CN2391551Y

CN2391551Y - Telescopic hose of suction cleaner

Info

Publication number: CN2391551Y
Application number: CN99239423U
Authority: CN
Inventors: 徐为尔
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-26
Filing date: 1999-08-26
Publication date: 2000-08-16
Anticipated expiration: 2009-08-26
Also published as: AU1767100A; WO2001015591A1

Abstract

The utility model relates to a telescopic dust suction hose on a suction cleaner, which comprises an outer tube (7), an inner tube (2) inserted into an inner cavity of the outer tube (7), tube lining (10) which is inserted between the outer tube (7) and the inner tube (2) and is fixed to the outer tube (7), and a locking device for locking the relative positions of the outer tube (7) and the inner tube (2). The utility model is characterized in that the locking block (9) comprises two locking columns which are simultaneously positioned in two adjacent positioning slots (3) on the inner tube (2) when the locking device is in a locking state. The stress of a slide block is uniform, and the slide block is not easy to cause the tube lining to be deformed. Therefore, when the inner and the outer tubes are expanded and contracted, the hand feeling is good.

Description

Telescopic pipe on the dust catcher

The utility model relates to the sweep-up pipe on a kind of dust catcher.

In the prior art, the sweep-up pipe on the dust catcher is for easy to use, and usually being designed to can telescopic structure.For example the described sweep-up pipe of Europe patent EP0293518 comprises outer tube, the locking device of the pipe bushing, locking outer tube and the interior pipe relative position that are inserted in interior pipe in the described outer tube bore, are inserted between described outer tube and the interior pipe and fix with outer tube; Existing locking device is to have axial slide block slot on pipe bushing, the rear portion hollow out of slide block slot also is placed with roller, above this roller is pressed in by slide block, the below of roller is pressed in the detent and the bottom surface of roller contacts with detent surface face, and the top of described slide block is pushed down by outer tube and made described slide block can not radially break away from slide block slot.Because the contact position of roller and slide block is straight line, therefore in pulling relatively, manage and during outer tube, the detent of interior pipe can apply a radial load to roller, this radial load is delivered on the slide block by the line contact, make slide block very big at the pressure that the contact position with roller is subjected to, slide block can deform and upwards arch upward, thereby make the gap between slide block lower bottom part and the detent become big, roller might break away from detent and misplace, cause can't lock between the inner and outer pipe, influence stretching between the inner and outer pipe.

The purpose of this utility model is to provide the telescopic pipe on a kind of dust catcher, when the locking mechanism on this sweep-up pipe stretches relatively at inner and outer pipe, and the radial load that slide block evenly is subjected to everywhere.

The technical solution of the utility model is: the telescopic pipe on a kind of dust catcher, the locking device of pipe bushing, locking outer tube and the interior pipe relative position that comprise outer tube, is inserted in interior pipe in the described outer tube bore, is inserted between described outer tube and the interior pipe and fixes with outer tube; Described locking device is that described pipe bushing is provided with sliding chamber, slidely connects slide plate in this cunning chamber, and the below of described slide plate is provided with clamping block, and described slide plate is connected with push button; Clamping block on the locking device comprises two locking columns and is in the lock state down at locking device that described two locking columns are positioned at two the adjacent detents on the pipe simultaneously, are connected by the locking column contiguous block between described two locking columns; The described bottom that is positioned at the locking column of detent is a circular arc, when described locking device is in the lock state, described slide plate is pressed on the clamping block and clamping block is positioned at described detent, and when locking device was in released state, described clamping block broke away from described detent.

The utility model compared with prior art has following advantage:

Because two locking columns connect as one by the locking column contiguous block, therefore what whole clamping block applied radial load to slide block is a face, so the pressure that slide block is subjected to diminishes, slide block is not yielding, guaranteed that the gap between the latch recess on slide block lower bottom part and the interior pipe can not become big, when interior pipe was subjected to bigger axial impact force, clamping block of the present utility model still can keep locking to inner and outer pipe.

The utility model will be further described below in conjunction with drawings and Examples:

Accompanying drawing 1 is the structure cutaway view of the utility model under locking device is in the lock state;

Accompanying drawing 2 is the B-B direction cutaway view of accompanying drawing 1;

Accompanying drawing 3 is in structure cutaway view under the released state for the utility model at locking device;

Accompanying drawing 4 is the D-D direction cutaway view of accompanying drawing 1;

Accompanying drawing 5 is the A-A direction cutaway view Amplified image of accompanying drawing 1;

Accompanying drawing 6 is the C-C direction cutaway view Amplified image of accompanying drawing 3; Wherein:

[1]. the guiding raised line; [2]. interior pipe; [3]. detent; [4]. spring; [5]. slide plate; [6]. push button; [7]. outer tube; [8]. screw; [9]. clamping block; [10]. pipe bushing; [11]. the pipe bushing flange; [12]. sliding chamber; [[15], push button jack; [16], push button contiguous block; [17], flexure strip; [18], locking column contiguous block; [19], lock dog depression.

Embodiment: the telescopic pipe on a kind of dust catcher, the locking device of the pipe bushing [10] that comprises outer tube [7], is inserted in interior pipe [2] in described outer tube [7] inner chamber, is inserted between described outer tube [7] and the interior pipe [2] and fixes with outer tube [7], locking outer tube [7] and interior pipe [2] relative position; Described locking device is that described pipe bushing [10] is provided with sliding chamber [12], slidely connects slide plate [5] in this cunning chamber [12], and the below of described slide plate [5] is provided with clamping block [9], and described slide plate [5] is connected with push button [6]; Clamping block on the locking device [9] comprises two locking columns and is in the lock state down at locking device, described two locking columns are positioned at adjacent two detents [3] on the pipe [2] simultaneously, are connected by locking column contiguous block [18] between described two locking columns; The described bottom that is positioned at the locking column [9] of detent [3] is a circular arc, when described locking device is in the lock state, described slide plate [5] is pressed on the clamping block [9] and clamping block [9] is positioned at described detent [3], when locking device was in released state, described clamping block [9] broke away from described detent [3].The bottom surface of described slide plate [5] has the upwards lock dog depression [19] of depression, and when described locking device was in released state, two locking columns of described clamping block [9] were positioned at described lock dog depression [19].Be provided with flexure strip [17] between described slide plate [5] and the described clamping block [9], this flexure strip [17] makes described clamping block [9] be tending towards pressing to interior pipe [2].Pipe [2] is axially arranged with guiding raised line [1] to outer lug in described, laterally be provided with on the described guiding raised line [1] a plurality of be parallel to each other and with the axial vertical detent that caves inward [3]; Described guiding raised line [1] is inserted in the axial groove on described pipe bushing [10] inwall, and described guiding raised line [1] is slidingly connected with described axial groove.Described clamping block [9] is square frame shape, and described locking device is in the lock state down, and the upper surface of clamping block [9] is face with described slide block [5] and contacts.

Claims

1. the telescopic pipe on the dust catcher, the locking device of the pipe bushing [10] that comprises outer tube [7], is inserted in interior pipe [2] in described outer tube [7] inner chamber, is inserted between described outer tube [7] and the interior pipe [2] and fixes with outer tube [7], locking outer tube [7] and interior pipe [2] relative position; It is characterized in that: described locking device is that described pipe bushing [10] is provided with sliding chamber [12], slidely connects slide plate [5] in this cunning chamber [12], and the below of described slide plate [5] is provided with clamping block [9], and described slide plate [5] is connected with push button [6]; Clamping block on the locking device [9] comprises two locking columns and is in the lock state down at locking device, described two locking columns are positioned at adjacent two detents [3] on the pipe [2] simultaneously, are connected by locking column contiguous block [18] between described two locking columns; The described bottom that is positioned at the locking column [9] of detent [3] is a circular arc, when described locking device is in the lock state, described slide plate [5] is pressed on the clamping block [9] and clamping block [9] is positioned at described detent [3], when locking device was in released state, described clamping block [9] broke away from described detent [3].

2. the telescopic pipe on the dust catcher according to claim 1, it is characterized in that: the bottom surface of described slide plate [5] has the upwards lock dog depression [19] of depression, when described locking device was in released state, two locking columns of described clamping block [9] were positioned at described lock dog depression [19].

3. the telescopic pipe on the dust catcher according to claim 1 is characterized in that: be provided with flexure strip [17] between described slide plate [5] and the described clamping block [9], this flexure strip [17] makes described clamping block [9] be tending towards pressing to interior pipe [2].

4. the telescopic pipe on the dust catcher according to claim 1, it is characterized in that: pipe [2] is axially arranged with guiding raised line [1] to outer lug in described, laterally be provided with on the described guiding raised line [1] a plurality of be parallel to each other and with the axial vertical detent that caves inward [3]; Described guiding raised line [1] is inserted in the axial groove on described pipe bushing [10] inwall, and described guiding raised line [1] is slidingly connected with described axial groove.

5. the telescopic pipe on the dust catcher according to claim 1 is characterized in that: described clamping block [9] is square frame shape, and described locking device is in the lock state down, and the upper surface of clamping block [9] is face with described slide block [5] and contacts.