw thread on expansive screw and the cutting ferrule spins, and expansive screw (5) upper end then passes thread mechanism and cutting ferrule (4) upper end and passes through the limit stoper clamping.

2, a kind of flexible pipe structure according to claim 1, it is characterized in that: the mouth end at described large size pipe is provided with stop collar (6), the internal diameter of stop collar is less than the internal diameter of large size pipe, the external diameter of small size pipe and the internal diameter of stop collar are suitable, described cutting ferrule lower end limit a step (41) and stop collar (6) blocking mutually.

3, a kind of flexible pipe structure according to claim 2 is characterized in that: described thread mechanism is the threaded insert (7) that is fixed on the cutting ferrule center.

4, a kind of flexible pipe structure according to claim 1 and 2 is characterized in that: described thread mechanism is for directly being opened in the tapped through hole at cutting ferrule center.

5, according to claim 2 or 3 described a kind of flexible pipe structures, it is characterized in that: described limit stoper comprises the annular groove (52) that is located at expansive screw (5) end and is installed on split washer (8) on the annular groove.

6, according to claim 2 or 3 described a kind of flexible pipe structures, it is characterized in that: described limit stoper comprises the annular groove (52) that is located at expansive screw (5) end, also be provided with a positioning ring (53) on the annular groove, the inner and outer surface of positioning ring closely cooperates with expansive screw and small size inner tube wall respectively, and the upper end of positioning ring is spacing by split washer (8).

7, a kind of flexible pipe structure according to claim 2 is characterized in that: described expansion sleeve (3) sidewall also has some grooves (32).

8, a kind of flexible pipe structure according to claim 7 is characterized in that: described expansion sleeve is plasticity plastic sheath, rubber sleeve or a metallic sheath preferably.

9, a kind of flexible pipe structure according to claim 7 is characterized in that: the expansion cap head (51) of described expansive screw is taper, and inflation port (31) lower end in the described expansion sleeve corresponds to cone structure.

10, a kind of flexible pipe structure according to claim 2 is characterized in that: described expansion sleeve is a tubular, and expansion sleeve (3) diapire offers perforation (33), then all has ring to establish some muscle walls (34) on the expansion sleeve ring wall and forms inflation port.