CN107280587B - Insertion pipe and dust collector with same - Google Patents
Insertion pipe and dust collector with same Download PDFInfo
- Publication number
- CN107280587B CN107280587B CN201710721645.8A CN201710721645A CN107280587B CN 107280587 B CN107280587 B CN 107280587B CN 201710721645 A CN201710721645 A CN 201710721645A CN 107280587 B CN107280587 B CN 107280587B
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- pipe section
- hole
- pipe
- lock tongue
- locking
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/24—Hoses or pipes; Hose or pipe couplings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sink And Installation For Waste Water (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The application discloses a peg graft pipe and dispose dust catcher of this kind of peg graft pipe, wherein, peg graft the pipe and include: the pipe wall of the first pipe section is provided with a lock tongue hole in a through way; one end of the second pipe section is inserted into the first pipe section, and the outer pipe wall of the second pipe section is provided with a locking groove; the button seat is fixed on the outer pipe wall of the first pipe section, and a hinge hole is formed in the button seat; a locking button which is hinged to the button holder by a hinge shaft inserted into the hinge hole and includes a latch extending inward in a radial direction of the first pipe section; the locking spring is connected with the locking button and applies elasticity to the locking button, and a spring bolt on the locking button passes through a spring bolt hole and is clamped into the locking groove under the action of the elasticity; the hinge hole has a width dimension larger than the hinge shaft in the axial direction of the first pipe section. The plug pipe is not easy to separate, convenient to use, simple in mold and low in production cost.
Description
Technical Field
The application relates to a tube structure, in particular to an inserting tube for a dust collector.
Background
The lock catch structure of the traditional plug pipe realizes locking by utilizing the friction force of the lock catch which is pressed by a locking spring and the matching surface of a plug piece, has limited force and is easy to fall off when stressed. In order to prevent the falling off, the elastic force of the locking spring is increased. However, the elasticity of the locking spring is increased, which results in poor feel in use. Some manufacturers make the rotating shaft for connecting the lock catch inwards, and the methods increase the difficulty of manufacturing the die and cannot radically solve the problem of falling. And a reverse bevel is also formed on the matching surface of the lock catch and the plug piece to realize self-locking angle, so that the structure of the die becomes complicated, and the production and the cost of the die are influenced.
The cooperation of small household appliances such as dust catcher between two but split accessories (plug tube) is connected and is generally used hasp locking connection, hasp locking connection uses the locking fitting surface of hasp to cooperate the locking, press the hasp button and separate, this locking structure is difficult for realizing forming the self-locking angle on the locking fitting surface owing to cooperation space and mould structure problem, so the locking force of this structure can only be provided by the hasp spring, the power when opening for guaranteeing the hasp button is not very big many times, two connection accessories can oneself loosen the separation owing to the atress at the during operation.
Disclosure of Invention
The purpose of the application is: aiming at the problems, the plug-in pipe and the dust collector with the plug-in pipe are provided, wherein the plug-in pipe is not easy to separate, convenient to use, simple in mold and low in production cost.
The technical scheme of the application is as follows:
a bayonet tube, comprising:
the pipe wall of the first pipe section is provided with a lock tongue hole in a through way;
one end of the second pipe section is inserted into the first pipe section, and the outer pipe wall of the second pipe section is provided with a locking groove;
the button seat is fixed on the outer pipe wall of the first pipe section, and a hinge hole is formed in the button seat;
a locking button which is hinged to the button holder by a hinge shaft inserted into the hinge hole and includes a latch extending inward in a radial direction of the first pipe section; and
the locking spring is connected with the locking button and applies elasticity to the locking button, and the lock tongue on the locking button passes through the lock tongue hole and is clamped into the lock groove under the action of the elasticity;
the hinge hole has a width dimension larger than the hinge shaft in the axial direction of the first pipe section.
On the basis of the technical scheme, the insertion pipe further comprises the following preferable scheme:
the hinge hole is a waist-shaped hole.
The lock tongue has a front end face close to the second pipe section in the axial direction of the first pipe section and a rear end face far from the second pipe section, the lock tongue hole has a front hole wall face close to the second pipe section in the axial direction of the first pipe section and a rear hole wall face far from the second pipe section, and the lock tongue hole has a width dimension larger than that of the lock tongue in the axial direction of the first pipe section.
When the hinge shaft moves to an extreme position in the hinge hole along the axial direction of the first pipe section away from the second pipe section, the distance between the front hole wall surface of the lock tongue hole and the front end surface of the lock tongue is smaller than or equal to the difference between the width sizes of the hinge hole and the hinge shaft.
The hinge shaft is further from the second pipe section than the lock tongue in an axial direction of the first pipe section.
The front end face of the lock tongue includes an inclined surface portion that is fitted to the front hole wall face of the lock tongue hole, the inclined surface portion has an outer end that is away from a central axis of the first pipe section in a radial direction of the first pipe section and an inner end that is close to the central axis of the first pipe section, and the inner end is closer to the second pipe section than the outer end in an axial direction of the first pipe section.
The front hole wall surface of the lock tongue hole is an inclined surface matched with the inclined surface part on the front end surface.
The front hole wall surface of the lock tongue hole is an inclined surface, the inclined surface is provided with an outer side end far away from the central axis of the first pipe section and an inner side end close to the central axis of the first pipe section in the axis direction of the lock tongue hole, and the inner side end is closer to the second pipe section than the outer side end in the axis direction of the first pipe section.
The button seat and the first pipe section are of an integrated structure, the locking button and the hinge shaft are of an integrated structure, and the locking spring is a pressure spring clamped between the locking button and the first pipe section.
The outer pipe wall of the first pipe section is fixedly provided with a stop block positioned at the lock tongue hole, the stop block is closer to the second pipe section than the lock tongue in the axis direction of the first pipe section, the stop block is provided with a stop surface matched with the front end surface of the lock tongue, and the stop surface is farther away from the second pipe section than the front hole wall surface of the lock tongue hole in the axis direction of the first pipe section.
A dust collector comprises the insertion pipe with the structure. The inserting pipe is a handle pipe, a floor brush connecting pipe or a dust collection hose connecting pipe of the dust collector.
The application has the advantages that:
1) when two pipe sections of the inserting pipe are subjected to tensile force in the length direction, the locking button on the first pipe section can be in a locking state and cannot be separated from the locking groove on the second pipe section, and the two pipe sections of the inserting pipe cannot be separated accidentally during normal use.
2) The production mold of the insertion pipe is very simple and easy to manufacture.
3) The production cost of the splicing pipe is low.
4) The plug pipe does not need to exert large operating force when being plugged and pulled, and the use experience is good.
Drawings
The present application is further described with reference to the following figures and examples:
fig. 1 is an external view of an insertion tube according to a first embodiment of the present application;
FIG. 2 is a schematic cross-sectional view illustrating a first embodiment of the present disclosure when the plugging of the plugging tube is completed;
FIG. 3 is a schematic cross-sectional view illustrating a second pipe section of the insertion pipe under external tension according to an embodiment of the present invention;
FIG. 4 is an enlarged view of section X1 of FIG. 2;
FIG. 5 is an enlarged view of section X2 of FIG. 3;
fig. 6 is a schematic cross-sectional structure diagram of an insertion tube just after completion of insertion in the second embodiment of the present application;
FIG. 7 is a schematic cross-sectional view illustrating a second pipe section of the middle insertion pipe according to the second embodiment of the present invention under external tension;
fig. 8 is an enlarged view of the portion X3 of fig. 6;
fig. 9 is an enlarged view of the portion X4 of fig. 7;
wherein: 1-a first pipe section, 101-a lock tongue hole, 101 a-a front hole wall surface, 101 b-a rear hole wall surface, 2-a second pipe section, 201-a lock groove, 3-a button seat, 301-a hinge hole, 4-a locking button, 401-a hinge shaft, 402-a lock tongue, 402 a-a front end surface, 402 b-a rear end surface and 5-a locking spring.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present application. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally conditions used in routine experiments.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The terms "connected" and "coupled" when used herein, unless otherwise indicated, include both direct and indirect connections (couplings). As used herein, "affixed" includes both direct and indirect affixation, unless otherwise specified.
The first embodiment is as follows:
fig. 1 to 5 show a preferred embodiment of a socket tube of the present application, which is used as a handle tube of a vacuum cleaner, but can also be used as other tube members, such as a floor brush adapter of a vacuum cleaner for connecting the handle tube to a floor brush, or a suction hose adapter of a vacuum cleaner for connecting the handle tube to a suction hose. The same as the conventional bayonet tube, the bayonet tube also includes a first tube section 1, a second tube section 2, a button holder 3, a locking button 4, a locking spring 5, and the like. Wherein:
the first pipe section 1 and the second pipe section 2 are two parts of a split structure, and a lock tongue hole 101 is formed in the pipe wall of the first pipe section 1 in a penetrating mode. In fig. 1, the left end of the second pipe section 2 is inserted into the right end of the first pipe section 1, and a locking groove 201 is formed on the outer pipe wall of the second pipe section 2.
The button base 3 is integrally fixed on the outer pipe wall of the first pipe section 1, and a hinge hole 301 is formed in the button base 3. In this embodiment, the button holder 3 and the first pipe section 1 are made of plastic material and are integrally formed by injection molding.
The locking button 4 is hinged to the button holder 3 by a hinge shaft 401 inserted into the hinge hole 301, and the locking button 4 includes a latch 402 extending inward in a radial direction of the first pipe segment 1. The hinge shaft 401 and the locking button 4 are of an integral structure and are integrally formed by injection molding.
The locking spring 5 is clamped between the locking button 4 and the outer wall of the first pipe section 1 (as a compression spring), so as to apply an elastic force to the locking button 4. And the latch 402 on the locking button 4 passes through the latch hole 101 to be locked in the latch groove 201 under the action of the elastic force, so that the first pipe section 1 and the second pipe section 2 are fixedly connected.
The key improvement of the embodiment is as follows: the hinge hole 301 has a width dimension (or radial dimension) larger than the hinge shaft 401 in the axial direction of the first pipe segment 1.
The lock tongue 402 has a front end surface 402a close to the second pipe section 2 in the axial direction of the first pipe section 1 and a rear end surface 402b far from the second pipe section 2, the lock tongue hole 101 has a front hole wall surface 101a close to the second pipe section 2 in the axial direction of the first pipe section 1 and a rear hole wall surface 101b far from the second pipe section 2, and the lock tongue hole 101 has a width dimension larger than the lock tongue 402 in the axial direction of the first pipe section 1.
Referring to fig. 1 to 5 again, when the second pipe section 2 is just inserted into the first pipe section 1 and the latch 402 is inserted into the locking groove 201, the locking button 4 and the latch 402 on the locking button are moved to the left limit position in fig. 2 (the hinge 401 is located at the left end of the hinge hole 301) by the friction thrust of the outer wall of the second pipe section 2, and at this time, the front end face 402a of the latch 402 is spaced from the front wall face 101a of the latch hole 101, and there is no movement interference between the two, and the locking button 4 can rotate freely when pressed. When the second pipe segment 2 is subjected to a rightward pulling force F in fig. 2, the left groove wall of the locking groove 201 on the second pipe segment 2 pushes the locking button 4 and the locking tongue 402 on the locking button to move rightward (the hinge shaft 401 moves rightward relative to the hinge hole 301). When the front end face 402a of the latch 402 moves rightward until it contacts the front wall 101a of the latch hole 101, the latch 402 cannot move rightward. At this time, the front hole wall surface 101a of the lock tongue hole 101 and the front end surface 402a of the lock tongue 402 are pressed against each other to interfere with each other, and even if the lock tongue 402 is subjected to a large rightward pulling force, under the interference action of the front hole wall surface 101a of the lock tongue hole 101 on the movement of the lock tongue 402, the lock tongue 402 cannot be separated from the lock groove 201 outwards along the radial direction of the first pipe section 1, and then the second pipe section 2 cannot be separated from the first pipe section 1. In this case, if it is desired to release the second pipe section 2, the aforementioned rightward pulling force F is first removed, and the left end of the locking button 4 is pressed to rotate the locking button 4 counterclockwise around the hinge 401, and at the same time, the locking button 4 moves a certain distance leftward with respect to the first pipe section 1 (the second pipe section 2 is moved a small distance leftward by the force of the locking button 4), so that the latch tongue 402 is disengaged from the latch groove 201, and the second pipe section 2 can be withdrawn rightward.
Referring to fig. 4 and 5 again, in the present embodiment, when the hinge shaft 401 moves to the left limit position in the hinge hole 301, a distance L2 between the front hole wall surface 101a of the latch hole 101 and the front end surface 402a of the latch 402 is smaller than or equal to a difference L1 between the width dimensions of the hinge hole 301 and the hinge shaft 401. This ensures that the hinge shaft 401 has a sufficiently large axial displacement (in this application, unless otherwise specified, the term "axial" refers to the first pipe segment 1) in the hinge hole 301, so that the front end surface 402a of the latch 402 can be sufficiently contacted with the front hole wall surface 101a of the latch hole 101 when the second pipe segment 2 is subjected to the right-hand pulling force F.
In this embodiment, the hinge shaft 401 is further away from the second pipe section 2 than the latch 402 in the axial direction of the first pipe section 1. That is, the latch 402 is disposed at the front end of the locking button 4 (the end close to the second pipe section), and when the locking button is used, the user presses the rear end of the locking button 4 to release the second pipe section 2, so that the operation habit of the user can be better fitted, and the ergonomics can be better met.
In the present application, unless otherwise specified, the terms "away from the second pipe section" and "close to the second pipe section" refer to "a right end portion away from the second pipe section" and "a right end portion close to the second pipe section" in fig. 1, respectively.
In this embodiment, the front end surface 402a of the latch 402 includes an inclined surface portion that engages with the front hole wall surface 101a of the latch hole 101. The ramp portion has an outer end that is distant from the center axis of the first pipe section 1 in the radial direction of the first pipe section 1 and an inner end that is close to the center axis of the first pipe section 1, and the inner end is closer to the second pipe section 2 than the outer end in the axial direction of the first pipe section 1. It is understood that the arrangement of the front end face 402a of the latch 402 in this way can further improve the resistance of the front hole wall 101a of the latch hole 101 to the movement of the latch 402.
Further, the front hole wall surface 101a of the latch hole 101 is a slope surface adapted to the slope surface portion of the front end surface 402 a.
Specifically, the front hole wall surface 101a of the latch hole 101 is an inclined surface having an outer end distant from the central axis of the first pipe segment 1 and an inner end close to the central axis of the first pipe segment 1 in the axial direction of the latch hole 101, and the inner end is closer to the second pipe segment 2 than the outer end in the axial direction of the first pipe segment 1.
Obviously, the front hole wall surface 101a of the tongue hole 101 may also be a vertical surface perpendicular to the central axis of the first pipe segment 1, or may even be a reverse inclined surface opposite to the inclined surface, and also has the function of preventing the tongue 402 from moving outward in the radial direction of the first pipe segment 1. However, when the front hole wall surface 101a of the tongue hole 101 is formed in the inclined surface structure of the present embodiment, the movement resistance of the lock tongue 402 is stronger. It should be noted that if the front hole wall surface 101a of the tongue hole 101 is provided with a reverse slope opposite to the slope of the above slope, the slope of the reverse slope is not too large to prevent the locking tongue 402 from easily climbing over the reverse slope and moving out of the locking groove 201 by a rightward pushing force.
In order to further strengthen the blocking effect on the latch 402, a stop at the position of the latch hole 101 may be fixedly arranged on the outer wall of the first pipe section 1. And the stopper is closer to the second pipe section 2 than the latch tongue 402 in the axial direction of the first pipe section 1, has a stopper surface which is engaged with the front end surface 402a of the latch tongue 402, and is further away from the second pipe section 2 than the front hole wall surface 101a of the latch tongue hole 101 in the axial direction of the first pipe section 1.
It will be understood that the stop surface of the stopper has the same function as the front hole wall surface 101a of the latch hole 101, and both stop the latch 402 from moving radially outward.
Example two:
fig. 6 to 9 show another embodiment of the plugging tube of the present application, which is substantially the same as the plugging tube of the first embodiment, except that: in the present embodiment, when the hinge shaft 401 reaches the left limit position in the hinge hole 301, the distance L2 between the front hole wall surface 101a of the latch hole 101 and the front end surface 402a of the latch 402 is larger than the difference L1 between the width dimensions of the hinge hole 301 and the hinge shaft 401. That is, in fig. 8, the distance between the front hole wall surface 101a of the latch hole 101 and the front end surface 402a of the latch 402 is relatively large.
Referring to fig. 6 to 9 again, when the second pipe segment 2 in fig. 6 is subjected to a rightward pulling force F, the left groove wall of the locking groove 201 on the second pipe segment 2 pushes the locking button 4 and the locking tongue 402 on the locking button to move rightward. When the hinge shaft 401 moves to the right limit position relative to the hinge hole 301, the locking button 4 and the locking tongue 402 on the locking button 4 cannot move to the right due to the limit action of the hole wall of the hinge hole 301, and at this time, a large gap exists between the front end face 402a of the locking tongue 402 and the front hole wall face 101a of the locking tongue hole 101, and the gap distance is L2. If the pulling force F is still maintained, the latch 402 may rotate counterclockwise around the hinge shaft 401 under the pushing force of the left side groove wall of the lock groove 201, and when the front end face 402a of the latch 402 rotates by a certain angle, the front end face contacts with the front hole wall 101a of the latch hole 101, the front hole wall 101a of the latch hole 101 prevents the latch 402 from rotating continuously, the latch 402 cannot be completely separated from the lock groove 201 (at this time, because the latch 402 rotates counterclockwise by a certain angle around the hinge shaft 401, a certain gap may exist between the latch 402 and the bottom wall of the lock groove 201, as shown in fig. 9), and the second pipe segment 2 may not be pulled out rightward.
It should be understood that the above-mentioned embodiments are only illustrative of the technical concepts and features of the present application, and the present application is not limited thereto. All equivalent changes and modifications made according to the spirit of the main technical scheme of the application are covered in the protection scope of the application.
Claims (10)
1. A bayonet tube, comprising:
the pipe wall of the first pipe section (1) is provided with a lock tongue hole (101) in a through way;
one end of the second pipe section (2) is inserted into the first pipe section (1), and a locking groove (201) is formed in the outer pipe wall of the second pipe section (2);
the button seat (3) is fixed on the outer pipe wall of the first pipe section (1), and a hinge hole (301) is formed in the button seat (3);
a locking button (4) hinged to the button base (3) by a hinge shaft (401) penetrating into the hinge hole (301), and the locking button (4) includes a latch tongue (402) extending inward in a radial direction of the first pipe section (1); and
the locking spring (5) is connected with the locking button (4) and applies elastic force to the locking button (4), and the bolt (402) on the locking button (4) passes through the bolt hole (101) under the action of the elastic force and is clamped into the locking groove (201);
the method is characterized in that: the hinge hole (301) has a width dimension larger than the hinge shaft (401) in the axial direction of the first pipe section (1);
the hinge hole (301) is a waist-shaped hole;
the lock tongue (402) has a front end surface (402 a) close to the second pipe section (2) and a rear end surface (402 b) far from the second pipe section (2) in the axial direction of the first pipe section (1), the lock tongue hole (101) has a front hole wall surface (101 a) close to the second pipe section (2) and a rear hole wall surface (101 b) far from the second pipe section (2) in the axial direction of the first pipe section (1), and the lock tongue hole (101) has a width dimension larger than the lock tongue (402) in the axial direction of the first pipe section (1).
2. The bayonet tube of claim 1, further comprising: when the hinge shaft (401) moves to an extreme position away from the second pipe section (2) in the axial direction of the first pipe section (1) in the hinge hole (301), the distance (L2) between the front hole wall surface (101 a) of the lock tongue hole (101) and the front end surface (402 a) of the lock tongue (402) is smaller than or equal to the difference (L1) between the hinge hole (301) and the width dimension of the hinge shaft (401).
3. The bayonet tube of claim 1, wherein: in the axial direction of the first pipe section (1), the hinge shaft (401) is further away from the second pipe section (2) than the locking tongue (402).
4. The bayonet tube of claim 3, wherein: the front end surface (402 a) of the lock tongue (402) includes a slope portion that fits the front hole wall surface (101 a) of the lock tongue hole (101), the slope portion having an outer end that is distant from a central axis of the first pipe section (1) in a radial direction of the first pipe section (1) and an inner end that is close to the central axis of the first pipe section (1), and the inner end being closer to the second pipe section (2) than the outer end in an axial direction of the first pipe section (1).
5. The bayonet tube of claim 4, wherein: the front hole wall surface (101 a) of the lock tongue hole (101) is an inclined surface which is matched with the inclined surface part on the front end surface (402 a).
6. The bayonet tube of claim 3, wherein: the front hole wall surface (101 a) of the lock tongue hole (101) is an inclined surface, the inclined surface has an outer side end far away from the central axis of the first pipe section (1) and an inner side end close to the central axis of the first pipe section (1) in the axial direction of the lock tongue hole (101), and the inner side end is closer to the second pipe section (2) than the outer side end in the axial direction of the first pipe section (1).
7. The bayonet tube of claim 1, further comprising: the button seat (3) and the first pipe section (1) are of an integral structure, the locking button (4) and the hinge shaft (401) are of an integral structure, and the locking spring (5) is a pressure spring clamped between the locking button (4) and the first pipe section (1).
8. The bayonet tube of claim 1, wherein: the outer pipe wall of the first pipe section (1) is fixedly provided with a stop block positioned at the position of the lock tongue hole (101), the stop block is closer to the second pipe section (2) than the lock tongue (402) in the axial direction of the first pipe section (1), the stop block is provided with a blocking surface matched with the front end surface (402 a) of the lock tongue (402), and the blocking surface is farther away from the second pipe section (2) than the front hole wall surface (101 a) of the lock tongue hole (101) in the axial direction of the first pipe section (1).
9. A vacuum cleaner comprising a socket tube according to any one of claims 1 to 8.
10. A vacuum cleaner as claimed in claim 9, characterized in that the plug-in tube is a handle tube, a floor brush tube or a suction hose tube of the vacuum cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721645.8A CN107280587B (en) | 2017-08-22 | 2017-08-22 | Insertion pipe and dust collector with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721645.8A CN107280587B (en) | 2017-08-22 | 2017-08-22 | Insertion pipe and dust collector with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107280587A CN107280587A (en) | 2017-10-24 |
| CN107280587B true CN107280587B (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710721645.8A Active CN107280587B (en) | 2017-08-22 | 2017-08-22 | Insertion pipe and dust collector with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107280587B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201055349Y (en) * | 2007-06-28 | 2008-05-07 | 朱建东 | Telescopic siphon for dust collection device |
| WO2009152768A1 (en) * | 2008-06-20 | 2009-12-23 | 广州耀轮车业有限公司 | Foldable connector for pipe fittings and locking device |
| CN101849806A (en) * | 2009-03-31 | 2010-10-06 | 乐金电子(天津)电器有限公司 | Sliding sleeve dust absorption flexible pipe connection structure for dust collector |
| CN201729232U (en) * | 2010-07-08 | 2011-02-02 | 徐达来 | Folding joint |
| CN201831811U (en) * | 2010-07-01 | 2011-05-18 | 杨卫丰 | Telescopic sleeve and dust catcher with same |
-
2017
- 2017-08-22 CN CN201710721645.8A patent/CN107280587B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201055349Y (en) * | 2007-06-28 | 2008-05-07 | 朱建东 | Telescopic siphon for dust collection device |
| WO2009152768A1 (en) * | 2008-06-20 | 2009-12-23 | 广州耀轮车业有限公司 | Foldable connector for pipe fittings and locking device |
| CN101849806A (en) * | 2009-03-31 | 2010-10-06 | 乐金电子(天津)电器有限公司 | Sliding sleeve dust absorption flexible pipe connection structure for dust collector |
| CN201831811U (en) * | 2010-07-01 | 2011-05-18 | 杨卫丰 | Telescopic sleeve and dust catcher with same |
| CN201729232U (en) * | 2010-07-08 | 2011-02-02 | 徐达来 | Folding joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107280587A (en) | 2017-10-24 |
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