CN211155538U - Bed dust collector - Google Patents
Bed dust collector Download PDFInfo
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- CN211155538U CN211155538U CN201921723921.5U CN201921723921U CN211155538U CN 211155538 U CN211155538 U CN 211155538U CN 201921723921 U CN201921723921 U CN 201921723921U CN 211155538 U CN211155538 U CN 211155538U
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- transverse section
- suction unit
- air suction
- cup
- dust
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Abstract
The utility model discloses a bed dust collector, which comprises a shell, a dust collecting cup and an air suction unit; the shell comprises a transverse section and a vertical section, wherein the bottom of the transverse section is provided with an air suction opening, and the vertical section is connected to the rear side of the transverse section to form a T-shaped structure; the dust collecting cup is detachably connected to the outer side of the rear side wall of the transverse section, and an airflow inlet of the side wall of the dust collecting cup is adjacently butted with an airflow outlet of the rear side wall of the transverse section; the air suction unit is fixed on the outer side of the rear side wall of the transverse section, so that the heat dissipation of the fan is improved; the dust collecting cup and the air suction unit are correspondingly connected along the same axis and are respectively positioned on two sides of the central axis of the vertical section, so that the gravity is uniformly distributed, and the appearance is concise and attractive.
Description
Technical Field
The utility model relates to a dust catcher technical field especially relates to a bed dust catcher.
Background
A bed dust collector is a common household cleaning appliance, and mainly performs dust and mite removal cleaning work on beds, quilts or sofas and the like by means of dust collection of a fan and sterilization and mite removal of an ultraviolet lamp tube.
Notice No. is CN 208941989U's cleaning device and mite removing appearance, it includes the organism, and the organism top is provided with the installation department, and in the installation department was located to dirt cup detachably, the suction motor was established in the casing, had first intercommunication mouth and second intercommunication mouth on the installation department, first intercommunication mouth was used for communicating dirty air inlet to the income wind gap of dirt cup, and the second intercommunication mouth is used for communicating the entry of suction motor to the air exit of dirt cup.
The utility model discloses a notice number is CN 205695192U's a novel mite appearance that removes, filter equipment, dust absorption motor are located the casing, and filter equipment sets up in dust absorption motor front end, and the dust absorption window sets up under the dust absorption motor.
Heat generated by the motor of the existing bed dust collector may damage electronic components such as a circuit board.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a bed dust catcher that structural configuration is reasonable is provided, after the unit that induced drafts independently arranges, its radiating effect is better, and can not produce adverse effect to other electrical components of dust catcher.
The utility model provides a technical scheme that above-mentioned technical problem provided does: the bed dust collector comprises a shell, a dust collecting cup and an air suction unit;
the shell comprises a transverse section and a vertical section, wherein the bottom of the transverse section is provided with an air suction opening, and the vertical section is connected to the rear side of the transverse section to form a T-shaped structure;
the dust collecting cup is detachably connected to the outer side of the rear side wall of the transverse section, and an airflow inlet of the side wall of the dust collecting cup is adjacently butted with an airflow outlet of the rear side wall of the transverse section;
the air suction unit is fixed on the outer side of the rear side wall of the transverse section, and the dust cup and the air suction unit are correspondingly connected along the same axis and are respectively positioned on two sides of the central axis of the vertical section;
the air inlet channel of the air suction unit is adjacently butted with the air outlet channel of the dust cup and is positioned on the axis.
The utility model discloses a further preferred scheme does: the dust collecting cup and the air suction unit are both cylindrical parts, and the rear side wall of the transverse section is provided with an arc surface matched with the outer surfaces of the dust collecting cup and the air suction unit.
The utility model discloses a further preferred scheme does: the upper part of the vertical section is provided with a convex connecting part, the connecting part is provided with a mounting hole, and one end of the air suction unit penetrates into the mounting hole and is fixed on the connecting part.
The utility model discloses a further preferred scheme does: the air suction unit comprises a fan cover, a fan and an end cover provided with an air inlet channel, the fan cover of the built-in fan penetrates into the connecting part from one end of the mounting hole, and the end cover is fixed at the other end of the mounting hole.
The utility model discloses a further preferred scheme does: a locking structure is arranged between the end cover and the dust collecting cup so that the dust collecting cup can be detachably connected on the end cover.
The utility model discloses a further preferred scheme does: the tail end of the vertical section is connected with a handle which inclines upwards, and the upper part of the connecting part extends backwards in an inclined mode and is connected with the upper end of the handle.
The utility model discloses a further preferred scheme does: a sealing part is arranged on the periphery of the airflow outlet of the transverse section; the inner side of the airflow inlet of the dust collecting cup is provided with a baffle plate for shielding.
The utility model discloses a further preferred scheme does: the dust collecting cup comprises a shell with one open end, an annular mounting part and a filtering component;
the filtering component is clamped in the middle of the annular mounting part;
the inner wall of the open end of the shell is provided with an annular bulge, and the annular installation part is placed on the annular bulge.
The utility model discloses a further preferred scheme does: the filter element assembly comprises a cylindrical inner filter element and a cylindrical outer filter element; the outer filter core of tube-shape cover outside the inner filter core of tube-shape, the inner end of filter core is sealed in the tube-shape, the outer end opening of filter core in the tube-shape and butt joint in the middle through-hole of annular installation department.
The utility model discloses a further preferred scheme does: the bottom of horizontal section be equipped with the vibration that can pat the cleaning object surface and pat module and ultraviolet sterilization module, the vibration pat module be located horizontal section foremost.
Compared with the prior art, the utility model has the advantages that the air suction unit is fixed at the outer side of the rear side wall of the transverse section of the shell, and the air suction unit is independently arranged, thus improving the heat dissipation of the fan; furthermore, the dust cup and the air suction unit are correspondingly connected with two sides of the vertical section of the shell along the same axis, so that the gravity is uniformly distributed, and the appearance is simple and attractive.
Drawings
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.
FIG. 1 is a perspective view of a preferred embodiment of the present invention;
FIG. 2 is a top view of a preferred embodiment of the present invention;
fig. 3 is a left side view of a preferred embodiment of the present invention;
fig. 4 is a bottom view of a preferred embodiment of the present invention;
fig. 5 is an exploded view of a preferred embodiment of the present invention;
fig. 6 is a perspective view of an upper housing of a preferred embodiment of the present invention;
fig. 7 is a right side view of the upper housing of a preferred embodiment of the present invention;
fig. 8 is an exploded view of an air suction unit according to a preferred embodiment of the present invention;
figure 9 is a perspective view of a dust cup in accordance with a preferred embodiment of the present invention;
figure 10 is an exploded view of a dirt cup in accordance with a preferred embodiment of the present invention;
fig. 11 is an exploded view of a filter assembly according to a preferred embodiment of the present invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.
It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "first", "second", and the like are merely used for distinguishing between descriptions and are not to be construed as indicating or implying any relative importance, and those skilled in the art can specifically understand the specific meaning of the above terms in the present invention.
As shown in fig. 1 to 5, a bed dust collector is an apparatus for performing a cleaning work of removing dust and mites on a bed, a quilt, a sofa, or the like. Which comprises a housing 001, a handle 002, a dust cup 003 and an air suction unit 004. Wherein the housing 001 includes a horizontal section 01 extending horizontally and a vertical section 02 extending rearward from the middle of the horizontal section 01. The vertical section is connected to the rear side of the horizontal section, and the central axis of the vertical section 02 is perpendicular to the horizontal section 01 so that the horizontal section 01 and the vertical section 02 are distributed in a T shape.
The dust collecting cup 003 and the air suction unit 004 are correspondingly connected along the same axis, abut against the rear side of the transverse section 01 and are respectively positioned on two sides of the central axis of the vertical section 02. The unit 004 that induced drafts sets up and is favorable to the heat dissipation outside casing 001, and induced drafts the unit 004 and keeps away from handle 002 for user's comfort level increases.
A handle 002 is provided at the end of the vertical section 02. In order to further optimize the structural layout and improve the convenience of the bed dust collector, as shown in fig. 3, in the embodiment, the handle 002 extends from the vertical section 02 to the front inclined direction, the inclined angle of the handle 002 is preferably 45-70 degrees, and a user can push the mite removing instrument forward more conveniently.
As shown in fig. 5, the bed vacuum cleaner provided by the present embodiment is supplied with electric power from a battery assembly 005 provided in the vertical section 02 of the housing 001. The battery assembly 005 is installed in the end of the vertical section 02 of the housing 001 directly below the handle 002 and is fixed on the inner surface of the lower housing 001. The battery module 005 comprises a plurality of rechargeable batteries, which are arranged side by side and extend in a direction perpendicular to the central axis of the vertical section 02. By the aid of the layout mode of the battery assembly 005, the gravity center of the whole bed dust collector moves backwards, so that the moment between the handle 002 and the gravity center is shortened, work is reduced when the bed dust collector is held by a hand to perform cleaning operation, and convenience of the bed dust collector is improved; secondly, the distance between the battery pack 005 and the air suction unit 004 is far away, so that the phenomenon that the performance and the service life of the battery pack 005 are influenced by the heat generated during the work of the air suction unit 004 is avoided, and the unsafety caused by battery overheating is also reduced.
Specifically, as shown in fig. 3, 5-7, the front end of the vertical section 02 is provided with a coupling portion 1 projecting upward; the connecting part 1 is provided with a mounting hole 2 for fixing an air suction unit 004, and the mounting hole 2 is vertically arranged in a left-right through manner and is positioned behind the transverse section 01. A vertical annular fixing part 3 is arranged in the mounting hole 2, connecting holes are formed in two sides of the annular fixing part 3, and a circular grid structure 4 is arranged in the middle of the annular fixing part 3.
As shown in fig. 8, the suction unit 004 is a cylindrical member including a cylindrical fan cover 03, a direct current fan 04 fixed in the fan cover 03, an end cap 05, and a rear cover 010 provided with an air outlet 5.
As shown in fig. 1 to 3 and 5 to 7, a fan guard 03 is inserted from one end of the mounting hole 2 and coupled to the coupling hole of the ring-shaped fixing portion 3 with a screw. It should be noted that the size of the mounting hole 2 is adapted to the fan cover 03, so that the mounting hole 2 supports and fixes the air suction unit 004.
The end cap 05 is fixed to the coupling hole of the ring fixing portion 3. The middle of the end cover 05 is provided with a through hole, and the circular grid structure 4 of the annular fixing part 3 is opposite to the direct current fan 04 through the through hole of the end cover 05 to form an air inlet channel of the air suction unit 004 extending along the central axis of the fan cover 03.
The rear cover provided with the air outlet 5 is positioned at the outer end part of the fan cover 03 and is positioned on the same axis with the air inlet channel of the air suction unit 004.
Further, as shown in fig. 6, in order to make the layout more compact, the rear side wall of the transverse section 01 forms a concave first arc surface 011 matched with the shape of the air suction unit 004, and the outer surface of the fan cover 03 abuts against the first arc surface 011 to further support the air suction unit 004 and reduce the vibration of the air suction unit 004 when the fan works.
As shown in fig. 9-10, the dirt cup 003 includes a housing 06 open at one end and an internally disposed annular mounting portion 07 and filter assembly 08.
As shown in fig. 1-2, wherein the housing 06 is cylindrical with the same diameter as the fan guard 03. The shell 06 of the dust collecting cup 003 is symmetrically distributed with the fan cover 03, so that the whole bed dust collector has a simple and attractive appearance, the gravity is uniformly distributed, and the center of gravity is positioned near the central axis of the vertical section 02.
As shown in fig. 1-2 and 5-7, the open end of the casing 06 of the dust cup 003 is penetrated from the other end of the fitting hole 2, and the front end thereof is fitted in the fitting hole 2. A locking structure is provided between the housing 06 of the dust cup 003 and the ring-shaped fixing portion 3 so that the dust cup 003 is detachably coupled to the ring-shaped fixing portion 3.
Preferably, as shown in fig. 7 and 9, the locking structure comprises a raised positioning member 6 on the annular fixing portion 3 and axially distributed guide channels 7 and positioning grooves 8 on the inner wall of the dirt cup 003.
Specifically, the annular fixing portion 3 has a boss corresponding to the inner diameter of the housing 06 of the dust cup 003, and the projecting positioning member 6 is a hemispherical projection on the peripheral side of the boss. Correspondingly, the guide channel 7 and the positioning slot 8 are arranged at the inner wall of the housing 06 of the dust cup 003 and are matched with the protruding positioning element 6.
The guide channel 7 and the positioning groove 8 are distributed side by side along the inner wall of the housing 06 and are communicated with each other. The guide channel 7 extends to the outer port of the housing 06, the guide channel 7 corresponding to the depth of the positioning groove 8 on the inner wall of the housing 06. The raised locating elements 6 enter the inner wall of the housing 06 from the guide channels 7. When the dust collecting cup 003 rotates from the guide passage 7 to the direction of the positioning groove 8, the raised positioning piece 6 enters the positioning groove 8, thereby realizing the axial clamping connection of the dust collecting cup 003 and the end cover 05; when the dust cup 003 is rotated in the reverse direction, the protrusion positioning member 6 enters the guide passage 7, and the dust cup 003 can be detached from the cap 05.
It will be appreciated that as shown in figure 6 the rear side wall of the transverse section 01 forms a concave second arc 012 matching the profile of the dirt cup 003, the outer wall of the dirt cup 003 abutting against the second arc 012.
Further, as shown in fig. 10, the outer diameter of the annular mounting part 07 of the dust cup 003 is matched with the inner diameter of the housing 06 of the dust cup 003, and the outer ring of the annular mounting part 07 is sleeved with a sealing ring, so that when the annular mounting part 07 is assembled in the housing 06, the annular mounting part 07 is tightly matched with the inner wall of the housing 06, and the sealing ring is radially pressed to achieve a sealing effect.
And, an annular boss portion is provided on an inner wall of the open end of the housing 06, and the annular mounting portion 07 rests on the annular boss portion to thereby achieve axial positioning of the annular mounting portion 07.
The filtering component 08 is detachably clamped in the middle of the annular mounting part 07, and the filtering component 08 is positioned on one side of the annular mounting part 07 far away from the open end.
As shown in fig. 11, the filter assembly 08 includes a cylindrical inner filter element 081 and a cylindrical outer filter element 082, which is fitted over the cylindrical inner filter element 081. The outer cartridge 082 is cylindrical and comprises a plastic frame 10 and a metal screen 11 for coarse filtration. The outer wall of the plastic frame 10 is provided with a latch tongue which can be clamped in the clamping groove of the annular mounting part 07, so that the filtering component 08 is fixed on the annular mounting part 07.
The inner end of the cylindrical inner filter element 081 is closed, the outer end is opened and is butted with the middle through hole of the annular mounting part 07, and therefore an air outlet channel of the dust cup 003 is formed. More specifically, the inner end of the cylindrical inner filter element 081 is a circular plastic bottom cover 12, the outer end is an annular plastic support base 13, and a hypa filter screen 14 for fine filtration is arranged between the two.
As shown in FIGS. 4-6 and 9-10, the bottom of the horizontal section 01 and the vertical section 02 are integrally injection molded to form a lower housing 200 with a horizontal bottom. Wherein, the lower casing 001 of horizontal section 01 is provided with inlet scoop 15, and inlet scoop 15 and the air current chamber UNICOM in the horizontal section 01. An airflow outlet 16 is arranged on the second arc surface 012 of the transverse section 01; the airflow outlet 16 is in abutment with an airflow inlet 17 of a dirt cup 003 provided in a side wall of the housing 06 of the dirt cup 003.
As shown in fig. 10, the air inlet 17 of the dirt cup 003 is provided with a stopper 18, and the stopper 18 is a plastic or rubber sheet having one side attached to the inner wall of the dirt cup 003. When the mite killing instrument is operated, external air flows into the dust collecting cup 003, the baffle plate 18 can be opened on one side under the action of air pressure so that the external air flows into the dust collecting cup 003, the opening angle is less than 30 degrees, and large sundries are prevented from being sucked into the dust collecting cup 003; when the bed vacuum cleaner is in a standby state, the blocking piece 18 blocks the air inlet 17, so that dust filtered by the filter assembly 08 in the dust cup 003 is prevented from falling out of the air inlet 17 of the housing 06 of the dust cup 003.
Preferably, as shown in fig. 6, the second arc surface 012 at the airflow outlet 16 of the transverse section 01 has a recess 19, and the outer ring of the airflow inlet 17 of the dust cup 003 is protruded to form a flange 20, and the height of the flange 20 is consistent with the depth of the recess 19. And an elastic sealing member 21 is provided outside the airflow outlet 16, and the flange 20 is pressed against the sealing member 21 to seal between the lateral section 01 and the dirt cup 003.
When the mite killing instrument runs, the fan rotates at a high speed, external air flows in from the air suction opening 15, and flows into the dust collecting cup 003 from the air outlet 16 on the second arc surface 012 of the transverse section 01 through the air flow cavity. Air enters the air inlet channel of the air suction unit 004 from the air outlet channel of the dust collecting cup 003 after being filtered by the filtering component 08 of the dust collecting cup 003 and flows out from the air outlet 5 arranged at the outer end of the fan cover 03.
As shown in fig. 4 and 5, as a specific preferred embodiment, the bottom of the lower shell 001 of the transverse section 01 is further provided with a vibration beating module 006 and an ultraviolet sterilization module 007 which can beat the surface of the cleaning object.
The vibrating and flapping module 006 is disposed at the foremost end of the lower housing 001 of the transverse section 01, and includes two vibrating heads 09 symmetrically distributed at left and right sides and an eccentric motor located in the transverse section 01 of the housing 001.
The eccentric motor operates to mechanically vibrate the vibration head 09 to separate dust, microorganisms, mites and the like in the objects to be cleaned, such as sofas, beds, mattresses and the like, from the objects to be cleaned, so that the air suction unit 004 can conveniently suck the dust, microorganisms, mites and the like into the dust collecting cup 003.
As shown in fig. 1 to 7, the upper portion of the coupling portion 1 is connected to the upper end of the handle 002, and preferably, the handle 002, the coupling portion 1, and the upper portions of the horizontal and vertical sections 01 and 02 are formed by integrally injection molding plastic into the upper housing 100. Specifically, the upper surface of the coupling portion 1 is a first inclined surface 013 extending obliquely upward rearward from the transverse section 01, and a tip end of the first inclined surface 013 extends up to an upper end surface of the handle 002. The rear side of the coupling part 1 has a second inclined surface 014 with a certain distance between the second inclined surface 014 and the front surface of the handle 002, and the upper part of the second inclined surface 014 extends in a curved manner toward the handle 002 and is connected to the front surface of the handle 002. Therefore, the coupling portion 1, the vertical section 02 and the handle 002 are enclosed to form a triangle-like structure with a through hole, so that the whole structure is more stable and reliable.
In this embodiment, as shown in fig. 1-2 and 5-6, a switch 008 is provided on the first slope 013 at the position of the upper end of the handle 002. The switch 008 is electrically connected with the air suction unit 004 and the vibration beating module 006, and can control the bed dust collector to open and close and the vibration beating module 006 to operate. When the user holds the handle 002 with one hand, the switch 008 can be pressed by the thumb of the hand, thereby facilitating the cleaning work of the user.
It should be noted that the structural layout provided by the present embodiment, except for the battery assembly 005, can be applied to a wired bed vacuum cleaner. The power cord may be accessed from the end of the vertical section 02 and the blower of the suction unit 004 may be an ac blower.
It introduces in detail above the utility model provides a bed dust catcher, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the description of above embodiment is only used for helping understanding the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The bed dust collector is characterized by comprising a shell, a dust collecting cup and an air suction unit;
the shell comprises a transverse section and a vertical section, wherein the bottom of the transverse section is provided with an air suction opening; the vertical section is connected to the rear side of the transverse section to form a T-shaped structure;
the dust collecting cup is detachably connected to the outer side of the rear side wall of the transverse section, and an airflow inlet of the side wall of the dust collecting cup is adjacently butted with an airflow outlet of the rear side wall of the transverse section;
the air suction unit is fixed on the outer side of the rear side wall of the transverse section, and the dust cup and the air suction unit are correspondingly connected along the same axis and are respectively positioned on two sides of the central axis of the vertical section;
the air inlet channel of the air suction unit is adjacently butted with the air outlet channel of the dust cup and is positioned on the axis.
2. The bed dust collector as claimed in claim 1, wherein the dust cup and the air suction unit are cylindrical parts, and the rear side wall of the transverse section has a circular arc surface matched with the outer surfaces of the dust cup and the air suction unit.
3. The bed vacuum cleaner as claimed in claim 1, wherein the vertical section has a coupling portion protruded upward, the coupling portion having a mounting hole, and one end of the suction unit is inserted into the mounting hole and fixed to the coupling portion.
4. The bed dust collector as claimed in claim 3, wherein the suction unit comprises a fan housing, a fan and an end cap provided with an air inlet passage, the fan housing of the fan penetrates into the coupling portion from one end of the mounting hole, and the end cap is fixed to the other end of the mounting hole.
5. A bed cleaner as defined in claim 4 wherein a catch arrangement is provided between the end cap and the dirt cup to enable the dirt cup to be releasably attached to the end cap.
6. A bed vacuum cleaner as defined in claim 3 wherein the vertical section terminates in an upwardly inclined handle, the upper portion of the coupling extending rearwardly at an angle and being connected to the upper end of the handle.
7. The bed vacuum cleaner as set forth in claim 1, wherein the air flow outlet of the lateral section is provided at its periphery with a sealing member; the inner side of the airflow inlet of the dust collecting cup is provided with a baffle plate for shielding.
8. A bed vacuum cleaner as defined in claim 2 wherein the dirt cup includes a housing open at one end, an annular mounting portion and a filter assembly;
the filtering component is clamped in the middle of the annular mounting part;
the inner wall of the open end of the shell is provided with an annular bulge, and the annular installation part is placed on the annular bulge.
9. The bed cleaner as defined in claim 8 wherein the filter assembly includes a cylindrical inner filter element and a cylindrical outer filter element; the outer filter core of tube-shape cover outside the inner filter core of tube-shape, the inner end of filter core is sealed in the tube-shape, the outer end opening of filter core in the tube-shape and butt joint in the middle through-hole of annular installation department.
10. The bed vacuum cleaner as claimed in claim 1, wherein the bottom of the transverse section is provided with a vibration beating module for beating the surface of the cleaning object and an ultraviolet sterilization module, and the vibration beating module is located at the foremost end of the transverse section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921723921.5U CN211155538U (en) | 2019-10-15 | 2019-10-15 | Bed dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921723921.5U CN211155538U (en) | 2019-10-15 | 2019-10-15 | Bed dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211155538U true CN211155538U (en) | 2020-08-04 |
Family
ID=71817222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921723921.5U Active CN211155538U (en) | 2019-10-15 | 2019-10-15 | Bed dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211155538U (en) |
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2019
- 2019-10-15 CN CN201921723921.5U patent/CN211155538U/en active Active
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