CN2653085Y

CN2653085Y - Pivot hinge

Info

Publication number: CN2653085Y
Application number: CN 03252015
Authority: CN
Inventors: 戴文浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-14
Filing date: 2003-08-14
Publication date: 2004-11-03
Anticipated expiration: 2013-08-14

Abstract

The utility model discloses a pivot hinge in connection with a mussel type screen of an electronic device and a host computer, in which comprises a pivot piece, a pivot bracket, a connecting piece with a pivot bracket, at least one inner teeth clip between the connecting pieces. When the pivot bracket and the inner teeth clips are arranged orderly on the pivot piece, the pivot hinge can be combined and formed by the connecting piece locked and fixed on the trail end of the pivot piece. Thus, When the installation part of the pivot piece and the installation part of the pivot bracket are respectively installed in a screen of a mussel type electronic device(such as a portable computer) and a host computer, by location of the inner teeth of the equal inner teeth clip and catching on a surface of a shaft of the pivot piece, the screen can be prevented from turning over and driving the connecting piece to rotate together. Thereby, whatever how many times the user turns over the screen, the connecting piece will not fall off the pivot piece.

Description

Pivot hinge

Technical field

The utility model relates to a kind of pivot hinge, particularly a kind of screen of freshwater mussel electronic installation and the pivot hinge between the main frame.

Background technology

Between the liquid crystal screen display and main frame of general portable computer (as: notebook computer), be that a pair of hinge of mat articulates, make this liquid crystal screen display be able to be raised or be covered on the main frame.At present the price of notebook computer under the situation of low price route development, is necessary to research and develop a kind of overall structure in fact and simply reaches the high new hinges of stability gradually, to reduce fault rate and to reduce the cost of production of this notebook computer.

The utility model content

The purpose of this utility model be to solve that complex structure, stability that existing pivot hinge exists are low, fault rate and the high problem of cost of production, and provide a kind of pivot hinge that overcomes above-mentioned shortcoming.

The utility model includes at least one internal tooth intermediate plate between a pivotal part, a pivot brackets, a tying means and pivot brackets and tying means, wherein,

This pivotal part one end is provided with an installation portion that can be installed on freshwater mussel formula electronic device host, and end then is provided with a part in addition, and this part end has a locking part;

This pivot brackets one end vertically is provided with an installation portion that can be installed on freshwater mussel formula electronic installation screen, and end then is provided with a pivot that is rotatably mounted in the axle part of this pivotal part in addition changes the hole;

One tying means;

The internal tooth intermediate plate is located between pivot brackets, the tying means, and these internal tooth intermediate plate inner edges have several internal tooths radially towards the center; This pivot brackets, these internal tooth intermediate plates are installed on this pivotal part in regular turn, see through the locking part that this tying means is locked in this pivotal part end, order is combined to form a pivot hinge, so, with the installation portion of this pivotal part and the installation portion of this pivot brackets, when being installed on the screen of a freshwater mussel formula electronic installation and main frame respectively, the internal tooth that can see through these internal tooth intermediate plates is located, is sticked on the axle part surface of this pivotal part, when order can prevent to overturn this screen, driving this tying means rotates together, and then after preventing that this screen is reversed repeatedly, this tying means comes off on this pivotal part.

Description of drawings

Fig. 1 is the three-dimensional exploded view one of the utility model first embodiment.

Fig. 2 is the three-dimensional combination figure one of the utility model first embodiment.

Fig. 3 is the three-dimensional exploded view two of the utility model first embodiment.

Fig. 4 is the three-dimensional exploded view three of the utility model first embodiment.

Fig. 5 is the three-dimensional combination figure two of the utility model first embodiment.

Fig. 6 is the three-dimensional exploded view four of the utility model first embodiment.

Fig. 7 is the three-dimensional combination figure three of the utility model first embodiment.

Fig. 8 is the three-dimensional exploded view five of the utility model first embodiment.

Fig. 9 is the three-dimensional combination figure four of the utility model first embodiment.

Figure 10 is the three-dimensional exploded view of another embodiment of the utility model.

Figure 11 is the three-dimensional combination figure of another embodiment of the utility model.

Figure 12 is the utility model three-dimensional exploded view of an embodiment again.

Figure 13 is the utility model three-dimensional combination figure of an embodiment again.

The specific embodiment

See also Fig. 1, shown in Figure 2, be first embodiment of the present utility model, this pivot hinge 10 mainly comprises a pivotal part 11, one pivot brackets 12, at least one internal tooth intermediate plate 14 that one tying means 13 and pivot brackets 12 and tying means are 13, wherein, these pivotal part 11 1 ends are provided with an installation portion 111 that can be installed on freshwater mussel formula electronic installation (as notebook computer) main frame (not shown), end then is provided with a part 112 in addition, these part 112 ends have a locking part 113, and these pivot brackets 12 1 ends vertically are provided with an installation portion 121 that can be installed on freshwater mussel formula electronic installation (as: notebook computer) screen (not shown), in addition end then is provided with a pivoting hole 123 that is rotatably mounted in the axle part 112 of this pivotal part 11, these internal tooth intermediate plate 14 inner edges have a plurality of internal tooths 141 radially towards the center, with this pivot brackets 12, when these internal tooth intermediate plates 14 are installed on this pivotal part 11 in regular turn, can see through the locking part 113 that this tying means 13 is locked in these pivotal part 11 ends, order is combined to form a pivot hinge 10, so, with the installation portion 111 of this pivotal part 11 and the installation portion 121 of this pivot brackets 12, when being installed on the screen of a freshwater mussel formula electronic installation (as: notebook computer) and main frame respectively, can see through internal tooth 141 location of these internal tooth intermediate plates 14, be sticked on axle part 112 surfaces of this pivotal part 11, when order can prevent to overturn this screen, driving this tying means 13 rotates together, and then after preventing that this screen is reversed repeatedly, this tying means 13 comes off on this pivotal part 11.

In this embodiment, see also Fig. 1 again, shown in Figure 2,12 of this pivotal part 11 and this pivot brackets still include a stator 15, an one oily sheet 16 and a

clip sheet

17,12 of these internal tooth intermediate plates 14 and this pivot brackets then still include a clip sheet 17, an one oily sheet 16 and a stator 15, wherein the edge-perpendicular of these clip sheets 17 is provided with a location division 171, and pivoting hole 123 1 sides of this pivot brackets 12 are provided with a locating hole 125 that matches with these location divisions 171, make location division 171 be installed on the locating hole 125, make these clip sheets 17 be installed on the dual-side of pivoting hole 123 respectively.

In this embodiment, see also Fig. 1, shown in Figure 2, still include at least one breach type taper elastomeric pad 18 between these internal tooth intermediate plates 14, one sleeve pipe 19 and a flat shim 110, wherein respectively this breach type taper elastomeric pad 18 roughly surrounds into one along a hand of spiral and does not seal spiral ring, and form a breach 181 that defines by its two ends, these breach type taper elastomeric pads 18 are from interior radial outer diameter direction inclination and form a tapering, so that it can bear bigger compressive force, and these breach type taper elastomeric pads 18 are to provide axial elastic force to each element that is located on the part 112, and make it mutual elasticity near, can cooperating by locking part 113 and tying means 13, and adjust the size of this elastic force, and then control the pivot tightness of 11 of this pivot brackets 12 and this pivotal parts; When this tying means 13 screws in, these breach type taper elastomeric pads 18 are pushed, axle each element on the part 112 thereupon the pushing that is subjected to breach type taper elastomeric pad 18 and near, the contact friction of each element is increased, and then the pivotal resistance increase of this

pivot brackets

12 and 11 of this pivotal parts, relatively, when this tying means 13 screws out, these breach type taper elastomeric pads 18 loosen, so the pivotal resistance that this pivot brackets 12 and this pivotal part are 11 reduces.

In this embodiment, see also Fig. 1, shown in Figure 2 again, the installation portion 111 of this pivotal part 11 is provided with at least one installing hole 1111, and order is installed on this pivotal part 11 on the main frame of freshwater mussel formula electronic installation by this installing hole 1111.

In this embodiment, see also Fig. 1, shown in Figure 2 again, these 113 surfaces, locking part are provided with screw thread, and this tying means 13 can be one with the nut of this threads engaged, make this tying means 13 screw togather and be locked on this locking part 113.

In this embodiment, see also Fig. 1, shown in Figure 2 again, the installation portion 121 of this pivot brackets 12 is provided with at least one installing hole 1211, and order is installed on this pivot brackets 12 on the screen of freshwater mussel formula electronic installation by this installing hole 121.

In this embodiment, see also shown in Figure 3ly, 12 of this pivotal part 11 and this pivot brackets are provided with at least one internal tooth intermediate plate 14, breach type taper elastomeric pad 18.

In this embodiment, please consult Fig. 4, shown in Figure 5 again, this part 112 is provided with a rotation prevention portion 114, this rotation prevention portion 114 has a plane, 12 of this pivotal part 11 and this pivot brackets still include a stator 15 and an

oily sheet

16,12 of these internal tooth intermediate plates 14 and this pivot brackets then still include an oily sheet 16 and a stator 15, wherein these stator 15 inner edges are provided with the orle 151 that matches with the plane of rotation prevention portion 114, order is installed on this plane by this orle 151, reaches the positioning action of these stators 15.

In this embodiment, see also Fig. 6, shown in Figure 7, this part 112 is provided with a rotation prevention portion 114, this rotation prevention portion 114 has a plane, 12 of this pivotal part 11 and this pivot brackets still include a stator 15, an at least one oily sheet 16 and a

clip sheet

17,12 of these internal tooth intermediate plates 14 and this pivot brackets then still include a clip sheet 17, an at least one oily sheet 16 and a flat shim 31, wherein, the edge-perpendicular of these clip sheets 17 is provided with a location division 171, pivoting hole 123 1 sides of this pivot brackets 12 are provided with a locating hole 125 that matches with these location divisions 171, make location division 171 be installed on the locating hole 125, make these clip sheets 17 be installed on the dual-side of pivoting hole 123 respectively, and these stator 15 inner edges are provided with the orle 151 that matches with the plane of rotation prevention portion 114, order is installed on this plane by this orle 151, reaches the positioning action of these stators 15.

In this embodiment, see also Fig. 8, shown in Figure 9,12 of this pivotal part 11 and this pivot brackets still include an at least one oily sheet 16 and a

clip sheet

17,12 of these internal tooth intermediate plates 14 and this pivot brackets then still include a clip sheet 17 and at least one oily sheet 16, wherein, the edge-perpendicular of these clip sheets 17 is provided with a location division 171, pivoting hole 123 1 sides of this pivot brackets 12 are provided with a locating hole 125 that matches with these location divisions 171, make location division 171 be installed on the locating hole 125, make these clip sheets 17 be installed on the dual-side of pivoting hole 123 respectively, again, these internal tooths flat 14 and 19 of this sleeve pipes are provided with a flat shim 110.

See also Figure 10, shown in Figure 11, be another embodiment of the present utility model, this pivot hinge 50 mainly comprises a pivotal part 51, one location support 52, one pivot brackets 53, one tying means 54 and pivot brackets 53, at least one internal tooth intermediate plate 55 that tying means is 54, wherein, this pivotal part 51 is provided with a part 511, this part 511 is provided with the rotation prevention portion 512 on a plane, and these part 511 ends have a locking part 513, and these locating support 52 1 ends are provided with an installation portion 521 that can be installed on freshwater mussel formula electronic installation (as: notebook computer) main frame (not shown), end then vertically is provided with a registration arm 523 in addition, these registration arm 523 ends are provided with the spline hole 525 of the rotation prevention portion 512 that can be placed in this part 511, when making spline hole 525 be placed on the rotation prevention portion 512, this locating support 52 can be located and can't be rotated, and these pivot brackets 53 1 ends vertically are provided with an installation portion 531 that can be installed on freshwater mussel formula electronic installation (as: notebook computer) screen (not shown), in addition end then is provided with a pivoting hole 533 that is rotatably mounted in the axle part 511 of this pivotal part 51, these internal tooth intermediate plate 55 inner edges have a plurality of internal tooths 551 radially towards the center, with locating support 52, this pivot brackets 53, when these internal tooth intermediate plates 55 are installed on this pivotal part 51 in regular turn, can see through the locking part 513 that this tying means 54 is locked in these pivotal part 51 ends, order is combined to form a pivot hinge 50, so, with the installation portion 521 of this locating support 52 and the installation portion 531 of this pivot brackets 53, when being installed on the screen of a freshwater mussel formula electronic installation (as: notebook computer) and main frame respectively, can see through internal tooth 551 location of these internal tooth intermediate plates 55, be sticked on axle part 511 surfaces of this pivotal part 51, when order can prevent to overturn this screen, driving this tying means 54 rotates together, and then after preventing that this screen is reversed repeatedly, this tying means 54 comes off on this pivotal part 51.

In this embodiment, see also Figure 10 again, shown in Figure 11,53 of this locating support 52 and this pivot brackets still include a sleeve pipe 56, at least one internal tooth intermediate plate 55, one stator 57, an one oily sheet 58 and a clip sheet 59,53 of these internal tooth intermediate plates 55 and this pivot brackets then still include a clip sheet 59, an one oily sheet 58 and a stator 57, wherein the edge-perpendicular of these clip sheets 59 is provided with a location division 591, and pivoting hole 533 1 sides of these pivot brackets 53 pivoted arms 535 are provided with a locating hole 537 that matches with these location divisions 591, make location division 591 be installed on the locating hole 537, make these clip sheets 59 be installed on the dual-side of pivoting hole 533 respectively, again, these stator 57 inner edges are provided with the orle 571 that matches with the plane of rotation prevention portion 512, order is installed on this plane by this orle 571, reaches the positioning action of these stators 57.

In this embodiment, see also Figure 10 again, shown in Figure 11, still include at least one breach type taper elastomeric pad 71 between these internal tooth intermediate plates 55, one sleeve pipe 72 and a flat shim 73, wherein respectively this breach type taper elastomeric pad 71 roughly surrounds into one along a hand of spiral and does not seal spiral ring, and form a breach 181 that defines by its two ends, these breach type taper elastomeric pads 71 are from interior radial outer diameter direction inclination and form a tapering, so that it can bear bigger compressive force, and these breach type taper elastomeric pads 71 are to provide axial elastic force to each element that is located on the part 511, and make it mutual elasticity near, can cooperate with tying means 54 by locking part 513, and adjust the size of this elastic force, and then control the pivot tightness of 52 of this pivot brackets 53 and this locating supports; When this tying means 54 screws in, these breach type taper elastomeric pads 71 are pushed, axle each element on the part 511 thereupon the pushing that is subjected to breach type taper elastomeric pad 71 and near, the contact friction of each element is increased, and then the pivotal resistance increase of this pivot brackets 53 and 52 of this locating supports, relatively, when this tying means 54 screws out, these breach type taper elastomeric pads 71 loosen, so the pivotal resistance that this pivot brackets 53 and this locating support are 52 reduces.

In this embodiment, see also Figure 10, shown in Figure 11 again, the installation portion 521 of this locating support 52 is provided with at least one installing hole 5211, and order is installed on this locating support 52 on the main frame of freshwater mussel formula electronic installation by this installing hole 5211.

In this embodiment, see also Figure 10, shown in Figure 11 again, these 513 surfaces, locking part are provided with screw thread, and this tying means 54 can be one with the nut of this threads engaged, make this tying means 54 screw togather and be locked on this locking part 513.

In this embodiment, see also Figure 10, shown in Figure 11 again, the installation portion 531 of this pivot brackets 53 is provided with at least one installing hole 5311, and order is installed on this pivot brackets 53 on the screen of freshwater mussel formula electronic installation by this installing hole 5311.

See also Figure 12, shown in Figure 13, be an embodiment more of the present utility model, this pivot hinge 90 mainly comprises at least one internal tooth intermediate plate 94 of 93 of a pivotal part 91, a pivot brackets 92, a tying means 93 and pivot brackets 92, tying means, wherein, these pivotal part 91 1 ends be provided with one can be installed on freshwater mussel formula electronic installation (as; Notebook computer) installation portion 911 of main frame (not shown), end then is provided with a part 912 in addition, these part 912 ends have a locking part 913, and these pivot brackets 92 1 ends vertically are provided with an installation portion 921 that can be installed on freshwater mussel formula electronic installation (as: notebook computer) screen (not shown), in addition end then is provided with a pivoting hole 923 that is rotatably mounted in the axle part 912 of this pivotal part 91, these internal tooth intermediate plate 94 inner edges have a plurality of internal tooths 941 radially towards the center, with this pivot brackets 92, when these internal tooth intermediate plates 94 are installed on this pivotal part 91 in regular turn, can see through the locking part 913 that this tying means 93 is locked in these pivotal part 91 ends, order is combined to form a pivot hinge 90, so, with the installation portion 911 of this pivotal part 91 and the installation portion 921 of this pivot brackets 92, when being installed on the screen of a freshwater mussel formula electronic installation (as: notebook computer) and main frame respectively, can see through internal tooth 941 location of these internal tooth intermediate plates 94, be sticked on axle part 912 surfaces of this pivotal part 91, when order can prevent to overturn this screen, driving this tying means 93 rotates together, and then after preventing that this screen is reversed repeatedly, this tying means 93 comes off on this pivotal part 91.

In this embodiment, see also Figure 12 again, shown in Figure 13, this part 912 is provided with one first part 9121 and one second part 9123, wherein these first part 9121 external diameter is greater than second part 9123, first rotation prevention portion 125 that has a plane on this first part 9121, be arranged with a C shape stator 95 and a torsionspring 96 on this first part 9121, when making C shape stator 95 be installed on this first part 9121 by the plane of this first part 9121, can locate and not rotate, two ends that this button changes spring 96 stretch out, wherein an end is embedded on the breach 951 of this C shape stator 95, terminal in addition then being sticked on the projection 925 of this pivot brackets 92, order is offset the resistance of this screen of upset by the elastic force of this torsionspring 96, and the user can pull open this screen more smoothly.

In this embodiment, see also Figure 12 again, shown in Figure 13, second rotation prevention portion 9127 that has a plane on this second part 9123,92 of this pivotal part 91 and this pivot brackets still include a clip sheet 97,92 of these internal tooth intermediate plates 94 and this pivot brackets then still include a clip sheet 97, an one oily sheet 98 and a stator 99, wherein the edge-perpendicular of these clip sheets 97 is provided with a location division 971, and pivoting hole 923 1 sides of this pivot brackets 92 are provided with a locating hole 927 that matches with these location divisions 971, make location division 971 be installed on the locating hole 927, make these clip sheets 97 be installed on the dual-side of pivoting hole 923 respectively, again, these stator 99 inner edges are provided with the orle 991 that matches with the plane of second rotation prevention portion 9127, order is installed on this plane by this orle 991, reaches the positioning action of this stator 99.

In this embodiment, see also Figure 12 again, shown in Figure 13, still include at least one breach type taper elastomeric pad 81 between these internal tooth intermediate plates 94, one sleeve pipe 82 and a flat shim 83, wherein respectively this breach type taper elastomeric pad 81 roughly surrounds into one along a hand of spiral and does not seal spiral ring, and form a breach 181 that defines by its two ends, these breach type taper elastomeric pads 81 are from interior radial outer diameter direction inclination and form a tapering, so that it can bear bigger compressive force, and these breach type taper elastomeric pads 81 are to provide axial elastic force to each element that is located on the part 912, and make it mutual elasticity near, can cooperate with tying means 93 by locking part 913, and adjust the size of this elastic force, and then control the pivot tightness of 91 of this pivot brackets 92 and this pivotal parts; When this tying means 93 screws in, these breach type taper elastomeric pads 81 are pushed, axle each element on the part 912 thereupon the pushing that is subjected to breach type taper elastomeric pad 81 and near, the contact friction of each element is increased, and then the pivotal resistance increase of this

pivot brackets

92 and 91 of this pivotal parts, relatively, when this tying means 93 screws out, these breach type taper elastomeric pads 81 loosen, so the pivotal resistance that this pivot brackets 92 and this pivotal part are 91 reduces.

In this embodiment, see also Figure 12, shown in Figure 13 again, the installation portion 911 of this pivotal part 91 is provided with at least one installing hole 9111, and order is installed on this pivotal part 91 on the main frame of freshwater mussel formula electronic installation by this installing hole 9111.

In this embodiment, see also Figure 12, shown in Figure 13 again, these 913 surfaces, locking part are provided with screw thread, and this tying means 93 can be one with the nut of this threads engaged, make this tying means 93 screw togather and be locked on this locking part 913.

In this embodiment, see also Figure 12, shown in Figure 13 again, the installation portion 921 of this pivot brackets 92 is provided with at least one installing hole 9211, and order is installed on this pivot brackets 92 on the screen of freshwater mussel formula electronic installation by this installing hole 9211.

Claims

1, a kind of pivot hinge, it is characterized in that: it includes:

One pivotal part, this pivotal part one end are provided with an installation portion that can be installed on freshwater mussel formula electronic device host, and end then is provided with a part in addition, and this part end has a locking part;

One pivot brackets, this pivot brackets one end vertically are provided with an installation portion that can be installed on freshwater mussel formula electronic installation screen, and end then is provided with a pivot that is rotatably mounted in the axle part of this pivotal part in addition changes the hole;

One tying means;

At least one internal tooth intermediate plate, it is located between pivot brackets, the tying means, and these internal tooth intermediate plate inner edges have several internal tooths radially towards the center;

This pivot brackets, these internal tooth intermediate plates are installed on this pivotal part in regular turn, see through the locking part that this tying means is locked in this pivotal part end, are combined to form a pivot hinge.

2, according to the described a kind of pivot hinge of claim 1, it is characterized in that: include a stator, an oily sheet and a clip sheet between described pivotal part and pivot brackets, then include a clip sheet, an oily sheet and a stator between these internal tooth intermediate plates and this pivot brackets, wherein the edge-perpendicular of these clip sheets is provided with a location division, and pivoting hole one side of this pivot brackets is provided with a locating hole that matches with these location divisions, the location division is installed on the locating hole, and these clip sheets are installed on the dual-side of pivoting hole respectively.

3, according to the described a kind of pivot hinge of claim 1, it is characterized in that: still include at least one breach type taper elastomeric pad between the described internal tooth intermediate plate, one sleeve pipe and a flat shim, respectively this breach type taper elastomeric pad roughly surrounds into one along a hand of spiral and does not seal spiral ring, and form a breach that defines by its two ends, these breach type taper elastomeric pads are from interior radial outer diameter direction inclination and form a tapering, so that it can bear bigger compressive force, and these breach type taper elastomeric pads are to provide axial elastic force to each element that is located on the part, and make it mutual elasticity near, by cooperating of locking part and tying means, and adjust the size of this elastic force, and then control the pivot tightness between this pivot brackets and this pivotal part.

4, according to the described a kind of pivot hinge of claim 1, it is characterized in that: the installation portion of described pivotal part is provided with at least one installing hole, by this installing hole this pivotal part is installed on the main frame of freshwater mussel formula electronic installation.

5, according to the described a kind of pivot hinge of claim 1, it is characterized in that: surface, described locking part is provided with screw thread, and tying means can be one with the nut of this threads engaged, make this tying means can screw togather on this locking part of locking.

6, according to the described a kind of pivot hinge of claim 1, it is characterized in that: the installation portion of described pivot brackets is provided with at least one installing hole, by this installing hole this pivot brackets is installed on the screen of freshwater mussel formula electronic installation.

7, according to the described a kind of pivot hinge of claim 1, it is characterized in that: described axle part is provided with a rotation prevention portion, this rotation prevention portion has a plane, include a stator and an oily sheet between this pivotal part and this pivot brackets, then include an oily sheet and a stator between these internal tooth intermediate plates and this pivot brackets, these stator inner edges are provided with the orle that matches with the plane of rotation prevention portion, are installed on this plane by this orle, reach the positioning action of these stators.

8, according to the described a kind of pivot hinge of claim 1, it is characterized in that: described axle part is provided with a rotation prevention portion, this rotation prevention portion has a plane, include a stator between this pivotal part and this pivot brackets, an at least one oily sheet and a clip sheet, then still include a clip sheet between these internal tooth intermediate plates and this pivot brackets, an at least one oily sheet and a flat shim, the edge-perpendicular of these clip sheets is provided with a location division, pivoting hole one side of this pivot brackets is provided with a locating hole that matches with these location divisions, make the location division be installed on the locating hole, make these clip sheets be installed on the dual-side of pivoting hole respectively, and these stator inner edges are provided with the orle that matches with the plane of rotation prevention portion, be installed on this plane by this orle, reach the positioning action of these stators.

9, according to the described a kind of pivot hinge of claim 1, it is characterized in that: described freshwater mussel formula electronic installation can be a notebook computer.

10, a kind of pivot hinge is characterized in that: include:

One pivotal part, this pivotal part are provided with a part, and this part is provided with the rotation prevention portion on a plane, and this part end has a locking part;

One location support, this locating support one end is provided with an installation portion that can be installed on freshwater mussel formula electronic device host, end then vertically is provided with a registration arm in addition, this registration arm end is provided with the spline hole of the rotation prevention portion that can be placed in this part, when making the spline borehole jack on rotation prevention portion, this locating support can be located and can't be rotated;

One pivot brackets, this pivot brackets one end vertically are provided with an installation portion that can be installed on freshwater mussel formula electronic installation screen, and end then is provided with a pivoting hole that is rotatably mounted in the axle part of this pivotal part in addition;

One tying means;

Locating support, pivot brackets, each internal tooth intermediate plate are installed on this pivotal part in regular turn, see through the locking part that this tying means is locked in this pivotal part end, are combined to form a pivot hinge.

11, according to the described a kind of pivot hinge of claim 10, it is characterized in that: include a sleeve pipe between described locating support and this pivot brackets, at least one internal tooth intermediate plate, one stator, an one oily sheet and a clip sheet, then still include a clip sheet between these internal tooth intermediate plates and this pivot brackets, an one oily sheet and a stator, wherein the edge-perpendicular of these clip sheets is provided with a location division, and pivoting hole one side of this pivot brackets pivoted arm is provided with a locating hole that matches with these location divisions, make the location division be installed on the locating hole, make these clip sheets be installed on the dual-side of pivoting hole respectively, these stator inner edges are provided with the orle that matches with the plane of rotation prevention portion, be installed on this plane by this orle, reach the positioning action of these stators.

12, according to the described a kind of pivot hinge of claim 10, it is characterized in that: include at least one breach type taper elastomeric pad between the described internal tooth intermediate plate, one sleeve pipe and a flat shim, wherein respectively this breach type taper elastomeric pad roughly surrounds into one along a hand of spiral and does not seal spiral ring, and form a breach that defines by its two ends, these breach type taper elastomeric pads are from interior radial outer diameter direction inclination and form a tapering, so that it can bear bigger compressive force, and these breach type taper elastomeric pads are to provide axial elastic force to each element that is located on the part, and make it mutual elasticity near, can cooperate with tying means by the locking part, and adjust the size of this elastic force, and then control the pivot tightness between this pivot brackets and this locating support.

13, according to the described a kind of pivot hinge of claim 10, it is characterized in that: the installation portion of described locating support is provided with at least one installing hole, by this installing hole this locating support is installed on the main frame of freshwater mussel formula electronic installation.

14, according to the described a kind of pivot hinge of claim 10, it is characterized in that: surface, described locking part is provided with screw thread, and this tying means can be one with the nut of this threads engaged, make this tying means screw togather and be locked on this locking part.

15, according to the described a kind of pivot hinge of claim 10, it is characterized in that: the installation portion of described pivot brackets is provided with at least one installing hole, by this installing hole this pivot brackets is installed on the screen of freshwater mussel formula electronic installation.

16, according to the described a kind of pivot hinge of claim 10, it is characterized in that: described freshwater mussel formula electronic installation can be a notebook computer.

17, a kind of pivot hinge, it is characterized in that: it includes:

One tying means;

At least one internal tooth intermediate plate, it is located between pivot brackets, the tying means, and these internal tooth intermediate plate inner edges have a plurality of internal tooths radially towards the center;

18, according to the described a kind of pivot hinge of claim 17, it is characterized in that: described axle part is provided with one first part and one second part, this first part external diameter is greater than second part, first rotation prevention portion that has a plane on this first part, be arranged with a C shape stator and a torsionspring on this first part, when making C shape stator be installed on this first part by the plane of this first part, can locate and not rotate, two ends of this torsionspring stretch out, wherein an end is embedded on the breach of this C shape stator, terminal in addition then being sticked on the projection of this pivot brackets, elastic force by this torsionspring, offset the resistance of this screen of upset, the user can pull open this screen more smoothly.

19, according to the described a kind of pivot hinge of claim 17, it is characterized in that: second rotation prevention portion that has a plane on described second part, include a clip sheet between this pivotal part and this pivot brackets, then include a clip sheet between these internal tooth intermediate plates and this pivot brackets, an one oily sheet and a stator, wherein the edge-perpendicular of these clip sheets is provided with a location division, and pivoting hole one side of this pivot brackets is provided with a locating hole that matches with these location divisions, make the location division be installed on the locating hole, make these clip sheets be installed on the dual-side of pivoting hole respectively, this stator inner edge is provided with the orle that matches with the plane of second rotation prevention portion, be installed on this plane by this orle, reach the positioning action of this stator.

20, according to the described a kind of pivot hinge of claim 17, it is characterized in that: still include at least one breach type taper elastomeric pad between the described internal tooth intermediate plate, one sleeve pipe and a flat shim, respectively this breach type taper elastomeric pad roughly surrounds into one along a hand of spiral and does not seal spiral ring, and form a breach that defines by its two ends, these breach type taper elastomeric pads are from interior radial outer diameter direction inclination and form a tapering, so that it can bear bigger compressive force, and these breach type taper elastomeric pads are to provide axial elastic force to each element that is located on the part, and make it mutual elasticity near, can cooperate with tying means by the locking part, and adjust the size of this elastic force, and then control the pivot tightness between this pivot brackets and this locating support.

21, according to the described a kind of pivot hinge of claim 17, it is characterized in that: the installation portion of described pivotal part is provided with at least one installing hole, by this installing hole this pivotal part is installed on the main frame of freshwater mussel formula electronic installation.

22, according to the described a kind of pivot hinge of claim 17, it is characterized in that: surface, described locking part is provided with screw thread, and this tying means can be one with the nut of this threads engaged, make this tying means screw togather and be locked on this locking part.

23, according to the described a kind of pivot hinge of claim 17, it is characterized in that: the installation portion of described pivot brackets is provided with at least one installing hole, by this installing hole this pivot brackets is installed on the screen of freshwater mussel formula electronic installation.

24, according to the described a kind of pivot hinge of claim 17, it is characterized in that: described freshwater mussel formula electronic installation can be a notebook computer.