CN203979113U - A kind of articulated mechanism of hinged gathering formula mosquito net frame - Google Patents
A kind of articulated mechanism of hinged gathering formula mosquito net frame Download PDFInfo
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- CN203979113U CN203979113U CN201420463716.0U CN201420463716U CN203979113U CN 203979113 U CN203979113 U CN 203979113U CN 201420463716 U CN201420463716 U CN 201420463716U CN 203979113 U CN203979113 U CN 203979113U
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- mosquito net
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Abstract
The articulated mechanism that the utility model discloses a kind of hinged gathering formula mosquito net frame, is characterized in that, it comprises the hinge-rod one of the articulated joint that is respectively arranged with concavo-convex cooperation and hinge-rod two and through the hinge axis of two articulated joints of concavo-convex cooperation; The hinged first joint one connecting with hinge-rod one end and the anterior rotational support portion one corresponding with hinge axis that be provided with that comprises rear portion of hinge-rod one, the side certain distance of hinge-rod one is protruded in rotational support portion one; The articulated joint two of hinge-rod two comprises the both sides positioning baseplate two being connected with hinge-rod two, both sides positioning baseplate two connects and composes the U-shaped locating slot corresponding with articulated joint one with the end face of hinge-rod two, the end movable top press fit of the end face of both sides positioning baseplate two and hinge-rod one, the angle that the hinge-rod one that is hinged and hinge-rod two are launched is 0-180 degree.The utility model is simple in structure, easy for installation.
Description
Technical field
The utility model relates to a kind of mosquito net technical field, relates to more specifically a kind of articulated mechanism of hinged gathering formula mosquito net frame.
Background technique
Mosquito net is a kind of tent of avoiding mosquito bite, conventionally hangs over and on bedstead, bed is surrounded to completely cut off mosquito.Mosquito net mostly is netted material, it is windproof that use mosquito net can be kept away mosquito, and the dust also descending slowly and lightly in adsorbable air, because mosquito net material is excessively soft, need to be fixed by mosquito net frame, but the quadra that traditional mosquito net frame is generally all comprised of four vertical rods and cross bar, although sound construction, but dismounting is inconvenient, be difficult for reclaiming receipts whole, the resource that takes up room, affects attractive in appearance.Therefore, can reclaim more in recent years the whole mosquito net of receipts is loved by the people.If China Patent Publication No. is CN203597684U, a kind of hinged drawn-back type mosquito net frame, comprise a pair of montant of vertical setting and the horizontally disposed a pair of cross bar being connected with described a pair of montant, each root cross bar forms by a connecting rod and a butt bar, one end of connecting rod is hinged by conversion adapter with a corresponding montant, the other end of connecting rod is hinged with end bar, between described two conversion adapters, be vertically arranged with the inner vertical pole that supports, described two butt bars are vertically arranged with split type dismountable outer end and support vertical pole between the termination away from connecting rod, two connecting rods can inwardly intersect gathering by conversion adapter, connecting rod after gathering is pressed close to described the inner and is supported vertical pole, two butt bars also can outwards be opened, end bar after opening is pressed close to connecting rod, thereby realize the gathering of mosquito net frame.This mosquito net frame is simple in structure, easy to use, and can freely fold, and realizes the full gathering of mosquito net frame.But the hinging structure that shortcoming is connecting rod and end bar is assembled in upper and lower superimposed mode by upper articulated joint and lower articulated joint two-part, upper articulated joint has connection-peg to insert in the hollow cylindrical body of lower articulated joint, and rotate relative to lower articulated joint, because upper articulated joint is connected with end bar, end bar also connects front cross bar, therefore, the moment of the front half part of mosquito net frame all concentrates between the connection-peg of articulated joint and the hollow cylindrical body of lower articulated joint, and, due to upper, between lower articulated joint, on above-below direction, be there is no good location, therefore, use after a period of time, on, the combination meeting of lower articulated joint occurs loosening, cause easily connecting end bar and front cross bar sagging, not only affect outward appearance, and it is smooth to cause mosquito net to stretch with gathering.
Summary of the invention
The purpose of this utility model is exactly provide in order to solve the deficiency of prior art a kind of simple in structure, easy to install, the articulated mechanism of constitutionally stable hinged gathering formula mosquito net frame.
The utility model is to adopt following technical solution to realize above-mentioned purpose: a kind of articulated mechanism of hinged gathering formula mosquito net frame, it is characterized in that, it comprises the hinge-rod one of the articulated joint that is respectively arranged with concavo-convex cooperation and hinge-rod two and through the hinge axis of two articulated joints of concavo-convex cooperation;
The hinged first joint one connecting with hinge-rod one end and the anterior rotational support portion one corresponding with hinge axis that be provided with that comprises rear portion of hinge-rod one, the side certain distance of hinge-rod one is protruded in rotational support portion one;
The articulated joint two of hinge-rod two comprises the both sides positioning baseplate two being connected with hinge-rod two, both sides positioning baseplate two connects and composes the U-shaped locating slot corresponding with articulated joint one with the end face of hinge-rod two, the end movable top press fit of the end face of both sides positioning baseplate two and hinge-rod one, the angle that the hinge-rod one that is hinged and hinge-rod two are launched is 0-180 degree.
As further illustrating of such scheme, described positioning baseplate two comprises the joint two being connected with hinge-rod biend at rear portion, vertical clamping plate portion two of protruding the side certain distance of hinge-rod two; Rotational support portion one is arranged between both sides clamping plate portion two.
The side end face that hinge-rod one lateral parts is protruded in described rotational support portion one is arc surface, and the side end face that the part of hinge-rod two side faces is protruded in clamping plate portion two is arc surface.
Described hinged first joint one is provided with into the turnover face of 90 degree turnovers, and this turnover face consists of the end face two that connects the side end face one of hinge-rod one side and the arc surface of connection of rotating supporting portion one; The joint two of positioning baseplate two is provided with the end face four that connects the side end face three of hinge-rod two side faces and the arc surface of connecting cleat portion two; When hinge-rod one launches with hinge-rod two and becomes 180 degree angle, Yi He side end face three, side end face is in the same plane, and end face two and end face four are parallel to each other; When hinge-rod one and hinge-rod two are launched into 90 degree angle, the arc surface of the arc surface of rotational support portion one and clamping plate portion two is positioned in same cambered surface, and Yi He side end face, side end face three is mutually vertical, and end face two is mutually vertical with end face four; When hinge-rod one and hinge-rod two are collapsed into 0 degree angle, Yi He side end face, side end face three is parallel to each other; End face two and end face four are in the same plane.
In the turnover face of the one-tenth 90 degree turnover of described joint one, the end face two of the arc surface of connection of rotating supporting portion one is when hinge-rod one and hinge-rod two are launched into 180 degree angle, and top is pressed on the end of hinge-rod two.
Described rotational support portion one and clamping plate portion two are all set to the inside and outside ring supporting structure corresponding with hinge axis, hinge axis is movably arranged in the intermediate hole of interior ring, between the interior ring of the inside and outside ring supporting structure of rotational support portion one and/or clamping plate portion two and outer ring, be connected with some stiffening ribs, for strengthening the support of internal ring, and in conjunction with the positioning action of interior ring, can prevent hinge axis bending deflection.
Described rotational support portion one and/or clamping plate portion two are set to the dunnage corresponding with hinge axis one.
Described hinge axis is comprised of screw bolt and nut, and at least one side clamping plate portion two of articulated joint two, the end in the hole corresponding with hinge axis is set to counterbore, for set screw nut.
Between described inside and outside ring, be provided with annular groove, in annular groove, be provided with the connecting bottom board that connects interior ring and outer ring.
The quantity of described stiffening rib is more than three or three, and stiffening rib is arranged on connecting bottom board surface, and two ends connect respectively at inner and outer rings.
Described stiffening rib is the wedge shape rib that one end is large, one end is little, ring in the small end of wedge shape rib connects, and large end connects outer shroud.
Described hinge-rod one is round bar, and the end of hinge-rod one arranges the end plate one that diameter is greater than its external diameter, the hinged first surface that is vertically set on end plate one.
Described joint one is a plate, and the bi-side of connecting plate are respectively arranged with deep gouge.
Described hinge-rod two is round bar, and the end of hinge-rod two is provided with length and/or is wider than the end plate two of its external diameter, and both sides positioning baseplate two is divided into the both sides of the edge of end plate two, and vertical with end plate two; The edge of end plate two is connected with the side of positioning baseplate two and forms step.
The pipe fitting that described hinge-rod one and hinge-rod two are hollow, the rear direction along this pipe fitting from the mouth of pipe to pipe, its tube wall is thickeied gradually, strengthens its counter-bending, break resistance.
The beneficial effect that the utility model adopts above-mentioned technical solution to reach is:
1, the hinge structure that the utility model adopts the hinge-rod one of the articulated joint be provided with concavo-convex cooperation and hinge-rod two and forms through the hinge axis of two articulated joints of concavo-convex cooperation, hinge-rod one and hinge-rod two can arrange at grade, due to the articulated joint of hinge-rod two, to have both sides positioning baseplate to carry out the articulated joint of hinge-rod one spacing up and down, the problem that the limited middle hinge that has solved existing hinge type mosquito net frame as stated in the Background Art exists, structure is more stable.
2, rotational support portion one of the present utility model and clamping plate portion two are all set to the inside and outside ring supporting structure corresponding with hinge axis, supporting by interior ring to hinge axis, the connection location of stiffening rib and the internal ring of connecting plate, make the articulated joint of hinge-rod one and the articulated joint of hinge-rod two can reach stable hinged cooperation, have the rack of mosquito net rod member that enough ability support and connection are general and the phenomenons such as sagging or de-hinge can not occur.
Accompanying drawing explanation
Fig. 1 is the mosquito net structure schematic diagram of practical articulated mechanism of the present utility model;
Fig. 2 is the mosquito net structure schematic diagram of practical articulated mechanism of the present utility model;
Fig. 3 is that the mosquito net frame of Fig. 2 partly draws structural representation in;
Fig. 4 is that the mosquito net frame of Fig. 2 turns over structural representation under front cross bar while drawing in completely;
Fig. 5 is that the mosquito net frame of Fig. 2 turns over structural representation on front cross bar while drawing in completely;
Fig. 6 is articulated link mechanism structural representation of the present utility model;
Fig. 7 is the broken away view of Fig. 6;
Fig. 8 is articulated link mechanism structural representation of the present utility model;
Fig. 9 is the broken away view of Fig. 8;
Figure 10 is the another kind of decomposition texture schematic diagram of Fig. 8;
Figure 11 is structural representation of the present utility model;
Figure 12 is the decomposition texture schematic diagram of Figure 11.
Description of reference numerals: 1, mosquito net 2, account top frame 2-1, cantilever lever 2-11, flexible rod 2-12, fixing rod 2-13, articulated link mechanism one 2-14, articulated link mechanism two 2-2, front cross bar 3, supporting and positioning mechanism 4, rotational coupling mechanism 5, support rail 6, inside and outside ring supporting structure; 6-1, interior ring 6-2, outer ring 6-3, stiffening rib 6-4, annular groove 6-5, connecting bottom board; 7, counterbore;
2-131, hinge-rod one 2-1311, joint one 2-13111, side end face one 2-13112, end face two 2-1312, one 2-1313 of rotational support portion, end plate one 2-132, hinge-rod two 2-1321, positioning baseplate two 2-13211, joint two 2-132111, side end face three 2-132112, end face four 2-13212, two 2-1322 of clamping plate portion, end plate two.
Embodiment
Below in conjunction with specific embodiment, specific embodiments of the present utility model is described in further detail.
Fig. 1-Fig. 5 is the mosquito net that uses articulated mechanism of the present utility model, and it comprises mosquito net 1, account top frame 2 and the supporting and positioning mechanism 3 corresponding with account top frame, and supporting and positioning mechanism 3 can adopt the form of wall built-up seat or vertical rod.Mosquito net 1 is arranged on account top frame 2, account top frame 2 comprises arranged on left and right sides cantilever lever 2-1 and is connected in the front cross bar 2-2 between the cantilever lever of both sides, between described cantilever lever 2-1 and supporting and positioning mechanism 3, be provided with rotational coupling mechanism 4, cantilever lever 2-1 by flexible rod 2-11, non-retractable fixing rod 2-12 and be connected in flexible rod and fixing rod between articulated link mechanism one 2-13 form, articulated link mechanism one 2-13 is hinge structure of the present utility model.Front cross bar 2-2 and cantilever lever 2-1 two 2-14 of mechanism that are connected through the hinge are connected, between the cantilever lever 2-1 of both sides, be connected with dismountable support rail 5, one 2-13 of the mechanism gathering that can bend inwards that is connected through the hinge of the flexible rod of both sides cantilever lever and fixing rod, flexible rod 2-11 after gathering presses close to fixing rod 2-12, front cross bar 2-2 utilizes can be around the characteristic of axial-rotation between the adjacent two joint connecting rods that form flexible rod 2-11, can under external force, realize the upset up or down of front cross bar, thereby realize the object of drawing in completely of mosquito net frame.
As shown in Fig. 6-Fig. 9, be articulated mechanism 2-13 of the present utility model, it comprises hinge-rod one 2-131 of the articulated joint that is respectively arranged with concavo-convex cooperation and hinge-rod two 2-132 and through the hinge axis of two articulated joints of concavo-convex cooperation; Hinged first joint one 2-1311 connecting with hinge-rod one end and anterior rotational support portion one 2-1312 corresponding with hinge axis that be provided with that comprises rear portion of hinge-rod one 2-131, one 2-1312 of rotational support portion protrudes the side certain distance of hinge-rod one 2-131; The articulated joint two of hinge-rod two 2-132 comprises both sides positioning baseplate two 2-1321 that are connected with hinge-rod two, both sides positioning baseplate two connects and composes the U-shaped locating slot corresponding with articulated joint one with the end face of hinge-rod two, the end movable top press fit of the end face of both sides positioning baseplate two and hinge-rod one, the angle that the hinge-rod one that is hinged and hinge-rod two are launched is 0-180 degree.
Described positioning baseplate two 2-1321 comprise joint two 2-13211 that are connected with hinge-rod biend at rear portion, vertical two 2-13212 of clamping plate portion that protrude the side certain distance of hinge-rod two; One 2-1312 of rotational support portion is arranged between both sides clamping plate portion two.
The side end face that described rotational support one 2-1312 of portion protrudes hinge-rod one lateral parts is arc surface, and the side end face that two 2-13212 of clamping plate portion protrude the part of hinge-rod two side faces is arc surface.Hinged first joint one 2-1311 is provided with into the turnover face of 90 degree turnovers, and this turnover face consists of end face two 2-13112 that connect side end face one 2-13111 of hinge-rod one side and the arc surface of connection of rotating supporting portion one; Joint two 2-13211 of positioning baseplate two are provided with end face four 2-132112 that connect side end face three 2-132111 of hinge-rod two side faces and the arc surface of connecting cleat portion two; When hinge-rod one launches with hinge-rod two and becomes 180 degree angle, Yi He side end face three, side end face is in the same plane, and end face two and end face four are parallel to each other; When hinge-rod one and hinge-rod two are launched into 90 degree angle, the arc surface of the arc surface of rotational support portion one and clamping plate portion two is positioned in same cambered surface, and Yi He side end face, side end face three is mutually vertical, and end face two is mutually vertical with end face four; When hinge-rod one and hinge-rod two are collapsed into 0 degree angle, Yi He side end face, side end face three is parallel to each other; End face two and end face four are in the same plane.In the turnover face of the one-tenth 90 degree turnover of described joint one, the end face two of the arc surface of connection of rotating supporting portion one is when hinge-rod one and hinge-rod two are launched into 90 degree angle, and top is pressed on the end of hinge-rod two.
Described rotational support one 2-1312 of portion and two 2-13212 of clamping plate portion are all set to the inside and outside ring supporting structure 6 corresponding with hinge axis, hinge axis is movably arranged in the intermediate hole of interior ring 6-1 of inside and outside ring supporting structure, between the interior ring 6-1 of the inside and outside ring supporting structure 6 of rotational support portion one and/or clamping plate portion two and outer ring 6-2, be connected with some stiffening rib 6-3, for strengthening the support of internal ring, and in conjunction with the positioning action of interior ring, can prevent hinge axis bending deflection.Between inside and outside ring, be provided with annular groove 6-4, in annular groove, be provided with the connecting bottom board 6-5 that connects interior ring and outer ring.The quantity of stiffening rib is 4, and stiffening rib is arranged on connecting bottom board surface, and two ends connect respectively at inner and outer rings.Stiffening rib is the wedge shape rib that one end is large, one end is little, ring in the small end of wedge shape rib connects, and large end connects outer shroud.
Or described rotational support one 2-1312 of portion and/or two 2-13212 of clamping plate portion are set to the flat support plate corresponding with hinge axis, as Figure 10, one 2-1312 of rotational support portion is arranged to flat support plate, and two 2-13212 of clamping plate portion are arranged to annular supporting structure.
As shown in Figure 11 and Figure 12, for the convenience of installing, the hinge axis of the present embodiment comprises screw bolt and nut two-part, the end of the intermediate hole of the upper interior ring 6-1 corresponding with hinge axis of one two 2-13212 of side clamping plate portion of articulated joint two is set to counterbore 7, the shape of counterbore and size match with nut, for set screw nut is installed.
In the present embodiment, hinge-rod one 2-131 is round bar, and the end of hinge-rod one 2-131 arranges end plate one 2-1313 that diameter is greater than its external diameter, the hinged first surface that is vertically set on end plate one 2-1313.Joint one 2-1311 is a plate, and the bi-side of connecting plate are respectively arranged with deep gouge.Hinge-rod two 2-132 are round bar, the end of hinge-rod two is provided with length and/or is wider than end plate two 2-1322 of its external diameter, both sides positioning baseplate two is divided into the both sides of the edge of end plate two, and vertical with end plate two, the edge of end plate two is connected with the side of positioning baseplate two and forms step, and the side of positioning baseplate two is the arc surface of described clamping plate portion two namely.The pipe fitting that described hinge-rod one and hinge-rod two are hollow, the rear direction along this pipe fitting from the mouth of pipe to pipe, its tube wall is thickeied gradually, strengthens its counter-bending, break resistance.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, do not departing under the prerequisite of the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (10)
1. an articulated mechanism for hinged gathering formula mosquito net frame, is characterized in that, it comprises the hinge-rod one of the articulated joint that is respectively arranged with concavo-convex cooperation and hinge-rod two and through the hinge axis of two articulated joints of concavo-convex cooperation;
The hinged first joint one connecting with hinge-rod one end and the anterior rotational support portion one corresponding with hinge axis that be provided with that comprises rear portion of hinge-rod one, the side certain distance of hinge-rod one is protruded in rotational support portion one;
The articulated joint two of hinge-rod two comprises the both sides positioning baseplate two being connected with hinge-rod two, both sides positioning baseplate two connects and composes the U-shaped locating slot corresponding with articulated joint one with the end face of hinge-rod two, the end movable top press fit of the end face of both sides positioning baseplate two and hinge-rod one, the angle that the hinge-rod one that is hinged and hinge-rod two are launched is 0-180 degree.
2. the articulated mechanism of a kind of hinged gathering formula mosquito net frame according to claim 1, it is characterized in that, described positioning baseplate two comprises the joint two being connected with hinge-rod biend at rear portion, vertical clamping plate portion two of protruding the side certain distance of hinge-rod two; Rotational support portion one is arranged between both sides clamping plate portion two; The side end face that hinge-rod one lateral parts is protruded in described rotational support portion one is arc surface, and the side end face that the part of hinge-rod two side faces is protruded in clamping plate portion two is arc surface.
3. the articulated mechanism of a kind of hinged gathering formula mosquito net frame according to claim 2, it is characterized in that, described hinged first joint one is provided with into the turnover face of 90 degree turnovers, and this turnover face consists of the end face two that connects the side end face one of hinge-rod one side and the arc surface of connection of rotating supporting portion one; The joint two of positioning baseplate two is provided with the end face four that connects the side end face three of hinge-rod two side faces and the arc surface of connecting cleat portion two; When hinge-rod one launches with hinge-rod two and becomes 180 degree angle, Yi He side end face three, side end face is in the same plane, and end face two and end face four are parallel to each other; When hinge-rod one and hinge-rod two are launched into 90 degree angle, the arc surface of the arc surface of rotational support portion one and clamping plate portion two is positioned in same cambered surface, and Yi He side end face, side end face three is mutually vertical, and end face two is mutually vertical with end face four; When hinge-rod one and hinge-rod two are collapsed into 0 degree angle, Yi He side end face, side end face three is parallel to each other; End face two and end face four are in the same plane.
4. the articulated mechanism of a kind of hinged gathering formula mosquito net frame according to claim 3, it is characterized in that, in the turnover face of the one-tenth 90 degree turnovers of described joint one, the end face two of the arc surface of connection of rotating supporting portion one is when hinge-rod one and hinge-rod two are launched into 90 degree angle, and top is pressed on the end of hinge-rod two.
5. the articulated mechanism of a kind of hinged gathering formula mosquito net frame according to claim 2, it is characterized in that, described rotational support portion one and clamping plate portion two are all set to the inside and outside ring supporting structure corresponding with hinge axis, hinge axis is movably arranged in the intermediate hole of interior ring, between the interior ring of the inside and outside ring supporting structure of rotational support portion one and/or clamping plate portion two and outer ring, is connected with some stiffening ribs.
6. the articulated mechanism of a kind of hinged gathering formula mosquito net frame according to claim 5, is characterized in that, between described inside and outside ring, is provided with annular groove, is provided with the connecting bottom board that connects interior ring and outer ring in annular groove.
7. the articulated mechanism of a kind of hinged gathering formula mosquito net frame according to claim 6, is characterized in that, the quantity of described stiffening rib is more than three or three, and stiffening rib is arranged on connecting bottom board surface, and two ends are connected with inner and outer rings respectively.
8. the articulated mechanism of a kind of hinged gathering formula mosquito net frame according to claim 6, is characterized in that, described stiffening rib is the wedge shape rib that one end is large, one end is little, ring in the small end of wedge shape rib connects, and large end connects outer shroud.
9. the articulated mechanism of a kind of hinged gathering formula mosquito net frame according to claim 6, it is characterized in that, described hinge axis is comprised of screw bolt and nut, and at least one side clamping plate portion two of articulated joint two, the end in the hole corresponding with hinge axis is set to counterbore, for set screw nut.
10. the articulated mechanism of a kind of hinged gathering formula mosquito net frame according to claim 2, is characterized in that, described rotational support portion one and/or clamping plate portion two are set to the dunnage corresponding with hinge axis one, have the hole corresponding with hinge axis one in dunnage;
Described hinge-rod one is round bar, and the end of hinge-rod one arranges the end plate one that diameter is greater than its external diameter, the hinged first surface that is vertically set on end plate one.
Described joint one is a plate, and the bi-side of connecting plate are respectively arranged with deep gouge;
Described hinge-rod two is round bar, and the end of hinge-rod two is provided with length and/or is wider than the end plate two of its external diameter, and both sides positioning baseplate two is divided into the both sides of the edge of end plate two, and vertical with end plate two; The edge of end plate two is connected with the side of positioning baseplate two and forms step;
Described hinge-rod one and/pipe fitting that hinge-rod two is hollow, the rear direction along this pipe fitting from the mouth of pipe to pipe, its tube wall is thickeied gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463716.0U CN203979113U (en) | 2014-08-16 | 2014-08-16 | A kind of articulated mechanism of hinged gathering formula mosquito net frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463716.0U CN203979113U (en) | 2014-08-16 | 2014-08-16 | A kind of articulated mechanism of hinged gathering formula mosquito net frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203979113U true CN203979113U (en) | 2014-12-03 |
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ID=51976563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420463716.0U Expired - Fee Related CN203979113U (en) | 2014-08-16 | 2014-08-16 | A kind of articulated mechanism of hinged gathering formula mosquito net frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203979113U (en) |
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2014
- 2014-08-16 CN CN201420463716.0U patent/CN203979113U/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20160816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |