Positioning mechanism for telescopic hard tube of dust collector

Abstract

The utility model discloses a positioning mechanism for a telescopic hard tube of a dust collector. The positioning mechanism comprises an outer tube and an inner tube, a dust collection hose is fixedly installed on the side wall of the outer pipe, one end of the inner pipe is rotationally communicated with a dust collector working head, the inner pipe slides in the outer pipe, first sliding rods symmetrically penetrate through the side wall of the outer pipe in a sliding connection mode, one ends of the first sliding rods are fixedly connected with first wedge-shaped blocks, and second wedge-shaped blocks are symmetrically and fixedly connected to the side wall of the inner pipe. When the third wedge-shaped block moves to push the first wedge-shaped block to move, the first sliding rod can be driven to move and the first spring is driven to stretch, and when the third wedge-shaped block completely moves to the first wedge-shaped block, the first wedge-shaped block moves to the initial position again under the elastic action of the first spring, and the first wedge-shaped block moves to the initial position again. And the side wall of the third wedge block abuts against the side wall of the first wedge block, the piston plate abuts against the side wall of the other side of the first wedge block, then the positioning process that the inner pipe extends out of the outer pipe is completed, and the operation process is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic hard tube positioning mechanisms, in particular to a telescopic hard tube positioning mechanism for a vacuum cleaner. Background Art

[0002] Vacuum cleaners can be divided into vertical, horizontal and portable types according to their structure. The working principle of a vacuum cleaner is to use an electric motor to drive the blades to rotate at high speed, generate negative air pressure in the sealed shell, and absorb dust. Vacuum cleaners are mainly divided into three types: household vacuum cleaners, commercial vacuum cleaners and industrial vacuum cleaners.

[0003] The existing telescopic hard tube positioning mechanism of the vacuum cleaner often fixes the extended length of the inner tube by using a threaded sleeve, but this often squeezes the side wall of the inner tube or the outer tube, which may cause a certain degree of damage to the side wall of the inner tube or the outer tube. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a telescopic hard tube positioning mechanism for a vacuum cleaner.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A telescopic hard tube positioning mechanism for a vacuum cleaner, comprising:

[0007] Outer tube and inner tube;

[0008] A dust suction hose is fixedly installed on the side wall of the outer tube, one end of the inner tube is rotatably connected to a dust cleaner working head, the inner tube slides inside the outer tube, the side wall of the outer tube is symmetrically penetrated and slidably connected with a first sliding rod, one end of the first sliding rod is fixedly connected with a first wedge block, the side wall of the inner tube is symmetrically fixedly connected with a second wedge block, the side wall of the inner tube is symmetrically fixedly connected with a third wedge block, the side wall of the outer tube is symmetrically penetrated and slidably connected with a second sliding rod, one end of the second sliding rod is fixedly connected with a fourth wedge block, and the side wall of the inner tube is symmetrically fixedly connected with a fifth wedge block.

[0009] Preferably, the other end of the first sliding rod is fixedly connected to a first pulling plate, and a first spring is sleeved on a side wall of the first sliding rod.

[0010] Preferably, the other end of the second sliding rod is fixedly connected to a second pull plate, and the side wall of the second sliding rod is sleeved with a second spring.

[0011] Preferably, one end of the first spring is fixedly connected to the outer tube side wall, the other end of the first spring is fixedly connected to the adjacent first pull plate side wall, one end of the second spring is fixedly connected to the outer tube side wall, and the other end of the second spring is fixedly connected to the adjacent second pull plate side wall.

[0012] Preferably, the side wall of the first wedge block abuts against the side wall of the adjacent second wedge block, and the side wall of the fourth wedge block abuts against the side wall of the adjacent fifth wedge block.

[0013] Preferably, the side wall of the inner tube is fixedly connected with a piston plate, and the side wall of the piston plate and the inner wall of the outer tube are sealed and slidable.

[0014] Beneficial effects of the utility model:

[0015] 1. In the utility model, by setting structures such as the first wedge block, the third wedge block and the piston plate, when the third wedge block moves to the first time and slides against the side wall of the first wedge block, it will push the first wedge block to move, thereby driving the first slide bar to move and driving the first spring to stretch; when the third wedge block is completely moved to the first wedge block, the first wedge block moves to the initial position again under the elastic action of the first spring, and then the side wall of the third wedge block is against the side wall of the first wedge block, and the piston plate is against the other side wall of the first wedge block, thereby completing the positioning process of the inner tube extending out of the outer tube.

[0016] 2. In the utility model, by providing the second wedge block, the third wedge block and the fourth wedge block and other structures, when the inner tube needs to be retracted into the inner tube, the first pull plate is pulled to make the third wedge block move to the other side of the first wedge block, so that the inner tube can move, and when the fifth wedge block again abuts against the side wall of the fourth wedge block, the fifth wedge block pushes the fourth wedge block to move, and when the fifth wedge block is completely moved to the other side of the fourth wedge block, under the elastic action of the second spring, the fourth wedge block again abuts against the side wall of the fifth wedge block, and at this time the first wedge block and the second wedge block also abut against each other again, thereby completing the positioning process of retracting the inner tube into the inner tube, and the whole process is relatively simple to operate, and the inner tube is not squeezed, and the inner tube will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the appearance of a telescopic hard tube positioning mechanism for a vacuum cleaner.

[0018] Figure 2 The utility model is a schematic diagram of the internal structure of a telescopic hard tube positioning mechanism for a vacuum cleaner.

[0019] Figure 3 for Figure 2 A magnified schematic diagram of the structure of part A.

[0020] Figure 4 for Figure 2 A magnified schematic diagram of the structure of part B.

[0021] In the figure: 1 outer tube, 2 inner tube, 3 vacuum hose, 4 vacuum cleaner working head, 5 first slide bar, 6 first wedge block, 7 second wedge block, 8 first pull plate, 9 first spring, 10 third wedge block, 11 piston plate, 12 second slide bar, 13 second pull plate, 14 second spring, 15 fourth wedge block, 16 fifth wedge block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 4 , a vacuum cleaner telescopic hard tube positioning mechanism, comprising:

[0024] Outer tube 1 and inner tube 2;

[0025] A dust suction hose 3 is fixedly installed on the side wall of the outer tube 1, one end of the inner tube 2 is rotatably connected to the dust collector working head 4, the inner tube 2 slides inside the outer tube 1, and the side wall of the outer tube 1 is symmetrically penetrated and slidably connected with a first slide rod 5, one end of the first slide rod 5 is fixedly connected with a first wedge block 6, the side wall of the inner tube 2 is symmetrically fixedly connected with a second wedge block 7, the side wall of the inner tube 2 is symmetrically fixedly connected with a third wedge block 10, the side wall of the outer tube 1 is symmetrically penetrated and slidably connected with a second slide rod 12, one end of the second slide rod 12 is fixedly connected with a fourth wedge block 15, and the side wall of the inner tube 2 is symmetrically fixedly connected with a fifth wedge block 16.

[0026] The other end of the first slide bar 5 is fixedly connected with a first pull plate 8 , and a first spring 9 is sleeved on a side wall of the first slide bar 5 .

[0027] The other end of the second slide bar 12 is fixedly connected to a second pull plate 13 , and a second spring 14 is sleeved on a side wall of the second slide bar 12 .

[0028] One end of the first spring 9 is fixedly connected to the side wall of the outer tube 1, and the other end of the first spring 9 is fixedly connected to the side wall of the adjacent first pull plate 8. One end of the second spring 14 is fixedly connected to the side wall of the outer tube 1, and the other end of the second spring 14 is fixedly connected to the side wall of the adjacent second pull plate 13.

[0029] The side wall of the first wedge block 6 abuts against the side wall of the adjacent second wedge block 7 , and the side wall of the fourth wedge block 15 abuts against the side wall of the adjacent fifth wedge block 16 .

[0030] The side wall of the inner tube 2 is fixedly connected with a piston plate 11, and the side wall of the piston plate 11 and the inner wall of the outer tube 1 are sealed and slidable. The piston plate 11 can block the gap between the inner tube 2 and the outer tube 1, thereby preventing air from flowing through the gap between the side wall of the inner tube 2 and the side wall of the outer tube 1.

[0031] In the present invention, when the position of the inner tube 2 needs to be adjusted, the second pull plate 13 is first pulled, the second pull plate 13 drives the second slide bar 12 to move, and the second slide bar 12 drives the fourth wedge block 15 to move, so that the side wall of the fourth wedge block 15 no longer abuts against the side wall of the fifth wedge block 16, and the inner tube 2 can be moved at this time. When the third wedge block 10 moves to abut against the side wall of the first wedge block 6, the third wedge block 10 continues to move, thereby pushing the first wedge block 6 to move along the side wall direction of the first slide bar 5, thereby driving the first slide bar 5 to move. The rod 5 moves and drives the first spring 9 to stretch. When the third wedge block 10 is completely moved to the other side of the first wedge block 6, the first slide bar 5 is reset under the elastic action of the first spring 9, and then the side wall of the first wedge block 6 and the side wall of the fifth wedge block 16 are abutted, so that the inner tube 2 cannot be retracted into the outer tube 1. At this time, the side wall of the piston plate 11 and the side wall of the first wedge block 6 away from the third wedge block 10 are abutted, so that the inner tube 2 can no longer move outward. At this time, the inner tube 2 is stuck and cannot be extended or retracted, and then the inner tube 2 completes the positioning;

[0032] When it is necessary to retract the inner tube 2 back into the outer tube 1, the first pull plate 8 is pulled again, and the first slide bar 5 drives the first wedge block 6 to move, and then the third wedge block 10 can move. At this time, the inner tube 2 is retracted back into the outer tube 1. When the fifth wedge block 16 slides against the side wall of the fourth wedge block 15 again, the fourth wedge block 15 drives the second slide bar 12 to move, and the second slide bar 12 drives the second spring 14 to stretch. When the fourth wedge block 15 moves to the other side of the fifth wedge block 16, under the elastic action of the second spring 14, the side walls of the fourth wedge block 15 and the fifth wedge block 16 are against each other. At this time, the first wedge block 6 is against the second wedge block 7 again, and the inner tube 2 cannot move toward the outside of the outer tube 1, thereby completing the retraction process.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum cleaner telescopic hard tube positioning mechanism, characterized in that: include: An outer tube (1) and an inner tube (2); A dust suction hose (3) is fixedly installed on the side wall of the outer tube (1); one end of the inner tube (2) is rotatably connected to a dust collector working head (4); the inner tube (2) slides inside the outer tube (1); a first sliding rod (5) is symmetrically penetrated and slidably connected to the side wall of the outer tube (1); one end of the first sliding rod (5) is fixedly connected to a first wedge block (6); a second wedge block (7) is symmetrically fixedly connected to the side wall of the inner tube (2); a third wedge block (10) is symmetrically fixedly connected to the side wall of the inner tube (2); a second sliding rod (12) is symmetrically penetrated and slidably connected to the side wall of the outer tube (1); one end of the second sliding rod (12) is fixedly connected to a fourth wedge block (15); and a fifth wedge block (16) is symmetrically fixedly connected to the side wall of the inner tube (2).

2. A vacuum cleaner telescopic tube positioning mechanism according to claim 1, characterized in that: The other end of the first sliding rod (5) is fixedly connected to a first pulling plate (8), and the side wall of the first sliding rod (5) is sleeved with a first spring (9).

3. A vacuum cleaner telescopic tube positioning mechanism according to claim 2, characterized in that: The other end of the second sliding rod (12) is fixedly connected to a second pull plate (13), and the side wall of the second sliding rod (12) is sleeved with a second spring (14).

4. A vacuum cleaner telescopic tube positioning mechanism according to claim 3, characterized in that: One end of the first spring (9) is fixedly connected to the side wall of the outer tube (1), and the other end of the first spring (9) is fixedly connected to the side wall of the adjacent first pull plate (8). One end of the second spring (14) is fixedly connected to the side wall of the outer tube (1), and the other end of the second spring (14) is fixedly connected to the side wall of the adjacent second pull plate (13).

5. A vacuum cleaner telescopic tube positioning mechanism according to claim 4, characterized in that: The side wall of the first wedge block (6) abuts against the side wall of the adjacent second wedge block (7), and the side wall of the fourth wedge block (15) abuts against the side wall of the adjacent fifth wedge block (16).

6. A vacuum cleaner telescopic tube positioning mechanism according to claim 5, characterized in that: The side wall of the inner tube (2) is fixedly connected to a piston plate (11), and the side wall of the piston plate (11) and the inner wall of the outer tube (1) are sealed and slidable.

Images