Conductive dust suction tube capable of being bent in two directions

Abstract

The present invention provides a conductive dust suction tube that can be bent in two directions, and relates to a dust suction tube, comprising a dust suction tube, a fixed joint (3), a spring hose (6) and a rotary joint (14), wherein the dust suction tube comprises an upper tube section (1) and a lower tube section (15), one end of the upper tube section (1) is a free end, and the other end of the upper tube section (1) is sleeved with a fixed joint (3), one end of the lower tube section (15) is matched with a dust collector floor brush, and the other end of the lower tube section (15) is sleeved with a rotary joint (14), and a fixed seat (4) extending from the front of the fixed joint (3) is clamped between two rotating shaft seats (7) extending from the front of the rotary joint (14); the upper tube section and the lower tube section of the dust suction tube of the present invention are rotatably connected by a rotating shaft, and can realize limited bidirectional bending within the range of 0-90° upward and 0-180° downward. By performing limited bending and deformation on the dust suction tube, cleaning and dust collection requirements in different situations can be met, and the operation is convenient, and manpower and material consumption is saved.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of vacuum cleaner dust suction tubes, and in particular to a conductive dust suction tube that can be bent in two directions. Background Art

[0002] A vacuum cleaner is a commonly used cleaning appliance used to remove dust from floors, carpets, walls, furniture, clothing and various crevices. A vacuum cleaner generally includes a long vacuum hose. However, as a rigid component, the vacuum hose is difficult to bend. When cleaning relatively low places such as under beds and tables, the vacuum hose cannot directly reach deep into the bottom area for cleaning. People need to bend over or squat to extend the floor brush to the bottom, which increases their physical exertion and labor intensity. Cleaning is especially difficult for some people with unchanged lumbar vertebrae or the elderly. Moreover, when cleaning under beds and tables, the vacuum hose is very likely to collide with objects, damaging the edges of the objects, affecting the appearance and damaging the outer wall of the vacuum hose. When cleaning high and hard-to-reach places such as door frames and cabinet tops, the vacuum hose is even more difficult to bend to vacuum high places, which brings great inconvenience to daily cleaning.

[0003] Some bendable vacuum cleaners have also appeared. Patent document No. 209186556 discloses a vacuum cleaner and its bendable connecting tube, including upper and lower connecting tubes that can be bent together and brought together, reducing the length for convenient storage. The vacuum cleaner can also be lifted by a handle, making it more convenient to carry and improving the user experience. However, this patent document only bends the vacuum cleaner tube once into a folded state to reduce the volume and save space. It cannot be bent to clean under beds, under tables, or high and difficult-to-reach places during vacuuming.

[0004] The patent document with announcement number 209186550 discloses a handheld vacuum cleaner, which is convenient for human hand operation by setting the pivot for articulating the upper rod section and the lower rod section on the front side wall of the rod, setting the lock hook in the locking mechanism on the rear side wall of the rod, and setting the unlocking switch in the locking mechanism on the front side wall of the rod. The unlocking switch on the front side of the rod and the lock hook on the rear side of the rod are linked by a linkage component, that is, after the front unlocking switch is operated, the lock hook on the rear side is unlocked, so that the user can operate the handheld vacuum cleaner in this case more conveniently; however, the patent document only realizes bending by deforming the flexible tube, and the bending angle cannot be fixed. When cleaning high and difficult-to-reach places, the lower tube section is difficult to droop and the drooping section swings freely. The inability to fix the bending angle makes it difficult to achieve dust collection, and there is also a greater safety risk.

[0005] Therefore, a dust collection tube that can meet the cleaning and dust collection needs in different situations is needed. Summary of the Invention

[0006] In order to overcome the shortcomings of the background technology, the present invention provides a conductive dust suction tube that can be bent in two directions. The upper tube section and the lower tube section of the dust suction tube are rotatably connected by a rotating shaft, which can realize a limited two-way bending within the range of 0-90 degrees upward and 0-180 degrees downward. By performing limited bending and deformation on the dust suction tube, the cleaning and dust collection needs in different situations can be met, and the operation is convenient and energy-saving.

[0007] Save manpower and material resources.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A conductive dust suction tube that can be bent in two directions comprises a dust suction tube, a fixed joint, a spring hose and a rotary joint. The dust suction tube comprises an upper tube section and a lower tube section, one end of the upper tube section is a free end, and a fixed joint is sleeved inside the other end of the upper tube section, one end of the lower tube section is connected to the dust cleaner floor brush, and a rotary joint is sleeved inside the other end of the lower tube section, and a fixed seat extending from the front of the fixed joint is clamped between two rotating shaft seats extending from the front of the rotary joint, and the fixed seat and the rotating shaft seat are fastened to each other by a locking ring and a cover and realize "limited" rotation. A spring hose is sleeved inside the connection between the upper tube section and the lower tube section, and a locking mechanism is provided between the fixed joint and the rotary joint. The dust suction tube obtains upward free bending and downward limited bending through the fixed joint and the rotary joint at the connection between the upper tube section and the lower tube section.

[0010] The conductive dust suction tube capable of bidirectional bending is characterized in that the fixing seat is two pairs of circular rings with stepped surfaces, and a cross-shaped rib is fixedly arranged in the middle of the circular rings protruding outward from the fixing seat.

[0011] The conductive dust suction tube that can be bent in both directions, the rotary joint includes a rotary shaft seat, a locking ring and a cover. The two rotary shaft seats extending from the front of the rotary joint are arranged opposite to each other, a central hole is opened in the middle of the rotary shaft seat, and a circularly arranged groove tooth is provided on the inner surface of the central hole. The locking ring is arranged on the plug post extending outward from the inner surface of the cover, and the cover is inserted into the central hole of the rotary shaft seat through the plug post.

[0012] The conductive dust suction tube that can be bent in both directions has a slot on the plug post extending outward from the inner surface of the cover. The slot is divided into two horizontal slots with the axis along the horizontal direction and two longitudinal slots with the axis along the vertical direction. The two longitudinal slots pass through the plug post, and the depth of the two horizontal slots is 1 / 2-2 / 3 of the length of the plug post.

[0013] The bidirectionally bendable conductive dust suction tube has two radially opposite protrusions A on the inner surface of the locking ring and two radially opposite protrusions B on the outer surface of the locking ring. The line connecting the two protrusions A is perpendicular to the line connecting the two protrusions B.

[0014] The conductive dust suction tube that can be bent in both directions has a locking ring that is sleeved on the plug post extending outward from the inner surface of the cover, and the two protrusions A on the inner surface of the locking ring fall into the two longitudinal grooves on the plug post, and the two radially opposite protrusions B on the outer surface of the locking ring are clamped in the grooves on the inner surface of the middle hole of the rotating shaft seat.

[0015] The conductive dust suction tube capable of being bent in two directions has a cross-shaped strip on the fixing seat that falls into a slot on an outwardly extending plug post on the inner surface of the cover.

[0016] The conductive dust suction tube capable of bidirectional bending is provided with a through hole in the middle of the outer surface of the cover, and a screw passes through the through hole to threadably fasten the fixing seat, the rotating shaft seat, the locking ring and the cover.

[0017] The conductive dust suction tube that can be bent in both directions, the locking mechanism includes a lock hook and a push-twist, a lock hook mounting seat is fixedly provided on the upper surface of the outer end of the fixed joint, and a push-twist mounting seat is fixedly provided on the upper surface of the outer end of the rotating joint, a lock hook is connected to the lock hook mounting seat through a pivot, a hook tooth is provided on the lower surface of the front end of the lock hook, a hook tooth groove adapted to the hook tooth is provided in the push-twist mounting seat, a push-twist is slidably provided on the push-twist mounting seat, and a spring is installed in the cavity formed by the push-twist mounting seat and the push-twist.

[0018] The conductive dust suction tube capable of being bent in two directions has an upward bending angle of the lower tube section of 0-90° and a downward bending angle of the lower tube section of 0-180°.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a bidirectionally bendable conductive dust collection tube. The upper and lower sections of the dust collection tube are rotatably connected via a rotating shaft, enabling limited bidirectional bending within the range of 0-90° upward and 0-180° downward. By performing limited bending and deformation on the dust collection tube, cleaning and dust collection needs in different situations can be met:

[0021] The upward bend design of the lower section of the vacuum hose allows the vacuum hose to reach the bottom quickly and conveniently when cleaning low places such as under beds and tables, eliminating the need to bend over. This also overcomes the drawbacks of traditional vacuum hoses, which can collide with objects when cleaning, damaging the edges of objects, affecting the appearance, and damaging the outer wall of the vacuum hose.

[0022] The downward bending design of the lower tube section of the vacuum cleaner pipe can meet the needs of cleaning high and hard-to-reach places such as door frames and cabinet tops. The vacuum cleaner pipe can be buckled down in a "hook-like" manner, which is convenient for vacuuming high places. In particular, the elastic deformation of the locking ring allows the two protrusions of the locking ring to engage with the grooves arranged in the ring in the middle hole, which limits the rotation angle of the rotary joint and prevents the lower tube section from swinging freely when it is bent and drooped. Therefore, when the vacuum cleaner pipe is held high to clean door frames and cabinet tops, the bent and drooping lower tube section can be maintained at a certain rotation angle. At the same time, the bending angle has multiple gears, which can realize any angle limitation within the range of 0-180° to meet the usage requirements at different angles.

[0023] The conductive dust suction tube of the present invention can be bent in two directions. It is easy to operate, convenient and practical, and greatly reduces the burden of manual cleaning. When the dust suction tube is stored and transported, the lower tube section is bent downward by 180 degrees so that the lower tube section fits with the upper tube section, shortening the length of the dust suction tube, reducing the packaging size, reducing the volume, and saving transportation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded view of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of a fixed joint end of the present invention;

[0026] Figure 3 This is a schematic diagram of the front structure of the rod portion of the present invention;

[0027] Figure 4 It is a schematic diagram of the back structure of the rod portion of the present invention;

[0028] Figure 5 1. It is a schematic diagram of the top view of the rod structure of the present invention;

[0029] Figure 6 The present invention Figure 3 A magnified view of part B in FIG;

[0030] Figure 7 This is a schematic structural diagram of the lower pipe section of the present invention in an upwardly flipped state;

[0031] Figure 8 This is a schematic structural diagram of the lower pipe section of the present invention in a downwardly flipped state;

[0032] Figure 9 This is a schematic structural diagram of the lower tube section of the present invention in a folded state;

[0033] Figure 10 This invention Figure 3 Schematic diagram of the AA cross-section structure;

[0034] In the figure: 1-upper pipe section, 2-wire tube, 3-fixed joint, 4-fixed seat, 5-ribbed bar, 6-spring hose, 7-rotating shaft seat, 8-grooves, 9-middle hole, 10-cover, 11-screw, 12-perforation, 13-locking ring, 14-rotating joint, 15-lower pipe section, 16-hole, 17-lock hook mounting seat, 18-rotating shaft, 19-hook teeth, 20-lock hook, 21-push and twist, 22-spring, 23-hook tooth groove, 24-push and twist mounting seat, 25-insertion column, 26-slot, 27-protrusion A, 28-protrusion B, 29-wire. DETAILED DESCRIPTION

[0035] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0036] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly used by those skilled in the art to which the present invention pertains. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] For example, please refer to Figure 1-10The upper and lower pipe sections 1 and 15 are connected by a spring hose 6, and the lower and lower pipe sections 1 and 15 are connected by a spring hose 6. The upper and lower pipe sections 1 and 15 are connected by a spring hose 6, and the upper and lower pipe sections 1 and 15 are connected by a spring hose 6. The upper and lower pipe sections 1 and 15 are connected by a spring hose 6, and the upper and lower pipe sections 1 and 15 are connected by a spring hose 6. The upper and lower pipe sections 1 and 15 are connected by a spring hose 6, and the upper and lower pipe sections 1 and 15 are connected by a spring hose 6. The upper and lower pipe sections 1 and 15 are connected by a spring hose 6, and the upper and lower pipe sections 1 and 15 are connected by a spring hose 6. The upper and lower pipe sections 1 and 15 are connected by a spring hose 6, and the upper and lower pipe sections 1 and 15 are connected by a spring hose 6.

[0039] For example, please refer to Figure 1-2 The fixing seat 4 is composed of two pairs of circular rings with stepped surfaces, and a cross-shaped strip 5 is fixed in the middle of the circular rings protruding outward from the fixing seat 4.

[0040] For example, please refer to Figure 1-2 The rotary joint 14 includes a rotary shaft seat 7, a locking ring 13 and a cover 10. The two rotary shaft seats 7 extending from the front of the rotary joint 14 are arranged opposite to each other. A central hole 9 is opened in the middle of the rotary shaft seat 7. The inner surface of the central hole 9 is provided with an annularly arranged groove tooth 8. The locking ring 13 is sleeved on the plug post 25 extending outward from the inner surface of the cover 10, and the cover 10 is inserted into the central hole 9 of the rotary shaft seat 7 through the plug post 25.

[0041] For example, please refer to Figure 1-2 A slot 26 is provided on the plug post 25 extending outward from the inner surface of the cover 10. The slot 26 is divided into two transverse slots with the axis along the horizontal direction and two longitudinal slots with the axis along the vertical direction. The two longitudinal slots pass through the plug post 25. The depth of the two transverse slots is 1 / 2-2 / 3 of the length of the plug post 25. The depth of the two transverse slots and the two longitudinal slots is adapted to the embedded position of the locking ring 13 and the fixing seat 4. The protrusion A27 of the locking ring 13 and the rib 5 of the fixing seat 4 are embedded in the two longitudinal slots 26 in sequence, while only the rib 5 of the fixing seat 4 is embedded in the two transverse slots 26.

[0042] For example, please refer to Figure 1-2 Two radially opposite protrusions A27 are provided on the inner surface of the locking ring 13, and two radially opposite protrusions B28 are provided on the outer surface of the locking ring 13. The line connecting the two protrusions A27 is perpendicular to the line connecting the two protrusions B28.

[0043] For example, please refer to Figure 1-2The locking ring 13 is sleeved on the plug post 25 extending outward from the inner surface of the cover 10, and the two protrusions A27 on the inner surface of the locking ring 13 fall into the two longitudinal grooves 26 on the plug post 25 to realize the circumferential limitation of the locking ring 13. The two radially opposite protrusions B28 on the outer surface of the locking ring 13 are clamped in the groove teeth 8 on the inner surface of the middle hole 9 of the rotating shaft seat 7. When the rotary joint 14 rotates, the elastic deformation of the locking ring 13 causes the two protrusions B28 of the locking ring 13 to bite into the groove teeth 8, which plays a role in limiting and fixing the rotation angle of the rotary joint 14, so that the lower pipe section 15 that is bent and drooped can be maintained at a certain rotation angle when the vacuum hose is raised to clean the door frame and the cabinet top, avoiding the free rotation of the lower pipe section 15 and the inability to fix the bending angle, which makes cleaning difficult. At the same time, the bending angle has multiple gears to achieve arbitrary angle setting within the range of 0-180°.

[0044] For example, please refer to Figure 1-2 The "cross" shaped strip 5 on the fixing seat 4 falls into the card groove 26 on the plug column 25 extending outward from the inner surface of the cover 10, thereby realizing the circumferential limitation of the cover 10 and the fixing seat 4.

[0045] For example, please refer to Figure 1 A through hole 12 is provided in the middle of the outer surface of the cover 10 , and a screw 11 passes through the through hole 12 to threadably fasten the fixing seat 4 , the rotating shaft seat 7 , the locking ring 13 and the cover 10 .

[0046] For example, please refer to Figure 1-9 The locking mechanism includes a lock hook 20 and a push-twist 21. A lock hook mounting seat 17 is fixed on the outer upper surface of the fixed joint 3, and a push-twist mounting seat 24 is fixed on the outer upper surface of the rotary joint 14. The lock hook 20 is connected to the lock hook mounting seat 17 through a pivot. Figure 6 , holes 16 are drilled on the two side walls of the lock hook mounting seat 17, and the rotating shaft 18 at the tail end of the lock hook 20 is clamped in the holes 16 on the two side walls of the lock hook mounting seat 17 to realize rotational connection. A hook tooth 19 is provided on the lower surface of the front end of the lock hook 20, and a hook tooth groove 23 adapted to the hook tooth 19 is provided in the push-twist mounting seat 24. The push-twist 21 slides into the push-twist mounting seat 24, and a spring 22 is installed in the cavity formed by the push-twist mounting seat 24 and the push-twist 21. The push-twist 21 is a "concave" plate structure, and the front end of the hook tooth 19 falls into the notch of the push-twist 21, so that the push-twist 21 presses the hook tooth 19, thereby realizing secondary tightening, strengthening the locking force of the locking mechanism, preventing the hook tooth 19 from popping out of the hook tooth groove 23, and improving the strength of the straight connection state of the upper pipe section 1 and the lower pipe section 15.

[0047] For example, please refer to Figure 7-9 The upward bending angle of the lower tube section 15 is 0-90°, and the downward bending angle of the lower tube section 15 is 0-180°, wherein Figure 7The lower pipe section 15 of the vacuum cleaner is bent upward, which makes it easier to clean low places such as under the bed and under the table without having to bend over. Figure 8 The lower pipe section 15 of the vacuum tube is bent downward, which is convenient for cleaning hard-to-reach places such as door frames and cabinet tops. Angle limiting can be achieved to prevent the lower pipe section 15 from shaking freely when it is bent downward.

[0048] For example, please refer to Figure 1 Or 10, a through wire tube 2 is provided at the lower part of the tube wall of the upper tube section 1, the lower tube section 15, the fixed joint 3 and the rotary joint 14 of the vacuum tube. The wire 29 passes through the wire tube 2 and is independent of the inside of the vacuum tube. When the vacuum tube is bent, the setting of the wire will not be affected, thereby improving the safety of operation and avoiding damage to the line.

[0049] Working principle: When using a vacuum cleaner to clean low places such as under the bed or table, open the locking mechanism between the upper tube section 1 and the lower tube section 15 of the vacuum tube. Specifically, push the push knob 21, which is pushed backward under the force of the spring 22, and pull up the lock hook 20 pressed on the lower edge of the push knob 21, thereby unlocking the upper tube section 1 and the lower tube section 15. Hold the handle at the upper end of the upper tube section 1, and the floor brush at the lower end of the vacuum tube touches the ground. By pressing down the upper tube section 1. The rotary joint 14 of the lower tube section 15 is rotated upward to achieve a bend in the middle of the vacuum cleaner tube. The spring hose 6 inside the connection between the upper tube section 1 and the lower tube section 15 can be bent upward at any angle within the range of 0-90 degrees, thereby allowing the floor brush to be extended under a bed or table, etc., eliminating the need for people to bend over to operate. This also prevents the vacuum cleaner tube from colliding with objects when cleaning under a bed or table due to the inability to bend. This not only damages the edge of the object, affecting the appearance, but also damages the outer wall of the vacuum cleaner tube.

[0050] When vacuuming high and hard-to-reach places such as door frames and cabinet tops, open the locking mechanism between the upper pipe section 1 and the lower pipe section 15 of the vacuum hose, lift the vacuum hose, bend the lower pipe section 15 downward to rotate the rotary joint 14 downward, and the spring hose 6 inside the connection between the upper pipe section 1 and the lower pipe section 15 is elastically stretched. During the rotation, the elastic deformation of the locking ring 13 causes the two protrusions B28 of the locking ring 13 to engage with the annular groove teeth 8 arranged in the middle hole 9, which limits and fixes the rotation angle of the rotary joint 14. In this way, when the vacuum hose is lifted high to clean door frames and cabinet tops, the bent and drooped lower pipe section 15 can be maintained at a certain rotation angle, avoiding the lower pipe section 15 from rotating freely and being unable to fix the bending angle, resulting in inability to clean. At the same time, the bending angle has multiple gears, which can achieve arbitrary angle limitation within the range of 0-180° to meet the usage requirements of different angles.

[0051] When the dust suction pipe is stored and transported, the lower pipe section 15 is bent downward by 180 degrees so that the lower pipe section 15 fits with the upper pipe section 1, thereby shortening the length of the dust suction pipe, reducing the packaging size, reducing the volume, and saving transportation costs.

[0052] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Therefore, the embodiments of the present invention are merely illustrative examples of the present invention and are not intended to limit the present invention in any way.

Claims

1. A conductive dust suction pipe capable of being bent in both directions, comprising a dust suction pipe, a fixed joint (3), a spring hose (6) and a rotary joint (14), characterized in that: The vacuum tube comprises an upper tube section (1) and a lower tube section (15), one end of the upper tube section (1) is a free end, a fixed joint (3) is sleeved on the other end of the upper tube section (1), one end of the lower tube section (15) is connected to the floor brush of the vacuum cleaner, a rotary joint (14) is sleeved on the other end of the lower tube section (15), a fixed seat (4) extending from the front of the fixed joint (3) is clamped between two rotating shaft seats (7) extending from the front of the rotary joint (14), and the fixed seat (4) is fixed to the upper end of the lower tube section (15). ) is fastened to the rotating shaft seat (7) through a locking ring (13) and a cover (10) and realizes "limited" rotation. A spring hose (6) is provided inside the connection between the upper pipe section (1) and the lower pipe section (15). A locking mechanism is provided between the fixed joint (3) and the rotating joint (14). The dust suction pipe obtains upward free bending and downward limited bending through the fixed joint (3) and the rotating joint (14) at the connection between the upper pipe section (1) and the lower pipe section (15); The rotary joint (14) comprises a rotary shaft seat (7), a locking ring (13) and a cover (10). The two rotary shaft seats (7) extending from the front of the rotary joint (14) are arranged opposite to each other. A central hole (9) is provided in the central part of the rotary shaft seat (7). An annularly arranged groove teeth (8) are provided on the inner surface of the central hole (9). The locking ring (13) is sleeved on an outwardly extending plug post (25) on the inner surface of the cover (10). The cover (10) is plugged into the central hole (9) of the rotary shaft seat (7) through the plug post (25). Two radially opposite protrusions A (27) are provided on the inner surface of the locking ring (13), and two radially opposite protrusions B (28) are provided on the outer surface of the locking ring (13); The locking ring (13) is sleeved on the plug post (25) extending outward from the inner surface of the cover (10), the two protrusions A (27) on the inner surface of the locking ring (13) fall into the two longitudinal grooves (26) on the plug post (25), and the two radially opposite protrusions B (28) on the outer surface of the locking ring (13) are clamped in the groove teeth (8) on the inner surface of the middle hole (9) of the rotating shaft seat (7); The fixing seat (4) is composed of two pairs of circular rings with stepped surfaces, and a "cross" shaped rib (5) is fixedly provided in the middle of the circular rings protruding outward from the fixing seat (4).

2. The bidirectionally bendable conductive dust suction tube according to claim 1, characterized in that: A slot (26) is provided on the plug post (25) extending outward from the inner surface of the cover (10), wherein the slot (26) is divided into two transverse slots with the axis along the horizontal direction and two longitudinal slots with the axis along the vertical direction. The two longitudinal slots pass through the plug post (25), and the depth of the two transverse slots is 1 / 2-2 / 3 of the length of the plug post (25).

3. The bidirectionally bendable conductive dust suction tube according to claim 1, characterized in that: The line connecting the two protrusions A (27) is perpendicular to the line connecting the two protrusions B (28).

4. The bidirectionally bendable conductive dust suction tube according to claim 1, characterized in that: The "cross" shaped strip (5) on the fixing seat (4) falls into the slot (26) on the plug post (25) extending outward from the inner surface of the cover (10).

5. The bidirectionally bendable conductive dust suction tube according to claim 1 or 2, characterized in that: A through hole (12) is provided in the middle of the outer surface of the cover (10), and a screw (11) passes through the through hole (12) to threadably fasten the fixed seat (4), the rotating shaft seat (7), the locking ring (13) and the cover (10).

6. The bidirectionally bendable conductive dust suction tube according to claim 1, characterized in that: The locking mechanism comprises a lock hook (20) and a push-twist (21), a lock hook mounting seat (17) is fixedly provided on the upper surface of the outer end of the fixed joint (3), a push-twist mounting seat (24) is fixedly provided on the upper surface of the outer end of the rotary joint (14), a lock hook (20) is connected to the lock hook mounting seat (17) via a pivot, a hook tooth (19) is provided on the lower surface of the front end of the lock hook (20), a hook tooth groove (23) adapted to the hook tooth (19) is provided in the push-twist mounting seat (24), a push-twist (21) is slidably provided on the push-twist mounting seat (24), and a spring (22) is installed in a cavity formed by the push-twist mounting seat (24) and the push-twist (21).

7. The bidirectionally bendable conductive dust suction tube according to claim 1, characterized in that: The upward bending angle of the lower pipe section (15) is 0-90°, and the downward bending angle of the lower pipe section (15) is 0-180°.

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