CN113757236A

CN113757236A - Telescopic pipe with quick locking structure

Info

Publication number: CN113757236A
Application number: CN202111185454.7A
Authority: CN
Inventors: 张路科; 赵志涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2021-12-07

Abstract

The invention relates to the technical field of hardware structural components, in particular to a telescopic tube with a quick locking structure, comprising an inner tube and an outer tube connected with an inner and outer shell. One end of the tube close to the inner tube is provided with a guide limiter, and the guide limiter includes a straight groove section extending along the length direction of the outer tube, and an arc groove section extending circumferentially from the straight groove section to the outer tube inner wall; the inner tube The end close to the outer tube has a sliding block protruding from the outer wall of the inner pipe; the sliding block can slide along the linear groove with the sliding of the inner pipe, and can enter the arc groove with the rotation of the inner pipe to The relative position of the inner tube and the outer tube is locked, the invention has a simple structure, is easy to be processed and popularized, can quickly lock and unlock the length of the telescopic tube, and the locked length is flexibly adjustable. of increased stability.

Description

Telescopic pipe with quick locking structure

Technical Field

The invention relates to the technical field of hardware structural components, in particular to a telescopic pipe with a quick locking structure.

Background

The telescopic pipe is a common mechanism, and is generally formed by sequentially sleeving a plurality of pipe units with different pipe diameters inside and outside. The telescopic pipe is applied to articles for daily use, often has good folding effect of accomodating, does not occupy too much space, also conveniently carries. However, the existing telescopic pipe is generally complex in structure, or does not have quick self-locking and unlocking effects, and is not high in stability.

Disclosure of Invention

First, technical problem to be solved

The invention aims to provide a telescopic pipe with a quick locking structure, which is simple in structure, easy to process and popularize, capable of quickly locking and unlocking the length of the telescopic pipe, flexible and adjustable in locking length, capable of increasing the damping fastening effect by locking, and greatly improving the stability.

Second, technical scheme

The invention is realized by the following technical scheme: the invention provides a telescopic pipe with a quick locking structure, which comprises an inner pipe and an outer pipe which are sleeved inside and outside, wherein the inner pipe can slide in the outer pipe to change the length of the inner pipe extending out of the outer pipe,

one end of the outer pipe close to the inner pipe is provided with a guide limiting piece, and the guide limiting piece is provided with a guide groove section and a clamping groove section which extends from the guide groove section to the side far away from the guide groove section;

one end of the inner pipe close to the outer pipe is provided with a sliding clamping block protruding out of the outer wall of the inner pipe;

the sliding clamping block can slide along the guide groove section along with the sliding of the inner pipe and can enter the clamping groove section along with the rotation of the inner pipe so as to lock the relative position of the inner pipe and the outer pipe.

Further, the guide groove section is a linear groove parallel to the length direction of the outer pipe, and the clamping groove section extends in an arc shape along the circumferential direction of the inner wall of the outer pipe.

Further, the guide limiting part comprises two arc-shaped plates which are oppositely attached and fixed on the inner wall of the outer pipe, a guide groove section for the sliding of the sliding clamping block is formed between the two arc-shaped plates, a clamping groove section which is connected with the guide groove section is formed in the side edge of each arc-shaped plate, and the clamping groove section extends along the circumferential direction of the inner wall of the outer pipe.

Further, the guide limiting part further comprises a limiting ring, the outer diameter of the limiting ring is larger than the inner diameter of the outer pipe, and the end parts of the two arc-shaped plates are fixedly connected to the limiting ring.

Furthermore, the outer tube is provided with a limiting hole, and the outer side of the arc-shaped plate is provided with a limiting lug clamped with the limiting hole.

Further, the inner end of the guide groove section forms a smooth transition for guiding the sliding fixture block into the guiding-in opening of the guide groove section.

Furthermore, at least one clamping groove section is arranged and distributed along the extending direction of the guide groove section; the sliding clamping blocks can be clamped into different clamping groove sections along with the rotation of the inner pipe.

Further, the one end that the inner tube is close to the outer tube is equipped with the buckle, the buckle is including inserting the main part in the inner tube and fixing the outside slip fixture block of main part, the perforation has been seted up to the outer wall of inner tube, the slip fixture block passes perforation and protrusion in the outer wall of inner tube.

Further, the sliding fixture block is integrally formed on the outer wall of the inner tube.

Further, the inner tube and the outer tube are two eccentric tubes with matching diameters, and the inner tube can rotate in the outer tube to lock the position.

Third, beneficial effect

Compared with the prior art, the invention has the following beneficial effects:

according to the telescopic pipe with the quick locking structure, when the inner pipe slides in the outer pipe, the sliding clamping block protruding out of the surface of the inner pipe slides in the guide groove section in the outer pipe, and after the inner pipe extends to a proper length, the sliding clamping block can be clamped into the clamping groove section by rotating the inner pipe, so that the relative position of the inner pipe and the outer pipe is locked, and the total length of the inner pipe extending out of the outer pipe is fixed; the invention has simple structure, low processing difficulty and convenient use.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a view of the mating structure of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 1;

FIG. 4 is a first embodiment of a guide stop;

FIG. 5 is a second embodiment of a guide stop;

FIG. 6 is an embodiment of the present invention;

FIG. 7 is an embodiment of an inner tube and a sliding cartridge;

FIG. 8 is another embodiment of the inner tube and the sliding cartridge;

FIG. 9 is a schematic cross-sectional view of an inner tube and an outer tube;

1-inner tube; 11-perforating; 2-an outer tube; 3-guiding a limiting part; 31-a guide groove section; 32-snap-in groove section; 3a 1-arc plate; 3a 2-stop collar; 3 b-a sleeve; 4-sliding the fixture block; 5-limiting holes; 6-a limit bump; 7-an introduction port; 8-buckling; 81-main body part.

Detailed Description

Closely cup joint inside and outside the hollow tube that a plurality of pipe diameters are different and form the structure of basic flexible pipe, its accessible is adjusted the less pipe length that stretches out of pipe diameter and is adjusted holistic length to conveniently accomodate and use. The invention realizes the total length of the fixed telescopic pipe by adding the stopping structure to the connecting part between the pipes with different pipe diameters, thereby leading the telescopic pipe to be used as a support or connecting part with fixed length.

Referring to fig. 1-2, the telescopic tube with a quick locking structure of the present invention includes an inner tube 1 and an outer tube 2, wherein the inner diameter of the outer tube 2 is not smaller than the outer diameter of the inner tube 1, the inner tube 1 is sleeved inside the outer tube, and the inner tube 1 can slide in the outer tube 2 to change the length extending out of the outer tube 2, so as to adjust the total external length of the telescopic tube. Wherein, be equipped with direction locating part 3 in the one end that outer tube 2 is close to inner tube 1, direction locating part 3 sets up in outer tube 2, has the slip fixture block 4 of protrusion in the outer wall of inner tube 1 in the one end that inner tube 1 is close to outer tube 2. The guide limiting piece 3 is provided with a guide groove section 31 and a clamping groove section 32, the guide groove section 31 is used for limiting the sliding path of the sliding clamping block 4, and the sliding path is preferably a linear groove parallel to the length direction of the outer tube 2, so that the insertion and the extraction are convenient; the clamping groove section 32 extends along the outer tube 2 from the guide groove section 31 to the side direction far away from the guide groove section 31, preferably extends in an arc shape along the circumferential direction of the inner wall of the outer tube 2 so as to facilitate rotation, and one end of the clamping groove section 32 is communicated with the guide groove section 31 continuously, wherein the guide groove section 31 can be single or multiple and uniformly distributed around the inner wall of the outer tube 2.

In the use, inner tube 1 slides in outer tube 2, and the guide way section 31 of slip fixture block 4 in outer tube 2 slides, after inner tube 1 extends to suitable length, can make slip fixture block 4 block go into to the card to go into groove section 32 through rotatory inner tube 1 to the relative position of locking inner tube 1 and outer tube 2, fixed inner tube 1 stretches out to the outside length of outer tube 2.

The above constitutes the basic structure of the present invention.

The structure of the guide limit stop 3 is further described below:

referring to fig. 4, two opposite arc-shaped plates 3a1 are fixedly attached to an inner wall of the outer tube 2 near the inner tube 1, at this time, the arc-shaped plates 3a1 have the same curvature as the inner wall of the outer tube 2, a guide groove section 31 for the sliding of the sliding fixture block 4 is formed between the two arc-shaped plates 3a1, a clamping groove section 32 connected with the guide groove section 31 is formed on the side edge of the arc-shaped plate 3a1, and the groove direction of the clamping groove section 32 extends along the circumferential direction of the inner wall of the outer tube 2. The two arc plates 3a1 are combined to form a guiding position-limiting member 3, and the sliding block 4 is matched with the guiding position-limiting member 3 to form a stopping structure of the telescopic tube. In this embodiment, arc 3a1 need not longer length, and it can set up the tip at outer tube 2, during the assembly, inserts inner tube 1 to outer tube 2 from the other end of outer tube 2 in, when needs are elongated, and pulling inner tube 1 enters into guide way section 31 to slip fixture block 4, continues to pull one section distance after, rotates inner tube 1 and makes slip fixture block 4 block go into to the draw-in groove section 32 to lock position between them. In this embodiment, the arc-shaped plate 3a1 may also be a single plate attached to the inner wall of the outer tube, or a plurality of plates uniformly distributed on the inner wall of the outer tube.

Referring to fig. 3, in order to facilitate the processing and accurately fix the relative position of the arc-shaped plate 3a1, a position-limiting ring 3a2 is disposed at the end of the arc-shaped plate 3a1, and the outer diameter of the position-limiting ring 3a2 is larger than the inner diameter of the outer tube 2. In this embodiment, the limiting ring 3a2 and the arc-shaped plate 3a1 form the guiding limiting member 3, and one, or two or more than two arc-shaped plates 3a1 are uniformly connected to the limiting ring 3a 2. In use, from the side of the outer pipe 2 close to the inner pipe 1, the limiting ring 3a2 is held and the two arc-shaped plates 3a1 are inserted into the outer pipe 2 for fixing, the limiting ring 3a2 is blocked by the pipe wall of the outer pipe 2, and the installation of the guide limiting piece 3 is completed. In addition, the inner end of the guide groove section 31 in this embodiment is open, and the outer end thereof is blocked by the stopper 3a2 to form a closed type, so that it is ensured that the inner tube 1 can be fixed in position when extended to the longest by using the shorter arc-shaped plate 3a1, and the inner tube 1 can be prevented from falling off from the outer tube 2.

In addition, for easy to assemble, can set up spacing hole 5 on outer tube 2, set up the spacing lug 6 with spacing hole 5 block in the outside of arc 3a1, thereby make the direction locating part 3 fix inside outer tube 2 through the cooperation of spacing hole 5 and spacing lug 6.

More specifically, in the above-described embodiment, when the inner tube 1 is pulled out from the outer tube 2, the slide latch 4 enters the guide groove section 31, and further, self-locking is achieved by rotating the inner tube 1. In the present embodiment, an introduction port 7 is formed at the inner end of the guide groove section 31, the width of the introduction port 7 is greater than the groove width of the guide groove section 31, and the introduction port 7 is gently transited, and can introduce the slide latch 4 into the guide groove section 31.

Referring to fig. 5, in an embodiment of the guiding and limiting member 3 of the present invention, only a single guiding groove section 31 is provided.

Referring to fig. 6, the number of the snap-in groove sections 32 is not limited to one, and a plurality of snap-in groove sections 32 may be provided, and the snap-in groove sections 32 are distributed along the extending direction of the guide groove section 31, so that the sliding snap-in block 4 can be snapped into different snap-in groove sections 32 to change the extending length of the inner tube 1, and the total length of the telescopic tube can be adjusted. In another embodiment, the number of the sliding blocks 4 corresponds to the number of the snap-in groove sections 32, and a plurality of sliding blocks 4 can be snapped into each snap-in groove section 32 along with the rotation of the inner tube 1, which is more stable than the cooperation of a single sliding block 4 and the snap-in groove section 32.

In addition, the guiding position-limiting element 3 can also be fixed in the outer tube 2 by gluing, welding or integral molding.

The sliding block 4 is further described below in cooperation with the inner tube 1:

fig. 3 shows a fixing manner of the sliding clamping block 4, one end of the inner tube 1 close to the outer tube 2 is provided with a buckle 8, the buckle 8 comprises a main body portion 81 capable of being inserted into the inner tube 1 and a sliding clamping block 4 fixed outside the main body portion 81, the outer wall of the inner tube 1 is provided with a through hole 11, and the sliding clamping block 4 passes through the through hole 11 and protrudes out of the outer wall of the inner tube 1, so that the assembly is convenient.

Fig. 7 shows another fixing manner of the sliding latch 4, in this embodiment, the sliding latch 4 is integrally formed on the outer wall of the inner tube 1.

In addition, the sliding latch 4 may also be the structure shown in fig. 8, that is, the sliding latch 4 is fixed on the outer wall of the tube body sleeved at the outer end of the inner tube 1.

In this embodiment, on the basis of all the above embodiments, please refer to fig. 9, the inner tube and the outer tube are two eccentric tube bodies with matched diameters, when in use, the inner tube is rotated to enable the sliding clamping block 4 to be clamped into the clamping groove section 32 to be locked, and meanwhile, the inner tube 1 is also rotated and deviated and is abutted against the inner wall of the outer tube 2 to increase damping, so as to realize the locked position; both locking structures cooperate to reach better locking effect.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.

Claims

1. A telescopic tube with a quick locking structure, comprising an inner tube and an outer tube which are connected inside and outside the inner tube, the inner tube can slide in the outer tube to change the length of its extension outside the outer tube, it is characterized in that,

One end of the outer tube close to the inner tube is provided with a guide stopper, and the guide stopper has a guide groove section and a snap-in groove section extending from the guide groove section to the side away from the guide groove section;

One end of the inner tube close to the outer tube has a sliding block protruding from the outer wall of the inner tube;

Wherein, the sliding block can slide along the guide groove section with the sliding of the inner tube, and can enter into the clip groove section with the rotation of the inner tube to lock the relative position of the inner tube and the outer tube.

2 . The telescopic tube with quick locking structure according to claim 1 , wherein the guide groove section is a straight groove parallel to the length direction of the outer tube, and the snap-in groove section is along the inner wall of the outer tube. 3 . The circumferential direction extends in an arc shape.

3 . The telescopic tube with a quick locking structure according to claim 2 , wherein the guiding and limiting member comprises two arc-shaped plates that are relatively fitted and fixed on the inner wall of the outer tube, and the two A guide groove section for the sliding block to slide is formed between the arc-shaped plates, a clip-in slot section that is continuous with the guide slot section is set on the side of the arc-shaped plate, and the clip-in slot section extends along the circumferential direction of the inner wall of the outer tube .

4 . The telescopic tube with a quick locking structure according to claim 3 , wherein the guiding and limiting member further comprises a limiting ring, the outer diameter of the limiting ring is larger than the inner diameter of the outer tube, and the two The end of the arc-shaped plate is fixedly connected to the limit ring.

5 . The telescopic tube with quick locking structure according to claim 4 , wherein the outer tube is provided with a limiting hole, and the outer side of the arc-shaped plate is provided with a limiting hole that engages with the limiting hole. 6 . bit bump.

6 . The telescopic tube with a quick locking structure according to claim 3 , wherein the inner end of the guide groove section forms a smooth transition to guide the sliding block into the guide groove section. 7 . import port.

7 . The telescopic tube with a quick locking structure according to claim 1 , wherein at least one snap-in groove section is provided, which is distributed along the extending direction of the guide groove section; the sliding block can follow the direction of the guide groove section. The inner tube is snapped into different snap-in groove segments by the rotation of the inner tube.

8 . The telescopic tube of claim 1 , wherein one end of the inner tube close to the outer tube is provided with a buckle, and the buckle comprises a main body portion that can be inserted into the inner tube. 9 . and a sliding block fixed on the outside of the main body, the outer wall of the inner pipe is provided with a perforation, the sliding block passes through the perforation and protrudes from the outer wall of the inner pipe.

9 . The telescopic tube with a quick locking structure according to claim 1 , wherein the sliding block is integrally formed on the outer wall of the inner tube. 10 .

10. The telescopic tube with a quick locking structure according to any one of claims 1-9, wherein the inner tube and the outer tube are two eccentric tube bodies with matching diameters, and the inner tube can be outside the Rotate inside the tube to lock the position.