CN216589202U - Telescopic link and fan - Google Patents

Abstract

The utility model discloses a telescopic rod and a fan, wherein the telescopic rod comprises a first pipe body and a second pipe body, the first pipe body is provided with an expansion sleeve and an expansion cone, the second pipe body is sleeved outside the expansion sleeve, and the expansion sleeve is sleeved outside the expansion cone and can slide relative to the expansion cone; the expansion sleeve extends into the expansion sleeve to expand the expansion sleeve so as to fix the second pipe body and the first pipe body; the expansion sleeve is far away from the expansion cone, so that the expansion sleeve is contracted, and the first pipe body can slide relative to the second pipe body. The telescopic rod realizes the connection and separation of the pipe bodies through elastic expansion joint.

Description

Telescopic link and fan

Technical Field

The utility model belongs to the field of extension and retraction, and particularly relates to an extension rod and a fan.

Background

At present, fans with various functions are in the increasing number of household electrical appliances, and not only are various functions of the fans required to be perfect, but also the realization methods of the various functions are required to be efficient, simple and convenient. For example, the fan uses the telescopic rod as the body and has the telescopic function. Through the flexible of telescopic link, the fan not only has the advantage that accomodate the space and reduce, can adjust different heights according to the condition moreover to guarantee the effect of blowing.

The main of current fan, its telescopic link has two kinds:

firstly, the fan head is positioned by the friction force between a plastic piece and a sheet metal part, after the fan head is used for multiple times in a telescopic mode, the plastic piece is abraded, the friction force is reduced, the weight of the fan head cannot be effectively supported, the phenomena of rod positioning failure and automatic downward sliding occur, the locking effect is not obvious, and the lifting function cannot be realized;

secondly, realize the location through the cooperation of metal single-end shell fragment and outer tube locating hole, but the location of this structural style at present need press all single-end shell fragments and just can realize the decline of pipe when the shrink, and it is comparatively loaded down with trivial details to adjust.

SUMMERY OF THE UTILITY MODEL

The utility model provides a telescopic rod and a fan, which aim to solve the technical problem that the telescopic rod is inconvenient to adjust in the background technology.

In order to achieve the purpose, the specific technical scheme of the telescopic rod and the fan is as follows:

a telescopic rod comprises a first pipe body and a second pipe body, wherein the first pipe body is provided with an expansion sleeve and an expansion cone, the second pipe body is sleeved outside the expansion sleeve, and the expansion sleeve is sleeved outside the expansion cone and can slide relative to the expansion cone; the expansion sleeve extends into the expansion sleeve to expand the expansion sleeve so as to fix the second pipe body and the first pipe body; the expansion sleeve is far away from the expansion cone, so that the expansion sleeve is contracted, and the first pipe body can slide relative to the second pipe body.

Furthermore, the expansion cone is provided with a screw mechanism, and the expansion sleeve is driven to move through the screw mechanism.

Further, the expansion sleeve is provided with a connecting rod, and the expansion cone is provided with a threaded hole in threaded connection with the connecting rod; the expansion cone rotates to enable the expansion sleeve to slide relative to the expansion cone.

Furthermore, the expansion cone is provided with a driving platform, and two ends of the driving platform are respectively used for being abutted against the first pipe body and the second pipe body so as to rotate the expansion sleeve through the exposed driving platform.

Furthermore, the first pipe body is provided with a limiting hole, the end part of the connecting rod is inserted into the limiting hole, and the limiting hole is circumferentially fixed with the end part of the connecting rod.

Furthermore, the side surface of the expansion cone is provided with an annular positioning groove, a clamping ring is sleeved in the positioning groove and is in screw connection with the first pipe body, and therefore the expansion cone is rotatably connected with the first pipe body.

Furthermore, the bottom wall of the positioning groove is also provided with an avoiding groove, and the avoiding groove is used for the screw penetrating through the clamping ferrule to stretch into.

Further, the inflation cover is including the extrusion piece that the interval set up, and extrusion piece inner wall is used for and expands awl outer wall butt to make the extrusion piece lean out and with second body inner wall butt.

Further, the second body is close to first body one end and is formed with the turn-ups, and the turn-ups is used for and expands the cover butt to it is spacing to expand the cover.

A fan comprises the telescopic rod.

The telescopic rod and the fan have the following advantages:

1. the tightness mode is simple to operate and easy to operate;

2. the locking capacity is strong, and the upper part does not need to slip down due to overlong locking time;

3. the limit position is limited at the limit position, so that the upper part and the lower part of the body are not worried about to separate, and the appearance is smooth and attractive.

Drawings

FIG. 1 is a schematic view of a fan according to the present invention;

FIG. 2 is a schematic drawing showing the telescoping tube of the present invention being retracted;

FIG. 3 is an extended view of the extension tube of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic view of the expansion cone structure of the present invention;

FIG. 6 is a cross-sectional view of a first tubular body of the present invention;

FIG. 7 is a schematic view of a locking collar of the present invention;

FIG. 8 is a schematic structural view of an expansion shell of the present invention;

fig. 9 is a top view of the first tube of the present invention.

The notation in the figure is:

1. a base; 2. a machine head; 3. a first pipe body; 31. positioning the concave platform; 32. a limiting hole; 4. a second tube body; 41. flanging; 5. an expansion cone; 51. an insertion portion; 52. positioning the projection; 53. positioning a groove; 54. an avoidance groove; 55. a drive stage; 56. a threaded hole; 6. a clamping ferrule; 7. an expansion sleeve; 71. a connecting seat; 72. extruding the sheet; 73. a connecting rod.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, a telescopic rod and a fan of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the telescopic rod of the present invention has a telescopic function, and is commonly used in a fan body and the like.

Specifically speaking, the telescopic link includes that at least two sections overlap the body of establishing one by one, wherein adjacent first body 3 and 4 interconnect of second body to can slide the after-fixing each other, with the length of adjusting whole telescopic link. Wherein, first body 3 and second body 4 can be the adjacent body that just meets of arbitrary two sections in the telescopic link, and one of them body names first body 3, then another body then names second body 4.

As shown in fig. 2 and 3, the first pipe body 3 is provided with an expansion cone 5 and an expansion sleeve 7, the second pipe body 4 is sleeved outside the expansion sleeve 7, and the expansion sleeve 7 is sleeved outside the expansion cone 5 and can slide relative to the expansion cone 5; the expansion sleeve 7 extends into the expansion sleeve 7 to expand the expansion sleeve 7, and the expansion sleeve 7 is in interference fit with the second pipe body 4 to fix the second pipe body 4 and the first pipe body 3; the expansion sleeve 7 is far away from the expansion cone 5, so that the expansion sleeve 7 is contracted, and the expansion sleeve 7 is in clearance fit with the second pipe body 4, so that the first pipe body 3 can slide relative to the second pipe body 4.

In order to drive the expansion shell 7 to move relative to the expansion cone 5, the expansion cone 5 drives the expansion shell 7 to move through a screw mechanism. Through the rotation of the expansion cone 5, the rotary motion of the expansion cone 5 is converted into the linear motion of the expansion sleeve 7 by the thread structure of the screw mechanism, so that the expansion sleeve 7 slides relative to the expansion cone 5.

Referring to fig. 4 to 6, in particular, the expansion cone 5 is rotatably connected to the first tubular body 3. The end of the expansion cone 5 remote from the expansion sleeve 7 is inserted into the first tubular body 3 and is rotatably connected to the first tubular body 3 via this end. An end of the expansion cone 5 remote from the expansion sleeve 7 is formed with a frustoconical insertion portion 51 to facilitate insertion of the expansion cone 5 into the first tubular body 3. The inner wall of the first tubular body 3 is formed with a positioning recess 31, the bottom of the insertion portion 51 is formed with a positioning projection 52, and the insertion portion 51 passes through the positioning recess 31 to bring the positioning projection 52 into contact with the positioning recess 31, thereby preliminarily positioning the expansion cone 5.

An annular positioning groove 53 is formed in one side, away from the insertion part 51, of the positioning protrusion 52, and a clamping collar 6 is sleeved in the positioning groove 53. The retaining ring 6 is C-shaped to fit into the positioning slot 53. Simultaneously screens lasso 6 and first body 3 screwed connection to set up screens lasso 6 as a limit structure in first body 3, with axial fixity expansion cone 5, guarantee that expansion cone 5 can rotate in first body 3 steadily. And the positioning bulge 52 is clamped between the clamping ferrule 6 and the positioning concave table 31, and also has a limiting effect, so that the stability and firmness of the rotary connection are ensured.

The bottom wall of the positioning groove 53 is also provided with an avoiding groove 54, and the avoiding groove 54 is used for a screw penetrating through the clamping ferrule 6 to extend into so as to prevent the screw from interfering the rotation of the expansion cone 5.

The expansion cone 5 is provided with a driving platform 55 at the middle part, and two ends of the driving platform 55 are respectively used for being abutted against the first pipe body 3 and the second pipe body 4 so as to expose the driving platform 55 from between the first pipe body 3 and the second pipe body 4, and the expansion sleeve 7 can be conveniently rotated by hands.

As shown in fig. 8, the expansion sleeve 7 includes a connecting seat 71, and the edge of the connecting seat 71 is formed with pressing pieces 72 arranged at intervals, and the inner wall of the pressing piece 72 is used for abutting against the outer wall of the expansion cone 5, so that the pressing piece 72 inclines outwards and abuts against the inner wall of the second pipe body 4.

The connecting seat 71 is formed with a connecting rod 73 in the pressing piece 72, the expansion cone 5 is provided with a threaded hole 56, and the threaded hole 56 is in threaded connection with the connecting rod 73, so that the expansion sleeve 7 is driven to move through threads.

Referring to fig. 9, in order to prevent the connecting rod 73 from rotating with the expansion cone 5, the first tube 3 is formed with a limiting hole 32, the limiting hole 32 is used for the end of the connecting rod 73 to be inserted, and the limiting hole 32 is circumferentially fixed to the end of the connecting rod 73 to prevent the connecting rod 73 from rotating. Specifically, the limit hole 32 is D-shaped, and an anti-rotation portion inserted into the limit hole 32 is formed at the end of the connecting rod 73. Except for the limiting hole 32, the expansion sleeve 7 may be circumferentially fixed to the first pipe body 3 or the second pipe body 4, for example, a sliding groove structure disposed on the first pipe body 3 or the second pipe body 4 along a bus, or the like.

In order to prevent the expansion sleeve 7 from being pulled out of the second pipe body 4, a flange 41 is formed at one end of the second pipe body 4 close to the first pipe body 3, and the flange 41 is used for being abutted against the expansion sleeve 7 so as to limit the expansion sleeve 7 and prevent the expansion sleeve 7 from being separated from the second pipe body 4.

To sum up, the expansion cone 5 is rotated by the handheld driving platform 55, and due to the screw mechanism consisting of the threads and the limiting structure, the expansion sleeve 7 moves along the expansion cone 5, the expansion sleeve 7 retreats from the expansion cone 5, the limiting piece elastically resets and has a gap with the inner wall of the second pipe body 4, so that the expansion sleeve 7 can move relative to the second pipe body 4, and meanwhile, the first pipe body 3 moves relative to the first pipe body 3, and the length of the telescopic rod is adjusted; after the adjustment is completed, the expansion cone 5 is rotated reversely, the expansion sleeve 7 is gradually sleeved on the expansion cone 5, and the limiting piece is extruded and elastically deformed, so that the expansion sleeve 7 and the second pipe body 4 are in interference fit to fix the first pipe body 3 and the second pipe body 4.

The utility model also discloses a fan which comprises the telescopic rod. The bottom of the telescopic rod is fixed on the base 1, and the machine head 2 provided with the rotatable fan blades is arranged at the top of the telescopic rod, so that the height of the machine head 2 is adjusted. The telescopic rod can be used for equipment such as a lampshade frame and a photographic support which are connected by a rod body, so that the length or the height can be adjusted.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. A telescopic rod comprises a first pipe body and a second pipe body, and is characterized in that an expansion sleeve and an expansion cone are arranged on the first pipe body, the second pipe body is sleeved outside the expansion sleeve, and the expansion sleeve is sleeved outside the expansion cone and can slide relative to the expansion cone; the expansion sleeve extends into the expansion sleeve to expand the expansion sleeve so as to fix the second pipe body and the first pipe body; the expansion sleeve is far away from the expansion cone, so that the expansion sleeve is contracted, and the first pipe body can slide relative to the second pipe body.

2. The telescopic rod according to claim 1, wherein the expansion cone is provided with a lead screw mechanism by which the expansion sleeve is driven to move.

3. The telescoping pole of claim 2, wherein the expansion sleeve is provided with a connecting rod, the expansion cone being tapered with a threaded bore in threaded connection with the connecting rod; the expansion cone rotates to enable the expansion sleeve to slide relative to the expansion cone.

4. The telescopic rod according to claim 3, wherein the expansion cone is formed with a driving platform, and two ends of the driving platform are respectively used for being abutted with the first pipe body and the second pipe body so as to rotate the expansion sleeve through the exposed driving platform.

5. The telescopic rod according to claim 3, wherein the first tube body is formed with a limiting hole for the end of the connecting rod to be inserted into, and the limiting hole is circumferentially fixed with the end of the connecting rod.

6. The telescopic rod according to claim 2, wherein the expansion cone has a side surface provided with an annular positioning groove, and a locking ring is sleeved in the positioning groove and is screwed with the first tube body, so that the expansion cone is rotatably connected with the first tube body.

7. The telescopic rod according to claim 6, wherein the bottom wall of the positioning groove is further provided with an avoiding groove, and the avoiding groove is used for a screw penetrating through the clamping ring to extend into.

8. The extension pole of claim 1 wherein the expansion sheath includes spaced apart crush tabs, an inner wall of the crush tabs adapted to abut an outer wall of the expansion cone such that the crush tabs are angled outwardly and abut an inner wall of the second tubular body.

9. The telescopic rod according to claim 1, wherein a flange is formed at one end of the second tube body, which is close to the first tube body, and the flange is used for abutting against the expansion sleeve so as to limit the expansion sleeve.

10. A fan, characterized in that it comprises a telescopic rod according to any one of claims 1 to 9.

Images