CN2443185Y

CN2443185Y - Fixer for telescopic jointing of internal pipe and external pipe

Info

Publication number: CN2443185Y
Application number: CN 00249529
Authority: CN
Inventors: 王志良
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-01
Filing date: 2000-10-01
Publication date: 2001-08-15
Anticipated expiration: 2010-10-01

Abstract

The utility model relates to a fixer for a telescopic joint of an internal pipe and an external pipe, wherein, the internal pipe is inserted into the external pipe; the head of the external pipe is provided with an external thread, the external thread is matched with an internal thread of a thread sleeve, the internal wall of the upper opening of the thread sleeve is a conical opening, a tightening shroud ring with openings is installed in the conical opening, and the tightening shroud ring and the external wall of the internal pipe are tightly matched. When the utility model is used, the external pipe and the thread sleeve can be mutually rotated through the threads. After the top of the external pipe collided with the tightening shroud ring, the tightening shroud ring is pushed. Because the tightening shroud ring has openings, and also forms a cone shape pushed outwards by the external pipe, which results in a gradual decrease of the bore diameter, the internal pipe is tightly surrounded to achieve the purpose of jointing and fixation. The fixer is widely applied, such as the jointing and fixing of an external pipe and an internal pipe of a scooter.

Description

The flexible device that is connected and fixed of inner and outer pipes

The utility model relates to the flexible fixing device that connects between a kind of inner and outer pipes, can be widely used in manpower and drive light-duty wheeled vehicle, as being connected and fixed of montants such as scooter, skid, folding bicycle.

In various product in order to help carrying keeping and transportation etc., often stock being made the inner and outer pipe shell type connects, and at the connection place fixing device for installing, for example the montant of scooter is that inner and outer pipe links, pipe does not insert in the outer tube in the time spent, and folding mutually with base plate simultaneously, is easy to carry, and pipe is fixed after pulling out Len req in the outer tube in when using, and just needs fixing device.Such fixing device of prior art is used the most generally: along axis tube wall is slotted in that outer tube is suitable for reading, in the outside of fluting outer tube pipe collar is installed, pipe collar is taken out tightly by screw and spanner, makes the contraction of outer tube notch and hugs interior pipe, reaches fixedly requirement.The major defect of its existence is a complex structure, and pipe collar and spanner etc. makes trouble, and uses inconvenient operation, and the inner and outer pipe nip is unreliable, and pipe collar volume upper ejector lever external form greatly is not attractive in appearance.

The purpose of this utility model is to overcome the defective that the prior art inner and outer pipes exists in being connected and fixed, and provides a kind of simple in structure, easy to use, is specially adapted to the flexible fixing device that connects of inner and outer pipes such as montant of scooter.

The technological scheme of the flexible device that is connected and fixed of the utility model inner and outer pipes is: interior pipe inserts in the outer tube, the head of its outer tube is shaped on outside thread, the screw-internal thread fit of outside thread and swivel nut, swivel nut inwall suitable for reading is conical mouthful, construction opening lock ring ring in conical mouthful, the lock ring ring is held tightly with the outer wall of interior pipe and is cooperated.

The flexible device that is connected and fixed of the utility model inner and outer pipes, its swivel nut is that metal or plastic materials are made.

The utility model discloses a kind of flexible fixing device that connects of various inner and outer pipes compositions that is applicable to, as the montant that is used for scooter connects, compared with the prior art, have following characteristics: it is except interior, beyond the outer tube itself, it only is the opening lock ring ring in a swivel nut and the swivel nut, insert in the outer tube behind the desired position at interior pipe, swivel nut rotates with the outside thread of outer tube head, after colliding, the top of outer tube and lock ring ring promote the lock ring ring, because the lock ring ring is opening both, is again to cooperate with the conical internal orifice of swivel nut, when extrapolating, dwindled gradually in the aperture by outer tube, therefore lock ring is encircled tight interior pipe, reaches the purpose that is connected and fixed.Whole device construction is very simple, and operation is very easy, and effect is solid and reliable, the external form neat appearance.

Fig. 1 is the flexible device construction schematic representation that is connected and fixed of the utility model inner and outer pipes;

Fig. 2 is that the utility model fixing device is applied to example schematic of scooter montant.

Below in conjunction with Fig. 1-Fig. 2 embodiment of the present utility model is done detailed explanation.

1, outer tube; 2, connect screw thread; 3, swivel nut; 4, outer tube top; 5, conical mouthful of swivel nut inwall suitable for reading; 6, interior pipe; 7, the opening of lock ring ring; 8, lock ring ring; 9, locating stud; 10, sleeve pipe; 11, wheel; 12, rear fork; 13, connecting tube; 14, screw thread; 15, handle; 16, handle sheath.

The utility model relates to a kind ofly forms flexible joining fixing device by inside and outside pipe, and main structure is that swivel nut 3 and lock ring ring 8 are installed outside pipe, and swivel nut can be made by metallic material or plastic materials.The head outer wall system screw thread of outer tube 1, connect screw thread 2 with swivel nut 3 compositions, the top 4 of outer tube 1 promotes lock ring ring 8 after connecting screw thread rotation, because an internal orifice of swivel nut 3 is conical mouthful 5, openning is received little, and lock ring ring 8 is again an opening 7, the lock ring ring diameter is dwindled, pipe 6 in just hugging, pipe 6 is connected and fixed with outer tube 1 in making, and is fixing on the arbitrary position.This fixing device can be widely used in variously being made up of in the product that connects inner and outer pipe.

Being examples of implementation as shown in Figure 2, is that sleeve pipe 10 is arranged at the outer tube 1 ' bottom of scooter, and sleeve pipe 10 connects rear fork 12, and rear fork links to each other with another major component base plate of scooter, and wheel 11 is installed in outer tube 1 ' bottom.Outer tube 1 ' in have in pipe 6 ', can be at interior pipe 6 ' middle installation reed and pin 9, pipe 6 ' and outer tube 1 in pin 9 passes ' positioning hole, can be used as assist location mechanism.By swivel nut 3 ' and lock ring ring 8 ' with interior pipe 6 ' with the main fixing device of outer tube 1 ' form.Pipe 6 in giving ' on connecting tube 13 screw threads 14 connect handles 15, handle has sheath 16 structures outward.

Claims

1, the flexible device that is connected and fixed of inner and outer pipes, be that interior pipe inserts in the outer tube, the head that it is characterized in that outer tube (1) is shaped on outside thread, the screw-internal thread fit of outside thread and swivel nut (3), swivel nut (3) inwall suitable for reading is conical mouthful (5), construction opening (7) lock ring ring (8) in conical mouthful (5), lock ring ring (8) is held tightly with the outer wall of interior pipe (6) and is cooperated.

2, the flexible device that is connected and fixed of inner and outer pipes as claimed in claim 1 is characterized in that swivel nut (3) is that metal or plastic materials are made.