CN100412390C - Pivoting mechanism and foldable electronic device - Google Patents
Pivoting mechanism and foldable electronic device Download PDFInfo
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- CN100412390C CN100412390C CNB2005100984815A CN200510098481A CN100412390C CN 100412390 C CN100412390 C CN 100412390C CN B2005100984815 A CNB2005100984815 A CN B2005100984815A CN 200510098481 A CN200510098481 A CN 200510098481A CN 100412390 C CN100412390 C CN 100412390C
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- sliding pin
- axle sleeve
- jaw portion
- mandrel
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Abstract
The invention discloses a pivotal structure and folded electric equipment. Wherein pivotal structure comprises core shaft, axile bush and slide pin. Core shaft is the first connecting object and axile bush is the second connecting object, which is ringed with core shaft so as to rotate with each other. Furthermore, open groove is set one side of axile bush and slide pin is set on the position. There are various cross-sections of slide pin in axial direction, wherein by slide pin moving in axial direction open groove is controlled small or big so as to fix tooth by tooth or apart from each other between axile bush and core shaft. Wear damage between rotor shaft and axile bush is decreased by the pivotal structure and folded electric equipment and there is long service life.
Description
Technical field
The present invention relates to a kind of pivot, and be particularly related to a kind of pivot that can be applicable to folding-type electronic device.
Background technique
In the information age now, human dependence for electronic product grows with each passing day, for tackling high-speed, the high-effect and compact requirement of electronic product now, various folding-type electronic devices also gradually become main flow, for example (Personal Digital Assistant PDA) waits folding-type electronic device all to become indispensable application tool in modern's life and the work for notebook computer (Notebook PC), mobile phone (Cell Phone), personal digital aid (PDA).
Folding-type electronic device adopts folding mode to reduce and takes in area, to reach the compact purpose of electronic product, folding-type electronic device is made up of two bodies mostly, wherein a side of two bodies is to interconnect by pivot, two bodies can be rotated mutually, when for example being the closure or openness folding-type electronic device.
Fig. 1 is applied to the schematic representation of notebook computer 100 for known a kind of pivot 130.Please refer to Fig. 1, is example with notebook computer 100, and it comprises screen 110, main frame body 120 and two pivots 130.Wherein, pivot 130 has first support 132, second support 134, rotating shaft 136 and axle sleeve 138, and rotating shaft 136 is to connect screen 110 by first support 132, and axle sleeve 138 then entangles rotating shaft 136, and connects main frame body 120 by second support 134.When opening or closing the screen 110 of notebook computer 100,, can drive screen 110 and relatively rotate with main frame body 120 by cooperatively interacting of rotating shaft 136 and axle sleeve 138.
Yet because the screen of notebook computer and open and close between the main frame body can make the surface abrasion that the rotating shaft of pivot is contacted with axle sleeve, virtually, also reduce many working life that is hubbed at the interior pivot of notebook computer.Especially, continuous compactization of its specification of notebook computer now, pivot is positioned at the configuration space of notebook computer also with limited, therefore the configuration of each element will be more tight in the pivot, the friction infringement of rotating shaft and shaft room is also with even more serious, so how to design a preferable pivot damage with the friction of lowering rotating shaft and shaft room, making pivot that can be arranged long working life will be an important topic.
Summary of the invention
In view of this, the present invention's purpose is exactly to provide a kind of working life long pivot.
The present invention's a purpose again provides a kind of folding-type electronic device of using above-mentioned pivot, so that folding-type electronic device has long working life.
For reaching the present invention's above-mentioned purpose, the present invention proposes a kind of pivot, and it is suitable for connecting first object and second object.This pivot mainly comprises mandrel, axle sleeve and sliding pin.Wherein, mandrel is to connect first object, and axle sleeve then is to connect second object, and the double team mandrel, so that first object and second object relatively rotate.In addition, a side of axle sleeve is provided with fluting, and sliding pin promptly is to be inserted in the fluting place, and sliding pin wherein can control the size of fluting by the axial displacement of sliding pin in its variation that has sectional area on axially, to drive axle sleeve with the mandrel engages fixed or separate.
Described according to one of the present invention embodiment, axle sleeve for example comprises the first jaw portion and the second jaw portion, and a side of the first jaw portion and the second jaw portion interconnects, and the opposite side of the first jaw portion and the second jaw portion is then kept an intersegmental distance, to form fluting.
Described according to one of the present invention embodiment, the first jaw portion, first bump that for example also stretches out, second bump and the second jaw portion for example more stretches out, and sliding pin is to be inserted between first bump and second bump.
Described according to one of the present invention embodiment, sliding pin for example has at least one inclined-plane or a curved surface in the face of a side of the first jaw portion, in order to the breasting first jaw portion.
Described according to one of the present invention embodiment, the first jaw portion for example has at least one projection in the face of a side of sliding pin, in order to the breasting sliding pin.
The present invention also proposes a kind of folding-type electronic device, it comprises first object, second object, pivot, switch push button and continuous action device, wherein pivot is to be arranged at first object side side adjacent with second object, and pivot for example comprises members such as above-mentioned mandrel, axle sleeve and sliding pin.In addition, switch push button is to be arranged on first object, and continuous action device also is to be arranged on first object, and is connected between switch push button and the sliding pin.Wherein,, just can drive the axial displacement of sliding pin,, and then drive axle sleeve with the mandrel engages fixed or separate with the size of control fluting by the pushing switch push button.
Described according to one of the present invention embodiment, continuous action device for example has at least one supporting post and a connecting strand.Wherein, supporting post is to be arranged at the first object periphery, and connecting strand for example is a side that is bearing on supporting post, and detours along the periphery of first object, and is connected between switch push button and the sliding pin.In addition, continuous action device also can be a linkage mechanism.
Described according to one of the present invention embodiment, first object for example is a screen, and second object for example is the main frame body.Perhaps, first object for example is the main frame body, and second object for example is a screen.
Based on above-mentioned, the present invention's pivot can be used for connecting two objects, and first jaw portion of the sliding pin adjustable axle of pivot cover and the spacing between the second jaw portion to change the adaptation of mandrel and shaft room, make the surface of mandrel and the internal surface area of contact of axle sleeve reduce.In other words, because the internal surface area of contact of the surface of mandrel and axle sleeve reduces, axle sleeve is to the also attenuating relatively of chucking power of mandrel, that is axle sleeve alleviates for the normal stress of mandrel, and the torsion between axle sleeve and mandrel also can reduce.Thus, when first object and second object rotated mutually, the mandrel surface also can reduce with the degree of wear of axle sleeve internal surface, so pivot of the present invention has the working life of growing.
State with other purpose, feature and advantage and can become apparent on the present invention for allowing, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is applied to the schematic representation of notebook computer for a kind of known pivot.
Fig. 2 is the schematic representation of a kind of pivot of the present invention's preferred embodiment.
Fig. 3 is the front view of the pivot of Fig. 2.
Fig. 4 a is the profile of the pivot of Fig. 3 along hatching A-A '.
Fig. 4 b is the profile of the pivot of Fig. 3 along hatching B-B '.
Fig. 5 a be Fig. 3 pivot sliding pin axial L displacement suitably the distance back along the profile of hatching A-A '.
Fig. 5 b be Fig. 3 pivot sliding pin axial L displacement suitably the distance back along the profile of hatching B-B '.
Fig. 6 is in a preferred embodiment of the present invention, pivot is applied to the schematic representation of notebook computer.
Fig. 7 is the partial schematic diagram that the switch push button of the notebook computer of Fig. 6 drives sliding pin.
Fig. 8 a is the schematic representation of the another kind of pivot of preferred embodiment of the present invention.
Fig. 8 b is the schematic representation after the suitable distance of the sliding pin displacement among Fig. 8 a.
The primary component description of symbols
100,300: notebook computer
110,310: screen
120,320: the main frame body
130: pivot
132,350: the first supports
134,360: the second supports
136: rotating shaft
138: axle sleeve
200: pivot
210,410: mandrel
220,420: axle sleeve
222: the first jaw portions
222a: first bump
222b: projection
224: the second jaw portions
224a: second bump
W1, W2: spacing
226,426: fluting
230,430: sliding pin
232: the inclined-plane
330: switch push button
340: continuous action device
342: supporting post
344: connecting strand
L: axially
Embodiment
Fig. 2 is the schematic representation of a kind of pivot 200 of the present invention's preferred embodiment.Please refer to Fig. 2, in the present invention, pivot 200 comprises mandrel 210, axle sleeve 220 and sliding pin 230.Wherein, mandrel 210 is connected in first object, and 220 on axle sleeve is a double team mandrel 210, and connects second object.The present invention's pivot 200 is suitable for linking first object and the second object (not shown), makes first object and second object can pass through pivot 200 with mutual rotation.Wherein, first object and second object for example are respectively screen or main frame body, and certainly, first object also can comprise the support that is connected with pivot with second object.
It should be noted that, one side of axle sleeve 220 is provided with fluting 226, and sliding pin 230 promptly is inserted in the fluting 226, and sliding pin 230 has the variation of sectional area on its axial L, the size of the axial L displacement may command fluting 226 by sliding pin 230 wherein is to drive axle sleeve 220 with mandrel 210 engages fixed or separate.In other words, by adjusting the size of fluting 226, can make the torsion and the reduction of abrasion degree of 220 on axle sleeve of mandrel 210 and double team mandrel 210, with the working life of prolongation pivot 200.
Fig. 3 is the front view of the pivot 200 of Fig. 2, and Fig. 4 a is the profile of the pivot 200 of Fig. 3 along hatching A-A ', and Fig. 4 b is the profile of the pivot 200 of Fig. 3 along hatching B-B '.Please be simultaneously with reference to Fig. 3, Fig. 4 a and Fig. 4 b, the axle sleeve 220 of present embodiment for example is a C profile shaft cover, it comprises the first jaw portion 222 and the second jaw portion 224, one side of the first jaw portion 222 and the second jaw portion 224 interconnects, it is one intersegmental apart from W1 that the opposite side of the first jaw portion 222 and the second jaw portion 224 is then kept, and form above-mentioned fluting 226.Hereinafter will describe in detail the structure of sliding pin 230 with axle sleeve 220.
In the present embodiment, axle sleeve 220 for example is the double-contracting structure, the both sides of the first jaw portion 222 of this axle sleeve 220 first bump 222a that stretches out respectively, the second bump 224a that can stretch out of the second jaw portion 224 of axle sleeve 220, and sliding pin 230 is to be inserted between the first bump 222a and the second bump 224a.Wherein, each first bump 222a for example has protruding 222b respectively in the face of a side of sliding pin 230.In one embodiment, protruding 222b forms by the punching press first bump 222a or other suitable processing mode.In addition, sliding pin 230 for example has inclined-plane 232 (or curved surface) in the face of the side of each first bump 222a, to be formed in the variation of the sectional area on its axial L.Wherein, the inclined-plane 232 (or curved surface) of sliding pin 230 is in order to breasting projection 222b, to change the spacing W1 of axle sleeve 220 by displacement sliding pin 230.
At this, be described further at the above-mentioned size of adjusting spacing W1 in the displacement on the axial L by sliding pin 230, please earlier with reference to Fig. 4 a, sliding pin 230 has inclined-plane 232 (or curved surface) in the face of the side of each first bump 222a, and the opposite side of sliding pin 230 then is to be bearing on the second bump 224a.In addition, each first bump 222a has a protruding 222b in the face of a side of sliding pin 230, and protruding 222b is bearing on the sliding pin 230.Then please refer to Fig. 4 b, can be learnt by figure, when sliding pin 230 was in the state of Fig. 3,220 on the axle sleeve of mandrel 210 and double team mandrel 210 was to be in the state of closely cooperating.
Fig. 5 a be Fig. 3 pivot 200 sliding pin 230 axial L displacement suitably the distance back along the profile of hatching A-A ', Fig. 5 b be Fig. 3 pivot 200 sliding pin 230 axial L displacement suitably after the distance along the profile of hatching B-B '.Please refer to Fig. 5 a, after the suitable distance of sliding pin 230 L displacement vertically, the inclined-plane 232 (or curved surface) on the sliding pin 230 can contact with the protruding 222b on the first bump 222a, and the first bump 222a and the second bump 224a are strutted.Please refer to Fig. 5 b, because sliding pin 230 struts the first bump 222a and the second bump 224a, so the first jaw portion 222 and 224 in the second jaw portion have bigger spacing W2, be that 220 on mandrel 210 and axle sleeve can be in the interference fit state, so mandrel 210 reduces with the area of contact of axle sleeve 220,220 friction infringements that caused because of relatively rotating of first object and second object of mandrel 210 and axle sleeve also will reduce.
Hold above-mentionedly, because mandrel 210 is to be in the interference fit state with axle sleeve 220, the chucking power of 220 pairs of mandrels 210 of axle sleeve also relatively lowers, that is axle sleeve 220 alleviates for the normal stress of mandrel 210, and the torsion of 210 of axle sleeve 220 and mandrels also can reduce.Compare with known technology, pivot 200 of the present invention can be by the torsion and friction infringement of sliding pin 230 to reduce by 210 of axle sleeve 220 and mandrels, so pivot of the present invention has long working life.Certainly, after the action of finishing pivot, sliding pin 230 can return back to initial position (shown in Fig. 4 a) once again, and spacing W2 returns back to initial separation W1.
The present invention's pivot for example can be applicable to folding-type electronic devices such as notebook computer, mobile phone, personal digital aid (PDA).Fig. 6 is in a preferred embodiment of the present invention, pivot is applied to the schematic representation of notebook computer.Please refer to Fig. 6, notebook computer 300 comprises screen 310, main frame body 320, switch push button 330, continuous action device 340 and above-mentioned pivot 200.Wherein, switch push button 330 is arranged on the screen 310, and continuous action device 340 also is arranged on the screen 310, continuous action device 340 and be connected in switch push button 330 and the sliding pin 230 of pivot 200 between.Thus, by pushing switch push button 330,,, and then drive axle sleeve 220 with mandrel 210 engages fixed or separate with the size of control fluting 226 (shown in Fig. 4 b) just can drive the axial displacement of sliding pin 230.In addition, the adjacent side of 200 of the pivots screen 310 that is arranged at notebook computer 300 and main frame body 320.
From the above, notebook computer for example disposes pivot a plurality of or a large-size, make screen and this physical efficiency of main frame by pivot successfully to rotate mutually.
Fig. 7 is the partial schematic diagram that the switch push button 330 of the notebook computer 300 of Fig. 6 drives sliding pin 230.Please refer to Fig. 7, in the present embodiment, continuous action device 340 for example comprises a plurality of supporting posts 342 and connecting strand 344.Wherein, supporting post 342 is the peripheries that are arranged at screen 310.In addition, connecting strand 344 is sides that are bearing on supporting post 342, and detours along the periphery of screen 310, and connecting strand 344 is connected between the sliding pin 230 of switch push button 330 and pivot 200.In addition, the material of supporting post 342 for example is copper, plastics or other material that is suitable for.
Hold above-mentioned, when pushing switch push button 330, continuous action device 340 can drive the sliding pin 230 of pivot 200 at its axial L top offset, spacing W1 size (shown in Fig. 4 b) with 224 in the first jaw portion 222 that adjusts pivot 200 its axle sleeves 220 and the second jaw portion, the torsion of 220 on mandrel 210 in the pivot 200 and axle sleeve is reduced, to prolong the working life of pivot 200 with the friction infringement.Because the kinematic relation that sliding pin 230 and axle sleeve are 220 describes in detail as above, so no longer repeat in this.In addition, can pass through pivot 200 smoothly with mutual rotation for making screen 310 and main frame body 320, the notebook computer 300 of present embodiment for example also comprises first support 350 and second support 360.Wherein, mandrel 210 is to be connected to screen 310 by first support 350, and axle sleeve 220 is to be connected to main frame body 320 by second support 360.
Certainly, except that the foregoing description was described, the present invention also for example can be arranged at switch push button 330 or continuous action device 340 on the main frame body.
In other embodiment of the present invention, also for example can be used as continuous action device 340 with the mechanism of linkage mechanism or other form, all devices that can drive the axial L displacement of pivot 200 its sliding pins 230 all belong to the present invention's spirit and scope, so the present invention does not limit the design of continuous action device 340 at this.
What deserves to be mentioned is, the present invention's pivot is by mobile sliding pin the spacing of fluting to be increased, the mandrel that is subjected to the axle sleeve engages fixed can successfully be rotated, and can reduce the degree of wear of mandrel surface and axle sleeve internal surface so that pivot has long working life.Simultaneously, also can come to cooperatively interact with axle sleeve by the geometric characteristic of mandrel, so that pivot has the effect of rotation positioning, the internal surface of its Intermediate shaft sleeve be made of to limit the rotation angle of mandrel a plurality of planes.Thus, when the fluting of axle sleeve is strutted, mandrel can be driven and be rotated tilt fixing successively.At this moment, return back to original state as axle sleeve, mandrel then will be subjected to the engages fixed of axle sleeve again, so pivot has the effect of rotation positioning.
Fig. 8 a is the schematic representation of another kind of pivot 400 of the present invention's preferred embodiment, and Fig. 8 b is the suitable schematic representation after the distance of sliding pin 430 displacements among Fig. 8 a.By Fig. 8 a as can be known, the pivot 400 of present embodiment is used the mandrel 410 of polygonal column, and mandrel 410 for example is the dodecagon cylinder at present embodiment, and axle sleeve 420 then can cooperate the geometrical shape of mandrel 410 with engages fixed mandrel 410.Then please refer to Fig. 8 b, after the suitable distance of sliding pin 430 displacements, sliding pin 430 can strut fluting 426, and promptly 420 on mandrel 410 and axle sleeve can be in the interference fit state.This moment, be activated and when rotating as mandrel 410, mandrel 410 will be by rotating tilt fixing successively with cooperating of axle sleeve 420, wherein the rotation angle of the mandrel 410 of polygonal column is subjected to the restriction of the geometrical construction of axle sleeve 420 internal surfaces, that is pivot 400 has the effect of rotation positioning.
In addition, though the above embodiment of the present invention only discloses this pivot is applied to folding-type electronic devices such as notebook computer, yet the person of ordinary skill in the field is behind reference the present invention, for example should applying the present invention to, door makes two objects other field in relative rotation with need such as doorframe, casing and lids by pivot, with the working life of prolongation pivot, and improve reliability of products.
In sum, the fluting spacing of its sliding pin adjustable axle cover of the present invention's pivot, to change the adaptation of mandrel and shaft room, make two objects that connect by pivot when relatively rotating, the minimizing of the internal surface area of contact of the surface of mandrel and axle sleeve.In other words, because the internal surface area of contact of the surface of mandrel and axle sleeve reduces, axle sleeve is to the also attenuating relatively of chucking power of mandrel, that is axle sleeve alleviates for the normal stress of mandrel, and the torsion between axle sleeve and mandrel also can reduce.Thus, when two objects rotated mutually, the mandrel surface also can reduce with the degree of wear of axle sleeve internal surface, so the present invention's pivot has long working life, concerning the product of using pivot of the present invention, also improved the reliability of product virtually.It should be noted that because the abrasion degree between mandrel surface and axle sleeve internal surface is lower, so between mandrel surface and axle sleeve internal surface preferable mutual frictional force is arranged.Therefore, for example be when opening notebook computer, the mutual frictional force that screen and main frame body can be by mandrel and shaft rooms is to be fixed in relative position.On the other hand, the present invention's pivot also can be used the mandrel with geometric characteristic and come to cooperatively interact with axle sleeve, so that pivot has the effect of rotation positioning.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; any person of ordinary skill in the field; without departing from the spirit and scope of the invention; when can doing a little change and improvement, so the present invention's protection domain is as the criterion when looking the claim person of defining.
Claims (10)
1. pivot, it is suitable for connecting first object and second object, and this pivot comprises:
Mandrel connects this first object; Axle sleeve, this mandrel of double team, and connect this second object, it is characterized in that:
One side of this axle sleeve is provided with fluting; And this pivot also comprises:
Sliding pin is inserted in this fluting, and this sliding pin has the variation of sectional area on axially at it, and size that the axial displacement may command by this sliding pin should fluting wherein is to drive this axle sleeve with this mandrel engages fixed or separate.
2. pivot according to claim 1, it is characterized in that this axle sleeve comprises the first jaw portion and the second jaw portion, one side of this first jaw portion and this second jaw portion interconnects, and the opposite side of this first jaw portion and this second jaw portion keeps an intersegmental distance, to form this fluting.
3. pivot according to claim 2 is characterized in that this first jaw portion first bump that also stretches out, second bump and this second jaw portion also stretches out, and this sliding pin is to be inserted between this first bump and this second bump.
4. pivot according to claim 2 is characterized in that this sliding pin has at least one inclined-plane or a curved surface in the face of a side of this first jaw portion, in order to this first jaw portion of breasting.
5. pivot according to claim 2 is characterized in that this first jaw portion has at least one projection in the face of a side of this sliding pin, in order to this sliding pin of breasting.
6. folding-type electronic device, it comprises: first object; Second object; Pivot is arranged at this first object side side adjacent with this second object, and this pivot comprises: mandrel connects this first object; Axle sleeve, this mandrel of double team, and connect this second object, it is characterized in that:
One side of this axle sleeve is provided with fluting, and this pivot also comprises:
Sliding pin is inserted in this fluting, and this sliding pin has the variation of sectional area on axially at it,
And this folding-type electronic device also comprises:
Switch push button is arranged on this first object; And
Continuous action device is arranged on this first object, and is connected between this switch push button and this sliding pin, wherein by promoting this switch push button, can drive the axial displacement of this sliding pin, controlling the size of this fluting, and then drive this axle sleeve with this mandrel engages fixed or separate.
7. folding-type electronic device according to claim 6 is characterized in that this continuous action device comprises linkage mechanism.
8. want 6 described folding-type electronic devices according to right, it is characterized in that this continuous action device comprises:
At least one supporting post is arranged at the periphery of this first object; And
Connecting strand is bearing on a side of this supporting post, and detours along the periphery of this first object, and is connected between this switch push button and this sliding pin.
9. folding-type electronic device according to claim 6 it is characterized in that this first object comprises screen, and this second object comprises the main frame body.
10. folding-type electronic device according to claim 6 it is characterized in that this first object comprises the main frame body, and this second object comprises screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100984815A CN100412390C (en) | 2005-09-08 | 2005-09-08 | Pivoting mechanism and foldable electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100984815A CN100412390C (en) | 2005-09-08 | 2005-09-08 | Pivoting mechanism and foldable electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1928373A CN1928373A (en) | 2007-03-14 |
| CN100412390C true CN100412390C (en) | 2008-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100984815A Active CN100412390C (en) | 2005-09-08 | 2005-09-08 | Pivoting mechanism and foldable electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100412390C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009025046A1 (en) * | 2007-08-22 | 2009-02-26 | Taiyo Industry Co., Ltd. | Folding apparatus |
| CN105202021B (en) * | 2014-06-30 | 2017-12-29 | 联想(北京)有限公司 | A kind of carriage and notebook computer |
| TW201612430A (en) * | 2014-09-24 | 2016-04-01 | First Dome Corp | Transformable hinge structure |
| CN109194784B (en) * | 2018-09-12 | 2020-05-19 | 富世达股份有限公司 | Multi-connecting-rod hinge and electronic device |
| CN113949761B (en) * | 2021-11-26 | 2023-10-24 | 维沃移动通信有限公司 | Folding support device and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2307172A1 (en) * | 1975-04-09 | 1976-11-05 | Goiffon Ets Leon | Hinged box with lid overlying base rim - has arcuate slot in rim allowing lid stub to slide between positions limited by slot ends |
| US4388012A (en) * | 1980-07-23 | 1983-06-14 | Illinois Tool Works Inc. | Swivel connector |
| JP2001123728A (en) * | 1999-10-27 | 2001-05-08 | Takigen Mfg Co Ltd | Locking structure for shaft |
-
2005
- 2005-09-08 CN CNB2005100984815A patent/CN100412390C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2307172A1 (en) * | 1975-04-09 | 1976-11-05 | Goiffon Ets Leon | Hinged box with lid overlying base rim - has arcuate slot in rim allowing lid stub to slide between positions limited by slot ends |
| US4388012A (en) * | 1980-07-23 | 1983-06-14 | Illinois Tool Works Inc. | Swivel connector |
| JP2001123728A (en) * | 1999-10-27 | 2001-05-08 | Takigen Mfg Co Ltd | Locking structure for shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1928373A (en) | 2007-03-14 |
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