CN105257643A

CN105257643A - Equilateral-triangle-shaped carbon fiber telescopic rod

Info

Publication number: CN105257643A
Application number: CN201510859654.4A
Authority: CN
Inventors: 谢正春; 倪受春; 徐先洋; 支新涛; 卜祥风
Original assignee: Chuzhou University
Current assignee: Chuzhou University
Priority date: 2015-11-26
Filing date: 2015-11-26
Publication date: 2016-01-20
Anticipated expiration: 2035-11-26
Also published as: CN105257643B

Abstract

The invention discloses an equilateral-triangle-shaped carbon fiber telescopic rod. A single rod is in a shape of an equilateral triangular prism and comprises an inner guide pipe located at the front end, a connecting pipe located in the middle and an outer guide pipe located at the tail end. The inner guide pipe and the connecting pipe are identical in appearance. The contour of the outer guide pipe is larger than that of the connecting pipe, and the outer guide pipe protrudes out of the outer surface of the connecting pipe. An inner guide pipe hole is smaller than a connecting pipe hole of the connecting pipe. The inner wall of the inner guide pipe hole protrudes out of the inner wall of the connecting pipe hole. The connecting pipe hole is identical with an outer guide pipe hole. The inner guide pipe, the inner guide pipe hole, the connecting pipe, the connecting pipe hole, the outer guide pipe and the outer guide pipe hole are coaxial. At least two single rods form the integral telescopic rod. According to the equilateral-triangle-shaped carbon fiber telescopic rod, the equilateral triangle structure is adopted, the fit clearance uniformity between the inner layer and the outer layer is good, the coaxiality is high, and stretching and retracting are comparatively stable; the radial positions of the carbon fiber rod in the stretching and retracting process are consistent, the corresponding resistance is uniform, the straightness is high, and the equilateral triangle carbon fiber telescopic rod can be widely applied to the fields of automatic telescopic arms, automatic parallel tension rods, automatic side hook hanging rods, painting and calligraphy paper tension rods and the like.

Description

A kind of equilateral triangle carbon fiber flexible rod

Technical field

The present invention relates to carbon fiber bar product technical field, be specifically related to a kind of carbon fiber flexible rod.

Background technique

Flexible rod because of its can variation length, thus have application in a lot of fields.Carbon fiber flexible rod of the prior art is all the circular pipe of band tapering, and tapering is comparatively large, and are all fishing rod types, when multilayer tubing is inlayed, outer tube and internal layer are respectively managed and can mutually be rotated.The pull-out length of the gap between tube and tube and bar is inversely proportional to, and produces self-locking when being stretched to the longest.The shortcoming of this conventional telescopic bar is, also exists to inlay between pipe the inconsistent and axial resistance in diametrically position and coaxality changes with pull-out length in telescopic process, thus has slackened its effect, and constrains its application in a wider context.

Summary of the invention

The present invention is directed to the defect of prior art, provide that a kind of structure is simple, reliable and stable, relative position remains consistent equilateral triangle carbon fiber flexible rod.

For solving the problems of the technologies described above, the present invention adopts following technological scheme: a kind of equilateral triangle carbon fiber flexible rod, flexible rod adopts carbon fiber to make, be made up of some scalable single tubes nested successively from outside to inside, each single tube is of similar shape, it is characterized in that: the profile of described single tube is triangular prism shape, comprise the outer duct of the inner catheter being positioned at front end, middle adapter and tail end, the profile of inner catheter is consistent with the profile of adapter, the profile of outer duct is greater than the profile of adapter, and protrudes from the contoured surface of adapter; The inner catheter hole of inner catheter is less than the adapter hole of adapter, and the inwall in inner catheter hole protrudes from the inwall in adapter hole, and adapter hole is consistent with the outer duct hole of outer duct; Inner catheter, inner catheter hole, adapter, adapter hole, outer duct and outer duct hole are coaxial; At least two single tubes form flexible rod entirety, the inner catheter hole of outer field inner catheter coordinates with the adapter profile of internal layer is dynamic, the profile of the outer duct of internal layer coordinates with the adapter hole of outer field adapter is dynamic, and when internal layer is stretched to caudal end, its outer duct is stuck in the hole wall place in the inner catheter hole of its outer one deck.

Further, the cross section of described single tube is equilateral triangle, each angle of flexible rod and its axis keeping parallelism in telescopic process.

Further, the inside and outside of corner portion of described single tube is arc transition, adopts fillet structure.

Further, have gap at adjacent two single tubes to position, between this gap with adjacent two single tubes, the slight void of dynamic cooperation place is communicated with, and the high pressure draught produced in single tube fore and aft motion is dredged by gap, minimizing relative movement resistance.

The present invention is by adopting the structure of equilateral triangle, and its inner. layers and outer field matching gap high conformity, coaxality be high, it is relative steady to stretch; Consistent, the corresponding drag uniform of the radial position of carbon fiber bar in telescopic process, straightness accuracy are high, can be widely used in automatic telescopic arm, auto-paralleling stretching bar, the automatically field such as side hook boom stick and china picture-character paper stretch-draw boom product.

Accompanying drawing explanation

Fig. 1 is single tube longitudinal profile structural representation of the present invention;

Fig. 2 is that cross-sectional view is looked on a single tube left side of the present invention;

Fig. 3 is multitube composite structure schematic diagram of the present invention;

Fig. 4 is that cross-sectional view is looked on a multitube left side of the present invention.

In figure, 1 is inner catheter, and 2 is adapter, and 3 is outer duct, and 4 is outer, and 5 is internal layer, and 6 is gap, and 7 is inner catheter hole, and 8 is adapter hole, and 9 is outer duct hole, and 10 is the inside and outside of corner portion.

Embodiment

In the present embodiment, with reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, described equilateral triangle carbon fiber flexible rod, flexible rod adopts carbon fiber to make, and be made up of some scalable single tubes nested successively from outside to inside, each single tube is of similar shape; The profile of described single tube is triangular prism shape, comprise the outer duct 3 of the inner catheter 1 being positioned at front end, middle adapter 2 and tail end, the profile of inner catheter 1 is consistent with the profile of adapter 2, and the profile of outer duct 3 is greater than the profile of adapter 2, and protrudes from the contoured surface of adapter 2; The inner catheter hole 7 of inner catheter 1 is less than the adapter hole 8 of adapter, and the inwall in inner catheter hole 7 protrudes from the inwall in adapter hole 8, and adapter hole 8 is consistent with the outer duct hole 9 of outer duct 3; Inner catheter 1, inner catheter hole 7, adapter 2, adapter hole 8, outer duct 3 and outer duct hole 9 are coaxial; At least two single tubes form flexible rod entirety, the inner catheter hole of inner catheter of outer 4 is moved with the adapter profile of internal layer 5 and is coordinated, the profile of the outer duct of internal layer 5 coordinates with the adapter hole of the adapter of outer 4 is dynamic, and when internal layer 5 is stretched to caudal end, its outer duct is stuck in the hole wall place in the inner catheter hole of its outer one deck.

The cross section of described single tube is equilateral triangle, each angle of flexible rod and its axis keeping parallelism in telescopic process.

The inside and outside of corner portion 10 of described single tube is arc transition, adopts fillet structure.

Have gap 6 at adjacent two single tubes to position, between this gap 6 with adjacent two single tubes, the slight void of dynamic cooperation place is communicated with, and the high pressure draught produced in single tube fore and aft motion is dredged by gap, minimizing relative movement resistance.

Below the present invention be described in detail, the above, be only the preferred embodiment of the present invention, when not limiting the application's practical range, namely allly does impartial change according to the application's scope and modify, all should still belong in covering scope of the present invention.

Claims

1. an equilateral triangle carbon fiber flexible rod, be made up of some scalable single tubes nested successively from outside to inside, each single tube is of similar shape, it is characterized in that: the profile of described single tube is triangular prism shape, comprise the outer duct of the inner catheter being positioned at front end, middle adapter and tail end, the profile of inner catheter is consistent with the profile of adapter, and the profile of outer duct is greater than the profile of adapter, and protrudes from the contoured surface of adapter; The inner catheter hole of inner catheter is less than the adapter hole of adapter, and the inwall in inner catheter hole protrudes from the inwall in adapter hole, and adapter hole is consistent with the outer duct hole of outer duct; Inner catheter, inner catheter hole, adapter, adapter hole, outer duct and outer duct hole are coaxial; At least two single tubes form flexible rod entirety, the inner catheter hole of outer field inner catheter coordinates with the adapter profile of internal layer is dynamic, the profile of the outer duct of internal layer coordinates with the adapter hole of outer field adapter is dynamic, and when internal layer is stretched to caudal end, its outer duct is stuck in the hole wall place in the inner catheter hole of its outer one deck.

2. equilateral triangle carbon fiber flexible rod according to claim 1, is characterized in that: the cross section of described single tube is equilateral triangle.

3. equilateral triangle carbon fiber flexible rod according to claim 2, is characterized in that: the inside and outside of corner portion of described single tube is arc transition, adopts fillet structure.

4. equilateral triangle carbon fiber flexible rod according to claim 1, it is characterized in that: to position, there is gap at adjacent two single tubes, between this gap with adjacent two single tubes, the slight void of dynamic cooperation place is communicated with, and the high pressure draught produced in single tube fore and aft motion is dredged by gap.