CN209977008U

CN209977008U - Telescopic rod

Info

Publication number: CN209977008U
Application number: CN201920444669.8U
Authority: CN
Inventors: 陈晓勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2020-01-21
Anticipated expiration: 2029-04-03

Abstract

The utility model discloses a telescopic link, establish inner tube and outer tube together including the cover, the inner of inner tube is equipped with a plurality of annular distribution's elastic arm and forms a section of thick bamboo chamber, the fixed arc that is equipped with on elastic arm's the inner wall is beated the arm, the frustum that slides the drive assembly who sets up in the outer tube inserts a section of thick bamboo intracavity, and the lateral surface of frustum and the inner contact connection of arc bullet arm, drive assembly includes at least one locking arm, the locking arm can slide along the guide way that is located the correspondence on the lateral wall of outer tube, the locking arm can be connected with the locking piece closure that is located the correspondence on the outer wall of inner tube, and simultaneously, the frustum plays the lateral surface that the arm made elastic arm and the medial surface in close contact with. The utility model discloses convenient operation, long service life.

Description

Telescopic rod

Technical Field

The utility model relates to a telescoping device technical field, concretely relates to telescopic link.

Background

Some have the article of action bars in daily life, for the convenience adapt to and accomodate, the action bars adopts the form of telescopic link usually, the telescopic link is because of its length or the high adaptation demand that satisfies through flexible regulating lever, for example the mop, the clothes-horse, the clothes hanger dries in the air, open-air walking stick etc, the telescopic link includes the outer tube usually and locates the inside pole of outer tube, the working length of telescopic link is adjusted to the extension length through adjusting the pole, and lock through locking device, consequently, locking device is vital to the normal use of telescopic link, common locking device adopts the connected mode of screw thread and nut, need rotatory ticket nut just can realize when locking or releasing, complex operation, and the screw thread appears the smooth silk with the nut cooperation easily, the phenomenon of dying of nibbling.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a convenient operation, and durable telescopic link.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a telescopic link, establishes inner tube and outer tube together including the cover, the inner of inner tube is equipped with the elastic arm that a plurality of annular distributes and forms a barrel chamber, the fixed arc that is equipped with on the inner wall of elastic arm plays the arm, slides and sets up drive assembly's in the outer tube frustum inserts the barrel chamber, just the lateral surface of frustum with the inner contact connection of arc bullet arm, drive assembly includes at least one locking arm, the locking arm can be followed and is located the guide way of correspondence on the lateral wall of outer tube slides, the locking arm can with be located the locking piece closure of correspondence on the outer wall of inner tube is connected, simultaneously, the frustum is through the extrusion the arc plays the arm and makes the lateral surface of elastic arm with the medial surface in close contact with of outer tube.

Furthermore, the drive assembly still include with the hole sliding fit's of outer tube slider with fixed the setting a pair of side arm on the slider, the side arm slides along the guide way that corresponds, the locking arm pin joint is on the side arm that corresponds, the locking arm through a extension spring with slider fixed connection.

Furthermore, the locking block is fixedly arranged on the outer side face of the corresponding elastic arm, a plurality of locking grooves which are distributed along the axial direction of the inner tube are formed in the outer side face of the locking block, and when the locking arm is locked with different locking grooves, the force exerted on the elastic arm by the frustum is different.

Furthermore, the opening of the arc-shaped elastic arm faces the frustum, and two ends of the arc-shaped elastic arm are pressed against the peripheral surface of the frustum.

Furthermore, a friction pad is arranged on the outer side surface of each elastic arm.

Furthermore, the side arm is fixedly connected to the sliding block through a bolt.

Further, the pair of side arms are 180 ° apart.

Further, the number of the elastic arms is six or eight.

According to the above technical solution, the utility model has the advantages that:

1. the inner pipe is locked or released by operating the driving assembly and the inner pipe to be close to each other and locked together or separating the driving assembly and the inner pipe from each other in the adjusting process, so that the inner pipe is locked

The process is convenient;

2. because the frustum is adopted to extrude the arc-shaped elastic arm and the elastic arm is in close contact with the inner wall of the outer tube,

the locking is carried out by adopting the locking mode of the locking arm and the locking block, thereby avoiding the situations of wire sliding and meshing and prolonging the service life of the telescopic rod.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Labeled as: the device comprises an inner tube 1, an elastic arm 11, a friction pad 12, a locking block 13, a locking groove 14, an arc elastic arm 15, an outer tube 2, a guide groove 21, a driving assembly 3, a sliding block 31, a frustum 32, a side arm 34, a locking arm 35 and a tension spring 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, 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.

Referring to fig. 1, a telescopic rod includes an inner tube 1 and an outer tube 2 sleeved together, the inner end of the inner tube 1 is provided with a plurality of elastic arms 11 distributed annularly to form a cylindrical cavity, an arc-shaped elastic arm 15 is fixedly arranged on the inner wall of the elastic arm 11, a frustum 32 of a driving assembly 3 arranged in the outer tube 2 in a sliding manner is inserted into the cylindrical cavity, the outer side surface of the frustum 32 is in contact connection with the inner end of the arc-shaped elastic arm 15, the driving assembly 3 includes at least one locking arm 35, the locking arm 35 can slide along a corresponding guiding groove 21 on the side wall of the outer tube 2, the locking arm 35 can be in locking connection with a corresponding locking block 13 on the outer wall of the inner tube 1, the locking block 13 and the corresponding locking arm 35 are located in the same guiding groove 21 to avoid the rotation of the inner tube 1, and at the same time, the frustum 32 makes the outer side surface of the elastic arm 11 and the inner side surface of the outer tube 2 in close contact with each other by squeezing, thereby achieving locking of the inner tube 1.

Preferably, the opening of the arc-shaped elastic arm 15 faces the frustum 32, and two ends of the arc-shaped elastic arm 15 are pressed against the outer peripheral surface of the frustum 32, so that the arc-shaped elastic arm 15 is conveniently deformed under stress.

Preferably, the number of said elastic arms 11 is six or eight.

Optimally, the number of the elastic arms 11 is eight, so that the elastic arms 11 are easy to deform, and the contact area between the elastic arms 11 and the inner side surface of the outer tube 2 is large.

The drive assembly 3 further comprises a slide block 31 which is in sliding fit with the inner hole of the outer tube 2 and a pair of side arms 34 which are fixedly arranged on the slide block 31, the side arms 34 slide along the corresponding guide grooves 21, the middle part of each lock arm 35 is pivoted on the corresponding side arm 34, each lock arm 35 is fixedly connected with the slide block 31 through a tension spring 4, the side arms 34 are fixedly connected on the slide block 31 through bolts, the slide block 31 is convenient to install, and the tension springs 4 enable the lock arms 35 and the lock blocks 13 to keep a locked state.

Preferably, the side arms 34 are 180 ° apart to provide a secure locking of the inner tube 1.

The locking blocks 13 are fixedly arranged on the outer side faces of the corresponding elastic arms 11, a plurality of locking grooves 14 distributed along the axial direction of the inner pipe 1 are formed in the outer side faces of the locking blocks 13, and the locking arms 35 and the different locking grooves 14 represent different insertion depths of the frustum 32 when locked, so that the frustum 32 exerts different forces on the elastic arms 11.

The outer side surface of each elastic arm 11 is provided with a friction pad 12, and when the inner tube 1 is locked, the friction force between the elastic arms 11 and the outer tube 2 is increased, so that the inner tube 1 and the outer tube 2 are reliably connected.

When the inner tube 1 needs to be released, the pair of locking arms 35 are held and pressed to enable the pair of locking arms 35 to overcome the tension of the corresponding tension springs 4 respectively to enable the locking arms 35 to be separated from the locking blocks 13, then the driving assembly 3 is enabled to move outwards, the length of the inner tube 1 is adjusted after the elastic arms 11 are reset, after the inner tube 1 is adjusted to the position, the driving assembly 3 is operated to move towards the inner tube 1, the pair of locking arms 35 are released after the driving assembly is moved to the position, and the locking arms 35 are locked with the corresponding locking blocks 13 under the action of the corresponding tension springs 4.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a telescopic link, establishes inner tube (1) and outer tube (2) together including the cover, its characterized in that, the inner of inner tube (1) is equipped with elastic arm (11) that a plurality of annular distributes and forms a barrel chamber, the fixed arc that is equipped with on the inner wall of elastic arm (11) plays arm (15), and the slip sets up frustum (32) of drive assembly (3) in outer tube (2) insert in the barrel chamber, just the lateral surface of frustum (32) with the inner contact of arc bullet arm (15) is connected, drive assembly (3) include at least one locking arm (35), locking arm (35) can be followed and are located corresponding guide way (21) on the lateral wall of outer tube (2) slide, locking arm (35) can with be located corresponding locking piece (13) lock connection on the outer wall of inner tube (1), simultaneously, frustum outer tube (32) are through the extrusion arc bullet arm (15) makes the lateral surface of elastic arm (11) with the lateral surface with outer tube (2) together (2) Are in close contact with the inner side surfaces of the two.

2. The telescopic rod according to claim 1, wherein the driving assembly (3) further comprises a sliding block (31) slidably engaged with the inner hole of the outer tube (2) and a pair of side arms (34) fixedly arranged on the sliding block (31), the side arms (34) slide along the corresponding guide slots (21), the locking arms (35) are pivotally connected to the corresponding side arms (34), and the locking arms (35) are fixedly connected with the sliding block (31) through a tension spring (4).

3. The telescopic rod according to claim 2, wherein the locking blocks (13) are fixedly arranged on the outer side surfaces of the corresponding elastic arms (11), a plurality of locking grooves (14) are formed in the outer side surfaces of the locking blocks (13) and distributed along the axial direction of the inner tube (1), and the force exerted on the elastic arms (11) by the frustum (32) is different when the locking arms (35) are locked with different locking grooves (14).

4. The telescopic rod according to claim 1, characterized in that the opening of the arc-shaped elastic arm (15) faces the frustum (32), and the two ends of the arc-shaped elastic arm (15) are pressed against the outer circumferential surface of the frustum (32).

5. A telescopic rod according to claim 1, characterized in that each elastic arm (11) is provided on its outer side with a friction pad (12).

6. The telescopic rod according to claim 2, characterized in that said side arms (34) are fixedly connected to said slider (31) by means of bolts.

7. A telescopic rod according to claim 6, characterized in that the side arms (34) differ by 180 °.

8. A telescopic rod according to claim 1, characterized in that the number of said elastic arms (11) is six or eight.