Dust collector telescopic pipe with good sealing effect

Abstract

The telescopic pipe of the dust collector is good in sealing effect and comprises an upper pipe body and a lower pipe body, the bottom of the upper pipe body is fixedly connected with an outer limiting block, the top of the lower pipe body is fixedly connected with an inner limiting block, and a locking assembly is arranged at the connecting position of the upper pipe body and the lower pipe body. By means of the structure, the outer limiting block and the inner limiting block are arranged in the lock sleeve, after the telescopic length of the upper pipe body and the telescopic length of the lower pipe body are adjusted, the lock sleeve is screwed, the lock sleeve and the upper pipe body are fixedly connected in a threaded mode, then the air bag is inflated, the air bag is expanded, and the air bag is expanded, so that the joint of the upper pipe body and the lower pipe body is sealed; the sealing performance of the telescopic pipe is greatly improved, meanwhile, the telescopic pipe is very convenient to operate, maintain and the like, the telescopic rod does not need to be disassembled and assembled, parts do not need to be replaced, the service life of the telescopic rod is greatly prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaners, in particular to a telescopic tube of a vacuum cleaner with good sealing effect. Background Art

[0002] The working principle of a vacuum cleaner is based on simple physics: an electric motor drives a fan or impeller to rotate at high speed, creating negative pressure, which draws in dust and other fine particles. This negative pressure differential draws air and dust into the cleaner, where it is filtered out by the filtration system, ultimately releasing relatively clean air. The telescopic hose is a key component of a vacuum cleaner.

[0003] In the existing telescopic tube of a vacuum cleaner, after the telescopic tube is adjusted, air leakage often occurs in the connecting parts due to aging of the internal sealing ring, thereby reducing the working efficiency of the vacuum cleaner. When performing maintenance, the telescopic tube needs to be disassembled for replacement and maintenance, which is troublesome and inconvenient to operate and repair, and the cost is high. Utility Model Content

[0004] The purpose of the utility model is to provide a telescopic tube of a vacuum cleaner with good sealing effect, wherein an outer limit block and an inner limit block are arranged inside a locking sleeve, and after the telescopic length of the upper tube body and the lower tube body is adjusted, the locking sleeve is twisted to make the locking sleeve and the upper tube body threadedly connected and fixed, and then the airbag is inflated to expand the airbag. The expansion of the airbag not only seals the connection between the upper tube body and the lower tube body, but also forces the lower sealing ring to move downward, further sealing the locking sleeve and the lower tube body, thereby greatly improving the sealing effect of the telescopic tube. At the same time, operation and maintenance are very convenient, and there is no need to disassemble and assemble the telescopic rod or replace parts, thereby greatly extending the service life of the telescopic rod and reducing maintenance costs.

[0005] The cam is secured to the bottom of the tube and is secured to the bottom of the tube with a secure fit.

[0006] According to the telescopic tube for a vacuum cleaner with good sealing effect, the upper locking hole is provided with a thread, and the locking sleeve is threadedly connected to the upper tube body.

[0007] According to the telescopic tube of a vacuum cleaner with good sealing effect, the sealing ring is a soft rubber ring and is located below the airbag.

[0008] According to the telescopic tube of the vacuum cleaner with good sealing effect, the valve is located outside the lock sleeve

[0009] According to the telescopic tube of a vacuum cleaner with good sealing effect, anti-slip grooves are provided on the outer circumferential surface of the locking sleeve, and the locking sleeve is made of plastic.

[0010] According to the telescopic tube for a vacuum cleaner with good sealing effect, the upper tube body and the lower tube body are both made of metal.

[0011] According to the telescopic tube for a vacuum cleaner with good sealing effect, the upper tube body passes through the upper locking hole, and the top of the lower tube body passes through the lower locking hole.

[0012] According to the telescopic tube for a vacuum cleaner with good sealing effect, the outer limiting block and the inner limiting block are both located inside the upper locking hole.

[0013] The above scheme has the beneficial effects: by arranging the upper tube body, the lower tube body, the outer limit block, the inner limit block, the locking sleeve, the upper lock hole, the lower lock hole, the airbag, the air nozzle, the valve, the air hole and the sealing ring, the outer limit block and the inner limit block are arranged inside the locking sleeve. After the telescopic length of the upper tube body and the lower tube body is adjusted, the locking sleeve is twisted to make the locking sleeve and the upper tube body threaded and fixed, and then the airbag is inflated to expand the airbag. The expansion of the airbag not only seals the connection between the upper tube body and the lower tube body, but also forces the lower sealing ring to move downward, further sealing the locking sleeve and the lower tube body, greatly improving the sealing performance of the telescopic tube. At the same time, operation and maintenance are very convenient. There is no need to disassemble and assemble the telescopic rod, and no need to replace parts. The service life of the telescopic rod is greatly extended and the maintenance cost is reduced.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a front view of a telescopic tube of a vacuum cleaner with good sealing effect according to the utility model;

[0017] Figure 2 This is a cross-sectional view of a telescopic tube of a vacuum cleaner with good sealing effect according to the present invention;

[0018] Figure 3 This is a cross-sectional view of a telescopic tube of a vacuum cleaner with good sealing effect according to the utility model;

[0019] Figure 4 This is a cross-sectional view of a locking assembly of a telescopic tube of a vacuum cleaner with good sealing effect according to the utility model.

[0020] Legend:

[0021] 1. Upper tube body; 2. Lower tube body; 3. Locking assembly; 4. Outer limit block; 5. Inner limit block; 301. Locking sleeve; 302. Upper locking hole; 303. Lower locking hole; 304. Airbag; 305. Air nozzle; 306. Valve; 307. Air hole; 308. Sealing ring. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0023] Reference Figure 1-4The embodiment of the present invention is a telescopic tube for a vacuum cleaner with good sealing effect, which includes: an upper tube body 1 and a lower tube body 2. The upper tube body 1 and the lower tube body 2 are both made of metal, generally stainless steel tubes, aluminum tubes, iron tubes, etc. The bottom of the upper tube body 1 is fixedly connected with an outer limit block 4, and the top of the lower tube body 2 is fixedly connected with an inner limit block 5. A locking assembly 3 is provided at the connection between the upper tube body 1 and the lower tube body 2. The locking assembly 3 includes a locking sleeve 301, an upper locking hole 302, a lower locking hole 303, and an airbag 3 04, air nozzle 305, valve 306, air hole 307 and sealing ring 308, the outer circumferential surface of the lock sleeve 301 is provided with anti-slip lines, the lock sleeve 301 is made of plastic material, which is convenient to hold, the top of the lock sleeve 301 is provided with an upper lock hole 302, the upper lock hole 302 is provided with a thread, the lock sleeve 301 is threadedly connected to the upper tube body 1, the upper tube body 1 passes through the upper lock hole 302, the outer limit block 4 and the inner limit block 5 are both located inside the upper lock hole 302, and the bottom of the lock sleeve 301 is provided with a lower lock hole 303, the upper lock hole 302 is located above the lower lock hole 303, the lower lock hole 303 is tapered, the top of the lower tube 2 passes through the lower lock hole 303, an air bag 304 is provided inside the upper lock hole 302, an air nozzle 305 is fixedly connected to the circumferential surface of the air bag 304, a valve 306 is fixedly connected to the circumferential surface of the air nozzle 305, the valve 306 is located on the outside of the lock sleeve 301, an air hole 307 is provided on the circumferential surface of the lock sleeve 301, the air nozzle 305 is located inside the air hole 307, the air bag 304 is fixedly connected to the circumferential surface of the air nozzle 305, the valve 306 is located on the outside of the lock sleeve 301, and the air hole 307 is provided on the circumferential surface of the lock sleeve 301. The nozzle 305 is fixedly connected to the locking sleeve 301. The airbag 304 is inflated through the air nozzle 305 to expand the airbag 304, and then the airbag 304 forms a seal on the connection part. A sealing ring 308 is provided inside the lower locking hole 303. The sealing ring 308 is conical and is a soft rubber ring. It is located below the airbag 304. When the airbag 304 expands, the sealing ring 308 is squeezed and moved downward, thereby sealing the locking sleeve 301 below the lower tube body 2.

[0024] Working principle: When the locking sleeve 301 is turned, the locking sleeve 301 moves downward, thereby loosening the upper tube body 1 and the lower tube body 2, so as to adjust the length of the upper tube body 1 and the lower tube body 2. After the adjustment is completed, the locking sleeve 301 is turned to move upward, thereby locking the upper tube body 1 and the lower tube body 2, and then the air nozzle 305 is inflated to expand the airbag 304. During the expansion process of the airbag 304, a seal is formed on the connection, and at the same time, the sealing ring 308 below is compressed to strengthen the seal between the locking sleeve 301 and the lower tube body 2.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A telescopic tube for a vacuum cleaner with good sealing effect, comprising: The upper tube body (1) and the lower tube body (2) are characterized in that the bottom of the upper tube body (1) is fixedly connected with an outer limit block (4), the top of the lower tube body (2) is fixedly connected with an inner limit block (5), a locking assembly (3) is provided at the connection between the upper tube body (1) and the lower tube body (2), the locking assembly (3) comprises a locking sleeve (301), an upper locking hole (302), a lower locking hole (303), an air bag (304), an air nozzle (305), a valve (306), an air hole (307) and a sealing ring (308), the top of the locking sleeve (301) is provided with an upper locking hole (302), the bottom of the locking sleeve (301) is provided with a lower locking hole (303), The upper lock hole (302) is located above the lower lock hole (303), and the lower lock hole (303) is tapered. An air bag (304) is provided inside the upper lock hole (302), and an air nozzle (305) is fixedly connected to the circumferential surface of the air bag (304), and a valve (306) is fixedly connected to the circumferential surface of the air nozzle (305). An air hole (307) is provided on the circumferential surface of the lock sleeve (301), and the air nozzle (305) is located inside the air hole (307). The air nozzle (305) is fixedly connected to the lock sleeve (301), and a sealing ring (308) is provided inside the lower lock hole (303), and the sealing ring (308) is tapered.

2. A telescopic tube for a vacuum cleaner with good sealing effect according to claim 1, characterized in that: The upper locking hole (302) is provided with a thread, and the locking sleeve (301) is threadedly connected to the upper tube body (1).

3. The telescopic tube for vacuum cleaner with good sealing effect according to claim 1, characterized in that: The sealing ring (308) is a soft rubber ring and is located below the airbag (304).

4. The telescopic tube for a vacuum cleaner with good sealing effect according to claim 1, characterized in that: The valve (306) is located outside the locking sleeve (301).

5. The telescopic tube for vacuum cleaner with good sealing effect according to claim 1, characterized in that: Anti-slip patterns are provided on the outer circumferential surface of the lock sleeve (301), and the lock sleeve (301) is made of plastic.

6. The telescopic tube for a vacuum cleaner with good sealing effect according to claim 1, characterized in that: The upper tube body (1) and the lower tube body (2) are both made of metal.

7. The telescopic tube for a vacuum cleaner with good sealing effect according to claim 1, characterized in that: The upper tube body (1) passes through the upper locking hole (302), and the top of the lower tube body (2) passes through the lower locking hole (303).

8. The telescopic tube for a vacuum cleaner with good sealing effect according to claim 1, characterized in that: The outer limit block (4) and the inner limit block (5) are both located inside the upper locking hole (302).

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