CN213628339U

CN213628339U - Telescopic rod

Info

Publication number: CN213628339U
Application number: CN202022209565.4U
Authority: CN
Inventors: 柴华
Original assignee: Tianjin Bohai Weiye Cleaning Products Co ltd
Current assignee: Tianjin Bohai Weiye Cleaning Products Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-07-06
Anticipated expiration: 2030-09-30

Abstract

The utility model provides a telescopic rod, which relates to the technical field of telescopic rods and comprises at least two sections of a first telescopic joint and a second telescopic joint which are coaxially sleeved, wherein a limiting device is arranged between the first telescopic joint and the second telescopic joint, the diameter of the first telescopic joint is smaller than that of the second telescopic joint, the limiting device comprises a tube bundle and a locking device, the locking device is fixedly connected with the tube bundle through a bolt, the end diameters of the two ends of the tube bundle are respectively adaptive to the outer diameters of the first telescopic joint and the second telescopic joint, the outer walls of the bottom ends of the first telescopic joint and the second telescopic joint are provided with limiting bulges, the inner wall of one end of the tube bundle, which is close to the first telescopic joint, is provided with a limiting groove matched with the limiting bulges, the tube bundle is blocked by the limiting bulges and can not be separated from the bottom end of the first telescopic joint, the outer walls of the first telescopic joint and the second telescopic joint are, be provided with positioner on the tube bank, the utility model discloses flexible effectual avoids the telescopic joint to deviate from.

Description

Telescopic rod

Technical Field

The utility model relates to a telescopic link technical field especially relates to a telescopic link.

Background

The telescopic link has scalable, accomodate convenient, convenient to carry's characteristics, and the wide application is in each field, and is common to have from rapping bar, flexible clothes-horse, flexible umbrella stick, fishing rod, mop etc.. The telescopic rod can be stretched and retracted randomly within a certain length range, the existing telescopic rod is easy to detach when the telescopic rod is stretched to the limit length, troubles are caused to use, and the telescopic rod is provided for avoiding that a user detaches a telescopic joint by mistake when stretching the telescopic rod.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome exist among the prior art not enough, provide a telescopic link that prevents the telescopic joint and deviate from.

The utility model discloses a realize through following technical scheme:

a telescopic rod comprises at least two sections of first telescopic joints and second telescopic joints which are coaxially sleeved, wherein a limiting device is arranged between the first telescopic joints and the second telescopic joints, the diameter of the first telescopic joints is smaller than that of the second telescopic joints, the limiting device comprises a tube bundle and a locking device, the locking device is fixedly connected with the tube bundle through bolts, the end diameters of the two ends of the tube bundle are respectively matched with the outer diameters of the first telescopic joints and the second telescopic joints, limiting bulges are arranged on the outer walls of the bottom ends of the first telescopic joints and the second telescopic joints, a limiting groove is arranged on the inner wall of one end, close to the first telescopic joints, of the tube bundle and matched with the limiting bulges, the tube bundle is blocked by the limiting bulges and can not be separated from the bottom ends of the first telescopic joints, and a plurality of positioning holes are arranged on the outer walls of the first telescopic joints and the second telescopic joints, and the tube bundle is provided with a positioning device.

The utility model discloses technical scheme's further improvement lies in: the positioning device comprises a positioning button, an elastic part and a positioning column, the positioning column is hinged to the positioning button, the diameter of the positioning column is matched with the diameter of the positioning hole, the tube bundle is corresponding to the positioning column, the positioning column is provided with a hole, the positioning column penetrates through the tube bundle and extends into the positioning hole, the positioning button is hinged to the tube bundle, and the elastic part is arranged between the positioning button and the tube bundle.

The utility model discloses technical scheme's further improvement lies in: a through groove is formed in one side, away from the positioning device, of the tube bundle, pressing pieces are arranged on two sides of the through groove, and pressing holes are formed in the pressing pieces.

The utility model discloses technical scheme's further improvement lies in: locking device is including compressing tightly piece and installed part, installed part one end with it is articulated to compress tightly the piece, the installed part other end is the threaded rod, and the threaded rod passes it is fixed through the nut to compress tightly the hole on the tube bank, it includes eccentric cam and arc and pulls the piece to compress tightly the piece, eccentric cam through the pivot with the installed part rotates to be connected, the arc pull the piece with eccentric cam fixed connection.

The utility model has the advantages that: the first telescopic joint is prevented from falling off the tube bundle through the matching of the limiting groove and the limiting bulge, the problem that the tail end of the telescopic rod falls off when the telescopic rod is stretched is solved, and the telescopic joint is assisted and positioned through the positioning device, so that a user can adjust the length of the telescopic rod; the positioning device is convenient to control and position through the positioning button, and the elastic piece is convenient for the positioning button to reset; the tube bundle can be conveniently adapted to telescopic joints with different sizes by arranging the through grooves, and the joint degree of the tube bundle and the telescopic joints can be adjusted by clamping the pressing sheet through the bolts; the expansion joint can be pressed in an auxiliary mode through the eccentric cam and the arc-shaped pulling piece, and the expansion joint is prevented from sliding downwards due to gravity.

Drawings

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

FIG. 2 is a schematic cross-sectional view of a tube bundle according to the present invention;

FIG. 3 is a schematic view of the positioning pair structure of the present invention;

in the figure: 1. a first expansion joint; 2. a second expansion joint; 3. a tube bundle; 4. a limiting groove; 5. positioning holes; 6. a positioning button; 7. an elastic member; 8. a positioning column; 9. a compression sheet; 10. pressing the hole; 11. and a positioning device.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in the figures, the utility model provides a telescopic rod, which comprises at least two sections of a first telescopic joint 1 and a second telescopic joint 2 which are coaxially sleeved, wherein a limiting device is arranged between the first telescopic joint 1 and the second telescopic joint 2, the diameter of the first telescopic joint 1 is smaller than that of the second telescopic joint 2, the limiting device comprises a tube bundle 3 and a locking device, the locking device is fixedly connected with the tube bundle 3 through a bolt, the end diameters of the two ends of the tube bundle 3 are respectively matched with the outer diameters of the first telescopic joint 1 and the second telescopic joint 2, the outer walls of the bottom ends of the first telescopic joint 1 and the second telescopic joint 2 are provided with limiting bulges, the inner wall of one end of the tube bundle 3 close to the first telescopic joint 1 is provided with a limiting groove 4, the limiting groove 4 is matched with the limiting bulges, the tube bundle 3 is blocked by the limiting bulges and can not be taken out from the bottom end of the first telescopic joint 1, the outer walls of the first expansion joint 1 and the second expansion joint 2 are provided with a plurality of positioning holes 5, the tube bundle 3 is provided with a positioning device 11, the positioning device 11 comprises a positioning button 6, an elastic part 7 and a positioning column 8, the elastic part 7 can be a spring or a torsion spring, the positioning button 6 is approximately rectangular in shape, the positioning column 8 is hinged with the positioning button 6, the diameter of the positioning column 8 is matched with the aperture of the positioning hole 5, the tube bundle 3 is provided with a hole corresponding to the positioning column 8, the positioning column 8 penetrates through the tube bundle 3 and extends into the positioning hole 5, the positioning button 6 with the tube bank 3 is articulated, and the pivot passes the central authorities of positioning button 6 and with tube bank 3 fixed connection, and 6 one end belows of positioning button set up reference column 8, and the other end below sets up the spring, and the spring is with positioning button 6 jack-up that makes progress, and reference column 8 then is pressed to descend and stretches into the locating hole 5 of first telescopic joint 1. A through groove is formed in one side, far away from the positioning device 11, of the tube bundle 3, pressing pieces 9 are arranged on two sides of the through groove, and pressing holes 10 are formed in the pressing pieces 9. Locking device is including compressing tightly piece and installed part, installed part one end with it is articulated to compress tightly the piece, the installed part other end is the threaded rod, and the threaded rod passes it is fixed through the nut to compress tightly hole 10 on the tube bank 3, it includes eccentric cam and arc to compress tightly the piece and pull the piece, eccentric cam through the pivot with the installed part rotates to be connected, the arc pull the piece with eccentric cam fixed connection. The telescopic link includes first telescopic joint 1 and second telescopic joint 2 at least, can also set up third telescopic joint, fourth telescopic joint etc. and the diameter of telescopic joint increases in proper order, and the bottom of every telescopic joint all sets up spacing arch and is used for preventing that the telescopic joint from deviating from tube bank 3. The limiting protrusion can be obtained by stamping the tube body of the expansion joint and can also be integrally formed.

The utility model discloses a theory of operation is: when the telescopic rod needs to be lengthened, the arc-shaped pulling piece is pulled to drive the eccentric wheel to rotate, the eccentric wheel is far away from the tube bundle 3, the positioning button 6 is pressed, the positioning button 6 drives the positioning column 8 to be separated from the positioning hole 5 of the first telescopic joint 1, the first telescopic joint 1 is upwards stretched, after the target length is reached, the positioning button 6 is loosened, the positioning button 6 is reset under the pushing of the spring, and the positioning column 8 penetrates into the positioning hole 5 to lock the first telescopic rod and the tube bundle 3 to prevent the first telescopic rod from sliding. Under extreme condition, first telescopic joint 1 is tensile to the bottom, and spacing arch of first telescopic joint 1 bottom blocks spacing ditch 4, and then fixed first telescopic joint 1, avoids first telescopic joint 1 to be pulled out by the maloperation. The limiting groove 4 is matched with the limiting bulge to prevent the first telescopic joint 1 from falling off the tube bundle 3, so that the problem that the tail end of the telescopic rod falls off when the telescopic rod is stretched is solved, and the telescopic joint is assisted and positioned by the positioning device 11, so that the length of the telescopic rod can be adjusted by a user; the positioning device 11 is convenient for controlling positioning through the positioning button 6, and is convenient for resetting the positioning button 6 through the elastic piece 7; the tube bundle 3 can be adapted to telescopic joints with different sizes conveniently by arranging the through grooves, and the joint degree of the tube bundle 3 and the telescopic joints can be adjusted by clamping the pressing sheet 9 through the bolts; the expansion joint can be pressed in an auxiliary mode through the eccentric cam and the arc-shaped pulling piece, and the expansion joint is prevented from sliding downwards due to gravity.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A telescopic rod is characterized in that: the telescopic tube comprises a first telescopic joint (1) and a second telescopic joint (2) which are coaxially sleeved, wherein a limiting device is arranged between the first telescopic joint (1) and the second telescopic joint (2), the diameter of the first telescopic joint (1) is smaller than that of the second telescopic joint (2), the limiting device comprises a tube bundle (3) and a locking device, the locking device is fixedly connected with the tube bundle (3) through a bolt, the end diameters of the two ends of the tube bundle (3) are respectively matched with the outer diameters of the first telescopic joint (1) and the second telescopic joint (2), limiting bulges are arranged on the outer walls of the bottom ends of the first telescopic joint (1) and the second telescopic joint (2), a limiting groove (4) is arranged on the inner wall of one end, close to the first telescopic joint (1), of the tube bundle (3), the limiting groove (4) is matched with the limiting bulges, and the tube bundle (3) is blocked by the limiting bulges and can not be separated from the bottom end of the first telescopic joint (1), the outer walls of the first telescopic joint (1) and the second telescopic joint (2) are provided with a plurality of positioning holes (5), and the tube bundle (3) is provided with a positioning device (11).

2. A telescopic rod according to claim 1, characterized in that: positioner (11) are including positioning button (6), elastic component (7) and reference column (8), reference column (8) with positioning button (6) are articulated, reference column (8) diameter with the aperture of locating hole (5) suits, correspond on bundle (3) reference column (8) are opened porosely, reference column (8) are passed bundle (3) stretch into in locating hole (5), positioning button (6) with bundle (3) are articulated, positioning button (6) with be provided with elastic component (7) between bundle (3).

3. A telescopic rod according to claim 1, characterized in that: a through groove is formed in one side, away from the positioning device (11), of the tube bundle (3), pressing pieces (9) are arranged on two sides of the through groove, and pressing holes (10) are formed in the pressing pieces (9).

4. A telescopic rod according to claim 3, characterized in that: locking device is including compressing tightly piece and installed part, installed part one end with it is articulated to compress tightly the piece, the installed part other end is the threaded rod, and the threaded rod passes compress tightly hole (10) on tube bank (3) and fixed through the nut, it pulls the piece including eccentric cam and arc to compress tightly the piece, eccentric cam through the pivot with the installed part rotates to be connected, the arc pull the piece with eccentric cam fixed connection.