CN212521649U - Bidirectional-bending conductive dust collection pipe - Google Patents

Abstract

The utility model provides a can two-way bending electric conduction dust absorption pipe relates to a dust absorption pipe, including dust absorption pipe, fixed joint (3), spring hose (6) and rotary joint (14), the dust absorption pipe include upper pipe section (1) and lower pipe section (15), the one end of upper pipe section (1) is the free end, the other end endotheca of upper pipe section (1) is equipped with fixed joint (3), the one end of lower pipe section (15) is connected with the dust catcher ground brush, the other end endotheca of lower pipe section (15) is equipped with rotary joint (14), fixing base (4) clamp that fixed joint (3) front portion stretches out is between two rotary shaft seat (7) that rotary joint (14) front portion stretches out; the utility model discloses rotate through the pivot between the upper segment of dust absorption pipe and the lower tube section and connect, can realize upwards 0-90 °, the spacing formula bidirectional bending of 0-180 within ranges downwards, through carrying out spacing formula to the dust absorption pipe and bending the deformation and can satisfy the clean dust absorption demand under the different situation, the simple operation uses manpower sparingly and materials consumption.

Description

Bidirectional-bending conductive dust collection pipe

Technical Field

The utility model mainly relates to the technical field of dust suction pipes of dust collectors, in particular to a bidirectional bending conductive dust suction pipe.

Background

The dust collector is a commonly used clean sanitary electric appliance, is used for clearing away dust in the ground, carpet, wall, furniture, clothes and various gaps, generally comprises a longer dust collecting pipe, however, the dust collecting pipe is difficult to bend as a rigid component, when clearing relatively low places such as bed bottom, table bottom and the like, the dust collecting pipe cannot directly go deep into the bottom region for cleaning, a floor brush can extend into the bottom only by bending or squatting of a person, the labor consumption and labor intensity of a human body are increased, the cleaning is very difficult for some aged people or unchanged lumbar vertebrae, and the dust collecting pipe is very easy to collide with objects when cleaning the bed bottom and the table bottom, the edges of the objects are damaged, the appearance is influenced and the outer wall of the dust collecting pipe is damaged; when cleaning places such as door frames and cabinet tops which are difficult to reach, the dust suction pipe is more difficult to bend to suck dust at the high positions, and great inconvenience is brought to daily cleaning.

At present, some bendable dust collectors also appear, and a patent document with publication number 209186556 discloses a dust collector and a bendable connecting pipe thereof, wherein the dust collector comprises an upper joint pipe and a lower joint pipe which can be mutually bent and then closed, so that the length is reduced, the dust collector is convenient to store, the dust collector can be lifted through a handle, the carrying is more convenient, and the user experience is improved; however, the patent document only bends the dust collection pipe to a folded state once so as to reduce the volume and save the space, and the dust collection pipe cannot be bent to clean the bed bottom, the table bottom or the position which is difficult to clean at a high position in the dust collection process;

the publication No. 209186550 discloses a handheld vacuum cleaner, in which a pivot for hinging an upper rod section and a lower rod section is provided on a front side wall surface of a rod, a latch hook in a locking mechanism is provided on a rear side wall surface of the rod, and an unlocking switch in the locking mechanism is provided on the front side wall surface of the rod, so that a user can conveniently operate the handheld vacuum cleaner; however, this patent document realizes bending only through flexible pipe deformation, can't fix the angle of bending, and when the place that the clean eminence is difficult to reach, the lower part pipeline section is difficult to flagging and the section that hangs down freely rocks, can't fix the angle of bending and realize the dust absorption difficultly, also has great safety risk.

Therefore, there is a need for a suction hose that can be used for cleaning and sucking dust under different conditions.

Disclosure of Invention

The utility model discloses an overcome not enough among the background art and provide a but two-way bending's electrically conductive dust absorption pipe, rotate through the pivot between the last pipeline section of dust absorption pipe and the low tube section and connect, can realize upwards 0-90 °, the spacing formula two-way bending of 0-180 within range downwards, through carrying out the clean dust absorption demand under the different situation to the dust absorption pipe that spacing formula is bent and is out of shape, the simple operation, the material resources consumption of using manpower sparingly.

In order to achieve the above object, the utility model provides a following technical scheme:

a bidirectional-bending conductive dust collection pipe comprises a dust collection pipe, a fixed joint, a spring hose and a rotary joint, wherein the dust collection pipe comprises an upper pipe section and a lower pipe section, one end of the upper pipe section is a free end, a fixed joint is sleeved in the other end of the upper pipe section, one end of the lower pipe section is matched and connected with a dust collector floor brush, a rotary joint is sleeved in the other end of the lower pipe section, a fixed seat extending out of the front part of the fixed joint is clamped between two rotary shaft seats extending out of the front part of the rotary joint, the fixed seat is fixedly connected with the rotary shaft seats through a locking ring and a cover to realize limit type rotation, the inside cover of junction at last pipeline section and low tube section is equipped with the spring hose, is equipped with locking mechanism between fixed joint and rotary joint, and the dust absorption pipe acquires ascending freely bending and spacing formula bending downwards through the fixed joint and the rotary joint of last pipeline section and low tube section junction.

The two-way bendable conductive dust absorption pipe is characterized in that the fixing seat is two pairs of circular rings with step surfaces, and cross-shaped fillets are fixedly arranged in the middle of the circular rings protruding outwards from the fixing seat.

The two-way bendable conductive dust absorption pipe is characterized in that the rotary joint comprises a rotary shaft seat, a locking ring and a cover, the two rotary shaft seats extending out of the front part of the rotary joint are arranged oppositely, a middle hole is formed in the middle of the rotary shaft seat, groove teeth which are arranged in an annular mode are arranged on the inner surface of the middle hole, the locking ring is sleeved on an inserting column extending outwards on the inner surface of the cover, and the cover is inserted into the middle hole of the rotary shaft seat through the inserting column.

The bidirectional bendable conductive dust suction pipe is characterized in that clamping grooves are formed in inserting columns extending outwards from the inner surface of the cover, the clamping grooves are divided into two transverse clamping grooves with axes along the horizontal direction and two longitudinal clamping grooves with axes along the vertical direction, the two longitudinal clamping grooves penetrate through the inserting columns, and the depth of the two transverse clamping grooves is 1/2-2/3 of the length of the inserting columns.

The conducting dust absorption pipe capable of being bent in two directions is characterized in that two protrusions A which are opposite in radial direction are arranged on the inner surface of the lock ring, two protrusions B which are opposite in radial direction are arranged on the outer surface of the lock ring, and the connecting line of the two protrusions A is perpendicular to the connecting line of the two protrusions B.

The two protrusions A on the inner surface of the locking ring fall into the two longitudinal clamping grooves on the inserting column, and the two protrusions B on the outer surface of the locking ring, which are opposite in the radial direction, are clamped in the groove teeth on the inner surface of the middle hole of the rotary shaft seat.

The cross-shaped fillet on the fixed seat of the bidirectional bending conductive dust absorption pipe falls into the clamping groove on the inserting column extending outwards from the inner surface of the cover.

The conducting dust absorption pipe capable of being bent in two directions is characterized in that a through hole is formed in the middle of the outer surface of the cover, and a screw penetrates through the through hole to fixedly connect the fixing seat, the rotating shaft seat, the locking ring and the cover in a threaded mode.

The conductive dust absorption pipe capable of being bent bidirectionally, the locking mechanism comprises a lock hook and a push button, a lock hook mounting seat is fixedly arranged on the upper surface of the outer end of the fixed joint, a push button mounting seat is fixedly arranged on the upper surface of the outer end of the rotary joint, the lock hook is connected with the lock hook through a pivot in the lock hook mounting seat, hook teeth are arranged on the lower surface of the front end of the lock hook, hook tooth grooves matched with the hook teeth are formed in the push button mounting seat, the push button is arranged on the push button mounting seat in a sliding manner, and a spring is arranged in a cavity formed by the push button mounting seat and the push button.

The bidirectional-bending conductive dust collection pipe is characterized in that the lower pipe section is bent upwards by 0-90 degrees, and the lower pipe section is bent downwards by 0-180 degrees.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a but two-way bending's electrically conductive dust absorption pipe rotates through the pivot between the last pipeline section of dust absorption pipe and the low tube section to be connected, can realize upwards 0-90 °, the spacing formula two-way bending of 0-180 within ranges downwards, through carrying out the clean dust absorption demand under the different situation to the dust absorption pipe spacing formula deformation of bending:

the design that the lower pipe section of the dust collection pipe is bent upwards can meet the requirements that when a bed bottom, a table bottom and other low places are cleaned, the dust collection pipe can quickly and conveniently go deep into the bottom, the stoop is avoided, and the defects that when the bed bottom and the table bottom are cleaned, the dust collection pipe collides with an object, the edge of the object is damaged, the appearance is influenced and the outer wall of the dust collection pipe is damaged in the traditional dust collection pipe are overcome;

the design of bending the lower pipe section downwards through the dust absorption pipe can satisfy and clean the door frame, the high places such as cabinet top that are difficult to reach, can realize that dust absorption pipe "break hook" formula is detained down, make things convenient for dust absorption eminence position, especially, two archs that make the locking collar through the elastic deformation of locking collar are engaged with the groove tooth that the interior annular of mesopore set up mutually, play spacing fixed action to rotary joint's rotation angle, freely rock when avoiding lower pipe section flagging to bend, thereby can clean the door frame at the dust absorption pipe of lifting, the flagging lower pipe section of bending can keep at certain rotation angle when cabinet top, the angle of bending has a plurality of gears simultaneously, realize that arbitrary angle in the 0-180 within range is injectd, satisfy the user demand of different angles.

The utility model discloses a but two-way bending's electrically conductive dust absorption pipe, the simple operation, convenient and practical alleviates the clear burden of manpower greatly, when the transport is accomodate to the dust absorption pipe, makes lower pipeline section and top tube section laminating through the design of lower pipeline section 180 of bending downwards, shortens the length of dust absorption pipe, reduces the vanning size, reduces the volume, saves the cost of transportation.

Drawings

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

FIG. 2 is a schematic view of a fixed joint end of the present invention;

fig. 3 is a front structural view of the rod part of the present invention;

fig. 4 is a back structural view of the rod part of the present invention;

fig. 5 is a schematic top view of the rod portion of the present invention;

fig. 6 is an enlarged view of a portion B of fig. 3 according to the present invention;

fig. 7 is a structural schematic diagram of the lower pipe section of the present invention in an upward-turned state;

fig. 8 is a structural schematic view of the lower pipe section of the present invention in a downward-turned state;

fig. 9 is a structural schematic view of the lower pipe section in a folded state according to the present invention;

fig. 10 is a schematic view of the cross-section a-a of fig. 6 according to the present invention;

in the figure: 1-upper pipe section, 2-wire conduit, 3-fixed joint, 4-fixed seat, 5-fillet, 6-spring hose, 7-rotating shaft seat, 8-groove tooth, 9-middle hole, 10-cover, 11-screw, 12-perforation, 13-locking ring, 14-rotating joint, 15-lower pipe section, 16-hole, 17-locking hook mounting seat, 18-rotating shaft, 19-hook tooth, 20-locking hook, 21-push button, 22-spring, 23-hook tooth groove, 24-push button mounting seat, 25-inserted column, 26-clamping groove, 27-protrusion A, 28-protrusion B and 29-wire.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, but rather, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the term knowledge in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In an embodiment, referring to fig. 1-10, a bidirectional bendable conductive dust collection pipe includes a dust collection pipe, a fixed joint 3, a spring hose 6 and a rotary joint 14, the dust collection pipe includes an upper pipe section 1 and a lower pipe section 15, one end of the upper pipe section 1 is a free end, the other end of the upper pipe section 1 is sleeved with the fixed joint 3, one end of the lower pipe section 15 is connected with a dust collector ground brush, the other end of the lower pipe section 15 is sleeved with the rotary joint 14, a fixed seat 4 extending from the front of the fixed joint 3 is clamped between two rotary shaft seats 7 extending from the front of the rotary joint 14, the fixed seat 4 is tightly connected with the rotary shaft seats 7 through a locking ring 13 and a cover 10 to realize 'limit' type rotation, the spring hose 6 is sleeved inside a joint between the upper pipe section 1 and the lower pipe section 15, a locking mechanism is arranged between the fixed joint 3 and the rotary joint 14, and the dust collection pipe is bent freely upwards through the fixed joint 3 and the rotary joint 14 at the joint between the upper pipe And downward limit type bending.

In an embodiment, referring to fig. 1-2, the fixing base 4 is two pairs of circular rings with step surfaces, and cross-shaped fillets 5 are fixedly arranged in the middle of the circular ring protruding outwards from the fixing base 4.

In an embodiment, referring to fig. 1-2, the rotary joint 14 includes two rotary shaft seats 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 disposed opposite to each other, a central hole 9 is formed in the middle of the rotary shaft seat 7, a plurality of annularly arranged groove teeth 8 are disposed on the inner surface of the central hole 9, the locking ring 13 is sleeved on a plug-in post 25 extending outward from the inner surface of the cover 10, and the cover 10 is plugged into the central hole 9 of the rotary shaft seat 7 through the plug-in post 25.

In an embodiment, referring to fig. 1-2, a slot 26 is formed in an insertion post 25 extending outward from an inner surface of the cover 10, the slot 26 is divided into two transverse slots having an axis along a horizontal direction and two longitudinal slots having an axis along a vertical direction, the two longitudinal slots penetrate through the insertion post 25, the depth of each transverse slot is 1/2-2/3 of the length of the insertion post 25, wherein the depth of each transverse slot is matched with the depth of each longitudinal slot and the embedded portion of the locking ring 13 and the embedded portion of the fixing seat 4, the protrusion a27 of the locking ring 13 and the fillet 5 of the fixing seat 4 are sequentially embedded in the two longitudinal slots 26, and only the fillet 5 of the fixing seat 4 is embedded in the two transverse slots 26.

In an embodiment, referring to fig. 1-2, two protrusions a27 are disposed on an inner surface of the lock ring 13, two protrusions B28 are disposed on an outer surface of the lock ring 13, and a connection line of the two protrusions a27 is perpendicular to a connection line of the two protrusions B28.

In an embodiment, referring to fig. 1-2, the locking ring 13 is sleeved on the plug post 25 extending outward from the inner surface of the cover 10, the two protrusions a27 on the inner surface of the locking ring 13 fall into the two longitudinal slots 26 on the plug post 25 to realize circumferential position limitation of the locking ring 13, the two protrusions B28 opposite in radial direction on the outer surface of the locking ring 13 are clamped in the slot teeth 8 on the inner surface of the central hole 9 of the rotating shaft seat 7, when the rotary joint 14 rotates, the two protrusions B28 of the locking ring 13 are engaged with the incisors 8 by the elastic deformation of the locking ring 13, the rotary joint 14 has the function of limiting and fixing the rotating angle, so that the lower pipe section 15 which is bent and drooped can be kept at a certain rotating angle when the high-lift dust absorption pipe cleans the door frame and the cabinet top, the problem that the lower pipe section 15 is difficult to clean due to the fact that the bending angle can not be fixed when the lower pipe section 15 rotates freely is avoided, meanwhile, the bending angle is provided with a plurality of gears, and arbitrary angle setting within the range of 0-180 degrees is realized.

In an embodiment, referring to fig. 1-2, the cross-shaped fillet 5 on the fixing seat 4 falls into the slot 26 on the inserting column 25 extending outward from the inner surface of the cover 10, so as to realize circumferential limit of the cover 10 and the fixing seat 4.

In an embodiment, referring to fig. 1, a through hole 12 is formed in the middle of the outer surface of the cover 10, and a screw 11 passes through the through hole 12 to fasten and connect the fixing base 4, the rotating shaft seat 7, the locking ring 13 and the cover 10.

In an embodiment, referring to fig. 1-9, the locking mechanism includes a locking hook 20 and a push knob 21, a locking hook mounting seat 17 is fixedly disposed on an upper surface of an outer end of the fixed joint 3, a push knob mounting seat 24 is fixedly disposed on an upper surface of an outer end of the rotary joint 14, the locking hook 20 is pivotally connected in the locking hook mounting seat 17, referring to fig. 6, holes 16 are drilled on two side walls of the locking hook mounting seat 17, a rotating shaft 18 at a tail end of the locking hook 20 is clamped in the holes 16 on the two side walls of the locking hook mounting seat 17 to achieve rotational connection, a hook tooth 19 is disposed on a lower surface of a front end of the locking hook 20, a hook tooth groove 23 adapted to the hook tooth 19 is disposed in the push knob mounting seat 24, the push knob 21 is slid into the push knob mounting seat 24, a spring 22 is disposed in a cavity formed by the push knob mounting seat 24 and the push knob 21, the push knob 21 is of a "concave" plate-shaped structure, a front end of the, the push button 21 is pressed on the hook teeth 19, secondary fastening is further achieved, the locking force of the locking mechanism is enhanced, the hook teeth 19 are prevented from popping out of the hook tooth grooves 23, and the strength of the straight connection state of the upper pipe section 1 and the lower pipe section 15 is improved.

In the embodiment, referring to fig. 7-9, the lower tube section 15 is bent upward at an angle of 0-90 °, and the lower tube section 15 is bent downward at an angle of 0-180 °, wherein fig. 7 illustrates a state in which the lower tube section 15 of the dust collection tube is bent upward, so as to facilitate cleaning of relatively low places such as a bed bottom and a table bottom, and avoid stooping; fig. 8 is a lower pipe section 15 of the dust collection pipe, which is bent downwards, so that places which are difficult to reach at high positions such as a door frame and a cabinet top can be cleaned conveniently, the angle limitation can be realized, and the lower pipe section 15 can be prevented from freely swinging when being bent in a drooping manner.

In the embodiment, referring to fig. 1 or 10, the penetrating conduit 2 is disposed at the lower portions of the walls of the upper pipe section 1, the lower pipe section 15, the fixed joint 3 and the rotary joint 14 of the dust suction pipe, and the wire 29 passes through the conduit 2 and is independent from the inside of the dust suction pipe, so that the arrangement of the wire is not affected when the dust suction pipe is bent, thereby improving the safety of operation and avoiding the damage of the circuit.

The working principle is as follows: when the dust collector is used for cleaning, when the lower places such as a bed bottom, a table bottom and the like are sucked, the locking mechanism between the upper pipe section 1 and the lower pipe section 15 of the dust collection pipe is opened, and the method specifically comprises the following steps: the push button 21 is pushed, the push button 21 is pushed backwards under the action of a spring 22, the lower edge of the push button 21 is pulled up by a pressed lock hook 20, so that the upper pipe section 1 and the lower pipe section 15 are unlocked, a handle part at the upper end of the upper pipe section 1 is held by hand, a floor brush at the lower end of the dust collection pipe is grounded, a rotary joint 14 of the lower pipe section 15 is rotated upwards by pressing down the upper pipe section 1, the middle part of the dust collection pipe is bent, a spring hose 6 in the connection part of the upper pipe section 1 and the lower pipe section 15 can be bent upwards by any angle within the range of 0-90 degrees, the floor brush can be extended into a bed bottom or a table bottom and the like, the bending operation of a person is avoided, the phenomenon that the dust collection pipe collides with an object when the bed bottom and the table bottom are cleaned due to the fact that the traditional dust collection pipe cannot be bent is avoided, the edge;

when a place which is difficult to reach such as a door frame, a cabinet top and the like is sucked, the locking mechanism between the upper pipe section 1 and the lower pipe section 15 of the dust absorption pipe is opened, the dust absorption pipe is lifted, the lower pipe section 15 is broken down to enable the rotary joint 14 to rotate downwards, the spring hose 6 in the connection part of the upper pipe section 1 and the lower pipe section 15 is elastically stretched, in the rotating process, the two protrusions B28 of the locking ring 13 are engaged with the annularly arranged groove teeth 8 in the central hole 9 by the elastic deformation of the locking ring 13, the rotary joint 14 has the function of limiting and fixing the rotating angle, so that the lower pipe section 15 which is bent and drooped can be kept at a certain rotating angle when the high-lift dust absorption pipe cleans the door frame and the cabinet top, the problem that the lower pipe section 15 can not be cleaned due to the fact that the bending angle can not be fixed because the lower pipe section is freely rotated is avoided, meanwhile, the bending angle has a plurality of gears, so that the limitation of any angle within the range of 0-180 degrees is realized, and the use requirements of different angles are met.

When the dust absorption pipe is accomodate the transport, through bending lower tube section 15 180 downwards, make lower tube section 15 and upper tube section 1 laminate mutually, shorten the length of dust absorption pipe, reduce the vanning size, reduce the volume, save cost of transportation.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents, and thus the embodiments of the invention are intended only as illustrative examples of the invention and no limitation of the invention is intended whatsoever to be construed by the embodiments of the invention.

Claims (10)

1. The utility model provides a but two-way bending electric conduction dust absorption pipe, includes dust absorption pipe, fixed joint (3), spring hose (6) and rotary joint (14), characterized by: the dust collection pipe comprises an upper pipe section (1) and a lower pipe section (15), one end of the upper pipe section (1) is a free end, a fixed joint (3) is sleeved in the other end of the upper pipe section (1), one end of the lower pipe section (15) is connected with a dust collector ground brush in a matching mode, a rotary joint (14) is sleeved in the other end of the lower pipe section (15), a fixed seat (4) extending out of the front portion of the fixed joint (3) is clamped between two rotary shaft seats (7) extending out of the front portion of the rotary joint (14), the fixed seat (4) and the rotary shaft seats (7) are in fastening connection through a locking ring (13) and a cover (10) to realize limiting type rotation, a spring hose (6) is sleeved in the connection position of the upper pipe section (1) and the lower pipe section (15), a locking mechanism is arranged between the fixed joint (3) and the rotary joint (14), the dust collection pipe obtains upward free bending and rotates towards the upper pipe section (1) through the fixed joint (3) and the rotary joint (14) at the connection position And bending the lower limit type.

2. The bidirectionally bendable conductive dust suction pipe of claim 1, wherein: the fixing seat (4) is two pairs of circular rings with step surfaces, and the middle part of the circular ring which protrudes outwards from the fixing seat (4) is fixedly provided with cross-shaped ribs (5).

3. The bidirectionally bendable conductive dust suction pipe of claim 1, wherein: the rotary joint (14) comprises a rotary shaft seat (7), a locking ring (13) and a cover (10), wherein the two rotary shaft seats (7) extending out of the front part of the rotary joint (14) are arranged oppositely, a middle hole (9) is formed in the middle of each rotary shaft seat (7), groove teeth (8) which are arranged in an annular mode are arranged on the inner surface of each middle hole (9), the locking ring (13) is sleeved on an inserting column (25) extending outwards on the inner surface of the cover (10), and the cover (10) is inserted into the middle hole (9) of each rotary shaft seat (7) through the inserting column (25).

4. The bidirectionally bendable conductive dust suction pipe of claim 1 or 3, wherein: a clamping groove (26) is formed in an inserting column (25) extending outwards from the inner surface of the cover (10), the clamping groove (26) is divided into two transverse clamping grooves with axes along the horizontal direction and two longitudinal clamping grooves with axes along the vertical direction, the two longitudinal clamping grooves penetrate through the inserting column (25), and the depth of the two transverse clamping grooves is 1/2-2/3 of the length of the inserting column (25).

5. The bidirectionally bendable conductive dust suction pipe of claim 1 or 3, wherein: two protrusions A (27) which are opposite in the radial direction are arranged on the inner surface of the locking ring (13), two protrusions B (28) which are opposite in the radial direction are arranged on the outer surface of the locking ring (13), and the connecting line of the two protrusions A (27) is perpendicular to the connecting line of the two protrusions B (28).

6. The bidirectionally bendable conductive dust suction pipe of claim 5, wherein: two protrusions A (27) on the inner surface of the locking ring (13) fall into two longitudinal clamping grooves (26) on the inserting column (25), and two protrusions B (28) opposite in the radial direction on the outer surface of the locking ring (13) are clamped in groove teeth (8) on the inner surface of a middle hole (9) of the rotary shaft seat (7).

7. The bidirectionally bendable conductive dust suction pipe of claim 2, wherein: the cross-shaped fillets (5) on the fixed seat (4) fall into the clamping grooves (26) on the inserting columns (25) extending outwards from the inner surface of the cover (10).

8. The bidirectionally bendable conductive dust suction pipe of claim 1 or 3, wherein: a through hole (12) is arranged in the middle of the outer surface of the cover (10), and a screw (11) passes through the through hole (12) to tightly connect the fixed seat (4), the rotary shaft seat (7), the locking ring (13) and the cover (10) through threads.

9. The bidirectionally bendable conductive dust suction pipe of claim 1, wherein: locking mechanism includes latch hook (20) and pushes away and turns round (21), has set firmly latch hook mount pad (17) on the outer end upper surface of fixed joint (3), has set firmly to push away and has turned round mount pad (24) on the outer end upper surface of rotary joint (14), there is latch hook (20) through the pivotal connection in latch hook mount pad (17), be equipped with hook tooth (19) at latch hook (20) front end lower surface, be equipped with in pushing away and turn round mount pad (24) with hook tooth's socket (23) of hook tooth (19) looks adaptation, it turns round (21) to push away to go up to be equipped with on turning round mount pad (24), push away to turn round mount pad (24) and push away to turn round and install spring (22) in the cavity that (21) formed.

10. The bidirectionally bendable conductive dust suction pipe of claim 1, wherein: the upward bending angle of the lower pipe section (15) is 0-90 degrees, and the downward bending angle of the lower pipe section (15) is 0-180 degrees.

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