CN200946613Y

CN200946613Y - Stepless regulation friction ring locked type telescopic tube

Info

Publication number: CN200946613Y
Application number: CNU200620077119XU
Authority: CN
Inventors: 陈建忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-16
Filing date: 2006-08-16
Publication date: 2007-09-12
Anticipated expiration: 2016-08-16
Also published as: WO2008022526A1

Abstract

A stepless regulating friction ring self-locking type telescopic tube comprises an inner tube, an outer tube and a locking device, wherein the inner tube is slidably nested in the outer tube. The utility model is characterized in that the locking devices contains a locking ring, a slider and an elastic element, wherein the locking ring is a cylindrical open ring, which is embedded between the inner tube and the outer tube and is, relative to the outer tube, positioned and connected in axial direction. Ends at two open sides of the locking ring are provided with symmetric chutes, ends of which at one side are relatively close while at the other side are relatively far away; the slider is positioned in slidable connection to the outer tube and at the bottom has two downward guide columns, which are in inlay cooperation with two chutes on the locking ring; the elastic element is positioned between one side of the slider and the outer tube, and the elasticity thereof forces the slider to move towards the relatively parting ends of the two chutes to make the locking ring contract and lock the inner tube; the slider is provided with a connected unlock control button toward external side of the outer tube. Since the regulation is stepless, the utility model has convenient usage, reliable lock and wide application range.

Description

Step-less adjustment friction ring locked type telescopic pipe

Technical field

The utility model relates to a kind of telescopic pipe of step-less adjustment, and this telescopic pipe can be loaded on the vacuum cleaner and use as the dust suction bar, also can be loaded on the article such as mop, vidicon camera, clothing fork to use as strut or operating stem.

Background technique

In the modern life, flexible pipe structure is a common structure, and its Applicable scope is very wide, can be used for the extending means that all lengths has the requirement regulated, such as hand-held dust suction bar on the vacuum cleaner, the mop bar of family expenses mop, support arm of vidicon camera or the like.

Know through new patent searching, not following tens kinds of the patent of existing telescopic pipe, the disclosed telescopic pipe of these patent schemes is to have level to regulate mostly, wherein tool is breakthrough and representationally be: Chinese patent is announced and disclosed a patent No. on July 7th, 2004 is 03239096.3, name is called the utility model patent of " sweep-up pipe of vacuum cleaner ", this patent scheme introduction be the telescopic tube of a kind of lockpin-type locking, its concrete structure is as follows: it comprise interior pipe, outer tube and be located in the middle cover that is connected with the outer tube end between pipe and the outer tube; Offer a plurality of locking through holes on the described inner pipe wall at interval, corresponding outer tube and middle cover are provided with the Lever type elastic button, the Lever type elastic button is provided with dead bolt, and dead bolt relies on elastic force to be against from outside to inside on the outer wall of interior pipe, and cooperates locking in the locking aperture of embedding outer wall; And because of being sweep-up pipe, tube wall has airtight requirement, also must serve as a contrast an internal lining pipe again in the tube chamber of interior pipe.Clearly, the length adjustment that above-mentioned side states the disclosed telescopic pipe of scheme has level, can only be limited in each location, locking aperture place, and flexible degrees of freedom is limited, and it is still not too convenient to use.

And the telescopic pipe of existing a spot of step-less adjustment, its representative structure is: mainly the head that is fastenedly connected that is fixed on inner tube portion by interior pipe, outer tube and embedding is formed.The fastened connecting head of the tube chamber of this telescopic pipe has been blocked, and whole tube chamber is obstructed, therefore can only use as support operation bars such as mop bar, clothing fork arms, and can't use narrow application range as the dust suction bar of vacuum cleaner.

Summary of the invention

The purpose of this utility model provides a kind of applied widely, the step-less adjustment telescopic pipe that functional reliability is high.

For achieving the above object, the technical solution adopted in the utility model is: a kind of step-less adjustment friction ring locked type telescopic pipe, comprise interior pipe, outer tube and locking device, inside and outside nested being slidingly connected of interior pipe and outer tube, its innovative point is: described locking device is made of locking ring, slide block and elastic element; Locking ring is a cylindrical open loop, and it is embedded between interior pipe and the outer tube and relative outer tube is located by connecting the outer circumferential face contact matching of the inner peripheral surface of locking ring and interior pipe in the axial direction; Be arranged with skewed slot on the end of locking ring opening both sides, two skewed slots, one side end is close relatively, end side relatively away from; Described slide block is corresponding to the opening of locking ring, outer sliding tube settings that be dynamically connected relatively, and the bottom surface of slide block is to having two guide pillars, this two guide pillar and the corresponding embedding cooperation of two skewed slots on the locking ring; Be provided with elastic element between slide block one side and the outer tube, elastic element force slide block towards two skewed slots relative to away from tip side move, make locking ring shrink pipe in the locking; Be provided with the unlocking operation button to the outer tube outside on the described slide block.

Related content in the technique scheme is explained as follows:

1, in the such scheme, described " locking ring is a cylindrical open loop; it is embedded between interior pipe and the outer tube and relative outer tube is located by connecting in the axial direction " wherein said locking ring is that relative outer tube is located by connecting in the axial direction, mean locking ring directly location card be connected on the outer tube, or be positioned on the outer tube by an intermediate transit part, concrete positioning connection can be with the draw-in groove clamping.

2, in the such scheme, preferred version is: this telescopic pipe also comprises a middle cover, and this middle cover is embedded between outer tube and interior pipe, and middle cover is fixedlyed connected with outer tube, and the middle cover inner peripheral surface is provided with annular positioning groove; Described locking ring is embedded in this annular positioning groove, is located by connecting in the axial direction with this relative outer tube.

Further scheme is again: corresponding slide block bottom surface is provided with a direction recess on the described middle cover outer surface, and corresponding two guide pillars in direction recess bottom respectively offer slotted hole; Described slider bottom is embedded in the direction recess and is slidingly matched with groove, and the guide pillar on the slide block leads to slide block by direction recess with this in slotted hole extends the skewed slot of locking ring downwards, improves the axial validity that slide block slides, and avoids it to block in slip.

3, in the such scheme, described locking ring can be a single layer structure, make by nylon or rubber material, but optimum scheme is bondingly to be made of two-layer inside and outside outer elastic metal layer and the interior friction layer, outer elastic metal layer adopts Elastic Steel, effect provides dilatational elasticity and increases fastness, and interior friction layer adopts rubber or nylon to make, and effect is to increase frictional force.

The utility model working principle is: as accompanying drawing 1, press shown in accompanying drawing 2, accompanying drawing 4 and the accompanying drawing 5, under general state, slide block 4 under stage clip 14 effect towards two skewed slots 5 relative to away from tip side move, two guide pillars 6 on the slide block 4 cooperate with two skewed slots 5 makes locking ring 3 contractions tightly hold interior pipe 1 tightly, thus locked location.And locking ring 3 is located by connecting in the axial direction by middle cover 8 and outer tube 2, so outer tube 2 and interior pipe 1 have also just remained on locking state.When needs are flexible, press direction of arrow promotion unlocking operation button 7 in the accompanying drawing 2, the active force that makes slide block 4 overcome stage clip 14 moves relative to close tip side to two skewed slots 5, and two guide pillars 6 on the slide block 4 cooperate with two skewed slots 5 makes locking ring 3 expansions, thus release; This moment can be freely with the indentation or from outer tube, pull out in outer tube 2 of interior pipe 1, adjust the total length of pipe.When adjusting puts in place, just unclamp unlocking operation button 7, slide block 4 promptly can be under stage clip 14 effect again to two skewed slots 5 relatively away from tip side move, locking ring 3 is shunk, multiple hold tightly again in the pipe locking, thereby the stepless length adjustment of realization telescopic pipe.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1, because the utility model is to adopt the locking ring locking, and adjusting length is step-less adjustment, and flexible degrees of freedom is big, the extension position locking that can need arbitrarily.

2, same owing to the utility model is to adopt the locking ring locking, this telescopic pipe all is in lock state under general state, just need press unlocking operation button adjusting joint when need are regulated, and is easy to use.

3, same because the utility model is to adopt the locking ring locking, the experiment proved that: latching force is greater than 300N, and the locking release can reach more than 10,000 times working life.

4, because special construction of the present utility model, in locking ring is provided in a side of between pipe and the outer tube, it is unobstructed that the tube chamber of telescopic pipe is still keeping, and it is airtight, reached the dust suction bar requirement of vacuum cleaner, therefore it both can be loaded on the article such as mop, vidicon camera, clothing fork and remove strut or operating stem use as one, also can be loaded on the vacuum cleaner and use as the dust suction bar, and was applied widely.

Description of drawings

Accompanying drawing 1 is each exploded sketch of the utility model;

Accompanying drawing 2 is the utility model assembling schematic representation;

Accompanying drawing 3 is the cross sectional representation at the utility model locking device place;

Accompanying drawing 4 is the effect schematic representation of the utility model locking device;

Accompanying drawing 5 is the schematic cross-section of the A-A direction of accompanying drawing 4.

In the above accompanying drawing: 1, interior pipe; 2, outer tube; 3, locking ring; 4, slide block; 5, skewed slot; 6, guide pillar; 7, unlocking operation button; 8, middle cover; 9, annular positioning groove; 10, direction recess; 11, slotted hole; 12, outer elastic metal layer; 13, interior friction layer; 14, stage clip; 15, rectangular hole; 16, locating bump.

Embodiment

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

Embodiment: shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, a kind of step-less adjustment friction ring locked type telescopic pipe is made up of interior pipe 1, outer tube 2, middle cover 8 and locking device.Outer tube 2 one ends are flared end, wherein are embedded middle cover 8, and middle cover 8 and outer tube 2 are connected pipe 1 in embedding again in the middle cover 8 with screw.

Shown in accompanying drawing 1～accompanying drawing 5, locking device is made of locking ring 3, slide block 4 and stage clip 14; Middle cover 8 inner peripheral surfaces are provided with annular positioning groove 9, and locking ring 3 is embedded in this annular positioning groove 9, are located by connecting in the axial direction with this relative outer tube 2, and the inner peripheral surface of locking ring 3 cooperates with the outer circumferential face of interior pipe; Specifically see accompanying drawing 1, accompanying drawing 4 and accompanying drawing 5 for details, locking ring 3 is a cylindrical open loop, and it is close relatively to be arranged with skewed slot 5, two skewed slots 5 one side ends on the end of locking ring 3 opening both sides, end side relatively away from; Described slide block 4 is corresponding to the opening of locking ring 3, outer tube 2 settings that be slidingly connected relatively, and the bottom surface of slide block 4 is to having two guide pillars 6, two skewed slots, the 5 corresponding embeddings cooperations on this two guide pillar 6 and the locking ring 3.

Shown in accompanying drawing 1 and accompanying drawing 2, corresponding slide block 4 has a rectangular hole 15 on the outer tube 2, embeds for slide block 4, and a side of rectangular hole 15 is provided with the locating bump 16 of a voltage supply spring 14 terminal sockets; Be provided with stage clip 14 between slide block 4 rear ends and the locating bump 16, the elastic force of stage clip 14 force slide block 4 towards front end to two skewed slots 5 relative to away from tip side move, two guide pillars 6 on the slide block 4 cooperate with two skewed slots 5 makes locking ring 3 shrink pipe 1 in the locking; Be provided with unlocking operation button 7 to outer tube 2 outsides on the described slide block 4.

Shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, the outer surface of concrete middle cover 8 is provided with also corresponding slide block 4 bottom surfaces and offers a direction recess 10, and corresponding two guide pillars 6 in direction recess 10 bottoms respectively offer slotted hole 11; Described slide block 4 bottoms are embedded in the direction recess 10 and are slidingly matched with direction recess 10, and the guide pillar 6 on the slide block 4 is in corresponding slotted hole 11 extends the skewed slot 5 of locking ring 3 downwards.

Shown in accompanying drawing 1, accompanying drawing 3, accompanying drawing 5, described locking ring 3 is made of bonding inside and outside outer elastic metal layer 12 and the interior friction layer 13.Concrete outer elastic metal layer 12 is an Elastic Steel layer, and interior friction layer 13 is a rubber layer.

The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims

1, a kind of step-less adjustment friction ring locked type telescopic pipe, comprise interior pipe [1], outer tube [2] and locking device, inside and outside nested being slidingly connected of interior pipe [1] and outer tube [2], it is characterized in that: described locking device is made of locking ring [3], slide block [4] and elastic element; Locking ring [3] is a cylindrical open loop, and it is embedded between interior pipe [1] and the outer tube [2] and relative outer tube [2] is located by connecting the inner peripheral surface of locking ring [3] and the outer circumferential face contact matching of interior pipe in the axial direction; Be arranged with skewed slot [5] on the end of locking ring [3] opening both sides, two skewed slots [5] one side ends are close relatively, end side relatively away from; Described slide block [4] is corresponding to the opening of locking ring [3], outer tube [2] settings that be slidingly connected relatively, and the bottom surface of slide block [4] is to having two guide pillars [6], this two guide pillar [6] and the corresponding embedding cooperation of two skewed slots [5] on the locking ring [3]; Be provided with elastic element between slide block [4] one sides and the outer tube [2], elastic element force slide block [4] towards two skewed slots [5] relative to away from tip side move, make locking ring [3] shrink pipe [1] in the locking; Described slide block [4] is gone up to outer tube [2] outside and is provided with unlocking operation button [7].

2, step-less adjustment friction ring locked type telescopic pipe according to claim 1, it is characterized in that: this telescopic pipe also comprises a middle cover [8], this middle cover [8] is embedded between outer tube [2] and interior pipe [1], middle cover [8] is fixedlyed connected with outer tube [2], and middle cover [8] inner peripheral surface is provided with annular positioning groove [9]; Described locking ring [3] is embedded in this annular positioning groove [9], is located by connecting in the axial direction with this relative outer tube [2].

3, step-less adjustment expansion self-locking formula telescopic pipe according to claim 2, it is characterized in that: corresponding slide block [4] bottom surface is provided with a direction recess [10] on described middle cover [8] outer surface, and direction recess [10] corresponding two guide pillars in bottom [6] respectively offer slotted hole [11]; Described slide block [4] bottom is embedded in the direction recess [10] and is slidingly matched with direction recess [10], and the guide pillar [6] on the slide block [4] is in corresponding slotted hole [11] extends the skewed slot [5] of locking ring [3] downwards.

4, step-less adjustment expansion self-locking formula telescopic pipe according to claim 1 is characterized in that: described locking ring [3] is by outer elastic metal layer [12] and the bonding formation of interior friction layer [13].