CN102039743B - Clamping ring metal piece - Google Patents
Clamping ring metal piece Download PDFInfo
- Publication number
- CN102039743B CN102039743B CN200910207370.1A CN200910207370A CN102039743B CN 102039743 B CN102039743 B CN 102039743B CN 200910207370 A CN200910207370 A CN 200910207370A CN 102039743 B CN102039743 B CN 102039743B
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- frame plate
- ring
- semi
- clamping ring
- clamp ring
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Abstract
The invention discloses a clamping ring metal piece with twist lock type clamping rings. Each clamping ring comprises a pair of semi-rings, and when the clamping ring is needed to be closed, the tail end of each semi-ring is interlocked with that of the other semi-ring so as to close a corresponding clamping ring. A pair of frame plates is mutually parallel and is arranged below a cover of the metal piece along the length direction of the metal piece; and the other tail end of each semi-ring is connected to a corresponding frame plate, so that the movement of one frame plate relative to the other frame plate can influence the opening of the clamping ring. A plate handle for a binder clamp user to operate can move one frame plate relative to the other fixed frame plate. The frame plate longitudinally moves along the metal piece, and the interlocked ends of the semi-rings are separated so as to open the clamping ring. Two ends of a spring are fixed on opposite side walls of the bottom surface of the cover positioned below the frame plates respectively, and once the interlocked ends of the semi-rings are separated, the spring applies a pivoting force on the frame plates so as to pivot the frame plates in the opening direction of the clamping ring.
Description
Technical field
The present invention relates to a kind of clamping ring metal piece for loose-leaf binder, refer in particular to a kind of modified twistlock formula clamping ring metal piece that is easy to open but can arbitrarily open when it drops, collides or is subject to other External Force Actings.
Background technology
United States Patent (USP) the 5th, discloses a kind of " twistlock " (twist-lok) loose-leaf binder clamping ring metal piece of metalwork that is conventionally referred to as for 660, No. 490.The advantage of the type metalwork is to be easy to open, user applies finger pressure on two semi-rings of clamp ring--conventionally in the proximity of the end separately interlocking for closed metalwork of semi-ring described in two, and then turn or twisting finger and by the end of semi-ring separately.The opposite end of semi-ring is affixed with the thin slice being arranged side by side under the cover cap of metalwork.On thin slice, be formed with the sections (swedge) with this thin slice inclination certain angle, the torsion of the upper end of semi-ring causes thin slice that enough distortions occur and produces centering knuckle joint, and makes clamp ring still can stay open state after finger pressure is removed.
The existing problem of existing " twistlock " metalwork is that the metalwork of this type is easily opened when its set loose-leaf binder surprisingly drops.If loose-leaf binder drops or touches off from people's hand from desktop, related personnel tends to cause one or more clamp ring to be flicked and opens loose-leaf binder, so can only fetch loose-leaf binder, again closed clamp ring, and earnestly hope the file page being scattered and do not have any loss.
Recently, people have made many effort for improving the structure of this type of metalwork, as, referring to the patent application of No. 2008/0089736th, U.S..Yet, still have and need to the metalwork of this type be done further and be improved, to guarantee that twistlock clamp ring still can keep closing state when being subject to opening active force unexpectedly.
Summary of the invention
The present invention discloses a kind of clamping ring metal piece with twistlock formula clamp ring, length direction along this metalwork is intervally distributed with a plurality of twistlock formula clamp rings, each clamp ring includes a pair of semi-ring, when needs are closed clamp ring, the end interlocking of the end of each semi-ring and another semi-ring correspondingly, thereby closed corresponding clamp ring.A pair of frame plate parallel to each other is along the length direction of described metalwork and extend setting, and another end of each semi-ring of clamp ring is connected in corresponding frame plate, so that wherein a frame plate can affect the unlatching of clamp ring with respect to the pivotable of another frame plate.The frame plate that wherein a frame plate can not vertically move with respect to another and vertically moving.Described lock ring metalwork also includes a cover cap that above-mentioned frame plate is installed under it.One trigger piece is arranged at one end of described lock ring metalwork, and pulling this trigger piece can be with respect to another frame plate and frame plate movably described in mobile, thereby by the end of described semi-ring interlocking separately.The bottom surface of described cover cap is provided with lower than described frame plate place the spring that its corresponding end is individually fixed in described cover cap opposing sidewalls, described spring can apply active force at the end of described semi-ring interlocking on described frame plate after separately, to force described frame plate to open direction pivotable towards described clamp ring.
In one embodiment of the invention, each frame plate is respectively provided with a tab that is connected in spring corresponding to each spring, so that described spring applies the active force of the described clamp ring of a unlatching on described frame plate.
In the second embodiment of the present invention, described spring is the ring spring being surrounded between described tab, once the interlocking end of described clamp ring is by separately, described spring puts on active force in described frame plate by the position that forces described frame plate to be opened towards clamp ring.
The advantage of this clamping ring metal piece structure is, even if loose-leaf binder drops or touches off, therefore clamp ring can by mistake not opened yet.
Importantly, another feature of clamping ring metal piece of the present invention is when described clamp ring is opened, and can pin movably frame plate.This purpose coordinates one to be formed at the notch on another parts in above-mentioned two parts and to realize by using a formation or being fixed on tongue piece on described removable frame plate or becket cover cap.When opening described clamp ring because of the pivotable of the described frame plate vertically moving, described tongue piece install in described notch and stop described removable frame plate further activity until described clamp ring substantially closed.
A feature of the present invention is to provide convenience for opening clamping ring metal piece, but then, when described twistlock formula clamp ring is closed, clamping ring metal piece can apply enough active forces on described clamp ring so that it is held in closure state.
About other object and feature, wherein part is apparently, and part will below be illustrated.
Accompanying drawing explanation
Object of the present invention is embodied by the elaboration of illustrative embodiment as shown in drawings, and accompanying drawing forms the part of this description.
Fig. 1 is the perspective view with the loose-leaf binder of lock ring metalwork of the present invention;
Fig. 2 is the perspective view of the clamping ring metal piece of clamp ring in closure, locked position;
Fig. 3 is the perspective view of the clamp ring of Fig. 2 in open mode;
Fig. 4 is the proper view of the clamping ring metal piece of clamp ring in closure state;
Fig. 5 is the side front view of the clamping ring metal piece of clamp ring in closure state;
Fig. 6 is the top view of the clamping ring metal piece of clamp ring in closure state;
Fig. 7 is the top view of the clamping ring metal piece of clamp ring in open mode;
Fig. 8 is the perspective view of the bottom surface of the clamping ring metal piece of clamp ring in closure state;
Fig. 9 A is the partial bottom view of one end that is provided with trigger piece of the clamping ring metal piece of clamp ring in open mode, and Fig. 9 B is the partial bottom view of the other end of the clamping ring metal piece of clamp ring in open mode;
Figure 10 is the overall upward view of the clamping ring metal piece of clamp ring in open mode;
Figure 11 is the upward view of the clamp ring of the second embodiment clamping ring metal piece in open mode;
Figure 12 is the partial plan layout of clamping ring metal piece, and when clamp ring is opened, it illustrates the skew of corresponding half interannular;
Figure 13 is the partial plan layout of clamping ring metal piece, and it shows the tongue piece to downward-extension that is formed at cover cap top;
Figure 14 is the partial plan layout of the bottom surface of clamping ring metal piece, its show the described tongue piece to downward-extension through one be formed at notch in described frame plate and the projection that protrudes.
Figure 15 is the fragmentary, perspective view of the bottom surface of clamping ring metal piece cover cap, and it shows a tongue piece when described clamp ring is opened and from described cover cap bottom surface, extends and pin the movable state of a removable frame plate.
Figure 16 illustrates for installing the fragmentary, perspective view of removable frame plate of the respective slot of described tongue piece; And,
Figure 17 is the fragmentary, perspective view of clamping ring metal piece cover cap, and it illustrates a tongue piece when described clamp ring is opened and from described cover cap bottom surface, extends and pin the movable state of a removable frame plate through the notch of described cover cap.
In accompanying drawing, identical Reference numeral represents identical part.
The specific embodiment
Following detailed description is to set forth and non-limiting the present invention by way of example.The description of this explanation is enough to clear and can allows those skilled in the art be implemented and apply, and, some embodiment of the present invention, modification, work-around solution, alternative scheme and application scheme have also been set forth in this explanation, comprise think at present for implementing most preferred embodiment of the present invention.In addition, should be appreciated that ground, the present invention is not defined in as application as described in the following describes or concrete structure shown in the drawings and parts arrangement relation.The present invention can adopt other embodiment and be implemented by variety of way.Should also be appreciated that ground, the word that this description is used and term only play the object of explanation, and should not be considered to the use of restriction.
Secondly first, the present invention can make people more easily open " twistlock " metalwork, and, the present invention can prevent that clamp ring is because of as above former thereby by mistake or unexpectedly opened simultaneously effectively.
Shown in accompanying drawing, clamping ring metal piece 10 disclosed in this invention is installed on the S of the spine place of a loose-leaf binder B, for preserving perforation paper or analog.It will be understood by those skilled in the art that described clamping ring metal piece 10 can adopt other modes and be installed on dissimilar loose-leaf binder.Clamping ring metal piece 10 is one " twistlock " metalwork, and it has a plurality of common clamp rings that represent with Reference numeral 12,14,16.Certainly, more or less clamp ring is set on clamping ring metal piece, does not all deviate from scope of the present invention.Each is comprised of each clamp ring two semi-ring 12a-12b, 14a-14b, 16a-16b.Ground well known in the art, the outer end of twistlock formula clamp ring forms certain shape, so that it can interlock when clamp ring is closed, this is able to best embodiment in accompanying drawings such as Fig. 6, Fig. 8 and Figure 13.
As shown in Fig. 8～11, one end 12c, 12d, 14c, 14d and the 16c of each semi-ring, 16d are fixed in frame plate 18,20, and described frame plate is roughly to wait the rectangle thin plate being set parallel to each other of being longer than described annular metalwork.One cover cap 22 is installed on described frame plate, and makes described frame plate be arranged at the below of described cover cap.Described cover cap is formed with opening 24a, 24b, for the top of described semi-ring, passes and protrudes from described cover cap.With reference to shown in Figure 10 and hereinafter described, described opening 24b is wider than described opening 24a.Importantly, different from other clamping ring metal pieces, cover cap 22 adopts the preparation of conventional cover material.Yet, for the manufacture of the material of cover cap 22, do not there is the crimpness that is similar to spring of traditional clamping ring metal piece cover cap, that is to say, described cover cap does not possess enough elasticity to serve as the spring that described frame plate 18,20 is applied to active force.
One end of clamping ring metal piece 10 is provided with a plate handle 26, and it is connected in frame plate 18,20 and opens and closes loose-leaf binder B for user.Thus, described plate handle device includes a wind spring 27 and a crow bar 28, this crow bar 28 be connected in described frame plate 20 and described in can push-and-pull frame plate 20 with respect to described cover cap 22 and frame plate 18, vertically move.Importantly, plate handle 26 is not connected with frame plate 18, so that can vertically move described frame plate with respect to clamping ring metal piece 10 under cover cap 22.So, as mentioned below, when two frame plate pivotables, cause opening or during closing motion, only have frame plate 20 linear or vertically move, and frame plate 18 keeping motionless of described semi-ring.For realizing this purpose, as shown in Figure 9 B, described frame plate 18 is longer than described frame plate 20, that is to say, lengthens frame plate 18 so that this frame plate is adjacent to an end wall 23 of cover cap 22, and this end wall 23 is with respect to the plate pommel of described clamping ring metal piece.
Those skilled in the art will appreciate that opening clamp ring 12,14,16 includes two steps.First, the interlocking end of described semi-ring is separated from each other certain distance; Then, rotate the semi-ring of each clamp ring and make it separated from one another.First plate handle 26 vertically moves frame plate 20 along clamping ring metal piece 10, makes its below along cover cap 22 slide a bit of distance.At this, frame plate 18 is regarded a fixing frame plate as, and in the operating process of plate handle 26, it can not vertically move this frame plate 18 along described clamping ring metal piece significantly.Yet the rotation of plate handle 26 but can vertically move frame plate 20 significantly.With reference to Figure 12, this moves with mark d and represents, for example, say 1/8 ".As shown in figure 12, this moves is enough to semi-ring 16b to remove certain distance, and make the interlocking end of these parts and the interlocking end of corresponding semi-ring 16a separated.In like manner, each semi-ring 12b and 14b also remove identical distance, and the interlocking end of these parts is separated with the interlocking end of corresponding semi-ring 12a and 14a respectively.
Those skilled in the art will appreciate that only vertically moving of frame plate 20 is separated from each other the interlocking end of described semi-ring.Those skilled in the art is also appreciated that people can make it longitudinally separated with corresponding semi-ring 12a, 14a or 16a by manual mobile semi-ring 12b, 14b or 16b, and obtains identical effect.
Clamping ring metal piece 10 also includes spring 30a～30c, and it is arranged at respectively near described clamp ring 12～16 places of cover cap 22 bottom surfaces, and this is at length showed in Fig. 4 and Fig. 8～10.Cover cap 22 bottom surfaces are located to be respectively formed with hangers 32 on two relative sidewalls, and spring 30a～30c is positioned under described frame plate and by these hangers 32 and separately its two ends is fixed in respectively on the relative sidewall of described cover cap.Further, the bottom surface of frame plate 18 is formed with a tab 34, and the bottom surface of frame plate 20 is also formed with a tab 36.Along cover cap 22 wherein the hangers 32 on a sidewall be offset to the hangers on another sidewall of this cover cap.In addition, when loose-leaf binder B is closed, each tab 34 is roughly relative straight with the hangers 32 that is adjacent to described frame plate 20, and each tab 36 is roughly relative straight with the hangers 32 that is adjacent to described frame plate 18.The installation of described spring 30a～30c is as follows, the first branch line 38 of each spring extends out from the hangers 32 of the side-walls that is adjacent to frame plate 18 of described cover cap, pass described frame plate 18 and the tab 36 of the described frame plate 20 that arrives, and next branch line 40 of this spring is oblique, extend through described frame plate and the tab 34 of the frame plate 18 that arrives, finally, another branch line 42 of this spring extends from the tab 34 of frame plate 18, hangers 32 through the side-walls that is adjacent to frame plate 20 of frame plate 20 and the described cover cap that arrives, like this, make spring 30a～30c all form the Z-shaped structure as shown in Fig. 8～10.
In operating process, once frame plate 20 vertically moves with respect to frame plate 18 and the interlocking end of each clamp ring is separated from each other, each spring 30a～30c apply an active force on described frame plate so that described frame plate towards the opening direction pivotable of clamp ring, the rotation of described frame plate and then cause the outer end of described semi-ring separated from one another, thus loose-leaf binder opened.
With reference to Figure 12～15, from the bottom surface of cover cap 22, be formed with a tongue piece 50 downwards.Upper surface at described cover cap cuts out one folding piece, and pushing make its top from described cover cap to downward-extension, thereby form described tongue piece.Or this tongue piece also can be designed as one and is fixed on the Bing Zigai bottom surface, bottom surface of described cover cap to the individual components of downward-extension.As shown in drawings, in any case described tongue piece all forms or is fixed on the position of closing on clamp ring.Understandably, each clamp ring all adjoins and is provided with a tongue piece 50 independently.Described tongue piece all forms (or fixing) in the side place corresponding to frame plate 20 tops of described cover cap.In frame plate 20, be all formed with a notch 52 straight corresponding to each tongue piece 50 position, as shown in figure 14, when described frame plate pivotable, open described clamp ring, the tongue piece being formed in frame plate runs through corresponding notch 52.
So, needing only described clamp ring in open mode, the tongue piece 50 of inserting in notch 52 can stop vertically moving of frame plate 20, thereby makes clamping ring metal piece 10 remain on the state that clamp ring is opened.When closed clamp ring subsequently, described frame plate is towards the direction rotation of the opposite direction with Unscrew clamp ring.Yet in most of process of described frame plate rotation, the part of tongue piece 50 will can continue to stop vertically moving of frame plate 20 through described notch 52, this means that frame plate 20 can only continue pivotable and cannot longitudinally-moving.Yet in the interlocking end of each semi-ring docks each other, frame plate 20 departs from tongue pieces 50, and make the direction that frame plate 20 can fasten each other along the interlocking end of described semi-ring and vertically move, and close loose-leaf binder B.
Next, as shown in figure 15, in another embodiment of the present invention, a tongue piece 60 is formed at or is fixed on the nearly semi-ring 16a place of frame plate 20.One notch 62 is formed on cover cap 22, so that described tongue piece 60 can stretch into this notch 62 in described frame plate 18,20 pivotables when opening described clamp ring.Understandably, be adjacent to each clamp ring place and be provided with a tongue piece 60 independently, and the position that is adjacent to each tongue piece 60 on cover cap 22 is all formed with a notch 62, so, while opening described clamp ring when described frame plate pivotable, tongue piece 60 is respectively in the corresponding notch 62 being formed on cover cap 22.
Structure is as shown in figure 14 the same, the structure of described tongue piece 60/ notch 62 shown in Figure 15 is as follows, as long as described clamp ring is in open mode, the tongue piece 60 that is arranged in notch 62 can stop vertically moving of frame plate 20, makes clamping ring metal piece 10 remain on the state that clamp ring is opened.When described frame plate is when closing the direction rotation of clamp ring, in most of process of described frame plate rotation, the part of tongue piece 60 will be through described notch 62 and stop vertically moving of frame plate 20, this means that described frame plate can only continue pivotable and cannot longitudinal sliding motion.Yet in the interlocking end of each semi-ring docks each other, tongue piece 60 departs from notches 62 so that the direction that frame plate 20 can fasten each other along the interlocking end of described semi-ring and vertically moving, and closes loose-leaf binder B.
Finally, with reference to Figure 11, in another embodiment of the present invention, described spring 30a～30c is substituted by ring spring 60a～60c.These springs are no longer fixed on the hangers 32 of described cover cap 22 inner sides, but are wound between the tab 34 of described frame plate 18 and the tab 36 of described frame plate 20.Described spring 60a～60c role is same as described spring 30a～30c, once vertically moving with respect to frame plate 18, frame plate 20 makes the interlocking end of described clamp ring separately, described spring forces described frame plate towards by the outer end of semi-ring direction pivotable separated from one another, and opens loose-leaf binder.
With regard to the whole enforcement of loose-leaf binder B, the loose-leaf binder that said structure provides a kind of interlocking design by clamp ring to make clamp ring can pin well playback and can not opened unintentionally when closure.So, even if loose-leaf binder is colliding or is being subjected in larger External Force Acting situation, described clamp ring still can remain on closed position of pinning and can not open.Further, once clamp ring be opened, its can remain on open mode always until user determine closed they.
In sum, can find out that some objects of the present invention and advantage all realize, and reach other beneficial effect.
Claims (16)
1. for a clamping ring metal piece for loose-leaf binder, include:
At least one twistlock formula clamp ring, it is consisted of a pair of semi-ring, and when described clamp ring is closed, wherein corresponding one end of one end of a semi-ring and another semi-ring interlocks and closed described clamp ring;
A pair of frame plate, the setting that extends parallel to each other of its length direction along described clamping ring metal piece, the other end of each semi-ring is fixed on wherein in a corresponding frame plate, so that being pivoted relative to each other of described frame plate can affect opening of described clamp ring;
One cover cap, described frame plate is installed under described cover cap, and wherein a frame plate is longer than another frame plate and is adjacent to an end wall of cover cap; And,
Clamp ring opening device, described clamp ring opening device includes a plate handle that is arranged at described clamping ring metal piece one end, described plate handle includes a wind spring and a crow bar, described crow bar is connected in compared with short frame plate and can this shorter frame plate of push-and-pull vertically moves with respect to described cover cap and another frame plate, thereby separate the interlocking end of described semi-ring and open described clamp ring, the direction pivotable that then forces described frame plate to be opened towards clamp ring.
2. clamping ring metal piece as claimed in claim 1, it is characterized in that: described clamp ring opening device further includes the spring in the opposing sidewalls under described frame plate that is positioned at that its two ends are individually fixed in described cover cap bottom surface, once the interlocking end of described semi-ring separately, described spring applies an active force on described frame plate and makes described frame plate open direction pivotable towards clamp ring.
3. clamping ring metal piece as claimed in claim 2, is characterized in that: each frame plate includes a tab that is connected in described spring, so that described spring applies an active force, in described frame plate, makes described frame plate open direction pivotable towards clamp ring.
4. clamping ring metal piece as claimed in claim 3, is characterized in that: described spring is arranged at the near described clamp ring place of described cover cap bottom surface.
5. clamping ring metal piece as claimed in claim 4, is characterized in that: described clamping ring metal piece includes a plurality of twistlock formula clamp rings, and each clamp ring is equipped with a spring independently, and each spring is arranged at nearly its corresponding described clamp ring place of described cover cap bottom surface.
6. clamping ring metal piece as claimed in claim 1, it is characterized in that: the end face of described cover cap is formed with an opening corresponding to each semi-ring place, corresponding opening is passed and protrudes from the top of described semi-ring, the described opening that is fixed on the semi-ring in the described frame plate that can vertically move and forms that is matched with is matched with the opening that is fixed on the semi-ring in frame plate described in another and forms described in being wider than, so that semi-ring can vertically move with respect to semi-ring described in another described in one.
7. clamping ring metal piece as claimed in claim 6, is characterized in that: when described clamp ring is opened, each semi-ring is vertical misalignment each other.
8. clamping ring metal piece as claimed in claim 7, is characterized in that: further include a bottom surface from described cover cap and vertically move frame plate and to the tongue piece of downward-extension to described.
9. clamping ring metal piece as claimed in claim 8, is characterized in that: the described frame plate that vertically moves is formed with a notch, and it takes in described tongue piece and can vertically move frame plate described in pinning when described clamp ring is opened.
10. clamping ring metal piece as claimed in claim 9, is characterized in that: when described frame plate pivotable is during with the described clamp ring of closure, described tongue piece be held in the described notch that can vertically move frame plate until the interlocking end of described semi-ring in conjunction with and closed described clamp ring.
11. clamping ring metal pieces as claimed in claim 9, it is characterized in that: described clamping ring metal piece includes a plurality of clamp rings, at nearly each clamp ring place, each has extended to form a tongue piece downwards in the bottom surface of described cover cap, and described vertically move in frame plate, be formed with position corresponding for taking in the notch of corresponding tongue piece.
12. clamping ring metal pieces as claimed in claim 7, it is characterized in that: further include one and be formed at the described tongue piece and that can vertically move in frame plate and be formed at the notch that can stretch into for described tongue piece when opening clamp ring in described frame plate pivotable on described cover cap, make described tongue piece when described clamp ring is opened, can be accommodated in described notch in and described in pinning, can vertically move frame plate.
13. clamping ring metal pieces as claimed in claim 1, is characterized in that: described clamp ring opening device further includes a spring being connected in described frame plate, and it is for applying an active force in described frame plate and force described clamp ring to be opened.
14. clamping ring metal pieces as claimed in claim 13, it is characterized in that: each frame plate includes a tab, and described spring is the ring spring being wound between described tab, once the interlocking end of described clamp ring is separated, the active force of described spring puts on the position to force described frame plate to be opened towards described clamp ring on described frame plate.
15. clamping ring metal pieces as claimed in claim 14, is characterized in that: described spring is arranged at nearly described clamp ring place.
16. clamping ring metal pieces as claimed in claim 15, is characterized in that: described clamping ring metal piece includes a plurality of twistlock formula clamp rings, and each clamp ring is equipped with a spring independently, and each spring is arranged at respectively the adjacent place of its corresponding clamp ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910207370.1A CN102039743B (en) | 2009-10-20 | 2009-10-20 | Clamping ring metal piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910207370.1A CN102039743B (en) | 2009-10-20 | 2009-10-20 | Clamping ring metal piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102039743A CN102039743A (en) | 2011-05-04 |
| CN102039743B true CN102039743B (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910207370.1A Expired - Fee Related CN102039743B (en) | 2009-10-20 | 2009-10-20 | Clamping ring metal piece |
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| CN (1) | CN102039743B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1839055A (en) * | 2003-10-14 | 2006-09-27 | 国誉株式会社 | Binder and file |
| CN101152810A (en) * | 2006-09-28 | 2008-04-02 | 国际文具制造厂有限公司 | A ring binder mechanism with a sliding hinge plate |
-
2009
- 2009-10-20 CN CN200910207370.1A patent/CN102039743B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1839055A (en) * | 2003-10-14 | 2006-09-27 | 国誉株式会社 | Binder and file |
| CN101152810A (en) * | 2006-09-28 | 2008-04-02 | 国际文具制造厂有限公司 | A ring binder mechanism with a sliding hinge plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102039743A (en) | 2011-05-04 |
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