CN201386767Y

CN201386767Y - Improved structure of electric telescopic pipe

Info

Publication number: CN201386767Y
Application number: CN200920301872U
Authority: CN
Inventors: 蔡逢春
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-02
Filing date: 2009-04-02
Publication date: 2010-01-20
Anticipated expiration: 2019-04-02

Abstract

The utility model relates to an improved structure of an electric telescopic pipe, which comprises a fixed rod, an adapter ring, a telescopic rod, a body and the like, wherein, a plurality of positioning devices are arranged on nuts which are arranged at the ends of the telescopic rod, each positioning device comprises an elastic component and a roller, a roller bearing is built in the adapter ring, two end points of the roller bearing respectively use a spacing ring to be combined with a quill thrust bearing, and the two quill thrust bearings are both arranged in the adapter ring, thereby reducing the friction between the telescopic rod and the fixed rod when going forward; the utilization of the elastic components for pushing all the rollers to be closely near to the inner wall of the fixed rod can average the stress of all the rollers and achieve the purpose of going forward stably; and the diameter of the fixed rod is the same with the outer diameter of the body, thereby changing the electric telescopic pipe to two sections from original three sections and having the advantages of saving die cost and material cost, realizing large internal space, being capable of increasing an electrical control mechanism, having simple shape and being convenient to install.

Description

Electric expansion pipe structure-improved

Technical field:

The utility model relates to a kind of electric expansion pipe.

Background technique:

Existing electric expansion pipe, as TaiWan, China patent announcement number M347453 number novel patent, the flexible rod that is provided with in it is three joints, makes the inner space narrow and small, and has other problems, and is too high as cost, noise and shake excessively uses inconvenience etc.

The model utility content:

Technical problem to be solved in the utility model is: at above-mentioned the deficiencies in the prior art, provide a kind of generation that reduces noise, and promote thrust, improve the electric expansion pipe structure-improved of usefulness.

In order to solve the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of electric expansion pipe structure-improved, and it comprises rear end seat, body, gear-box, adapter ring, at least two pads, ball bearing, screw rod, fixing rod, flexible rod, reaches the front end seat; This body is a hollow tube, and one end and this rear end seat screw togather mutually; This gear-box places in this body; The end in addition of this adapter ring and this body screws togather mutually; This two pad places the two ends of this adapter ring respectively; This ball bearing places in this adapter ring, and an end of this screw rod is connected with this gear-box; This fixing rod is a hollow tube, and the one end is bolted in this adapter ring, and this flexible rod is a hollow tube, and the one end is provided with a nut, and this screw rod and this nut screw togather mutually; This front end seat is screwed together in the end in addition of this flexible rod; Be characterized in: the two-end-point of described ball bearing is used a spacer ring and a needle roller thrust bearing closing respectively, and these two needle roller thrust bearings all place in this adapter ring; One end of this screw rod is connected with this gear-box after passing this ball bearing and this needle roller thrust bearing; This fixing rod is identical with the external diameter of this body, and making this electric expansion pipe is two joint structures; This nut is provided with several positioning devices, and this positioning device comprises at least one elastic component and at least one ball, and this ball places between this elastic component and this fixing rod.

So, this structure is provided with several positioning devices in nut, when reducing this flexible rod by this and advancing and the friction of this fixing rod, make it when moving with screw rod, to reduce to minimumly with the frictional force of fixing rod, and simultaneously, utilize elastic component to promote the inwall that each ball is close proximity to this fixing rod, can make the mean forced of each ball, reach stable purpose of advancing; Simultaneously, because its frictional force reduces, so gear-box can use the purpose that reaches promotion than low thrust; And, place the two-end-point of the ball bearing in the adapter ring all to use a spacer ring and a needle roller thrust bearing closing, these two needle roller thrust bearings also all place in the adapter ring, to deal with thrust and pulling force; In addition, fixing rod and the external diameter of body are made as identical, can make the electric expansion pipe, have and to save mould expense and material cost, inner space and can increase electrical control mechanism and external form greatly and succinctly be convenient to the advantage of installing from three saving and become two joints originally.

For further understanding being arranged, so it is as follows to disclose a preferred implementation to the utility model.Cooperate graphic, figure number, with constitution content of the present utility model and the effect reached describes in detail as after.

Description of drawings:

Fig. 1 is an exploded view of the present utility model.

Fig. 2 is an enforcement schematic representation of the present utility model.

Label declaration:

100 ...

electric expansion pipe

1,3,5,30 ... pad

2,25 ... C type clasp 4 ... ball

6 ... E type clasp 7 ... oil sealing base

8 ... body 9 ... the front end seat

10 ... rear end seat 11 ... adapter ring

12

... screw rod

13,14 ... spacer ring

15 ... the collar 16 ... flexible rod

17 ... fixing rod 18 ... hexagonal pod screw

19 ... screw 20 ... nut

21 ... ball bearing 22 ... needle roller thrust bearing

23 ... O type ring 24 ... rubber ring

26 ... pressing plate 27 ... pad

28 ... gear-box 29 ... elastic component

40 ... positioning device 200 ... the electric expansion pipe

Embodiment:

See also shown in Figure 1ly, electric expansion tubular construction 100 of the present utility model comprises rear end seat 10, body 8, gear-box 28, adapter ring 11, at least two pads 27, needle roller thrust bearing 22, ball bearing 21, screw rod 12, fixing rod 17, flexible rod 16, front end seat 9 and several positioning devices 40; Wherein, this body 8 is a hollow tube, and an end of body 8 and this rear end seat 10 screw togather mutually, carry out secure bond by this rearward end 10 and other article; This gear-box 28 places in this body 8; The end in addition of one end of this adapter ring 11 and this body 8 screws togather mutually, can simultaneously this gear-box 28 be fixed in this body 8; This two pad 27 places the two ends of this adapter ring 11 respectively, can reduce the noise that is sent when rotating by this, and wherein, described pad 27 can be the rubber material or other rubber-like material is formed, to have the better sound-absorbing and the effect of damping.

Wherein, this needle roller thrust bearing 22 places in this adapter ring 11, and this ball bearing 21 also places in this adapter ring 11, and the two ends of this ball bearing 21 all respectively utilize 13,14 and two these needle roller thrust bearing 22 closings of a spacer ring; One end of this screw rod 12 passes this ball bearing 21 and this needle roller thrust bearing 22 backs are connected with this gear-box 28, rotates so this gear-box 28 can directly drive this screw rod 12; This fixing rod 17 is a hollow tube, the one end is bolted in the other end of this adapter ring 11, and this fixing rod 17 is identical with the external diameter of body 8, this improvement can make the electric expansion bar become two joints from originally three joints, has can save mould expense and material cost, inner space and can increase electrical control mechanism and external form greatly and succinctly be convenient to the advantage of installing; This flexible rod 16 also is a hollow tube, and the one end is provided with a nut 20, and above-mentioned screw rod 12 can screw togather mutually with this nut 20, and when this screw rod 12 rotated, this nut 20 can be advanced with respect to this screw rod 12; This front end seat 9 is screwed together in the end in addition of this flexible rod 16, in order to combine with other article; Wherein, each positioning device 40 is located on this nut 20, when reducing this flexible rod 16 by this and advancing, and the friction of this nut 20 and this fixing rod 17, this positioning device 40 comprises at least one elastic component 29 and at least one ball 4, and this ball 4 places between this elastic component 29 and this fixing rod 17; The electric expansion pipe of forming by above-mentioned each assembly 1 can drive this screw rod 12 rotations with the running of this gear-box 28, and the flexible rod 16 in this electric expansion pipe 1 promptly can outwards or inwardly be advanced.

Wherein, this positioning device 40 is embedded on this nut 20, and make this ball 4 partly outer rims protrude from the surface of this nut 20, and can touch with the inwall of this fixing rod 17 to; By this, make that each positioning device 40 is stressed even, so this flexible rod 16 is stablized smooth and easy advancing.Again, utilize the smooth surface of ball 4, make this flexible rod 16 when advancing, reduce the friction of this nut 20 and these fixing rod 17 inwalls, reduce resistance.

Wherein, this elastic component 29 can be assemblies such as spring, all can reach the stressed purpose of uniform distribution.In present embodiment, be to utilize four positioning devices 40 on average to put.

Again, this gear-box 28 comprises at least one motor and at least one gear train (not shown), produces this screw rod 12 of motivational drive by this and rotates.

Other part among Fig. 1 comprises

pad

1,3,5,30,

C type clasp

2,25, E type clasp 6, oil sealing base 7, the collar 15, hexagonal pod screw 18, screw 19, O type ring 23, rubber ring 24, pressing plate 26 etc., common knowledge for constructed field, replace from part that can similar functions,, all be considered as impartial variation the of the present utility model only if its effect is identical.

Consult Fig. 2 again, wherein a kind of purposes of this electric expansion pipe 200 is the open and close that is applied to door and window, electric expansion pipe 200 after improvement can become two joints by three joints, has can save mould expense and material cost, inner space and can increase electrical control mechanism and external form greatly and succinctly be convenient to the advantage of installing.

Claims

1. electric expansion pipe structure-improved, it comprises rear end seat, body, gear-box, adapter ring, at least two pads, ball bearing, screw rod, fixing rod, flexible rod, and front end seat; This body is a hollow tube, and one end and this rear end seat screw togather mutually; This gear-box places in this body; The end in addition of this adapter ring and this body screws togather mutually; This two pad places the two ends of this adapter ring respectively; This ball bearing places in this adapter ring, and an end of this screw rod is connected with this gear-box; This fixing rod is a hollow tube, and the one end is bolted in the other end of this adapter ring, and this flexible rod is a hollow tube, and the one end is provided with a nut, and this screw rod and this nut screw togather mutually; This front end seat is screwed together in the end in addition of this flexible rod; It is characterized in that: the two-end-point of described ball bearing is used a spacer ring and a needle roller thrust bearing closing respectively, and these two needle roller thrust bearings all place in this adapter ring; One end of this screw rod is connected with this gear-box after passing this ball bearing and this needle roller thrust bearing; This fixing rod is identical with the external diameter of this body, and making this electric expansion pipe is two joint structures; This nut is provided with several positioning devices, and this positioning device comprises at least one elastic component and at least one ball, and this ball places between this elastic component and this fixing rod.

2. electric expansion pipe structure-improved as claimed in claim 1, it is characterized in that: described positioning device is embedded on this nut, and this ball part outer rim protrudes from this nut.

3. electric expansion pipe structure-improved as claimed in claim 2 is characterized in that: described elastic component is a spring.

4. as each described electric expansion pipe structure-improved in the claim 1 to 3, it is characterized in that: described gear-box comprises at least one motor and at least one gear train.

5. electric expansion pipe structure-improved as claimed in claim 4 is characterized in that: described positioning device has four at least.

6. electric expansion pipe structure-improved as claimed in claim 1, it is characterized in that: described pad is made by rubber.