Dust collection pipe capable of stretching out and drawing back in two directions

Abstract

The utility model discloses a bidirectional telescopic dust collection pipe, which belongs to the technical field of dust collection equipment, and is characterized by comprising a sleeve, a telescopic mechanism is arranged in the sleeve, a sealing assembly is arranged in the telescopic mechanism, the bottom of a fixing bolt abuts against the surface of a front cylinder, and a locking bolt is in threaded connection with the top of the sleeve. The bottom of the fixing bolt abuts against the surface of the rear cylinder, the fixing bolt is arranged on one side of the locking bolt, the length of the dust collection pipe can be adjusted by arranging the telescopic mechanism, the sealing effect during adjustment of the dust collection pipe can be improved, and in the prior art, a telescopic dust collection pipe can only improve the telescopic amount and cannot achieve complete sealing; by arranging the sealing assembly, the sleeve has the sealing effect, the dust collection effect of the dust collector cannot be affected by sealing of the interior of the sleeve, and the problem that in the prior art, the interior of the sleeve is not sealed is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collection equipment, in particular to a dust collection tube which can be telescopic in both directions. Background Art

[0002] A telescopic vacuum hose is a retractable hose, usually made of plastic or rubber. It can easily connect the vacuum cleaner head to the vacuum cleaner and can also be used to clean hard-to-reach corners and crevices. The telescopic vacuum hose has the advantages of flexibility, portability, and ease of use. It is widely used in cleaning work in homes, offices, and industrial sites. When choosing a telescopic vacuum hose, you need to consider factors such as its material, size, purpose, and occasion of use. Common materials include PVC, rubber, and silicone. PVC has good durability and high temperature resistance, while rubber and silicone have good softness and wear resistance. In terms of size, you need to choose the appropriate length and diameter according to the place of use and the size of the items to be cleaned. In addition, you also need to consider the purpose and occasion of the telescopic vacuum hose, such as whether it needs waterproof, anti-static and other functions.

[0003] The telescopic tube of the existing telescopic vacuum cleaner is structurally such that the vacuum cleaner tube can only be extended to a certain extent in the length direction of the tube, and has the defect of low extension amount.

[0004] The Chinese utility model patent with the current announcement number: CN213551545U discloses a vacuum cleaner tube with a two-way telescopic function, including an outer tube, wherein the outer tube is slidably connected to an inner tube at both ends along its length direction, and a locking assembly for locking the inner tube is provided between each inner tube and the outer tube. The overall effect is to increase the telescopic amount of the telescopic tube while maintaining the same length in the contracted state.

[0005] In view of the above problems, existing patents have provided solutions, but the telescopic vacuum tube can only increase the telescopic amount and cannot achieve a perfect seal, which in turn affects the vacuuming effect of the telescopic tube.

[0006] Therefore, a bidirectionally retractable dust suction tube is proposed. Utility Model Content

[0007] The utility model provides a vacuum tube capable of bidirectional extension, aiming to solve the problem that the existing vacuum tube capable of bidirectional extension can only increase the extension amount but cannot achieve perfect sealing, which in turn affects the vacuuming effect of the vacuum tube.

[0008] The utility model is realized in this way: a vacuum tube capable of bidirectional extension and retraction comprises a sleeve, a retractable mechanism is arranged inside the sleeve, a sealing assembly is arranged inside the retractable mechanism, and the sleeve is split into upper and lower parts;

[0009] The telescopic mechanism includes a front cylinder, a rear cylinder, a bellows, a fixing bolt and a locking bolt. The front cylinder is slidably connected to the interior of the sleeve, the rear cylinder is arranged on the other side of the sleeve, the bellows is arranged at one end of the front cylinder, and the other end of the bellows is fixedly connected to the interior of the sleeve. The fixing bolt is threadedly connected to the top of the sleeve, and the bottom of the fixing bolt abuts against the surface of the front cylinder. The locking bolt is threadedly connected to the top of the sleeve, and the bottom of the fixing bolt abuts against the surface of the rear cylinder. The fixing bolt is set on one side of the locking bolt.

[0010] In order to maintain the sealing effect of the dust suction tube after it is extended and retracted, a dust suction tube that can be retracted in both directions is preferably used in the utility model. The sealing assembly includes a sealing strip, a protective pad and an auxiliary strip. The sealing strip is arranged at the connection inside the sleeve, the protective pad is arranged on the outside of the rear tube, and the auxiliary strip is arranged on the inner wall of the sleeve and is used in conjunction with the protective pad.

[0011] In order to make the front tube easier to hold, as a preferred bidirectionally retractable vacuum tube of the utility model, the surface of the front tube is provided with a gripping portion for easy holding, and the surface of the gripping portion is provided with a gripping groove for increasing the friction between the palm and the gripping portion.

[0012] In order to make the rear tube easier to hold, as a preferred bidirectionally retractable vacuum tube of the present invention, the surface of the rear tube is provided with a sponge ring for easy grasping, the sponge ring is located on one side of the sleeve, and the sponge ring is made of sponge.

[0013] In order to reduce the resistance of the gas in the rear tube, as a preferred bidirectionally retractable dust suction tube of the utility model, an air guide portion for guiding air is provided on one side of the rear tube, and the cross-sectional shape of the air guide portion is triangular.

[0014] In order to increase the gas in the front cylinder, as a preferred bidirectionally retractable dust suction tube of the utility model, the internal space of the front cylinder gradually becomes smaller from the entrance.

[0015] In order to increase the service life of the front cylinder and the inner cylinder, as a preferred bidirectionally retractable vacuum tube of the present invention, the front cylinder and the rear cylinder are both made of PVC material, and the surfaces of the front cylinder and the rear cylinder are treated for wear resistance.

[0016] In order to increase the friction effect on the surface of the sleeve, as a preferred bidirectionally retractable dust suction tube of the present invention, a protrusion is provided on the top of the sleeve, and a plurality of the protrusions are arranged in an array on the top of the sleeve in sequence.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model can adjust the length of the dust suction tube by setting a telescopic mechanism, and can increase the sealing effect of the dust suction tube when adjusted, thereby effectively solving the problem in the prior art that the telescopic dust suction tube can only increase the telescopic amount but cannot achieve perfect sealing, which affects the dust suction effect of the telescopic tube.

[0019] 2. The utility model achieves a sealing effect for the sleeve itself by providing a sealing component, so that the internal seal of the sleeve will not affect the dust collection effect of the vacuum cleaner, thereby effectively solving the problem of the internal sealing of the sleeve existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the overall structure diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of a left-side stereoscopic section of the present invention;

[0022] Figure 3 It is a schematic diagram of the rear barrel, locking bolt and auxiliary strip of the utility model;

[0023] Figure 4 It is a schematic diagram of the front cylinder, bellows and fixing bolts of the utility model;

[0024] Figure 5 It is a schematic diagram of the right view of the utility model.

[0025] Description of the numbers in the figure:

[0026] 1. Sleeve; 2. Telescopic mechanism; 3. Sealing assembly; 4. Grip part; 5. Grip groove; 6. Sponge ring; 7. Air guide part; 8. Raised part; 201. Front tube; 202. Rear tube; 203. Bellows; 204. Fixing bolt; 205. Locking bolt; 301. Sealing strip; 302. Protective pad; 303. Auxiliary strip. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] See also Figure 1-5 The utility model provides a technical solution: a bidirectionally retractable vacuum tube, comprising a sleeve 1, a retractable mechanism 2 is arranged inside the sleeve 1, a sealing assembly 3 is arranged inside the retractable mechanism 2, and the sleeve 1 is split into upper and lower parts;

[0029] The telescopic mechanism 2 includes a front cylinder 201, a rear cylinder 202, a bellows 203, a fixing bolt 204 and a locking bolt 205. The front cylinder 201 is slidably connected to the inside of the sleeve 1, the rear cylinder 202 is arranged on the other side of the sleeve 1, the bellows 203 is arranged at one end of the front cylinder 201, and the other end of the bellows 203 is fixedly connected to the inside of the sleeve 1, the fixing bolt 204 is threadedly connected to the top of the sleeve 1, and the bottom of the fixing bolt 204 is against the surface of the front cylinder 201, the locking bolt 205 is threadedly connected to the top of the sleeve 1, and the bottom of the fixing bolt 204 is against the surface of the rear cylinder 202, and the fixing bolt 204 is set on one side of the locking bolt 205.

[0030] In this embodiment: by setting the front cylinder 201, the rear cylinder 202, the bellows 203, the fixing bolt 204 and the locking bolt 205, the front cylinder 201 and the rear cylinder 202 are contracted inside the sleeve 1, and the lengths of the front cylinder 201, the rear cylinder 202 and the sleeve 1 can be replaced according to the need, and the bellows 203 can ensure relative sealing when the front cylinder 201 is extended and retracted. When the front cylinder 201 and the rear cylinder 202 are extended and retracted, the fixing bolt 204 and the locking bolt 205 can be used to lock the front cylinder 201 and the rear cylinder 202 respectively.

[0031] As a technical optimization solution of the utility model, the sealing assembly 3 includes a sealing strip 301, a protective pad 302 and an auxiliary strip 303. The sealing strip 301 is arranged at the connection inside the sleeve 1, the protective pad 302 is arranged on the outside of the rear tube 202, and the auxiliary strip 303 is arranged on the inner wall of the sleeve 1 and used in conjunction with the protective pad 302.

[0032] In this embodiment: by providing a sealing strip 301, a protective pad 302 and an auxiliary strip 303, the sealing strip 301 can ensure the sealing of the sleeve 1 at the connection position of the sleeve 1, the protective pad 302 can increase the friction between the rear tube 202 and the edge of the sleeve 1, and the auxiliary strip 303 can cooperate with the protective pad 302 and the auxiliary strip 303 to achieve sealing when the rear tube 202 moves in the sleeve 1.

[0033] As a technical optimization solution of the utility model, the surface of the front tube 201 is provided with a gripping portion 4 for easy gripping, and the surface of the gripping portion 4 is provided with a gripping groove 5 for increasing the friction between the palm and the gripping portion 4.

[0034] In this embodiment, by providing the gripping portion 4 and the gripping groove 5 , the friction between the front cylinder 201 and the operator's palm can be increased when the user grips the front cylinder 201 , making it more convenient for the user to grip the front cylinder 201 .

[0035] As a technical optimization solution of the utility model, a sponge ring 6 which is easy to grasp is provided on the surface of the rear tube 202. The sponge ring 6 is located on one side of the sleeve 1 and is made of sponge.

[0036] In this embodiment, the sponge ring 6 is provided to make the rear tube 202 easier to hold.

[0037] As a technical optimization solution of the present invention, an air guide portion 7 for guiding air is provided on one side of the rear tube 202, and the cross-sectional shape of the air guide portion 7 is a triangle.

[0038] In this embodiment, the air guide portion 7 is provided so that when the gas and dust enter the rear tube 202 , they can follow the surface of the air guide portion 7 , thereby reducing the resistance of the gas in the rear tube 202 .

[0039] As a technical optimization solution of the present invention, the internal space of the front cylinder 201 gradually becomes smaller from the entrance.

[0040] In this embodiment, the internal space of the front cylinder 201 is gradually reduced from the entrance, so that the air pressure increases when the air enters the front cylinder 201 due to the reduced space, and the flow rate of the air flow in the front cylinder 201 is accelerated.

[0041] As a technical optimization solution of the present invention, the materials of the front cylinder 201 and the rear cylinder 202 are both PVC materials, and the surfaces of the front cylinder 201 and the rear cylinder 202 are treated to be wear-resistant.

[0042] In this embodiment, the materials of the front cylinder 201 and the rear cylinder 202 are more suitable for use, and the surfaces of the front cylinder 201 and the rear cylinder 202 are treated for wear resistance to reduce the possibility of surface scratches.

[0043] As a technical optimization solution of the present invention, a protrusion 8 is provided on the top of the sleeve 1 , and a plurality of protrusions 8 are arranged in an array on the top of the sleeve 1 in sequence.

[0044] In this embodiment, the protrusion 8 is provided to increase the friction force when the user holds the sleeve 1.

[0045] Working principle: First, by contracting the front tube 201 and the rear tube 202 inside the sleeve 1, the lengths of the front tube 201, the rear tube 202 and the sleeve 1 can be replaced as needed, the bellows 203 can ensure relative sealing when the front tube 201 is extended and retracted, and when the front tube 201 and the rear tube 202 are extended and retracted, the fixing bolt 204 and the locking bolt 205 can be used to lock the front tube 201 and the rear tube 202 respectively, the sealing strip 301 is used to ensure the sealing of the sleeve 1 at the connection position of the sleeve 1, the protective pad 302 is used to increase the friction between the rear tube 202 and the edge of the sleeve 1, and the auxiliary strip 303 is used to make the protective pad 302 and the auxiliary strip 303 cooperate to achieve sealing when the rear tube 202 moves in the sleeve 1, and the setting of the gripping portion 4 and the gripping groove 5 can facilitate the user to grip When holding the front cylinder 201, the friction between the front cylinder 201 and the operator's palm is increased, so that the user can hold the front cylinder 201 more conveniently. By setting the sponge ring 6, the rear cylinder 202 can be easily held. By setting the air guide part 7, the gas and dust can follow the surface of the air guide part 7 when entering the rear cylinder 202, thereby reducing the resistance of the gas in the rear cylinder 202. By setting the internal space of the front cylinder 201 to gradually become smaller from the entrance, the gas enters the interior of the front cylinder 201 and the air pressure increases due to the smaller space, so that the flow rate of the airflow in the front cylinder 201 is accelerated. By setting the materials of the front cylinder 201 and the rear cylinder 202 to be more suitable for use, and the surfaces of the front cylinder 201 and the rear cylinder 202 are treated with wear resistance, the possibility of surface scratches is reduced. By setting the raised part 8, the friction is increased when the user holds the sleeve 1.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum tube capable of bidirectional extension and retracting, comprising a sleeve (1), characterized in that: A telescopic mechanism (2) is arranged inside the sleeve (1), a sealing assembly (3) is arranged inside the telescopic mechanism (2), and the sleeve (1) is split into upper and lower parts; The telescopic mechanism (2) comprises a front cylinder (201), a rear cylinder (202), a bellows (203), a fixing bolt (204) and a locking bolt (205); the front cylinder (201) is slidably connected to the interior of the sleeve (1); the rear cylinder (202) is arranged on the other side of the sleeve (1); the bellows (203) is arranged at one end of the front cylinder (201); the other end of the bellows (203) is fixedly connected to the interior of the sleeve (1); the fixing bolt (204) is threadedly connected to the top of the sleeve (1), and the bottom of the fixing bolt (204) abuts against the surface of the front cylinder (201); the locking bolt (205) is threadedly connected to the top of the sleeve (1), and the bottom of the fixing bolt (204) abuts against the surface of the rear cylinder (202); and the fixing bolt (204) is set on one side of the locking bolt (205).

2. The bidirectionally retractable dust suction tube according to claim 1, characterized in that: The sealing assembly (3) comprises a sealing strip (301), a protective pad (302) and an auxiliary strip (303); the sealing strip (301) is arranged at a connection in the sleeve (1); the protective pad (302) is arranged on the outside of the rear sleeve (202); and the auxiliary strip (303) is arranged on the inner side wall of the sleeve (1) and is used in conjunction with the protective pad (302).

3. The bidirectionally retractable dust suction tube according to claim 1, characterized in that: The surface of the front tube (201) is provided with a gripping portion (4) for easy gripping, and the surface of the gripping portion (4) is provided with a gripping groove (5) for increasing the friction between the palm and the gripping portion (4).

4. The bidirectionally retractable dust suction tube according to claim 1, characterized in that: The surface of the rear tube (202) is provided with a sponge ring (6) that is easy to grasp. The sponge ring (6) is located on one side of the sleeve (1), and the material of the sponge ring (6) is sponge.

5. The bidirectionally retractable dust suction tube according to claim 1, characterized in that: An air guiding portion (7) for guiding air is provided on one side of the rear cylinder (202), and the cross-sectional shape of the air guiding portion (7) is a triangle.

6. The bidirectionally retractable dust suction tube according to claim 1, characterized in that: The internal space of the front cylinder (201) gradually becomes smaller from the entrance.

7. The bidirectionally retractable dust suction tube according to claim 1, characterized in that: The front cylinder (201) and the rear cylinder (202) are both made of PVC material, and the surfaces of the front cylinder (201) and the rear cylinder (202) are subjected to wear-resistant treatment.

8. The bidirectionally retractable dust suction tube according to claim 1, characterized in that: The top of the sleeve (1) is provided with a raised portion (8), and a plurality of the raised portions (8) are arranged in an array in sequence on the top of the sleeve (1).

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