CN207244519U - A kind of hand-push type floor sweeper - Google Patents
A kind of hand-push type floor sweeper Download PDFInfo
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- CN207244519U CN207244519U CN201721311442.3U CN201721311442U CN207244519U CN 207244519 U CN207244519 U CN 207244519U CN 201721311442 U CN201721311442 U CN 201721311442U CN 207244519 U CN207244519 U CN 207244519U
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- wheel
- bevel gear
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- push type
- hand
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Abstract
The utility model provides a kind of hand-push type floor sweeper, including vehicle frame, front vehicle wheel, rear wheel, sweep head and shovel hopper, a rotation axis has been rotatably fixed on the car body, has further included first bevel gear, second bevel gear, first pulley, the second belt wheel and the crossbeam above the rotation axis；The first bevel gear is fixed in the rotation axis, coaxially connected with the front vehicle wheel；The first bevel gear is engaged with the second bevel gear；The second bevel gear and the first pulley are coaxially connected, and are rotatably arranged on the crossbeam；The first pulley is connected by belt with second belt wheel；Second belt wheel is swept coaxially connected with described, and is rotatably arranged in the front of the quadrilateral frame；The notch position adjoining for sweeping head and the shovel hopper, realizes the multiple acceleration of rotation, improves the efficiency for collecting rubbish, and cleaning effect is good, simple in structure, easy to use.
Description
Technical field
Floor sweeping tool is the utility model is related to, more particularly to a kind of hand-push type floor sweeper.
Background technology
Rear axle is fixed in existing hand-push type floor sweeper, the posterior end of rack by bearing, after left and right is fixed at the both ends of rear axle
Rubber tire, also fixed big sprocket wheel, minor sprocket engage with big sprocket wheel by chain are fixed on front axle, sweep into and take turns both sides on rear axle
Left and right belt pulley is fixed on front axle respectively, the both ends of front axle are fixed in rack by bearing, and the front left bottom righthand side of rack passes through
Bearing fixes left and right concentration sweeping wheel respectively, and left and right concentration sweeping wheel passes through left and right belt and the left and right belt pulley phase respectively
Even, be only driven by chain, and then by left and right belt drive sweep head rotate, only realize and once accelerate, it is complicated and
Sweeper to sweep a velocity of rotation slow, it is poor to clean effect.
Utility model content
The defects of in order to overcome the above-mentioned prior art, technical problem to be solved in the utility model are to provide a kind of structure
Simply, the good hand-push type floor sweeper of effect is cleaned.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of hand-push type floor sweeper, including vehicle frame, front vehicle wheel, rear wheel, sweep head and shovel hopper, the bottom of frame be one
Quadrilateral frame, the rear wheel are arranged on the rear end of the quadrilateral frame, and described quadrilateral frame the right and left is rotationally
A rotation axis is fixed with, the rotation axis both ends are each to fix a front vehicle wheel, and the shovel hopper both ends are separately fixed at four side
The right and left of shape frame, further includes first bevel gear, second bevel gear, first pulley, the second belt wheel and positioned at described turn
Crossbeam above moving axis, the crossbeam both ends are separately fixed at the right and left of the quadrilateral frame, the first bevel gear
The number of gears be more than the number of gears of the second bevel gear, the diameter of the first pulley is more than the diameter of second belt wheel；
The first bevel gear is fixed in the rotation axis, coaxially connected with the front vehicle wheel；
The first bevel gear is engaged with the second bevel gear；
The second bevel gear and the first pulley are coaxially connected, and are rotatably arranged on the crossbeam；
The first pulley is connected by belt with second belt wheel；
Second belt wheel is swept coaxially connected with described, and is rotatably arranged in the front of the quadrilateral frame；
The notch position for sweeping head and the shovel hopper abuts；
Runner assembly is formed by sweeping head, first bevel gear, second bevel gear, first pulley, the second belt wheel；
The hand-push type floor sweeper includes two runner assemblies, and two runner assemblies are in the rotation axis
Heart point symmetry is set；
Wherein, in two runner assemblies, two second bevel gears are between two first bevel gears.
Further, the rear wheel has two, is respectively arranged at the both ends of the bottom of frame back；
The rear wheel is universal wheel.
Further, the rear wheel includes three wheels, two wheels folder, wheel carrier and universal shaft, on the wheel
Equipped with the first connecting hole, the wheel is put in " product " font, and the wheel both sides are respectively provided with wheel folder, and the wheel passes through
First connecting hole and wheel folder axis connection, the wheel folder middle part are equipped with the second connecting hole, and the wheel folder passes through
Second connecting hole and the wheel carrier axis connection, the wheel carrier upper end is equipped with the 3rd connecting hole, described universal shaft one end
Rotatably it is connected with the wheel carrier by the 3rd connecting hole, the other end is connected with the vehicle frame.
Further, the wheel carrier is inverted " U " font, and the 3rd connecting hole is arranged on described " U " font car
The upper end of wheel carrier, the lower end of two sides in left and right of " U " the font wheel carrier respectively set a connecting shaft, and the wheel carrier passes through
The connecting shaft is connected with wheel folder.
Further, the shovel hopper is inwardly provided with inside the first inclined-plane and the second inclined-plane, institute from notch successively
State and sweep head and the first inclined-plane adjoining at the notch of the shovel hopper.
Further, the shovel hopper both sides are respectively equipped with a protrusion, are set respectively on described quadrilateral frame the right and left
There is the groove being adapted with the protrusion.
Further, the side of the vehicle frame is the frame of a quadrangle, and the upper end of the side is provided with handle.
The beneficial effects of the utility model are：Rotated by front vehicle wheel, so that drive the first bevel gear to rotate, institute
The number of gears for stating first bevel gear is more than the number of gears of the second bevel gear, and the first bevel gear drives the second cone tooth
Wheel accelerates to rotate, and the big first pulley of diameter drives the second small belt wheel of the diameter to accelerate to rotate by the belt, realizes
The multiple acceleration rotated, second belt wheel are swept coaxially connected, so as to sweep the quick rotation of head described in driving, are carried with described
Height collects the efficiency of rubbish, and simple in structure, and two runner assemblies are set on the rotation axis central point；Its
In, in two runner assemblies, two second bevel gears between two first bevel gears, two sweep head away from shovel hopper one
Side ecto-entad is opposite and turns, and it is good to clean effect.
Brief description of the drawings
Fig. 1 show the structure diagram of the utility model embodiment hand-push type floor sweeper；
It is the diagrammatic cross-section of the utility model embodiment hand-push type floor sweeper described in Fig. 2；
Fig. 3 show the enlarged drawing of details A in Fig. 2；
Fig. 4 show the structure diagram of the utility model embodiment hand-push type floor sweeper rear wheel；
Label declaration：1st, vehicle frame 2, crossbeam；3rd, rotation axis；4th, the second belt wheel；5th, head is swept；6th, first bevel gear；7th, second
Bevel gear；8th, front vehicle wheel；9th, belt；10th, rear wheel；11st, hopper is shoveled；12nd, first pulley；13rd, the first inclined-plane；14th, second is oblique
Face；15th, universal shaft；16th, wheel；
17th, wheel presss from both sides；18th, wheel carrier；19th, handle.
Embodiment
To describe the technology contents of the utility model, the objects and the effects in detail, below in conjunction with embodiment and match somebody with somebody
Attached drawing is closed to be explained.
The design of the utility model most critical is:Pass through first bevel gear, second bevel gear, first pulley, the second band
The multiple acceleration rotated is realized in the mutual cooperation of wheel.
Refer to shown in Fig. 1 to Fig. 4, a kind of hand-push type floor sweeper of the utility model, including vehicle frame 1, front vehicle wheel 8, after
Wheel 10, sweep first 5 and shovel hopper 11, and 1 bottom of vehicle frame is a quadrilateral frame, and the rear wheel 10 is arranged on the quadrangle
The rear end of frame, described quadrilateral frame the right and left have been rotatably fixed a rotation axis 3, and 3 both ends of rotation axis are each solid
A fixed front vehicle wheel 8,11 both ends of the shovel hopper are separately fixed at the right and left of the quadrilateral frame, further include the first cone tooth
Wheel 6, second bevel gear 7, first pulley 12, the second belt wheel 4 and the crossbeam 2 above the rotation axis 3, the crossbeam 2
Both ends are separately fixed at the right and left of the quadrilateral frame, and the number of gears of the first bevel gear 6 is more than the described second cone
The number of gears of gear 7, the diameter of the first pulley 12 are more than the diameter of second belt wheel 4；
The first bevel gear 6 is fixed in the rotation axis 3, coaxially connected with the front vehicle wheel 8；
The first bevel gear 6 is engaged with the second bevel gear 7；
The second bevel gear 7 and the first pulley 12 are coaxially connected, and are rotatably arranged on the crossbeam 2；
The first pulley 12 is connected by belt 9 with second belt wheel 4；
Second belt wheel 4 with it is described sweep it is first 5 coaxially connected, and before being rotatably arranged in the quadrilateral frame
Side；
It is described to sweep the first 5 notch position adjoinings with the shovel hopper 11；
Runner assembly is formed by sweeping first 5, first bevel gear 6, second bevel gear 7, first pulley 12, the second belt wheel 4；
The hand-push type floor sweeper includes two runner assemblies, and two runner assemblies are on the rotation axis 3
Central point is set；
Wherein, in two runner assemblies, two second bevel gears 7 are between two first bevel gears 6.
The operation principle of the utility model is as follows：In use, promoting sweeper from back to front, 8 turns of the front vehicle wheel is driven
It is dynamic, the circular motion of the first bevel gear 6 will be converted into by rotation axis 3, the number of gears of the first bevel gear 6 is big
In the number of gears of the second bevel gear 7, so as to drive the second bevel gear 7 to accelerate to rotate, realization once accelerates, and described the
The rotation of two bevel gears 7 drives 12 moved in coaxial of first pulley, and the big first pulley 12 of diameter is driven by belt 9
The accelerated motion of small second belt wheel 4 of diameter, realization are again speeded up, and second belt wheel 4 is swept first 5 and coaxial connected with described
Connect, so that first 5 quick rotation is swept described in driving, two are swept first 5 remote shovel hoppers 11 during sweeper moves one
Side ecto-entad is opposite and turns, and rubbish is swept into the shovel hopper 11.
As can be seen from the above description, the beneficial effects of the utility model are：Rotated by front vehicle wheel 8, so as to drive described
First bevel gear 6 rotates, and the number of gears of the first bevel gear 6 is more than the number of gears of the second bevel gear 7, first cone
Gear 6 drives the second bevel gear 7 to accelerate to rotate, and the number of gears of the first bevel gear 6 is more than the second bevel gear 7
The number of gears, the big first pulley 12 of diameter drive the second small belt wheel 4 of the diameter to accelerate to rotate, realize by the belt 9
The multiple acceleration rotated, second belt wheel 4 are swept first 5 coaxially connected, described quick turn of first 5 are swept so as to drive with described
It is dynamic, the efficiency for collecting rubbish is improved, and it is simple in structure, two runner assemblies are set on 3 central point of rotation axis
Put；Wherein, in two runner assemblies, for two second bevel gears 7 between two first bevel gears 6, two are swept first 5 away from shovel
The side ecto-entad of hopper 11 is opposite and turns, and it is good to clean effect.
Further, the rear wheel 10 has two, is respectively arranged at the both ends of the 1 bottom back of vehicle frame；
The rear wheel 10 is universal wheel.
Further, the rear wheel 10 includes three wheels, 16, two wheel folders 17, wheel carrier 18 and universal shaft 15,
The wheel 16 is equipped with the first connecting hole, and the wheel 16 is put in " product " font, and 16 both sides of wheel are respectively provided with a car
Wheel folder 17, the wheel 16 press from both sides 17 axis connections by first connecting hole and the wheel, and 17 middle part of wheel folder is equipped with
Second connecting hole, wheel folder 17 is by second connecting hole and 18 axis connection of wheel carrier, on the wheel carrier 18
End is equipped with the 3rd connecting hole, and described 15 one end of universal shaft is rotatably connected by the 3rd connecting hole with the wheel carrier 18,
The other end is connected with the vehicle frame 1.
As can be seen from the above description, using universal wheel as rear wheel 10, the rear wheel 10 includes three wheels 16, two
Wheel folder 17, wheel carrier 18 and universal shaft 15, it is convenient to be used on rugged road surface, can stair activity.
Further, the wheel carrier 18 is inverted " U " font, and the 3rd connecting hole is arranged on described " U " font
The upper end of wheel carrier 18, the lower end of two sides in left and right of " U " the font wheel carrier 18 respectively set a connecting shaft, the wheel
Frame 18 is connected by the connecting shaft with wheel folder 17.
Further, the shovel hopper 11 is inwardly provided with inside the first inclined-plane 13 and the second inclined-plane from notch successively
14, it is described sweep first 5 with it is described shovel hopper 11 notch at the first inclined-plane 13 abut.
As can be seen from the above description, sweep first 5 by setting to abut with the first inclined-plane 13 at the notch of the shovel hopper 11, just
Rubbish is got rid of into shovel hopper 11 well, and avoid rubbish and swept first 5 rotation again and throw away, the first inclined-plane 13 and the second inclined-plane 14 will
The rubbish is trapped in shovel hopper 11.
Further, 11 both sides of the shovel hopper are respectively equipped with a protrusion, distinguish on described quadrilateral frame the right and left
Equipped with the groove being adapted with the protrusion.
As can be seen from the above description, raised by being respectively equipped with one in 11 both sides of the shovel hopper, the quadrilateral frame is left
It is easy for installation that the groove being adapted with the protrusion is respectively equipped with right both sides, and the replacement side after shovel hopper 11 fills rubbish
Just.
Further, the side of the vehicle frame 1 is the frame of a quadrangle, and the upper end of the side is provided with handle 19.
As can be seen from the above description, by being the frame of a quadrangle in the side of the vehicle frame 1, the upper end of the side is set
Handle 19 is equipped with, it is easy to use.
Embodiment one
A kind of hand-push type floor sweeper, including vehicle frame 1, front vehicle wheel 8, rear wheel 10, sweep first 5 and shovel hopper 11, the vehicle frame 1
Bottom is a quadrilateral frame, and the rear wheel 10 is arranged on the rear end of the quadrilateral frame, described quadrilateral frame or so two
While being rotatably fixed a rotation axis 3,3 both ends of rotation axis are each to fix a front vehicle wheel 8,11 both ends of shovel hopper difference
The right and left of the quadrilateral frame is fixed on, further includes first bevel gear 6, second bevel gear 7, first pulley 12, second
Belt wheel 4 and the crossbeam 2 above the rotation axis 3,2 both ends of crossbeam are separately fixed at a left side for the quadrilateral frame
Right both sides, the number of gears of the first bevel gear 6 are more than the number of gears of the second bevel gear 7, the first pulley 12 it is straight
Footpath is more than the diameter of second belt wheel 4；The first bevel gear 6 is fixed in the rotation axis 3, same with the front vehicle wheel 8
Axis connection；The first bevel gear 6 is engaged with the second bevel gear 7；The second bevel gear 7 and the first pulley 12 are same
Axis connection, and be rotatably arranged on the crossbeam 2；The first pulley 12 is connected by belt 9 and second belt wheel 4
Connect；Second belt wheel 4 is swept first 5 coaxially connected with described, and is rotatably arranged in the front of the quadrilateral frame；
It is described to sweep the first 5 notch position adjoinings with the shovel hopper 11；
Runner assembly is formed by sweeping first 5, first bevel gear 6, second bevel gear 7, first pulley 12, the second belt wheel 4；
Wherein, in two runner assemblies, two second bevel gears 7 are between two first bevel gears 6；
The hand-push type floor sweeper includes two runner assemblies, and two runner assemblies are on the rotation axis 3
Central point is set；
The rear wheel 10 has two, is respectively arranged at the both ends of the 1 bottom back of vehicle frame；
The rear wheel 10 is universal wheel；
The rear wheel 10 includes three wheels, 16, two wheel folders 17, wheel carrier 18 and universal shaft 15, the wheel 16
The first connecting hole is equipped with, the wheel 16 is put in " product " font, and 16 both sides of wheel are respectively provided with wheel folder 17, described
Wheel 16 presss from both sides 17 axis connections by first connecting hole and the wheel, and 17 middle part of wheel folder is equipped with the second connecting hole,
By second connecting hole and 18 axis connection of wheel carrier, 18 upper end of wheel carrier is equipped with the 3rd and connects the wheel folder 17
Connect hole, described 15 one end of universal shaft is rotatably connected by the 3rd connecting hole with the wheel carrier 18, the other end with it is described
Vehicle frame 1 is connected；
The wheel carrier 18 is inverted " U " font, and the 3rd connecting hole is arranged on " U " the font wheel carrier 18
Upper end, the lower end of two sides in left and right of " U " the font wheel carrier 18 respectively set a connecting shaft, and the wheel carrier 18 passes through institute
Connecting shaft is stated to be connected with wheel folder 17；
The shovel hopper 11 is inwardly provided with inside the first inclined-plane 13 and the second inclined-plane 14 from notch successively, and first is oblique
It is described to sweep first 5 and the neighbour of the first inclined-plane 13 at the notch of the shovel hopper 11 at a distance of an interval between 13 and second inclined-plane 14 of face
Connect；
Shovel hopper 11 both sides be respectively equipped with it is one raised, be respectively equipped with described quadrilateral frame the right and left with it is described
The groove that protrusion is adapted；
The side of the vehicle frame 1 is the frame of a quadrangle, and the upper end of the side is provided with handle 19.
In conclusion a kind of hand-push type floor sweeper provided by the utility model, in use, by promoting front truck from back to front
Wheel 8 rotates, so as to drive the first bevel gear 6 to rotate, the number of gears of the first bevel gear 6 is more than the second bevel gear
7 number of gears, the first bevel gear 6 drive the second bevel gear 7 to accelerate to rotate, and the big first pulley 12 of diameter passes through institute
Stating belt 9 drives small the second belt wheel 4 of the diameter to accelerate to rotate, and realizes the multiple acceleration of rotation, second belt wheel 4 with
It is described sweep it is first 5 coaxially connected so that drive it is described sweep first 5 quick rotation, improve the efficiency for collecting rubbish, and simple in structure,
Two runner assemblies are set on 3 central point of rotation axis；Wherein, in two runner assemblies, two second cones
Gear 7 is swept the first 5 side ecto-entads away from shovel hopper 11 for two and is turned in opposite directions, clean between two first bevel gears 6
Effect is good, and sweep first 5 by setting abuts with the first inclined-plane 13 at the notch of the shovel hopper 11, rubbish is got rid of into shovel material
Groove 11, and avoid rubbish swept again it is first 5 rotation throw away, the rubbish is trapped in shovel by the first inclined-plane 13 and the second inclined-plane 14
It is raised by being respectively equipped with one in 11 both sides of the shovel hopper in hopper 11, set respectively on described quadrilateral frame the right and left
Have that the groove being adapted with the protrusion is easy for installation, and replace after shovel hopper 11 fills rubbish it is convenient.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalents made based on the specification and figures of the utility model, are directly or indirectly used in relevant technology neck
Domain, is equally included in the patent within the scope of the utility model.
Claims (7)
1. a kind of hand-push type floor sweeper, including vehicle frame, front vehicle wheel, rear wheel, head and shovel hopper are swept, the bottom of frame is one or four
Side shape frame, the rear wheel are arranged on the rear end of the quadrilateral frame, and described quadrilateral frame the right and left is rotationally solid
Surely there is a rotation axis, the rotation axis both ends are each to fix a front vehicle wheel, and the shovel hopper both ends are separately fixed at the quadrangle
The right and left of frame, it is characterised in that
Further include first bevel gear, second bevel gear, first pulley, the second belt wheel and the horizontal stroke above the rotation axis
Beam, the crossbeam both ends are separately fixed at the right and left of the quadrilateral frame, and the number of gears of the first bevel gear is more than
The number of gears of the second bevel gear, the diameter of the first pulley are more than the diameter of second belt wheel；
The first bevel gear is fixed in the rotation axis, coaxially connected with the front vehicle wheel；
The first bevel gear is engaged with the second bevel gear；
The second bevel gear and the first pulley are coaxially connected, and are rotatably arranged on the crossbeam；
The first pulley is connected by belt with second belt wheel；
Second belt wheel is swept coaxially connected with described, and is rotatably arranged in the front of the quadrilateral frame；
The notch position for sweeping head and the shovel hopper abuts；
Runner assembly is formed by sweeping head, first bevel gear, second bevel gear, first pulley, the second belt wheel；
The hand-push type floor sweeper includes two runner assemblies, and two runner assemblies are on the rotation axis central point
It is symmetrical arranged；
Wherein, in two runner assemblies, two second bevel gears are between two first bevel gears.
2. hand-push type floor sweeper according to claim 1, it is characterised in that
The rear wheel has two, is respectively arranged at the both ends of the bottom of frame back；
The rear wheel is universal wheel.
3. hand-push type floor sweeper according to claim 2, it is characterised in that
The rear wheel includes three wheels, two wheel folders, wheel carrier and universal shaft, the wheel and is equipped with the first connection
Hole, the wheel are put in " product " font, and the wheel both sides are respectively provided with wheel folder, and the wheel is connected by described first
Hole and wheel folder axis connection, the wheel folder middle part are equipped with the second connecting hole, and the wheel folder is connected by described second
Hole and the wheel carrier axis connection, the wheel carrier upper end are equipped with the 3rd connecting hole, and described universal shaft one end passes through the described 3rd
Connecting hole is rotatably connected with the wheel carrier, and the other end is connected with the vehicle frame.
4. hand-push type floor sweeper according to claim 3, it is characterised in that
The wheel carrier is inverted " U " font, and the 3rd connecting hole is arranged on the upper end of described " U " font wheel carrier, institute
State two sides in left and right of " U " font wheel carrier lower end respectively set a connecting shaft, the wheel carrier by the connecting shaft with
Wheel folder connection.
5. hand-push type floor sweeper according to claim 1, it is characterised in that
The shovel hopper is inwardly provided with inside the first inclined-plane and the second inclined-plane from notch successively, described to sweep head and the shovel
The first inclined-plane adjoining at the notch of hopper.
6. hand-push type floor sweeper according to claim 1, it is characterised in that
The shovel hopper both sides are respectively equipped with one raised, are respectively equipped with described quadrilateral frame the right and left and the raised phase
The groove of adaptation.
7. hand-push type floor sweeper according to claim 1, it is characterised in that
The side of the vehicle frame is the frame of a quadrangle, and the upper end of the side is provided with handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721311442.3U CN207244519U (en) | 2017-10-11 | 2017-10-11 | A kind of hand-push type floor sweeper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721311442.3U CN207244519U (en) | 2017-10-11 | 2017-10-11 | A kind of hand-push type floor sweeper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207244519U true CN207244519U (en) | 2018-04-17 |
Family
ID=61890991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721311442.3U Expired - Fee Related CN207244519U (en) | 2017-10-11 | 2017-10-11 | A kind of hand-push type floor sweeper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207244519U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202579A (en) * | 2018-08-28 | 2019-01-15 | 芜湖市黄山松工业地坪新材料有限公司 | A kind of ground polishes cleaner |
| CN110205973A (en) * | 2019-07-05 | 2019-09-06 | 中铁二院工程集团有限责任公司 | A kind of tooth socket clearing apparatus of cogwheel railway |
| CN110974094A (en) * | 2019-11-27 | 2020-04-10 | 徐州强雳日常用品制造有限公司 | Double-sided ground cleaning device |
-
2017
- 2017-10-11 CN CN201721311442.3U patent/CN207244519U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202579A (en) * | 2018-08-28 | 2019-01-15 | 芜湖市黄山松工业地坪新材料有限公司 | A kind of ground polishes cleaner |
| CN110205973A (en) * | 2019-07-05 | 2019-09-06 | 中铁二院工程集团有限责任公司 | A kind of tooth socket clearing apparatus of cogwheel railway |
| CN110974094A (en) * | 2019-11-27 | 2020-04-10 | 徐州强雳日常用品制造有限公司 | Double-sided ground cleaning device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20201011 |