CN201322039Y

CN201322039Y - Pivot rotary hinge

Info

Publication number: CN201322039Y
Application number: CNU2008201613510U
Authority: CN
Inventors: 孙亮; 王永佳
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2009-10-07
Anticipated expiration: 2018-10-31

Abstract

Disclosed is a pivot rotary hinge, which comprises a press piece, a cylindrical fixed shaft, a fixed gasket, a first spring, a lock catch piece, a lock catch cam, a first insulating body, a follower, a sliding cam, a second spring, a spring gasket and a second insulating body, wherein the fixed gasket, the first spring, the lock catch piece and the lock catch cam are in sequential and penetrating arrangement on the fixed shaft, the first insulating body clads the lock catch piece, and the second insulating body clads the second spring, the sliding cam and the follower. The pivot rotary hinge has the advantage that when the follower slides to the tail end of the sliding cam, the contact area and the friction force between the follower and the sliding cam becomes smaller and the follower rotation becomes more smooth, because the tail end on the rotary cambered surface of the sliding cam engaged with the follower is provided with an excised notch.

Description

Pivot hinge

[technical field]

The utility model relates to a kind of pivot hinge, refers to a kind of pressure spring type pivot hinge especially.

[background technique]

Along with the continuous development of equipment such as mobile phone, PDA, the structural form of this electronic product is ever-changing.But generally, this electronic product roughly can be divided three classes by unfolding mode, and a class is a straight-plate-type, and a class is a sliding cover type, and an other class is a hinge-lid type.

Usually be connected by a pivot hinge between its lid of the electronic product of hinge-lid type and the body, and pivot hinge can be divided into element type, torsional spring type and pressure spring type by its start principle.

Traditional pressure spring type pivot hinge, it generally includes the fixed block that cooperatively interacts successively, the snap close piece that cooperates with fixed block, the snap close cam that cooperates with snap close piece, the follower that cooperates with the snap close cam, the sliding cam that cooperates with follower, is resisted against the spring of sliding cam one end to opposite side from hinge one side.From the other end of spring, be coated on outside spring, sliding cam and the follower, insert a sleeve type insulating body, wherein sleeve type insulating body and follower cooperatively interact, and when the lid of mobile phone is opened or is shut and follower rotate simultaneously.A rotating shaft runs through aforementioned components these elements is serially connected.

With the mobile phone is example, when opening the lid of mobile phone, give the slight active force of mobile phone lid, when the mobile phone lid is opened slightly, because the follower that cooperatively interacts with the mobile phone lid rotates, therefore the sliding cam that is supported by follower under the lid closed state is being compressed the promotion Downward servo spare motion of spring, and drives follower and be rotated further, and the mobile phone lid is opened fully.

Yet, existing this pressure spring type pivot hinge, follower produces rotation by the driving of sliding cam, frictional force between follower and the sliding cam is more little, and then the effect of follower rotation is smooth and easy more, therefore, more smooth and easy for follower is rotated, be necessary the structure of pivot hinge is improved.

[model utility content]

The purpose of this utility model is to provide a kind of rotation pivot hinge smoothly.

For solving aforementioned technical problem, a kind of pivot hinge of the utility model, it comprises a pressing member, a cylindrical stationary axle, is arranged in retaining washer, first spring, snap close piece, snap close cam on this stationary axle successively, is coated on snap close piece outer first insulating body, follower, sliding cam, second spring, compression spring and is coated on second spring and sliding cam and the second outer insulating body of follower.The terminal excision breach that forms of the rotation cambered surface that sliding cam matches with follower.

Compared with prior art, pivot hinge of the present utility model, the terminal excision breach that forms of the rotation cambered surface that its sliding cam matches with follower, when then follower contacts with the sliding cam surface of revolution is terminal, area of contact reduces, and frictional force reduces, and then follower rotates more smooth and easy.

[description of drawings]

Fig. 1 is the three-dimensional combination figure of the utility model pivot hinge.

Fig. 2 is the three-dimensional combination figure of another angle of the utility model pivot hinge.

Fig. 3 is the three-dimensional exploded view of the utility model pivot hinge.

Fig. 4 is the three-dimensional exploded view of another angle of the utility model pivot hinge.

Fig. 5 is the unit assembly drawing of the utility model pivot hinge.

Fig. 6 is the unit assembly drawing of another angle of the utility model pivot hinge.

Fig. 7 is the stereogram of the sliding cam of the utility model pivot hinge.

[embodiment]

See also Fig. 3 and shown in Figure 4, the utility model pivot hinge 1 comprises a pressing member 10, a cylindrical stationary axle 11 from right to left, and right-to-left is arranged in retaining washer 12, snap close piece 14, first spring 15, snap close cam 16 on this stationary axle 11 successively, be coated on snap close piece 14 outer first insulating body 13, follower 17, sliding cam 18, second spring 19, compression spring 20, be coated on second spring 19 and sliding cam 18 and follower 17 outer second insulating body 21 and snap ring 22.

Pressing member 10 comprises a pair of trip 102 that disc press

part

101 and 101 both sides of the edge vertical pressing portions 101 of self-pressing portion extend.

Stationary axle 11 is for roughly cylindrical, its low order end is a flattened rectangular fixing part 111 for one section, from fixing part 111 is left the less axial region of diameter 112, wherein be formed with the diameter ring hooking part 113 more bigger near fixing part 111 1 ends, protrude the lengthwise fin 114 that extends along the stationary axle axis that forms a pair of symmetry at the outer surface away from fixing part 111 1 ends of axial region 112 than axial region 112 at axial region 112.The high order end of stationary axle 11 forms two way draw-in grooves 115,116.

Retaining washer 12 is the rectangle sheet, offers the rectangular aperture 121 suitable with flattened rectangular fixing part 111 width of stationary axle 11 ends in the middle of it, forms two rectangular indentation 122 to central concave respectively from the both sides of retaining washer 12.

First insulating body 13 is an end opening, and the other end has the tube-in-tube structure of bottom surface.Wherein the inwall at sleeve 130 is formed with fixing groove 131, and rectangle first opening 132 of bottom center's formation at sleeve forms two rectangle second openings 133 in first opening, 132 bilateral symmetry.

Snap close piece 14 comprises round sheet base portion 141 and four snap close pin 142 that extend from base portion 141 edge-perpendicular base portions 141, and the end of each snap close pin 142 forms a projection 143.Wherein the center of base portion 141 offers circular perforations 144.

Snap close cam 16 comprises ring matrix 161, and two the first relative projections 162 of outer surface projection to the right formation in matrix 161 form a pair of second relative projection 163 between two first projections 162.Each second projection 163 comprises the contiguous block 1631 that links to each other with matrix 161, and protrudes out terminal guiding block 1632 for tilting from the part front end of contiguous block 1611, and then contiguous block 1631 does not protrude out buckle step 1633 of part formation of guiding block 1632.Form accepting groove 164 between every adjacent two projections 162,163.Protrude out a pair of relative circular arc of formation from the bottom surface of matrix 161 towards projection 162,163 opposite directions (promptly left) and protrude out piece 165.

Follower 17 comprises cylindrical sleeve portion 171, protrude out the circular arc clamping block 172 that piece 165 cooperatively interacts that protrudes out that forms with aforementioned snap close cam 16 from the sleeve part 171 1 side direction right sides, protrude out the auxiliary section 173 of two relative arcuate surface of formation from the opposite side of sleeve part 171 left.Be formed with a lengthwise strip bulge 174 in that the outer surface of two auxiliary sections 173 is outstanding.

Please in conjunction with shown in Figure 7, sliding cam 18 comprises the conical surface 182 that cylindrical sleeve 181 and the two halves that extend to form from sleeve 181 ends are separated left.Be formed centrally circular open 183 in the cylindrical sleeve 181, be recessed to form the essentially rectangular opening 184 that is communicated with circular open 183 to sleeve 181 inwalls from 183 liang of relative positions of circular opening.The engagement portion 185 that to form two surfaces from the barrel spiral of cylindrical sleeve 181 rotation cut-out sleeve wall be arc.185 an arc surface of revolution Bottoming part and form one section excision breach 187 wherein in the engagement portion.Form breach 186 between the conical surface 182 that two halves are separated.

Compression spring 20 is a round sheet, and engaging opening 201 is offered at its center.

Second insulating body 21 is an end opening, and the other end has the sleeve 210 of bottom surface, and the bottom surface of its middle sleeve 210 offers perforation 211, outwards protrudes out from the sidewall of sleeve and forms two relative longitudinal accepting grooves 212.

Snap ring 22 is the lamellar body that forms engaging opening 221 in the middle of the ring.

See also Fig. 1, Fig. 2 and Fig. 5 to shown in Figure 6, when whole pivot hinge 1 assembles, earlier snap ring 22 is sheathed in the draw-in groove 116 of stationary axle 11 ends, then second insulating body 21 is arranged in stationary axle 11 with the opening 211 of bottom surface, then aforementioned snap ring 22 can be posted by the outer surface of second insulating body, 21 bottom surfaces, prevents that second insulating body 21 from coming off from stationary axle 11.Compression spring 10 is arranged in the draw-in groove 115 of stationary axle 11.Second spring 19 is arranged in stationary axle 11, and the one end is resisted against compression spring 20.Assemble sliding cam 18 then, wherein breach 186 correspondences between the rectangular aperture 184 of sliding cam 18 cylindrical sleeves 181 and two conical surfaces 182 are accommodated the lengthwise fin 114 of stationary axle 11.The other end of second spring 19 is accommodated two conical surfaces 182 and is resisted against cylindrical sleeve 181 ends of sliding cam 18.

Follower 17 inserts second insulating body 21 from the right side, wherein the lengthwise stripe shape on 173 surfaces, follower 17 auxiliary sections projection 174 correspondences are contained in the longitudinal accepting groove 212 of second insulating body, 21 inwalls, the end of the auxiliary section 173 of follower 17 and the engagement portion 185 of sliding cam 18 most advanced and sophisticated inconsistent and compress second spring 19.First spring 15 inserts from the right side and is sheathed on the stationary axle 11, and the one end is resisted against the ring hooking part 113 of stationary axle 11.Then snap close cam 16 is placed in outside first spring 15, wherein the clamping block 172 that protrudes out piece 165 and follower 17 of snap close cam 16 is meshing with each other.In the accepting groove 164 between the projection 162,163 of the snap close pin 142 corresponding insertion snap close cams 16 of snap close piece 14.Then retaining washer 12 is assembled in the fixing part 111 of stationary axle 11 ends, wherein the fixing part 111 of stationary axle 11 ends is a flat structure, then rectangular aperture 122 correspondences of retaining washer 12 are accommodated the fixing part 111 of the end of stationary axle 11, can prevent that retaining washer 12 from rotating.Then first insulating body, 13 right-to-lefts are assembled in outside the snap close piece 14, wherein the projection 143 of the snap close pin 142 of snap close piece 14 is sticked in the fixing groove 131 of first insulating body, 13 inwalls.

Pressing member 10 inserts first insulating body 13 from the right side the most at last, and wherein two of pressing member 10 trips 102 pass two second openings 133 of first insulating body, 13 bottom surfaces, and end is resisted against the base portion 141 of snap close piece 14.

When this pivot hinge is installed on mobile phone, PDA or other electronic equipment, with the mobile phone is example, its second insulating body 21 is fixed together with the lid of mobile phone, when the mobile phone lid was in closed state, the auxiliary section 173 of follower 17 compressed the engagement portion 185 of sliding cam 18 and compresses second spring 19.And because

follower

17 and 16 engagements of snap close cam, and snap close cam 16 is held by the snap close pin 142 of snap close piece 14, and snap close piece 14 is fastened in the fixing groove 131 of first insulating body, 13 inwalls, first insulating body 13 is fixed together with mobile phone body, can not rotate, so follower 17 also can't rotate.When opening the mobile phone lid, push pressing member 10, then pressing member 10 is released snap close piece 14 from the fixing groove 131 of first insulating body, 13 inwalls, then snap close cam 16 and snap close piece 14 can rotate, this moment second, spring 19 promoted sliding cam 18 to follower 17 motions and 17 rotations of driving follower, because the strip bulge 174 of follower 17 auxiliary sections 173 cooperates with second insulating body 21, then driving second insulating body 21 rotates, because second insulating body 21 is fixed together with the mobile phone lid, then drives the mobile phone lid and opens.The arc surface of revolution Bottoming part of the engagement portion 185 of matching with follower 17 owing to sliding cam 18 forms one section excision breach 187, when then follower 17 turns to and contacts with the arc surface of revolution of the engagement portion of sliding cam 18 is terminal, surface of contact between the two diminishes, then frictional force between the two also diminishes, the resistance that follower 17 is subjected to is less, can rotate more swimmingly, and then drive second insulating body and drive the rotation of mobile phone lid.

Claims

1. pivot hinge, it comprises pressing member, cylindrical stationary axle, be arranged in retaining washer, first spring, snap close piece, the snap close cam that cooperates with snap close piece on this stationary axle successively, be coated on snap close piece outer first insulating body, the follower that cooperates with the snap close cam, the sliding cam that cooperates with follower, press on second spring of sliding cam and be coated on second spring and sliding cam and follower outward can with follower sleeve shape second insulating body of rotation synchronously; It is characterized in that: sliding cam comprises the arc surface of revolution that matches with follower, an arc surface of revolution Bottoming part and form one section excision breach.

2. pivot hinge as claimed in claim 1 is characterized in that: described sliding cam comprises cylindrical sleeve, and aforementioned arc surface of revolution is the surface that to form two surfaces from the barrel spiral of cylindrical sleeve rotation cut-out sleeve wall be the engagement portion of arc.

3. pivot hinge as claimed in claim 2 is characterized in that: described follower comprises the same portion of cylindrical jacket, protrudes out the auxiliary section of two relative arcuate surface that match with engagement portion sliding cam of formation from a side of sleeve part.

4. pivot hinge as claimed in claim 1 is characterized in that: described stationary axle is provided with draw-in groove, and described pivot hinge also comprises the compression spring between second spring and second insulating body on the draw-in groove that is sheathed on the stationary axle.

5. pivot hinge as claimed in claim 1, it is characterized in that: described pressing member comprises a pair of trip that disc press part and both sides of the edge vertical pressing portion of self-pressing portion extend, first insulating body is an end opening, the other end has the tube-in-tube structure of bottom surface, bottom center at sleeve forms rectangle first opening, form two rectangle second openings in the first opening bilateral symmetry, the trip of pressing member passes second opening and presses on the snap close piece.

6. pivot hinge as claimed in claim 1, it is characterized in that: the aforementioned fixation axle, its the last section is the flattened rectangular fixing part, be connected to the less axial region of diameter with fixing part, wherein be formed with the diameter ring hooking part more bigger near fixing part one end than axial region at axial region, the outer surface away from fixing part one end at axial region protrudes the lengthwise fin along the extension of stationary axle axis that forms a pair of symmetry, and the other end of stationary axle forms two way draw-in grooves.

7. pivot hinge as claimed in claim 1, it is characterized in that: first insulating body is an end opening, the other end has the tube-in-tube structure of bottom surface, wherein the inwall at sleeve is formed with the fixing groove, snap close piece comprises round sheet base portion and four snap close pin that extend from the vertical base portion of base edge, the end of each snap close pin forms a projection, and under the closed state, the projection of the snap close pin end of snap close piece is contained in the fixing groove of the first insulating body inwall.

8. pivot hinge as claimed in claim 7 is characterized in that: the snap close cam comprises the ring matrix, stretches to a pleurapophysis in the outer surface of matrix to form two first relative projections, forms a pair of second relative projection between two first projections; Each second projection comprises the contiguous block that links to each other with matrix, and protrudes out the terminal guiding block of arc that is from the part front end of contiguous block, and then contiguous block does not protrude out buckle step of part formation of guiding block; Form accepting groove between every adjacent two projections, the snap close pin of aforementioned snap close piece is contained in the accepting groove between every adjacent two projections of snap close cam.

9. pivot hinge as claimed in claim 1 is characterized in that: be formed with projection at the follower outer surface, be formed with accepting groove at the second insulating body inwall, the protruding correspondence of follower is contained in the accepting groove of the second insulating body inwall.

10. pivot hinge as claimed in claim 6, it is characterized in that: sliding cam comprises the conical surface that cylindrical sleeve and the two halves that extend to form from barrel end are separated, form breach between two conical surfaces, be formed centrally circular open in the cylindrical sleeve, be recessed to form the rectangular aperture that is communicated with circular open from circular opening two relative positions to sleeve wall, the breach correspondence between described rectangular aperture and two conical surfaces is accommodated the lengthwise fin of stationary axle.