CN201209606Y

CN201209606Y - Expanding device of telescoping rod

Info

Publication number: CN201209606Y
Application number: CNU2008201162056U
Authority: CN
Inventors: 赖信元
Original assignee: FUGUO INDUSTRY Co Ltd
Current assignee: FUGUO INDUSTRY Co Ltd
Priority date: 2008-05-15
Filing date: 2008-05-15
Publication date: 2009-03-18
Anticipated expiration: 2018-05-15

Abstract

The utility model relates to an expansion device for a telescopic rod, which contains a driving piece, a driven piece and an expansion piece; wherein, the driving piece is provided with a fixed part which is fixedly arranged in an inner pipe fitting, a driving screw rod which is arranged in an outer pipe fitting in an extension way and a fixed cone block which is provided with a first conical face; the driven piece is screwed at the driving screw rod and provided with a second conical face; the first conical face and the second conical face are opposite; and the expansion piece is provided with a first cone part for the nesting and the positioning of the fixed cone block and a second cone part for the nesting of the driven piece. The driven piece is driven by the driving screw rod to make displacement relative to the fixed cone block, and controls the expansion piece to be expanded and fixed in the outer pipe fitting.

Description

The extension fixture of flexible rod

Technical field

The utility model relates to a kind of flexible rod, particularly relates to a kind of extension fixture that obtains fixing flexible rod for the flexible back of flexible rod.

Background technique

As shown in Figure 1, existing a kind of can regulate is used the adjustable rod (No. 03803006.3 patent application case of the People's Republic of China (PRC)) of length, comprise an outer tube 1, an interior pipe 2 and an extension fixture 3 that is installed in this outer tube 1 and is somebody's turn to do interior pipe 2 socket places that is located in this outer tube 1, this extension fixture 3 has a fixed block 4 that is fixed on pipe 2 in this, a screw rod 5 that is installed in this fixed block 4, an inner member 6 and an expansion member 7 that is set in these inner member 6 outsides that is screwed on this screw rod 5, this inner member 6 has a conical surface portion 601 and two fins 602 that protruded by this conical surface portion 601, and this expansion member 7 has one and is set in the cone hole part 701 of this conical surface portion 601 and the conduit 702 of two the described fin of confession 602 nested location.When this outer tube 1 relatively rotates with interior pipe 2, utilize this inner member 6 to link with fin 602 and this expansion member 7, and this inner member 6 moves axially along this screw rod 5, makes 6 pairs of these expansion member of this inner member 7 produce and supports, and make this outer tube 1 produce fixing with respect to pipe in this 2.

Though this adjustable rod utilizes this extension fixture 3 to reach and regulates use length and regulate back generation immobilization efficiencies,, only produce and support with 6 pairs of these expansion member of this inner member 7, not only service speed is slower, and supports fixing being limited in scope, and this outer tube 1 is not good with the fixed effect of interior pipe 2.

Again as shown in Figure 2, another kind of adjustable rod (U.S. Patent Publication No. 2006/0204322A1 case), also comprise an outer tube 1 ', an interior pipe 2 ' and an extension fixture 3 ' that is installed in this outer tube 1 ' and is somebody's turn to do interior pipe 2 ' socket place that is located in this outer tube 1 ', this extension fixture 3 ' has a fixed block 4 ' that is installed in pipe 2 ' in this, a screw rod 5 ' that is installed in this fixed block 4 ', be screwed on one first of this screw rod 5 ' awl piece 6 ' with one second bore piece 8 ' and one be set in this first, plug tap piece 6 ', 8 ' outside expansion member 7 ', this screw rod 5 ' has Hand of spiral opposite one first screw section 501 ' and one second screw section 502 ', this is first years old, plug tap piece 6 ', 8 ' be screwed on respectively this first, two screw sections 501 ', on 502 ', and one first conical surface 601 ' and one second conical surface 801 ' of respectively having reversed dip, this expansion member 7 ' have supply respectively this first, plug tap piece 6 ', 8 ' nested first, two taper holes 701 ', 702 '.When drive this outer tube 1 ' with should in pipe 2 ' when relatively rotating, drive simultaneously this first and second bore piece 6 ', 8 ' convergence or away from, and reach the rapid adjustment purpose.If but this adjustable rod this screw rod 5 ' is made with metal material, then have the puzzlement of this first and second screw section 501 ', 502 ' processing inconvenience, if plastic cement material is made, though can reduce cost, intensity is relatively poor.

The model utility content

The purpose of this utility model is but a kind of rapid adjustment to be provided and to support the extension fixture of the flexible rod that effect is firm, intensity is good.

The extension fixture of the utility model flexible rod, this flexible rod has an outer tube member and one and is located in the interior pipe fitting of this outer tube member inside along an axis, and this extension fixture comprises the actuator, a driven member and the expanding piece that is set in this actuator and this driven member that is screwed on this actuator that are installed in pipe fitting in this.This actuator has a fixing part that is installed in pipe fitting in this, one and is installed in this fixing part outside and corresponding to drive screw and a fixed cone piece that is installed between this drive screw and this fixing part of this outer tube member along this axis, and this fixed cone piece has one by first conical surface that a end that should the drive screw end is enlarged gradually towards the other end of this correspondence fixing part.This driven member is to be screwed on this drive screw and corresponding to this outer tube member, and be positioned at this fixed cone piece one side, and has one second conical surface, this second conical surface be by to a end that should the fixed cone piece towards the other end that should the drive screw end is enlarged inclination gradually, and be reversed dip with this first conical surface.This expanding piece is to link corresponding to this outer tube member and with this driven member, and have a first end, one and be through to the endoporus of this second end and most by this first end along this axis along this axis the second end opposite, one and offer and be through to the conduit of this endoporus along this axis with this first end, this endoporus have one to should first end and for first tapering of this fixed cone block nesting location and one to should the second end and for the second nested tapering of this driven member.

The beneficial effects of the utility model are: utilize the fixed cone piece of this actuator and this drive screw affixed, and this first and second conical surface is opposite, make this driven member with respect to this fixed cone piece produce convergence or away from the time, this expanding piece produces expanded support or contraction, rapid adjustment and to support effect firm not only, this actuator also has the good effect of intensity.

Description of drawings

Fig. 1 is the combination section of existing a kind of adjustable tube;

Fig. 2 is the combination section of existing another kind of adjustable tube;

Fig. 3 is the three-dimensional exploded view of a preferred embodiment of the utility model;

Fig. 4 is the combination section of the above-mentioned preferred embodiment of the utility model, illustrates that an outer tube member is the state of can adjusting with respect to an interior pipe fitting;

Fig. 5 is the cross-sectional schematic of being got along the straight line V-V among Fig. 4;

Fig. 6 is the view that is similar to Fig. 4, and pipe fitting relatively rotates and makes an expanding piece be support state in this outer tube member being described and being somebody's turn to do.

Embodiment

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

As shown in Figure 3, extension fixture 200 preferred embodiments of the utility model flexible rod 100, this flexible rod 100 has an outer tube member 110 and an interior pipe fitting 120 that is located in these outer tube member 110 inside along an axis L.This extension fixture 200 comprises an actuator that is installed in pipe fitting 120 in this 10, one and is screwed on driven member 20 on this actuator 10 and one and is set in expanding piece 30 on this actuator 10 and this driven member 20.

This actuator 10 has a fixing part that is installed in pipe fitting 120 side inside in this 11, one and is installed in these fixing part 11 outsides and is installed in the fixed cone piece 13, one and these fixing part 11 opposite stopper 14 and bumps 15 that are convexly equipped with towards this fixed cone piece 13 by this stopper 14 that are provided with and are installed in these drive screw 12 ends of this

drive screw

12 and 11 of this fixing parts corresponding to the drive screw 12 of this outer tube member 110, one along this axis L.This fixed cone piece 13 have one by to a end that should stopper 14 towards this first conical surface 131 that the other end that should fixing part 11 is enlarged gradually.

This driven member 20 is to be screwed on this drive screw 12 and corresponding to this outer tube member 110, and, and have fin 22 that one second conical surface 21, two pairs radially extend outwardly by this second conical surface 21 and one and be convexly equipped with in a side end face and support the metal projection 23 that only is positioned at this bump 15 between 14 of this fixed cone piece 13 and this stoppers.This second conical surface 21 be by to a end that should fixed cone piece 13 towards the other end that should stopper 14 is enlarged inclination gradually, and be reversed dip with this first conical surface 131.

This expanding piece 30 is to link corresponding to this outer tube member 110 and with this driven member 20, and has a first end 31, one along the opposite the second end of this axis L and this first end 31 32, endoporus 33 and the two pairs of conduits 34 of offering and be through to this endoporus 33 along this axis L that are through to this second end 32 by this first end 31 along this axis L.This endoporus 33 have one to should first end 31 and for first tapering 331 of these fixed cone piece 13 nested location and one to should the second end 32 and for the second nested tapering 332 of this driven member 20.The lateral openings of every pair of conduit 34 is separately positioned on this first and

second end

31,32, utilize the different openings direction of described conduit 34, this first and

second end

31,32 can be strutted and is nested in respectively on this fixed cone piece 13 and this driven member 20, and make described fin 22 difference inlay cards in the conduit 34 of these expanding piece 30 correspondences.

Fig. 4 and shown in Figure 5 for another example, when whole assembly is finished, the mutual socket of opposed end of this outer tube member 110 and interior pipe fitting 120, and this actuator 10 utilize this fixing part 11 with should in pipe fitting 120 affixed, 20 of this driven members are arranged on this drive screw 12 with respect to this fixed cone piece 13.And, this driven member 20 drives when being subjected to this drive screw 12, during along this stopper 14 of this axis L displacement convergence, utilizing this metal projection 23 to support ends in these bump 15 1 sides, make this driven member 20 obtain spacing along this axis L, and prevent this expanding piece 30 from being continued to drive by this driven member 20 and with the opposing end surface excessive friction of this stopper 14, even cause stuckly, and cause next time operation turn-off smoothly.

And for example shown in Figure 6, when this outer tube member 110 of operation relatively rotates with interior pipe fitting 120, this drive screw 12 can drive this driven member 20 and produce convergence along axis L with respect to this fixed cone piece 13, and utilize 21 pairs of these second taperings of this second conical surface 332 to produce the effect that supports, first conical surface 131 also produces this first tapering 331 simultaneously and compels support, supports to be fixed in this outer tube member 110 with making these first and

second end

31,32 packings.

On the contrary, when this outer tube member 110 and interior pipe fitting 120 oppositely relatively rotate, drive again this driven member 20 with respect to this fixed cone piece 13 away from, and revert back to the pine oil state of Fig. 4, can adjust pipe fitting 120 and these outer tube member 110 collapsing lengths in this.

Therefore, extension fixture 200 of the present utility model, utilize this fixed cone piece 13 to be fixedly arranged on this drive screw 12 1 sides, and operation should in pipe fitting 120 drive these driven members 20 with respect to this fixed cone piece 13 produce convergences or away from, making 30 pairs of these outer tube members of this expanding piece 110 produce supports or pine oil, not only reach to regulate to use length and regulate the back and produce immobilization efficiencies, moreover, utilize first of this expanding piece 30, two

ends

31,32 simultaneously by this fixed cone piece 13, driven member 20 supports, make this expanding piece 30 and this outer tube member 110 produce big fixed range, the fixed effect of this outer tube member 110 is good, and service speed is also very fast.And utilize this drive screw 12 and this fixed cone piece 13, fixing part 11 one-body molded, this driven member 20 is after spiral shell is located on this drive screw 12, and in these drive screw 12 terminal one-body molded this stoppers 14 that have, whole structural strength is good again.

What deserves to be mentioned is, this driven member 20 utilizes this metal projection 23 and this bump 15 to conflict, and makes this driven member 20 produce the location with respect to this stopper 14, avoids driving this expanding piece 30 and produces excessive friction with respect to this stopper 14, even stuck, can operate smoothly and use to guarantee flexible rod.

Claims

1. the extension fixture of a flexible rod, this flexible rod have an outer tube member and one and are located in the interior pipe fitting of this outer tube member inside along an axis, and this extension fixture comprises an actuator, a driven member and an expanding piece; It is characterized in that:

This actuator, have a fixing part that is installed in pipe fitting in this, one and be installed in this fixing part outside and corresponding to drive screw and a fixed cone piece that is installed between this drive screw and this fixing part of this outer tube member along this axis, this fixed cone piece has one by first conical surface that a end that should the drive screw end is enlarged gradually towards the other end of this correspondence fixing part;

This driven member, be to be screwed on this drive screw and corresponding to this outer tube member, and be positioned at this fixed cone piece one side, and has one second conical surface, this second conical surface be by to a end that should the fixed cone piece towards the other end that should the drive screw end is enlarged inclination gradually, and be reversed dip with this first conical surface;

This expanding piece, be to link corresponding to this outer tube member and with this driven member, and have a first end, one and be through to the endoporus of this second end and most by this first end along this axis along this axis the second end opposite, one and offer and be through to the conduit of this endoporus along this axis with this first end, this endoporus have one to should first end and for first tapering of this fixed cone block nesting location and one to should the second end and for the second nested tapering of this driven member.

2. the extension fixture of flexible rod as claimed in claim 1, it is characterized in that: this driven member also has two pairs of fins that radially extended outwardly by this second conical surface, and described fin inlay card is in two pairs of conduits of this expanding piece correspondence.

3. the extension fixture of flexible rod as claimed in claim 2, it is characterized in that: the lateral openings of two pairs of conduits of this expanding piece is separately positioned on this first and second end.

4. the extension fixture of flexible rod as claimed in claim 3, it is characterized in that: this actuator also has an opposite stopper that is provided with and is installed in this drive screw end with this fixing part.

5. the extension fixture of flexible rod as claimed in claim 4, it is characterized in that: this actuator also has a bump that is convexly equipped with towards this driven member by this stopper, and this driven member also has one and supports the metal projection that only is positioned at this bump.

6. the extension fixture of flexible rod as claimed in claim 1, it is characterized in that: this actuator also has an opposite stopper and a bump that is convexly equipped with towards this driven member by this stopper that is provided with and is installed in this drive screw end with this fixing part, and this driven member also has one and supports the metal projection that only is positioned at this bump.