Summary of the invention
Technical problem to be solved by this invention is, but to the deficiency of prior art a kind of bending telescoping tube is provided, and is simple and compact for structure, in bending, realizes the flexible of body, and the cleaning scope is big and easy to operate.
Technical problem to be solved by this invention realizes through following technical scheme:
But a kind of bending telescoping tube, pipe and outer tube in comprising, interior pipe is plugged in the outer tube, and can in outer tube, slide and locate; Described outer tube is made up of first outer tube and second outer tube, and both are connected through bending mechanism; Be provided with the cavity that is used for ccontaining body between first outer tube and second outer tube; Be provided with telescopic flexible pipe in the described outer tube, this telescopic flexible pipe one end links to each other with interior pipe, and the other end links to each other with second outer tube; When telescopic flexible pipe was positioned at said cavity, described first outer tube and second outer tube relatively rotated through bending mechanism.
Described bending mechanism comprises lock gear; The terminal both sides of said first outer tube are provided with first gear ring; The terminal both sides of said second outer tube are provided with second gear ring; Described lock gear is folded between first gear ring and second gear ring, and described lock gear is simultaneously meshing with said first gear ring and second gear ring, makes between first outer tube and second outer tube locked; Perhaps described lock gear and said second gear ring break away from, and make between first outer tube and second outer tube and can rotate.
The position that said first outer tube is provided with first gear ring also includes first housing; This first housing is provided with in the terminal both sides of first outer tube at interval; The cavity middle part of each side first housing all is provided with dividing plate, and the edge of dividing plate is provided with depressed part, and forms the gap between the cavity inner wall of first housing; Offer through hole on the dividing plate, the through hole of dividing plate is provided with locking cap, and the inside of locking cap radially from inside to outside is provided with fore-set along body, and the top of fore-set is arranged with the button release spring, and the lug boss of the other end of button release spring and bending button release below is replaced; The edge of bending button release extends to form dog downwards, and the end of dog passes said depressed part, and is adjacent with described lock gear side; The end of dog also is provided with barb, colludes to be located on first outer tube; The opposite side of dividing plate is equipped with first gear ring along first inner walls; First gear ring is provided with convexity; Be arranged on the two ends of the same diameter of first housing, form a pair of, its be provided with the lock slots offered on position and the same diameter of said lock gear that the position is set is corresponding; Meshing on first gear ring have a lock gear, is provided with gear spring between the lock gear and second gear ring, and a side of gear spring and a side of lock gear are replaced, and opposite side is replaced with the said second gear ring inboard mutually.
The position that described second outer tube is provided with second gear ring also includes second housing; This second housing is provided with in the terminal both sides of second outer tube at interval; The outside, the bottom surface of second housing of both sides against each other and tangent with the end face of first housing; The described second gear ring ring is located on the inwall of second housing, and inboard center, the bottom surface of second housing convexes with reference column, and this reference column is connected with described locking cap engaging.
Described lock gear comprises the gear body; Evenly be provided with a plurality of teeth on the circumference of described gear body; In the upper edge, a side of said gear body the gear body radially direction offers a plurality of lock slots from the circumferential center of circle; Said lock slots cooperates with first gear ring and second gear ring, but makes said bending telescoping tube locking or bending.
Described lock slots is 4, and per 2 lock slots that are opened on the same diameter of lock gear are a pair of, and wherein the cell body root of pair of locking groove convexes with rib; The thickness of described rib is the half the of transverse tooth thickness, and the length of rib is identical with the length of lock slots.
In described 4 lock slots, the acute angle angular range between the two adjacent grooves is 30 °-80 °, and the obtuse angle angle is 150 °-100 °; Acute angle angle between the two adjacent grooves is preferably 60 °, and the obtuse angle angle is preferably 120 °.
Described another cell body to lock slots extends from the root to the end and is provided with joint face, and the length of joint face equates that with tooth depth thickness is identical with rib thickness, half the for transverse tooth thickness.
For the ease of the sealing of body, the bottom of pipe in an end of said flexible pipe directly is fixed on; Perhaps, an end of said flexible pipe links to each other with interior pipe through joint one, between joint one and the flexible pipe for being threaded or glue or quadric injection mould moulding connection or interference connection.
As required, the magnification scope of said telescopic flexible pipe is 2: 1 to 5: 1; Be preferably 3: 1.
In sum, but bending telescoping tube provided by the invention is simple and compact for structure, in bending, realizes the flexible of body, and the cleaning scope is big and easy to operate.
Below in conjunction with the accompanying drawing and the specific embodiment technical scheme of the present invention is at length explained.
The specific embodiment
Fig. 1 is an overall structure sketch map of the present invention.As shown in Figure 1, but a kind of bending telescoping tube, pipe 1 and outer tube in comprising, interior pipe 1 is plugged in the outer tube, and can in outer tube, slide and locate; Described outer tube is made up of first outer tube 21 and second outer tube 22, and both are connected through bending mechanism; Be provided with the cavity that is used for ccontaining body between first outer tube 21 and second outer tube 22; Be provided with telescopic flexible pipe 5 in the described outer tube, these telescopic flexible pipe 5 one ends link to each other with interior pipe 1, and the other end links to each other with second outer tube 22; When telescopic flexible pipe 5 was positioned at said cavity, described first outer tube 21 and second outer tube 22 relatively rotated through bending mechanism.
Fig. 2 is the partial structurtes sketch map of the flexible releasing device of the present invention.As shown in Figure 2, for the ease of the flexible of body controlled, described telescoping tube also comprises flexible releasing device, and interior pipe 1 slides in outer tube through flexible releasing device.Specifically, described flexible releasing device comprises lining 25 and telescoping tube push button, and the telescoping tube push button is involuted by push button upper casing 26 and push button drain pan 27 two parts; Be coated on the front end of first outer tube 21; The front end of first outer tube 21 is provided with roller slot 31, is embedded with roller 28 in the roller slot 31, manages on 1 outer wall in lining 25 is set in; Offer groove on the lining 25, interior pipe 1 tube wall is provided with a plurality of pits 29; The inner surface of push button upper casing 26 is provided with protuberance, and protuberance compresses roller 28 through groove on the pit 29 of interior pipe 1, pipe 1 relative and outer tube location in making.Moving telescopic pipe push button, protuberance departs from the compacted position to roller 28, and roller 28 can spin off from pit 29, and interior pipe 1 can be pulled and in outer tube, slide.Push button drain pan 27 is provided with button release spring support and button release spring, and the telescoping tube push button is in the reciprocal pushing action that is implemented under the effect of button release spring on the lining 25, and roller 28 is compressed or loosens.
Fig. 3 is the perspective view of bending mechanism of the present invention; Fig. 4 is the cutaway view of bending mechanism of the present invention.Like Fig. 3 and combine shown in Figure 4; Described bending mechanism comprises lock gear 4; The terminal both sides of said first outer tube 21 are provided with first gear ring 41, and the terminal both sides of said second outer tube 22 are provided with second gear ring 42, and described lock gear 4 is folded between first gear ring 41 and second gear ring 42; Described 4 whiles of lock gear are meshing with said first gear ring 41 and second gear ring 42, make between first outer tube 21 and second outer tube 22 locked; Perhaps described lock gear 4 breaks away from said second gear ring 42, makes between first outer tube 21 and second outer tube 22 and can rotate.
Fig. 5 is the structural representation of the present invention's first gear ring.In conjunction with Fig. 3; As shown in Figure 5; The position that said first outer tube 21 is provided with first gear ring 41 also includes first housing 43, and this first housing 43 is provided with in first outer tube, 21 terminal both sides at interval, and the cavity middle part of each side first housing 43 all is provided with dividing plate 45; The edge of dividing plate 45 is provided with depressed part 48, and forms the gap between the cavity inner wall of first housing 43; Offer through hole on the dividing plate 45; The through hole of dividing plate 45 is provided with locking cap 49; The inside of locking cap 49 radially from inside to outside is provided with fore-set 52 along body; The top of fore-set 52 is arranged with button release spring 44, and the lug boss of the other end of button release spring 44 and bending button release 47 belows is replaced, and locking cap 49 plugs fixing with the reference column that inboard, said second housing, 43 bottom surface is convexly equipped with; The edge of bending button release 47 extends to form dog 54 downwards, and the end of dog 54 passes said depressed part 48, and is adjacent with described lock gear 4 sides; The end of dog 54 also is provided with barb, colludes to be located on first outer tube 21; The opposite side of dividing plate 45 is equipped with first gear ring 41 along first housing, 43 inwalls; First gear ring 41 is provided with protruding 51; Be arranged on the two ends of first housing, 43 same diameters, form a pair of, its be provided with the lock slots 56 offered on position and the said lock gear 4 same diameters that the position is set is corresponding; Meshing on first gear ring 41 have a lock gear 4, is provided with gear spring 46 between the lock gear 4 and second gear ring 42, and a side of gear spring 46 and a side of lock gear 4 are replaced, and opposite side is replaced with said second gear ring 42 inboards mutually.
Fig. 6 is the structural representation of the present invention's second gear ring.As shown in Figure 6; The position that described second outer tube 22 is provided with second gear ring 42 also includes second housing 55; This second housing 55 is provided with in second outer tube, 22 terminal both sides at interval, the outside, the bottom surface of second housing 55 of both sides against each other and tangent with the end face of first housing 43, described second gear ring, 42 rings are located at second gear ring 42 on the inwall of second housing 55; Inboard center, the bottom surface of second housing 55 convexes with reference column 53, and this reference column 53 is connected with described locking cap 49 engagings.
Like Fig. 3-shown in Figure 6, bending mechanism comprises first outer tube 21, the second outer tubes 22, bending button release 47, lock gear 4 and the gear spring 46.First outer tube 21 connects through fore-set 52 with second outer tube 22, and this fore-set 52 is equivalent to pivot, and the axis of this pivot is vertical with the central shaft of interior pipe outer tube.When telescoping tube is stretched to when the longest, press bending button release 47, the first outer tubes 21 and second outer tube 22 simultaneously and just can rotate, first outer tube 21 and second outer tube 22 all the time in same plane with certain angle bending.Lock gear 4 between first outer tube 21 and second outer tube 22, can be simultaneously and the interior ring gear on first outer tube 21 and second outer tube 22 meshing.Be provided with gear spring 46 between said second outer tube 22 and the lock gear 4, can promote lock gear 4 and eject.When first outer tube 21 and second outer tube 22 in a straight line the time; Convexity 51 on the lock gear 4 and first outer tube 21 and second outer tube 22 is simultaneously meshing; Making wins can't rotate between the outer tube 21 and second outer tube 22; The huge torsion that gear shape produces in the time of telescoping tube being born load evenly disperses, and guarantees that telescoping tube can not be destroyed.When the needs bending, press bending button release 47, lock gear 4 is pushed in second outer tube 22, and this moment, 4 of the lock gear and second outer tube 22 were meshing, and first outer tube 21 and second outer tube 22 can freely rotate.
Fig. 7-1 is the structural representation of lock gear of the present invention to Fig. 7-3.Like Fig. 7-1 to Fig. 7-3 and combine Fig. 5, shown in Figure 6; Described lock gear 4 comprises gear body 401; Evenly be provided with a plurality of teeth 402 on the circumference of described gear body 401, in the present embodiment, evenly be provided with 12 teeth on the circumference of described gear body 401.In the upper edge, a side of said gear body 401 gear body 401 radially direction offers a plurality of lock slots 56 from the circumferential center of circle, said lock slots 56 cooperates with first gear ring and second gear ring 42, but makes locking of said bending telescoping tube or bending.Lock slots 56 in the present embodiment is 4, is opened in per 2 lock slots 56 on the lock gear 4 same diameters for a pair of, and it is on same straight line and 180 ° at interval, and 4 lock slots 56 are divided into two pairs.Wherein the cell body root of pair of locking groove 56 convexes with rib 57; The thickness of described rib 57 is the half the of transverse tooth thickness, and the length of rib 57 is identical with the length of lock slots 56.The purpose that rib 57 is set is in order to make when the lock-out state, and the lock gear 4 and first outer tube 21 are not exclusively meshing, but first outer tube 21 and second outer tube 22 can be simultaneously meshing with lock gear 4.In described 4 lock slots 56, the acute angle angular range between the two adjacent grooves is 30 °-80 °, and the obtuse angle angle is 150 °-100 °, and the acute angle angle is preferably 60 °, and the obtuse angle angle is preferably 120 °.In 4 lock slots 56 in the present embodiment, the acute angle angle between the two adjacent grooves is exactly 60 °, and the obtuse angle angle is 120 °.Described another cell body to lock slots 56 extends from the root to the end and is provided with joint face, and the length of joint face equates that with tooth depth thickness is identical with rib 57 thickness, half the for transverse tooth thickness.This joint face is corresponding to the sipes in second outer tube 22, and is as shown in Figure 6, and its effect is for the ease of assembling.
The external structure sketch map of Fig. 8-1 during for bending of the present invention-60 °; Fig. 8-2 concerns sketch map in the position of lock gear and first, second gear ring during for bending of the present invention-60 °; Fig. 8-3 is the external structure sketch map during for 75 ° of bendings of the present invention; The position of lock gear and first, second gear ring concerned sketch map when Fig. 8-4 bent 75 ° for the present invention.Like Fig. 8-1 to Fig. 8-4 and combine Fig. 5, shown in Figure 6, said first outer tube 21 and second outer tube, 22 corresponding lock gear 4 be respectively arranged with corresponding protruding 51 with groove 48.Said first outer tube 21 is provided with convexity, be preferably a pair of, therebetween at a distance from 180 °, in a straight line promptly, said protruding 51 when last second outer tube, 22 latched positions and the groove on the lock gear 4 meshing.When first outer tube 21 and second outer tube 22 freely rotate between a certain angle; The lock gear 4 and second outer tube 22 are meshing fully; Convexity 51 on first outer tube 21 is to be free to slide on the gear face between two grooves of 120 ° at angle on the lock gear 4; This moment, bending mechanism can not automatically lock, and the angle between two outer tubes can change between a certain angle continuously, makes things convenient for the user to clean.Generally, because first outer tube 21 and second outer tube 22 are for to be plugged in together, because both end constructions each other; When bending each other; The end can interfere, and therefore, bent angular range is 0~75 ° between first outer tube 21 and second outer tube 22.When first outer tube 21 and second outer tube 22 rotate between-60~0 °; The lock gear 4 and second outer tube 22 are meshing fully, and the convexity 51 on first outer tube 21 is to slide on the gear face between two grooves of-60 ° at angle on the lock gear 4, when being-60 ° of angles between last second outer tube 22; Protruding 51 be positioned at lock gear 4 on the meshing position of groove; Under the effect of gear spring 46, lock gear 4 is meshing by ring gear and first outer tube, 21 ring gears that part ejects second outer tube 22.This moment, last second outer tube 22 was locked, and no longer freely rotated.
Need to prove that the mode that defines that the angle described in the preceding text is positive and negative when the telescoping tube level is straight, is 0 ° of benchmark, the angle that body is rotated in a clockwise direction on the occasion of, be negative value along the angle of rotation counterclockwise.
Fig. 9 connects the partial structurtes sketch map for flexible pipe.As shown in Figure 9, interior pipe 1 is connected with second outer tube 22 and bellows 5, can solve the problem of sealing, and bellows 5 one ends can be managed 1 bottom through joint or in directly being fastened on.Bellows 5 and joint can be connected and seal through screw thread, glue or quadric injection mould moulding; Joint can pass through modes such as screw thread, glue, interference and be connected and sealing with interior pipe 1; Certain bellows 5 can also pass through methods such as screw thread, glue and directly be connected sealing with interior pipe 1.In like manner, bellows 5 other ends also can be connected with the bottom of second outer tube 22 and seal in order to upper type.Thus pipe 1 bottom and second outer tube, 22 bottoms just formed a length can telescopic variation and the air channel of sealing.
As shown in Figure 9; When 1 of interior pipe was inserted into first outer tube 21, pipe 1 bottom and second outer tube, 22 bottoms in bellows 5 still is connected were because bellows 5 is flexible; So first outer tube 21 and second outer tube 22 can pass through the bending mechanism bending, and can also keep sealing.Having solved general telescoping tube can not bending, the non-retractable problem of bending tube.
As required, the magnification scope of said telescopic flexible pipe 5 is 2: 1 to 5: 1; Be preferably 3: 1, the magnification that is adopted in the present embodiment is exactly its preferred proportion value.
Below in conjunction with accompanying drawing course of action of the present invention is at length explained:
Figure 10-1 concerns sketch map for the present invention in the position of linear state bottom hose and bending mechanism; Figure 10-2 is the external structure sketch map under the linear state of the present invention; Figure 10-3 concerns sketch map for the position of the present invention lock gear and first gear ring, second gear ring under linear state.To Figure 10-3 and combine shown in Figure 4ly, the present invention is under linear state like Figure 10-1, and flexible pipe 5 is in the state of tightening; And be positioned at the inside of second outer tube 22; At this moment, lock gear 4 can be simultaneously meshing with first gear ring 41 and second gear ring 42 between first outer tube 21 and second outer tube 22; Therefore, first outer tube 21 and second outer tube, 22 alignings can't bendings.For satisfying different instructions for uses, pipe 1 inserts the degree of depth of outer tube in can regulating through flexible releasing device, thereby the different length of realizing the folding retractable pipe changes.With reference to Fig. 2 with, under the normal condition, location in the pit 29 of pipe 1 in two protuberances of push button upper casing 26 belows of flexible releasing device are pressed on roller 28, interior pipe 1 is fixed with the relative position of outer tube.When the length of the internal pipe 1 of needs is regulated, pin push button upper casing 26 and drain pan 27 earlier, manage 5 directions inwardly and move, make the position deviation roller 28 of two protuberances of push button upper casing 26 belows, no longer compress.Pipe 5 stretches out it or is retracted into Len req in the pulling.At this moment, pin push button upper casing 26 and drain pan 27 once more, under the effect of button release spring 44, the internally adjustment of pipe collapsing length is realized in location in the pit 29 of tube side pipe in move, two protuberances of push button upper casing 26 belows are pressed on roller 28 again outwardly.
When interior pipe 1 stretches out the length long enough of outer tube, when making flexible pipe be positioned at the cavity of the ccontaining body in bending mechanism middle part just, can carry out bending operation to it.Figure 11 treats that for the present invention the position of flexible pipe and bending mechanism concerns sketch map before the bending.Shown in figure 11, the extreme position for managing in the present invention that is to say, in the embodiment shown in fig. 11, flexible pipe 5 is moved to the longest, and the length that interior pipe 1 stretches out outer tube also is the longest.Under this state, press bending button release 47, under the effect of button release spring 44; Bending button release 47 can have a displacement downwards, this moment the dog 54 that bending button release 47 edges extend to form downwards end, pass between the cavity inner wall that dividing plate 45 edges are provided with the groove 48 and first housing 43 and form the gap; Act on the side of lock gear 4, make lock gear 4 break away from first gear ring 41, only meshing with second gear ring 42; First outer tube 21 and second outer tube 22 go out of lock; Just can rotate, can free bending in the certain angle scope, need not bend over just can easily sweep under sofa or the bed to make things convenient for the user.When first outer tube 21 and second outer tube 22 were converted into special angle, bending mechanism can also lock, and sweeps places such as some special corners or wardrobe top to make things convenient for the user.
When the cleaning of having accomplished specific position; In the time of need the telescoping tube of dust catcher being reverted to straightened condition; Pipe and outer tube in can holding respectively, court's opposite direction of overbending direction exerts oneself, under the effect of gear spring that lays respectively at lock gear 4 both sides 46 and button release spring 44; Lock gear 4 self-returns, simultaneously meshing with first gear ring 41 and second gear ring 42 again.
In sum, the present invention is simple and compact for structure, can be in the certain angle scope free bending, and body can freely stretch, and increased dust catcher cleaning scope, and easy to operate.
The embodiment of in the foregoing description, specifically enumerating, no matter be bending mechanism or flexible releasing device, can adopt other version, realize same technique effect.For example, bending mechanism also can not adopt gear cited in the embodiment of the invention, the fit system of gear ring, directly adopts the two halves structure that articulates each other, through limited block turned position is between the two limited, and can realize the bending of body equally.And flexible releasing device also can be realized through the mode that spring-like, alignment pin and locating slot cooperatively interact.