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CN-224218974-U - Telescopic device

CN224218974UCN 224218974 UCN224218974 UCN 224218974UCN-224218974-U

Abstract

The present application relates to a telescopic device. The telescopic device comprises an inner tube extending along the axial direction, an outer tube movably sleeved on the outer side of the inner tube, a clamping sleeve arranged on the outer side of the inner tube and comprising a lantern ring and an abutting part extending from the lantern ring towards the fixing part, the fixing sleeve comprises a fixing part connected to the outer tube and a locking part at least partially sleeved on the periphery of the abutting part, the outer wall of the locking part is provided with external threads, the locking sleeve comprises a locking part positioned on the outer side of the fixing part, the inner wall of the locking part is provided with internal threads matched with the external threads, the clamping sleeve comprises a claw extending from the lantern ring away from the abutting part and a clamping groove positioned between the claw and the lantern ring, and the locking sleeve comprises a clamping part extending radially from the inner wall of the clamping sleeve and is clamped into the clamping groove. The application can improve the operation efficiency of the telescopic equipment and ensure the stability of the telescopic equipment.

Inventors

  • LI DONGZHI

Assignees

  • 江苏东成园林机械有限公司

Dates

Publication Date
20260512
Application Date
20250516

Claims (10)

  1. 1. A telescoping device, comprising: an inner tube extending in an axial direction; the outer tube is movably sleeved on the outer side of the inner tube; the clamping sleeve is arranged on the outer side of the inner tube and comprises a sleeve ring and an abutting part extending from the sleeve ring towards the fixing part; The fixing sleeve comprises a fixing part connected to the outer tube and a locking part at least partially sleeved on the periphery of the abutting part, and the outer wall of the locking part is provided with external threads; the locking sleeve comprises a locking part positioned at the outer side of the fixing part, and an inner thread matched with the outer thread is arranged on the inner wall of the locking part; The clamping sleeve is characterized by comprising a claw extending from the sleeve ring far away from the abutting part and a clamping groove positioned between the claw and the sleeve ring, wherein the locking sleeve comprises a clamping part extending radially from the inner wall of the locking sleeve, and the clamping part is clamped into the clamping groove.
  2. 2. The expansion device according to claim 1, wherein the engaging portion has a length smaller than that of the engaging groove in the axial direction.
  3. 3. The telescopic apparatus according to claim 1, wherein an outer diameter formed by the plurality of claws is larger than an inner diameter formed by the engaging portion in the lock housing.
  4. 4. A telescopic apparatus according to claim 1, wherein, The telescopic equipment further comprises a bushing, the bushing is connected with the inner pipe, an annular blocking surface is formed on the inner wall of the fixing part, the end part of the outer pipe is abutted to the annular blocking surface, and when the length of the telescopic equipment reaches the longest, the end part of the bushing is abutted to the annular blocking surface.
  5. 5. The telescopic device according to claim 4, wherein a limiting protrusion is arranged in the bushing, an inner tube limiting hole is formed in one end, close to the outer tube, of the inner tube, and the limiting protrusion is accommodated in the inner tube limiting hole.
  6. 6. The telescopic apparatus according to claim 1, wherein the abutment portion includes a plurality of wedge-shaped pieces, the plurality of wedge-shaped pieces being circumferentially disposed in contact with an outer side of the inner tube, a thickness of each of the wedge-shaped pieces decreasing in a direction approaching the outer tube.
  7. 7. The telescopic device according to claim 1, wherein an inner wall of the locking portion forms a tapered surface, and a receiving space is formed between the tapered surface and the inner tube, and an inner diameter of the receiving space decreases in a direction approaching the outer tube.
  8. 8. The telescopic device according to claim 1, wherein an inner pipe limiting groove is recessed inwards on the outer side of the inner pipe, a first limiting boss is arranged on the inner wall of the fixing sleeve, and the first limiting boss is clamped with the inner pipe limiting groove.
  9. 9. The telescopic device according to claim 4, wherein the outer tube is provided with an outer tube limiting groove, the outer tube limiting groove is arranged at one end of the outer tube, which is close to the fixing sleeve, and the annular blocking surface is provided with a second limiting boss which is clamped with the outer tube limiting groove.
  10. 10. The telescopic device according to claim 1, wherein: The fixing part comprises a first locking part and a second locking part which are extended from the peripheral wall of the fixing part at intervals, and a locking gap is formed between the first locking part and the second locking part; the first locking part is provided with a first locking hole, the second locking part is provided with a second locking hole, the first locking hole and the second locking hole correspond to each other, and one end of the outer tube, which is close to the fixing part, is provided with an outer tube limiting hole; The telescopic equipment further comprises a limiting piece, a first locking piece and a second locking piece, wherein an inserting hole is formed in the limiting piece, an inserting portion is formed in one end of the limiting piece, the limiting piece is arranged in the locking gap, the inserting portion penetrates through the outer tube limiting hole, and the first locking piece is used for sequentially penetrating through the first locking hole, the inserting hole and the second locking hole and then is connected with the second locking piece.

Description

Telescopic device Technical Field The application relates to the technical field of garden tools, in particular to telescopic equipment. Background With rapid development of technology, the telescopic device is widely applied to various gardening tools such as long-pole pruning shears or pole saws. However, in the related art, the telescoping function of the apparatus is often achieved by connecting tubular elements of different diameters, but the apparatus lacks a limiting function in the radial direction, reducing the efficiency of use of the telescoping apparatus. In other related technologies, radial limiting function of the telescopic equipment is achieved through the semi-annular locking sleeve, but the split type structure reduces structural strength of the telescopic equipment, and safety and stability of the telescopic equipment are affected. Disclosure of utility model In view of the foregoing, it is necessary to provide a telescopic device, which can quickly adjust the length of the telescopic device, and improve the safety and stability of the telescopic device. In a first aspect, the present application provides a telescopic device comprising an inner tube extending in an axial direction. And the outer tube is movably sleeved on the outer side of the inner tube. The clamping sleeve is arranged on the outer side of the inner tube and comprises a lantern ring and an abutting part extending from the lantern ring towards the fixing part. The fixing sleeve comprises a fixing part connected to the outer tube and a locking part at least partially sleeved on the periphery of the abutting part, and the outer wall of the locking part is provided with external threads. The locking sleeve comprises a locking part positioned at the outer side of the fixing part, and an inner thread matched with the outer thread is arranged on the inner wall of the locking part. The clamping sleeve comprises a claw extending from the lantern ring away from the abutting part and a clamping groove positioned between the claw and the lantern ring, and the locking sleeve comprises a clamping part extending radially from the inner wall of the locking sleeve, wherein the clamping part is clamped into the clamping groove. In one possible design, the length of the engagement portion is smaller than the length of the engagement groove in the axial direction. In one possible design, the number of jaws forms an outer diameter that is larger than an inner diameter of the engagement portion formed within the locking sleeve. In one possible design, the telescopic device further comprises a bushing connected with the inner tube, the inner wall of the fixing portion forms an annular blocking surface, the end of the outer tube abuts against the annular blocking surface, and when the length of the telescopic device reaches the longest, the end of the bushing abuts against the annular blocking surface. In one possible design, a limiting protrusion is arranged in the bushing, an inner tube limiting hole is formed in one end, close to the outer tube, of the inner tube, and the limiting protrusion is accommodated in the inner tube limiting hole. In one possible design, the abutment includes a plurality of wedge-shaped tabs disposed circumferentially around the outer side of the inner tube, each of the wedge-shaped tabs decreasing in thickness in a direction toward the outer tube. In one possible design, the inner wall of the locking portion forms a tapered surface, and a receiving space is formed between the tapered surface and the inner tube, and the inner diameter of the receiving space decreases in a direction approaching the outer tube. In one possible design, the outer side of the inner tube is inwards sunken with an inner tube limiting groove, the inner wall of the fixing sleeve is provided with a first limiting boss, and the first limiting boss is clamped with the inner tube limiting groove. In one possible design, the outer tube is provided with an outer tube limiting groove, the outer tube limiting groove is arranged at one end of the outer tube, which is close to the fixing sleeve, and the annular blocking surface is provided with a second limiting boss which is clamped with the outer tube limiting groove. In one possible design, the fixing part comprises a first locking part and a second locking part which extend from the peripheral wall of the fixing part at intervals, a locking gap is formed between the first locking part and the second locking part, a first locking hole is formed in the first locking part, a second locking hole is formed in the second locking part, the first locking hole corresponds to the second locking hole, and an outer pipe limiting hole is formed in one end, close to the fixing part, of the outer pipe. The telescopic equipment further comprises a limiting piece, a first locking piece and a second locking piece, wherein the limiting piece is provided with an inserting hole, one end of the limiting piece is provi