CN2549884Y

CN2549884Y - Telescopic pipe for vacuum cleaner

Info

Publication number: CN2549884Y
Application number: CN 02220920
Authority: CN
Inventors: 沈盘根
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-03
Filing date: 2002-06-03
Publication date: 2003-05-14
Anticipated expiration: 2012-06-03

Abstract

The utility model belongs to the household cleaning facility technical field and relates to a telescopic pipe for vacuum cleaner. The utility model mainly consists of an inner pipe(2) an outer pipe(1). The top of the inner pipe(2) is provided with a positioning concave pit(3), the outer pipe is sleeved out of the inner pipe(2) and whose one end fixes a neck bush(9). The improvements of the utility model are that: the top of the neck bush(9) is articulated with a wane button(7) whose one end is jointed with the neck bush(9) through a spring(5) while the other end is provided with a locking pin(8). When locked, the outward extending end of the locking pin(8) is inserted into a positioning concave pit(3) on the inner pipe(2) by penetrating the neck bush(9). Because the positioning pin can be deeply inserted into the positioning concave pit, the utility model guarantees the reliable locking on the design principles, and not loose as well as slide off even if being used for a long time. The utility model has the notable advantages that the structure is simple, the use is convenient and the utility model can be much more popularized by people than the prior products after being released.

Description

Dust collector expansion pipe

Technical field

The utility model relates to a kind of parts of dust catcher, and especially a kind of architecture advances of dust collector expansion pipe belongs to family expenses cleaning facility technology field.

Background technology

Dust catcher is the cleaning implement of Modern Family's indispensability.In order to make dust catcher in use more convenient, applicant is devoted to the research and the improvement of dust collector expansion pipe for many years always, only just successively applies for to State Intellectual Property Office that the patent No. was 00219979 and 00220914 same title patent April 14 and July 4 in 2000.Wherein 00219979 patent disclosure a kind of dust collector expansion pipe of mainly forming by interior pipe, outer tube, overcoat, interior pipe is gone up stepping and is provided with semicircle groove, outer tube sleeve is contained in outside the interior pipe, one end is equipped with elastic component, its cylindrical has groove, coat suit is outside outer tube, and be resisted against the elastic component two ends, overcoat inside is shaped on flange, outer tube is fixed with the rounded flexure strip in termination, after the assembling, the button-head of described flexure strip is fastened in the semicircle groove of interior pipe through groove, and by the flange pressure holding in the overcoat.That this dust collector expansion pipe has is easy to assembly, pipe range is regulated advantages such as easy, but because locking relies on flexure strip to be fastened in the semicircle groove of interior pipe, therefore easier this phenomenon that occurs after still might slippage, especially parts depreciation when being subjected to greatly active force.

Summary of the invention

The purpose of this utility model is: from the structure design principle angle, propose a kind ofly can thoroughly avoid slip phenomenon, thereby guarantee the dust collector expansion pipe of positive lock.

In order to reach above purpose, dust collector expansion pipe of the present utility model mainly is made up of interior pipe (2), outer tube (1), interior pipe (2) is gone up stepping and is provided with location pit (3), outer tube (1) is sleeved on outside the interior pipe (2), one end secure liner cover (9), its improvements are to be hinged with seesaw button (7) on the neck bush (9), and an end of this button (7) is connected with neck bush (9) by spring (5), and the other end is equipped with stop pin (8); During locking, the external part of stop pin (8) sees through neck bush (9) and inserts in the interior location pit (3) of managing on (2).

In the use, as long as press the button to the spring side, can extract the stop pin that is inserted in neck bush location pit, it is flexible that inner and outer pipe can be plugged each other freely; After regulating pipe range, as long as release button, spring will make alignment pin insert in the location pit of neck bush automatically, the axial location of locking inner and outer pipe.Because alignment pin can more in depth insert the location pit, therefore guaranteed reliable locking, even long-term the use can not become flexible slippage yet from design principle.

Obviously, the utility model is simple in structure, and is easy to use.After estimating to release, will be more welcome than existing product.

Description of drawings

Fig. 1 is the structural representation of the utility model preferred embodiment one.

Fig. 2 is the structural representation of the utility model preferred embodiment two.

The specific embodiment

Embodiment one

The dust collector expansion pipe of present embodiment as shown in Figure 1, its part has outer tube 1, interior pipe 2, location pit 3, button cover plate 4, spring 5, lifter plate 6, seesaw button 7, alignment pin 8, neck bush 9, lining convex tendon 10, interior pipe holddown groove 11.One side stepping of interior pipe 2 is provided with some location pit 3, and another side has axial interior pipe holddown groove 11.Outside the pipe 2, end secure liner cover 9 was managed in the holddown groove 11 in the lining convex tendon 10 on the neck bush 9 is installed in outer tube 1 was sleeved on, thereby had retrained the circumferential relative motion of inner and outer pipe.The side that button cover plate 4 snap fit are installed seesaw button 7 at neck bush 9 makes profile carefully and neatly attractive in appearance.Seesaw button 7 hinges are contained between neck bush 9 and the button cover plate 4.One end of this button 7 is connected with neck bush 9 by spring 5, and the other end is equipped with stop pin 8 by the lifter plate 6 that is connected with it.During locking, the external part of stop pin 8 sees through the through hole on the neck bush 9, in a certain location pit 3 in inserting on the pipe 2, thereby makes axial location between the inner and outer pipe.

When using dust catcher, as long as press seesaw button 7, can pull up the stop pin 8 that is inserted in neck bush 9 location pits 3, free the inner and outer pipe axial constraint, it is flexible that it can be plugged each other freely; After regulating the dust catcher pipe range, as long as release button 7, spring 5 will make alignment pin 8 insert again in the location pit 3 of neck bush 9 automatically, the axial location of locking inner and outer pipe.Facts have proved that the dust collector expansion pipe locking of this structure is very reliable, easy to adjust, long service life.

Embodiment two

The basic structure of present embodiment is identical with embodiment one, the interior pipe holddown groove 11 that difference is embodiment one open with interior pipe 2 cylindricals of location pit 3 relative sides on, lining convex tendon 10 is located in neck bush 9 endoporus that seesaw button 7 relative sides are installed; Present embodiment then interior pipe holddown groove 11 is opened with interior pipe 2 cylindricals of location pit homonymy on, and therefore lining convex tendon 10 has been located in the endoporus of the sidelining cover 9 that seesaw button 7 is installed, the manufacturability of part manufacturing is better like this.

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to replaces or technical scheme that equivalent transformation forms all drops in the protection domain that the utility model requires.

Claims

1. dust collector expansion pipe, mainly form by interior pipe (2), outer tube (1), interior pipe (2) is gone up stepping and is provided with location pit (3), outer tube (1) is sleeved on outside the interior pipe (2), one end secure liner cover (9), it is characterized in that: be hinged with seesaw button (7) on the described neck bush (9), an end of described button (7) is connected with neck bush (9) by spring (5), and the other end is equipped with stop pin (8); During locking, the external part of stop pin (8) sees through neck bush (9) and inserts in the interior location pit (3) of managing on (2).

2. according to the described dust collector expansion pipe of claim 1, it is characterized in that: pipe (2) in described one side have an axial interior pipe holddown groove (11), in the lining convex tendon (10) on the described neck bush (9) is installed in the pipe holddown groove (11).

3. according to the described dust collector expansion pipe of claim 2, it is characterized in that: also contain button cover plate (4), described button cover plate (4) snap fit is installed a side of seesaw button (7) at neck bush (9).

4. according to claim 2 or 3 described dust collector expansion pipes, it is characterized in that: an end of described button (7) is equipped with stop pin (8) by the lifter plate (6) that is connected with it.