阅读说明：本技术 一种修剪树枝用伸缩剪具的伸缩结构 (Telescopic structure of telescopic scissors for pruning branches ) 是由 徐柳先 于 2020-04-13 设计创作，主要内容包括：本发明公开了一种修剪树枝用伸缩剪具的伸缩结构,包括外支撑管和内插管,内插管插接在外支撑管内,外支撑管的下端成型有截面呈“凵“字形的导轨槽,内插管的下端成型有矩形的导向条,导向条插设在支撑管的导轨槽内；所述外支撑管前端的导轨槽内插设有横向的第一滚轴,第一滚轴的两端铰接在导轨槽上并位于导向条的下侧；所述内插管后端的内壁上成型有贯穿内插管下端外壁的插槽,插槽内插接有横向的第二滚轴,第二滚轴的两端铰接在内插管上,内插管的前端插设有若干组相对并呈横向的第三滚轴；所述内插管的后端抵靠在挡块上,挡块插接固定在外支撑管内。(The invention discloses a telescopic structure of a telescopic scissors for pruning branches, which comprises an outer supporting tube and an inner inserting tube, wherein the inner inserting tube is inserted in the outer supporting tube, a guide rail groove with the section being in the shape of L is formed at the lower end of the outer supporting tube, a rectangular guide strip is formed at the lower end of the inner inserting tube, the guide strip is inserted in the guide rail groove of the supporting tube, a transverse first rolling shaft is inserted in the guide rail groove at the front end of the outer supporting tube, two ends of the first rolling shaft are hinged on the guide rail groove and positioned at the lower side of the guide strip, an inserting groove penetrating through the outer wall at the lower end of the inner inserting tube is formed on the inner wall at the rear end of the inner inserting tube, a transverse second rolling shaft is inserted in the inserting groove, two ends of the second rolling shaft are hinged on the inner inserting tube, a plurality of groups of opposite and transverse third rolling shafts are inserted at the front end of the inner inserting tube, and the rear end of the.)

1. A telescopic structure of a telescopic scissors for pruning branches comprises an outer supporting tube (1) and an inner inserting tube (2), wherein the inner inserting tube (2) is inserted into the outer supporting tube (1), the telescopic structure is characterized in that a guide rail groove (12) with a section being L is formed at the lower end of the outer supporting tube (1), a rectangular guide strip (21) is formed at the lower end of the inner inserting tube (2), the guide strip (21) is inserted into the guide rail groove (12) of the supporting tube (1), a transverse first roller (3) is inserted into the guide rail groove (12) at the front end of the outer supporting tube (1), two ends of the first roller (3) are hinged to the guide rail groove (12) and located at the lower side of the guide strip (21), an inserting groove (22) penetrating through the outer wall at the lower end of the inner inserting tube (2) is formed on the inner wall at the rear end of the inner inserting tube (2), a transverse second roller (4) is inserted into the inserting groove (22), two ends of the second roller (4) are hinged to the inner inserting tube (2), a plurality of inserting holes (2) are inserted into the outer inserting tube (2), a plurality of inserting holes (8) are formed on the outer inserting tube (1), a plurality of inserting holes (8) and a plurality of inserting holes (8) are formed on the inner inserting tube (1), a plurality of inserting holes (8) and a plurality of inserting holes (8) which are arranged on the outer inserting holes (8), a plurality of inserting holes (8) which are arranged, a plurality of inserting holes which are arranged in the inner inserting holes (8), a plurality of inserting holes (8) which are arranged on the outer inserting holes (8), a plurality of inserting holes which are arranged, a plurality of the outer inserting holes (.

2. The telescopic structure of the telescopic scissors for pruning branches as claimed in claim 1, wherein: the diameter of the outer wall of the inner inserting pipe (2) is equal to that of the inner wall of the outer supporting pipe (1), and the distance between the inner walls of the two opposite sides of the guide rail groove (12) on the outer supporting pipe (1) is equal to the width of the guide strip (21) on the inner inserting pipe (2).

3. The telescopic structure of the telescopic scissors for pruning branches as claimed in claim 2, wherein: the front end of the inner inserting tube (2) extends out of the outer supporting tube (1), the third rolling shafts (6) are distributed on the front side of the outer supporting tube (1), mounting holes of the third rolling shafts (6) are formed in the side wall of the inner inserting tube (2), the mounting holes penetrate through the outer walls of the two sides of the inner inserting tube (2), and a connecting sleeve (9) is fixedly inserted and sleeved at the front end of the inner inserting tube (2).

4. The telescopic structure of the telescopic scissors for pruning branches as claimed in claim 1, wherein: a transverse guide roller (5) is inserted into the inner inserting tube (2) right above the second rolling shaft (4), and two ends of the guide roller (5) are hinged on the inner inserting tube (2).

5. The telescopic structure of the telescopic scissors for pruning branches as claimed in claim 1, wherein: the lower end of the stop block (8) is molded with a convex block, the positioning insertion hole (81) is positioned on the convex block, and the convex block is inserted in the guide rail groove (12) of the outer support pipe (1).

6. The telescopic structure of the telescopic scissors for pruning branches as claimed in claim 1, wherein: the sum of the diameter of the first roller (3) and the diameter of the pull rope (10) is smaller than the distance from the lower end surface of the guide strip (21) on the inner inserting pipe (2) to the bottom surface of the inner side of the guide rail groove (12).

7. The telescopic structure of the telescopic scissors for pruning branches as claimed in claim 1, wherein: the guide groove (11) on the outer support tube (1) is parallel to the central axis of the outer support tube (1), and the width of the guide groove (11) is equal to the diameter of the thread section of the screw (7).

Technical Field

The invention relates to the technical field of garden machinery, in particular to a telescopic structure of a telescopic scissors for pruning branches.

Background

Trees are important components in garden construction, some trees in gardens grow thickly at present, the trees can affect buildings in gardens, branches on the trees need to be trimmed, a shearing tool with a long supporting rod is adopted in the existing trimming, the shearing tool is a pair of scissors for trimming, a handle at one end of each pair of scissors is installed at the top end of the long supporting rod, a pull rope is fixed to a handle at the other end of each pair of scissors, the pull rope is arranged on the long supporting rod and is parallel to the long supporting rod, a holding piece of a bicycle brake handle structure is fixed to the lower end of the long supporting rod, and the holding piece can pull the pull rope to achieve the operation of the scissors; however, the pair of scissors has the disadvantages that the pair of scissors is too long in length and inconvenient to store and carry; and is only suitable for pruning trees with higher height; therefore, the long support rod is designed into a telescopic rod to solve the problems, but the telescopic rod is required to be designed into a structure that the pull rope can be changed along with the change of the length of the telescopic rod.

Disclosure of Invention

The invention aims to provide a telescopic structure of a telescopic scissors for pruning branches aiming at the defects of the prior art, which can realize that a pull rope changes along with the change of the length of a telescopic rod; the use of the scissors is not affected.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a telescopic structure of a telescopic scissors for pruning branches comprises an outer supporting tube and an inner inserting tube, wherein the inner inserting tube is inserted in the outer supporting tube, a guide rail groove with the cross section being in the shape of L is formed at the lower end of the outer supporting tube, a rectangular guide strip is formed at the lower end of the inner inserting tube and is inserted in the guide rail groove of the supporting tube, a transverse first roller is inserted in the guide rail groove at the front end of the outer supporting tube, two ends of the first roller are hinged on the guide rail groove and positioned at the lower side of the guide strip, an inserting groove penetrating through the outer wall of the lower end of the inner inserting tube is formed in the inner wall at the rear end of the inner inserting tube, a transverse second roller is inserted in the inserting groove, two ends of the second roller are hinged on the inner inserting tube, a plurality of groups of third inner inserting rollers which are opposite and transverse are inserted at the front end of the inner inserting tube, the rear end of the inner inserting tube is abutted against the outer stopping block, a longitudinal inserting hole is formed at the lower end of the inner supporting tube, a pull rope is inserted between the first inserting groove and the third inserting groove, a plurality of inserting screws are inserted in the guide groove, and are distributed on the outer supporting tube.

Preferably, the diameter of the outer wall of the inner inserting tube is equal to the diameter of the inner wall of the outer supporting tube, and the distance between the inner walls of the two opposite sides of the guide rail groove on the outer supporting tube is equal to the width of the guide strip on the inner inserting tube.

Preferably, the front end of the inner insertion tube extends out of the outer support tube, the third rollers are distributed on the front side of the outer support tube, mounting holes for the third rollers are formed in the side wall of the inner insertion tube, the mounting holes penetrate through the outer walls of the two sides of the inner insertion tube, and a connecting sleeve is fixed to the front end of the inner insertion tube in a sleeved mode.

Preferably, a transverse guide roller is inserted into the inner insertion tube right above the second roller, and two ends of the guide roller are hinged to the inner insertion tube.

Preferably, the lower end of the stop block is formed with a convex block, the positioning insertion hole is positioned on the convex block, and the convex block is inserted into the guide rail groove of the outer support pipe.

Preferably, the sum of the diameter of the first roller and the diameter of the pull rope is smaller than the distance from the lower end surface of the guide strip on the inner insert tube to the bottom surface of the inner side of the guide rail groove.

Preferably, the guide groove on the outer support tube is parallel to the central axis of the outer support tube, and the width of the guide groove is equal to the diameter of the screw thread section.

The invention has the beneficial effects that: the adopted telescopic structure can realize that the pull rope changes along with the change of the length of the telescopic rod; the use of the scissors is not affected.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a side view of the present invention;

FIG. 4 is a schematic view of a half-section structure of the present invention.

In the figure: 1. an outer support tube; 11. a guide groove; 12. a guide rail groove; 2. inserting a tube; 21. a guide strip; 22. a slot; 3. a first roller; 4. a second roller; 5. a guide roller; 6. a third roller; 7. a screw; 8. a stopper; 81. positioning and inserting; 9. connecting sleeves; 10. and pulling a rope.

Detailed Description