CN215303528U

CN215303528U - telescopic rod

Info

Publication number: CN215303528U
Application number: CN202120921123.4U
Authority: CN
Inventors: 赖信元
Original assignee: FUKO Inc
Current assignee: FUKO Inc
Priority date: 2020-08-24
Filing date: 2021-04-29
Publication date: 2021-12-28
Anticipated expiration: 2031-04-29
Also published as: DE102021121431A1; TWM603065U; DE102021121431B4

Abstract

A telescopic rod comprises a fixed seat, an upper pipe unit, a lower pipe unit, a pulley unit and an elastic piece. The lower tube unit comprises a first lower tube and at least one second lower tube, the pulley unit at least comprises a fixed pulley arranged on the fixed seat, a sliding block arranged inside the upper tube unit and a linkage rope, the linkage rope is positioned at the fixed seat or at the first end of the sliding block, connected to the second end of the second lower tube and an intermediate section, the intermediate section at least bypasses the fixed pulley, the intermediate section can be positioned relative to the fixed seat, the elastic piece is propped against the fixed seat and between the sliding blocks, the elastic piece constantly enables the sliding block to keep away from the trend of the fixed seat, and the linkage rope keeps tension. The telescopic rod can be unfolded or folded by using the integral configuration.

Description

Telescopic rod

Technical Field

The utility model relates to a telescopic rod, in particular to a pulley type telescopic rod.

Background

A foldable multi-section telescopic rod (prior art described in taiwan patent No. TW M596544) includes a hollow upper tube, a first lower tube slidably inserted into the upper tube, a plurality of second lower tubes connected in series, a connecting rope, and a locking pin unit. The upper pipe is sleeved with a handle, the first lower pipe is provided with a through hole near the top end, and the second lower pipes are respectively provided with a joint fixedly arranged at the top.

The linkage rope is arranged inside the upper pipe, the first lower pipe and the second lower pipe in a penetrating mode and provided with a first end fixed to the top of the upper pipe and a second end opposite to the first end, and the second end is fixed to a joint of the second lower pipe which is farthest away from the upper pipe. The clamping pin unit is provided with a positioning seat fixed at the top end of the first lower pipe, an elastic sheet connected with the positioning seat and a clamping pin fixed at the tail end of the elastic sheet.

When the upper pipe, the first lower pipe and the second lower pipe are mutually sleeved into an unfolded state, the joint of the second lower pipe adjacent to the first lower pipe is inserted into the first lower pipe, the joint of the second lower pipe farthest away from the upper pipe is inserted into the adjacent second lower pipe, the linkage rope is in a straightened state and has larger tension, the clamping pin of the clamping pin unit extends into the through hole, and the telescopic rod is in a use state with the maximum length.

When a user presses the bayonet lock, the tension of the linkage rope is released, the bayonet lock and the through hole can be staggered, at the moment, an operator can retract the first lower pipe towards the inside of the upper pipe, the linkage rope is loosened, the second lower pipe can be separated from the first lower pipe, the second lower pipes can also be separated from each other, the first lower pipe can retract relative to the inside of the upper pipe, the second lower pipe can be parallel and parallel relative to the upper pipe, and the telescopic rod is folded into a smaller length shape.

When the first lower pipe is pulled out relative to the outer part of the upper pipe, the second lower pipe and the first lower pipe can be connected in series into a straight rod shape until the clamping pin of the clamping pin unit extends into the through hole, and the telescopic rod is enabled to be restored to the use state with the maximum length.

Although the above-mentioned telescopic rod can achieve the folding purpose, when the telescopic rod is folded from the maximum length using state, if the upper tube, the first lower tube and the second lower tube are separated from each other, the first lower tube must be retracted into the upper tube to have a larger length, and a compression spring sleeved between the second end of the linking rope and the corresponding joint must be made into a larger length and a larger loop diameter, and the second lower tube also has a larger tube diameter, and the whole weight is heavy.

In addition, when the user presses the latch and the first lower tube is retracted toward the inside of the upper tube, the fingers of the operator may be pinched by the joint of the first lower tube and the upper tube, which is dangerous in operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a telescopic rod capable of solving the existing defects.

The telescopic rod comprises a fixed seat, an upper pipe unit, a lower pipe unit, a pulley unit and an elastic piece, wherein the upper pipe unit extends along an axis and is fixed on the fixed seat, the lower pipe unit comprises a first lower pipe and at least one second lower pipe, the first lower pipe and the second lower pipe can be mutually sleeved along the axis, the second lower pipe is provided with a positioning part, when the first lower pipe and the second lower pipe are sleeved with the upper pipe unit along the axis, the first lower pipe is sleeved and positioned with the upper pipe unit along the axis, the pulley unit at least comprises a fixed pulley arranged on the fixed seat, a sliding block which can slide along the axis and is arranged in the upper pipe unit, and a linkage rope, the linkage rope is provided with a first end positioned at one of the fixed seat and the sliding block, a second end which is opposite to the first end and is connected with the positioning part, and locate first end with the interlude between the second end, the interlude is walked around at least the fixed pulley, the elastic component bullet support in the fixing base with between the slider, its elasticity is permanent makes the slider keep away from in the trend of fixing base, and makes the interlock rope keeps tension.

The telescopic rod further comprises a locking unit arranged on the fixed seat, and the middle section of the linkage rope can be pressed by the locking unit to be positioned relative to the fixed seat.

The fixed seat is provided with a pivot, the locking unit is provided with an eccentric block pivoted on the pivot and an operating handle connected with the eccentric block, the eccentric block is provided with a peripheral surface which is eccentrically arranged relative to the pivot, the peripheral surface is provided with a pressing part which generates the maximum distance with the pivot, and the pressing part of the eccentric block can be driven to rotate by pulling the operating handle by taking the pivot as a rotating center, so that the pressing part is pressed at the middle section of the linkage rope.

According to the telescopic rod, the sliding block of the pulley unit is provided with the lower positioning rod, the first end of the linkage rope is positioned on the lower positioning rod, and the middle section of the linkage rope bypasses the fixed pulley of the fixed seat.

In the telescopic rod, the fixed seat is also provided with an upper positioning rod, the sliding block is provided with a movable pulley, the first end of the linkage rope is positioned on the upper positioning rod, and the middle section of the linkage rope bypasses the movable pulley of the sliding block and the fixed pulley of the fixed seat.

In the telescopic rod, the number of the fixed pulleys of the pulley units arranged on the fixed seat is two, the sliding block is provided with the lower positioning rod and the movable pulley arranged on one side of the lower positioning rod, the first end of the linkage rope is positioned on the lower positioning rod, and the middle section of the linkage rope sequentially bypasses one of the fixed pulleys, bypasses the movable pulley of the sliding block and bypasses the other fixed pulley arranged on the fixed seat.

In the telescopic rod of the present invention, the fixed base has a pivot shaft provided on one side of the fixed pulley, the locking unit has an eccentric block pivoted to the pivot shaft, and an operating handle connected to the eccentric block, and the operating handle is operated to interlock the eccentric block, so that the eccentric block can press and position the interlocking rope passing around the fixed pulley, or the interlocking rope is released.

In the telescopic rod of the utility model, the fixed seat is provided with two upper through holes which are arranged on one side of the fixed pulley and through which the linkage rope passes.

According to the telescopic rod, the sliding block of the pulley unit is provided with at least one lower through hole for the connecting rope to penetrate through.

The utility model has the beneficial effects that: the middle section of the linkage rope of the pulley unit is utilized to bypass the fixed pulley, so that the first lower pipe and the second lower pipe are smaller in operation stroke of disassembling along the axis, the compressed length of the elastic piece can be smaller, and the whole weight can be reduced.

Drawings

FIG. 1 is an exploded perspective view of a first embodiment of the extension pole of the present invention;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

FIG. 3 is an assembled cross-sectional view of the first embodiment;

FIG. 4 is an enlarged partial schematic view of FIG. 3;

fig. 5 is a schematic view illustrating a folding operation according to the first embodiment;

fig. 6 is a completed collapsing diagram of the first embodiment;

FIG. 7 is an assembled cross-sectional view of a second embodiment of the extension pole of the present invention;

fig. 8 is a combined cross-sectional view of a third embodiment of the extension pole of the present invention.

Detailed Description

The utility model is described in detail below with reference to the following figures and examples:

referring to fig. 1 to 4, a first embodiment of the telescopic rod of the present invention comprises a fixing base 10, a locking unit 20, an upper pipe unit 30, a lower pipe unit 40, a pulley unit 50 and an elastic member 60.

The fixing base 10 has a top surface 11, a bottom surface 12 opposite to the top surface 11, a positioning slot 13 recessed from the top surface 11, two upper through holes 14 disposed from the bottom surface 12 toward the top surface 11 and communicated with the positioning slot 13, and a pivot 15 disposed in the positioning slot 13.

The locking unit 20 is rotatable and mounted on the fixing base 10, and has an eccentric block 21 pivotally mounted on the pivot 15, and an operating handle 22 connected to the eccentric block 21. The eccentric block 21 has a peripheral surface 211 that is eccentrically disposed with respect to the pivot 15, and the peripheral surface 211 has a pressing portion 212 that generates the maximum distance with the pivot 15, and pulling the operating handle 22 can drive the pressing portion 212 of the eccentric block 21 to rotate around the pivot 15 as a rotation center.

The upper tube unit 30 extends along an axis L and includes an upper tube 31 fixed at the bottom of the fixing base 10 and a handle sleeve 32 covering the upper tube 31 and the outside of the fixing base 10.

The lower tube unit 40 includes a first lower tube 41 and a second lower tube 42, the first lower tube 41 has a joint 411 disposed at the top end and capable of being inserted into the bottom of the upper tube 31, the second lower tube 42 has a positioning portion 421 disposed at the top end and capable of being inserted into the bottom of the first lower tube 41 and having the same shape as the joint 411.

The pulley unit 50 includes a pair of fixed pulleys 51 mounted on the fixed base 10, a sliding block 52 capable of sliding along the axis L and disposed inside the upper tube unit 30, and a linking rope 53, wherein the sliding block 52 has a lower positioning rod 521 and two lower through holes 522 disposed on one side of the lower positioning rod 521. The linking rope 53 has a first end 531 positioned on the lower positioning rod 521, a second end 532 opposite to the first end 531 and connected to the positioning portion 421, and a middle section 533 disposed between the first end 531 and the second end 532, wherein the middle section 533 passes around the fixed pulley 51 and through the upper through hole 14 and one of the lower through holes 522 of the slider 52, and the middle section 533 can be pressed by the locking unit 20 to be positioned relative to the fixing base 10.

The elastic member 60 is a compression spring, opposite ends of which are respectively elastically abutted between the bottom of the fixed seat 10 and the top of the sliding block 52, and the elastic force of the elastic member constantly keeps the sliding block 52 away from the fixed seat 10 and keeps the linkage rope 53 under tension.

For a further understanding of the utility model, its role, the technical means employed, and the effects to be achieved, it is believed that the utility model will be more fully and specifically understood from the following description.

As shown in fig. 3, 4 and 5, when the telescopic rod of the present invention is assembled and unfolded, the upper tube unit 30 and the lower tube unit 40 are sleeved together along the axis L and unfolded, and there is a maximum length between the top surface 11 of the fixing base 10 and the bottom end of the second lower tube 42 of the lower tube unit 40. At this time, the interlocking string 53 is in a linear shape and has a large tension by the elastic force of the elastic member 60. The intermediate section 533 of the interlocking rope 53 is clamped between the pressing section 212 of the eccentric block 21 and the fixed pulley 51, and the interlocking rope 53 between the fixed pulley 51 and the slider 52 is prevented from being pulled, so that the extendable and retractable rod can be maintained in the extended state.

When a user wants to fold the telescopic rod, as shown in fig. 5 and 6, the operator firstly pulls the operating handle 22 and drives the pressing portion 212 of the eccentric block 21 to rotate around the pivot 15, and the pressing portion 212 is rotated away from the fixed pulley 51, the original clamping force of the linking rope 53 is eliminated, when the operator detaches the second lower tube 42 from the first lower tube 41 and detaches the first lower tube 41 from the upper tube unit 30, the first end 531 of the linking rope 53 pulls the slider 52 toward the fixed seat 10 (the elastic member 60 is compressed and stores the releasing elastic force), the tension of the linking rope 53 is released and loosened, and the upper tube unit 30, the first lower tube 41 and the second lower tube 42 can be folded in parallel and in parallel, and the telescopic rod is folded.

When the telescopic rod is to be operated from the folded state to the unfolded state again, the operator only needs to connect the second lower tube 42, the first lower tube 41 and the upper tube unit 30 in series along the axis L, and the linking rope 53 is in a state of large tension by using the elastic force of the elastic member 60, and then the operator pulls the operating handle 22 and drives the pressing part 212 of the eccentric block 21 to rotate around the pivot 15 as the rotation center, and rotates the pressing part 212 toward the fixed pulley 51, so that the linking rope 53 is clamped again, and the unfolded state shown in fig. 3 and 4 can be restored.

Therefore, in the telescopic rod of the present invention, when the first lower tube 41 and the second lower tube 42 are sleeved with the upper tube unit 30 along the axis L by the cooperation of the integral components, the elastic force of the elastic member 60 keeps the linking rope 53 in tension, and the locking unit 20 presses the middle section 533 of the linking rope 53, so that the telescopic rod can be expanded into an extended state, when the locking unit 20 is operated and the pressing of the linking rope 53 is released, the linking rope 53 cooperates with the elastic member 60, so that the sliding block 52 approaches the fixed seat 10, and the first lower tube 41 and the second lower tube 42 are folded relative to the upper tube unit 30, so that the telescopic rod can be operated from the expanded state into the collapsed state, and the telescopic rod can achieve the purpose of reducing the collapsed volume when not in use, and the expansion or the operation of the telescopic rod is very easy.

The main effect of the present invention is that the middle section 533 of the linking rope 53 of the pulley unit 50 bypasses the fixed pulley 51, and two bending sections can be generated on the linking rope 53 of the fixed seat 10 and the slider 52, and the bending sections share the operation stroke of mutually detaching the upper tube 31, the first lower tube 41 and the second lower tube 42 along the axis L, so that the detaching stroke is smaller, the compressed length of the elastic member 60 can also be smaller, the elastic member 60 can select a smaller loop diameter specification, the upper tube 31 can select a smaller tube diameter, and the overall weight can be reduced.

It should be noted that the shape and structure of the locking unit 20 of the present invention are quite simple, and by operating the operating handle 22, the pressing portion 212 of the eccentric block 21 can be driven to rotate around the pivot 15 as the rotation center, and the pressing portion 212 can press or release the middle segment 533 of the linking rope 53, so that the operation is quite simple, and the manufacture and assembly are also easy.

As shown in fig. 7, the difference between the second embodiment and the first embodiment of the telescopic rod of the present invention is that the fixed seat 10 further has an upper positioning rod 16 disposed below the fixed pulley 51, the sliding block 52 has a movable pulley 521 '(which is the lower positioning rod of the first embodiment), the first end 531 of the linking rope 53 is positioned on the upper positioning rod 16, and the middle segment 533 passes around the movable pulley 521' of the sliding block 52 and the fixed pulley 51 of the fixed seat 10. The fixed pulley 51, the movable pulley 521' of the sliding block 52 and the linking rope 53 together form a pulley unit, and three bending sections can be generated on the fixed seat 10 and the linking rope 53 of the sliding block 52, and the bending sections share the operation stroke of mutually detaching the upper pipe 31, the first lower pipe 41 and the second lower pipe 42 along the axis L, so that the detaching stroke is smaller, and the same purpose and effect as the first embodiment can be achieved.

As shown in fig. 8, a third embodiment of the telescopic rod of the present invention is different from the first embodiment in that the number of the fixed pulleys 51, 51 ' of the pulley unit 50 disposed on the fixed base 10 is two, the fixed pulleys 51, 51 ' are disposed vertically, the slider 52 further has a movable pulley 523 disposed on one side of the lower positioning rod 521, the first end 531 of the linking rope 53 is positioned on the lower positioning rod 521, the middle segment 533 sequentially passes around one of the fixed pulleys 51 ', passes around the movable pulley 523 of the slider 52, and passes around the other fixed pulley 51 disposed on the fixed base 10. The fixed pulleys 51 and 51', the movable pulley 523 of the slider 52 and the linkage rope 53 together form a pulley unit, and four bending sections can be generated on the fixed seat 10 and the linkage rope 53 of the slider 52, and the bending sections share the operation stroke of mutually detaching the upper pipe 31, the first lower pipe 41 and the second lower pipe 42 along the axis L, so that the detaching stroke is smaller, and the same purpose and effect as those of the first embodiment can be achieved.

In conclusion, the pulley type telescopic rod has the advantages of simple overall structure, easiness in operation and capability of really achieving the purpose of the utility model.

Claims

1. The utility model provides a telescopic link contains fixing base, top tube unit, low tube unit, pulley unit and elastic component, its characterized in that:

the upper pipe unit extends along the axis and is fixed on the fixed seat;

the lower pipe unit comprises a first lower pipe and at least one second lower pipe, the first lower pipe and the second lower pipe can be mutually sleeved along the axis, the second lower pipe is provided with a positioning part, and when the first lower pipe and the second lower pipe are sleeved with the upper pipe unit along the axis, the first lower pipe is sleeved and positioned with the upper pipe unit along the axis;

the pulley unit at least comprises a fixed pulley arranged on the fixed seat, a sliding block which can slide along the axis and is arranged in the upper pipe unit, and a linkage rope, wherein the linkage rope is provided with a first end positioned at one of the fixed seat and the sliding block, a second end opposite to the first end and connected to the positioning part, and a middle section arranged between the first end and the second end, and the middle section at least bypasses the fixed pulley;

the elastic piece is elastically propped between the fixed seat and the sliding block, the elastic force of the elastic piece constantly enables the sliding block to keep away from the trend of the fixed seat, and the linkage rope keeps tension.

2. The telescoping pole of claim 1, wherein: the linkage rope is characterized by further comprising a locking unit arranged on the fixed seat, and the middle section of the linkage rope can be pressed by the locking unit to be positioned relative to the fixed seat.

3. The telescoping pole of claim 2, wherein: the fixing seat is provided with a pivot, the locking unit is provided with an eccentric block pivoted on the pivot and an operating handle connected with the eccentric block, the eccentric block is provided with a peripheral surface which is eccentrically arranged relative to the pivot, the peripheral surface is provided with a pressing part which generates the largest distance with the pivot, the pressing part of the eccentric block can be driven to rotate by pulling the operating handle by taking the pivot as a rotation center, and the pressing part is pressed at the middle section of the linkage rope.

4. The telescoping pole of claim 1, wherein: the sliding block of the pulley unit is provided with a lower positioning rod, the first end of the linkage rope is positioned at the lower positioning rod, and the middle section of the linkage rope bypasses the fixed pulley of the fixed seat.

5. The telescoping pole of claim 1, wherein: the fixing base still has the upper locating lever, the slider has the movable pulley, the first end of linkage rope is located upper locating lever, the interlude is walked around the movable pulley of slider reaches the fixed pulley of fixing base.

6. The telescoping pole of claim 1, wherein: the pulley unit set up in the fixed pulley quantity of fixing base has two, the slider has down the locating lever, and set up in the movable pulley of locating lever one side down, the first end of linkage rope is located locating lever down, one of them fixed pulley is walked around to the interlude according to the preface, is walked around again the movable pulley of slider, again walk around set up in another fixed pulley of fixing base.

7. The telescopic rod according to any one of claims 4 to 6, wherein: still include install in the locking unit of fixing base, the fixing base have set up in the pivot of fixed pulley one side, locking unit has the pivot to locate the eccentric block of pivot to and connect in the operating handle of eccentric block, operate operating handle and interlock the eccentric block enables the eccentric block will be walked around the interlock rope suppression location of fixed pulley, or make the interlock rope pine takes off.

8. The telescoping pole of claim 5, wherein: the fixed seat is provided with two upper through holes which are arranged on one side of the fixed pulley and through which the linkage rope passes.

9. The telescoping pole of claim 4, wherein: the sliding block of the pulley unit is provided with at least one lower perforation for the connecting rope to penetrate through.