CN2706619Y

CN2706619Y - Hinge structure

Info

Publication number: CN2706619Y
Application number: CN 200420047386
Authority: CN
Inventors: 黄金发; 罗浦
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2004-06-17
Filing date: 2004-06-17
Publication date: 2005-06-29
Anticipated expiration: 2014-06-17

Abstract

The utility model provides a hinge structure which is used for connecting the body of a folding mobile communication device and the cover body of the folding mobile communication device. The utility model comprises a first cam piece, two cylinders, a second cam piece, an elastic element, a housing and a longitudinal shaft, wherein, the first cam piece is provided with a polygonal profile surface and a center hole, and the profile surface comprises two lug bosses; the two lug bosses comprise two semicircular convex parts; the second cam piece comprises two cam surfaces and a center hole, and each cam surface continuously forms an escarpment surface, a top, and an inclined surface; a concave valley is arranged between the two cam surfaces; the cylinders are arranged in the semicircular concave part of the first cam piece and are matched with the concave valley of the second cam piece and the cam surfaces. In the opening and closing course of the utility model, the cylinders and the cam surfaces are in rolling friction. The utility model has the advantages of small wearing, long service life, convenient process, convenient production, and convenient maintenance.

Description

Hinge structure

[technical field]

The utility model is about a kind of hinge structure, especially about a kind of hinge structure that is used for folding type mobile communication device.

[background technique]

Along with developing rapidly of the wireless communication technique and the information processing technology, mobile phone, PDA portable electron devices such as (PDA Personal Digital Assistant) make the Consumer can enjoy all facilities that high-tech brings whenever and wherever possible, and wherein folding type mobile communication device extensively gets consumer reception because of the exquisite novelty of its structure.

Folding type mobile communication device is used hinge structure and is connected its body and lid, a kind of existing hinge structure discloses as disclosed Chinese CN1383309A patent application on December 4th, 2002, see also Fig. 1, this hinge structure comprises: a polygonal shell 200; Embed the elastic device 300 in the shell; One rotating cam bar 400, provide an insertion rod 401 at the one end, it embeds in the elastic device 300 in close-connected mode, and be not comprised in the shell 200 revolvably, the camming surface 402 that has positioned opposite at its other end, each camming surface 402 is made of an escarpmetnt a, a top b and a plane of inclination c, comprises a recess 403 between two camming surfaces 402; One bar 500, it passes in rotating cam bar 400, elastic device 300 and the shell 200 successively, end at bar 500 provides a stepped recess 504, with a snap ring 203 its buckle is got loose from shell 200 preventing, is provided with articulated element 501 at its other end; One driven lug boss 503 is arranged on the outer surface of bar 500 and in abutting connection with articulated element 501, it cooperates with the camming surface 402 of rotating cam bar 400.

When the driven lug boss 503 of bar 500 was positioned at the recess 403 of rotating cam bar 400, folding type mobile communication device was a closed condition.When opening lid, the recess of the driven lug boss 503 spinning cam levers 400 of bar 500 moves to top b, and the recess 403 that enters cam lever 400 once more by top b locks then.But, in the automatic moving process of the relative body of lid, cam lever 400 is mutual sliding friction structure with driven lug boss 503, because the resistance of sliding friction is big, therefore cause the mutual wearing and tearing of cam lever 400 and driven lug boss 503 easily, thus the working life of reducing hinge structure.In addition, the bar of this hinge structure 500 is made integral body with articulated element 501, makes this modular construction complexity, is not easy to make processing, in case and lug boss 503 wearing and tearing just need integral replacing, thereby cause unnecessary waste.

At the problems referred to above, provide a kind of automatic moving process cam wearing and tearing less, make and change that hinge structure is real in necessary easily.

[model utility content]

A purpose of the present utility model is to provide a kind of automatic moving process cam wearing and tearing less hinge structure.

Another purpose of the present utility model is to provide a kind of manufacturing and changes hinge structure easily.

To achieve these goals, the utility model provides a kind of hinge structure, can be used in the folding type mobile communication device, it comprises: first cam member that can not be rotatably assorted with body, second cam member, an elastic element, one and the lid shell and a longitudinal shaft that can not be rotatably assorted, it is characterized in that: this first cam member has a contoured surface and a center hole, described contoured surface comprises two boss, and two boss are provided with two half-round recessed; This second cam member places in the described shell, slide relative in the enclosure, and it comprises two camming surfaces and a center hole, formation one escarpmetnt, a top and a plane of inclination that each camming surface is continuous also are provided with a trench between this two camming surface; This elastic element places in the described shell, and does not have a termination of camming surface with second cam member and support; This longitudinal shaft can pass the center hole of shell, elastic element, second cam member and first cam successively; This hinge structure also comprises two cylindrical bodys, and two cylindrical bodys are installed in the half-round recessed of first cam member and cooperate with the trench and the camming surface of second cam member.

Compare existing hinge structure, the lug boss of the utility model hinge structure to be made of one with first cam member in the two cylindrical bodys replacement prior art, this two cylindrical body is embedded in the half-round recessed of first cam member and cooperates with the trench and the camming surface of second cam member, roll between first cam member and second cam member by cylindrical body and to realize the moving process of hinge structure, because rolling frictional resistance is little, therefore can effectively reduce camming surface and cylindrical wearing and tearing, prolong the working life of hinge.In addition, longitudinal shaft is the two-part that separate with first cam member, and is simple in structure, is convenient to processing, makes and changes.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of prior art hinge structure;

Fig. 2 is the three-dimensional exploded view of the utility model hinge structure;

Fig. 3 is the three-dimensional assembly diagram of the utility model hinge structure;

Fig. 4 be the utility model hinge structure when opening transition state along IV-IV line sectional drawing;

When Fig. 5 is the utility model hinge structure full open position along IV-IV line sectional drawing.

[embodiment]

See also Fig. 2, the utility model hinge structure comprises first cam member 1, two cylindrical bodys 2, second cam member 3, an elastic element 4, a shell 5, a longitudinal shaft 6 and a packing ring 7, and wherein cylindrical body 2 is made by metallic material.

First cam member 1 is generally a polygonal cylinder, it has a polygonal end face 11, have a center hole 111 at polygonal end face 11, along vertical polygonal end face 11 directions is a polygon contoured surface 12, have one on the polygonal profile face 12 vertically through the pin-and-hole 121 of two parallel surfaces wherein, this pin-and-hole 121 is used to hold a latch 13, link to each other with two parallel surfaces that run through by pin-and-hole 121 and two boss 14 are arranged perpendicular to polygonal end face 11 directions, this two boss 14 is arranged in parallel and keeps suitable distance, it is provided with two half-round recessed 141, this half-round recessed 141 is used for ccontaining aforementioned cylindrical body 2, and make this cylindrical body 2 protrude in this half-round recessed 141, so that be used with second cam member 3.

Second cam member 3 is passed through injection molded by plastic material, and is generally a hollow cylindrical, and it comprises a center hole 31, two camming surfaces 32, two tangent planes 33 and a trench 34.Continuous formation one escarpmetnt 321, a top 322 and the plane of inclination 323 of two camming surfaces 22 wherein, first cam member 1 cooperated assembling with second cam member 3 after, aforementioned cylindrical body 2 can roll on above-mentioned two camming surfaces 32.Two tangent planes 33 are parallel to each other, and it can cooperate with the inwall of shell 5, and trench 34 vertically runs through this two tangent plane 33.

Elastic element 4 is generally spiral compression spring, can place shell 5, and the one end is replaced the end face of second cam member 3, and the other end withstands the partially enclosed end (not indicating) of shell 5.

The hollow cylinder that shell 5 is normally made by metallic material, it comprises an a part of closed end (not indicating) and an open end (not indicating), and also has two tangent planes 51 as the location, this shell 5 can closely cooperate with the external frame of second cam member 3.In addition, in its partially enclosed end (not indicating) end face, have an axis hole 52 in the heart, so that longitudinal shaft 6 can therefrom pass when assembling.

Longitudinal shaft 6 is a solid cylinder, is made by metallic material, is generally the 45# steel.Have the tangent plane 61 of a suitable length at the one end, the end on tangent plane has a pin-and-hole 62, and this pin-and-hole 62 can cooperate with latch 13 when assembling.The other end at longitudinal shaft 6 has a round boss 63 in addition, and this boss 63 cooperates with packing ring 7, prevents shell 5 wearing and tearing.

See also Fig. 3, during assembling, earlier longitudinal shaft 6 is passed packing ring 7, pass from the axis hole 52 of shell 5 closed ends, then elastic element 4 and second cam member 3 are inserted in an end of longitudinal shaft 6 successively and place in the shell 5, but second cam member 3 is cooperated with shell 5 slide relative ground, but and co-rotation, cylindrical body 2 places respectively in the trench 34 of second cam member 3, first cam member 1 is enclosed within on the axle 6, and pin-and-hole 62,121 is aimed at, at last latch 13 is inserted pin-and-

hole

121 and 62 to fix first cam member 1 and longitudinal shaft 6.Can integral body place folding type mobile communication device after this hinge structure assembling, end in the body (not indicating) of this folding type mobile communication device is opened a shape and the identical hole of first cam member, 1 external frame size shape, first cam member 1 is installed in this hole, because first cam member, 1 external frame is a polygonal, therefore can rotate relative to body (indicating); Equally an end of the lid (indicating) of this folding type mobile communication device open one with and the identical hole of shell 5 external frame size shape, shell 5 is installed in this hole, because of shell 5 has two tangent planes 33 that are used to locate, so it can not rotate relative to lid (indicating).Relatively rotating of the body of folding type mobile communication device (indicate) and lid (indicating) like this, the realization that relatively rotates of first cam member 1 with the shell 5 by hinge structure fully.

When use is equipped with the folding type mobile communication device of this hinge structure, when the lid of giving folding type mobile communication device (indicating) when applying external force, first cam member 1 can produce a thrust, the cylindrical body 2 that promotion is embedded in two boss, 14 first circular depressions 141 of first cam member 1 rolls on second cam member, 3 camming surfaces 32, thereby make second cam member, 3 compression elastic elements 4, and drive shell 5 and lid (not indicating) and rotate together, move into simultaneously in the shell 5.

See also Fig. 4, this hinge structure is in the crossover position in the opening procedure.Before cylindrical body 2 arrives the summit of top 322 or escarpmetnt 321, if putting on the external force of lid (not indicating) removes, then under the elasticity tension of elastic element 4, get back to original state, escarpmetnt 321 can overcome the rotating force of lid (not indicating), so that second its original state of cam member 3 cycle in the opposite direction.So when cylindrical body 2 passes through before the escarpmetnt 321 fully, if remove the external force that puts on lid (indicating), lid (sign) can not be opened.After cylindrical body 2 reaches the summit of top 322 or escarpmetnt 321, enter in the plane of inclination 323, even remove the external force that puts on lid (not indicating), by the elasticity tension of the elastic element 4 of second cam member, 3 one ends and the inclination of plane of inclination 323, cylindrical body 2 can continue to roll along slow plane of inclination 323, thereby lid (not indicating) is opened automatically.

See also Fig. 4 and Fig. 5, after cylindrical body 2 reaches the summit of top 322 or escarpmetnt 321, cylindrical body 2 is 323 continuation rollings along the plane of inclination, certain second cam member 3 and lid (not indicating) are along with rotating together, elastic element 4 is also replied nature gradually, and when promptly arriving the trench 34 of second cam member 3, it stops to roll, trench 34 can keep its stable steady state, full open position promptly shown in Figure 5 of being in.

When the user closes the mobile communications device lid (not indicating) that this hinge structure is installed, second cam member 3 enters shell 5 under external force, and while compression elastic element 4, second cam member 3 drives metal shell 5 and lid (indicating) rotates with the direction opposite with aforementioned opening operation, climbs up slow plane of inclination 323, top 322 and escarpmetnt 321 thereby drive cylindrical body 2.Similar with aforementioned opening operation, when the slow plane of inclination 323 of cylindrical body 2 processes, when top 322 is in escarpmetnt 321, even remove the external force that acts on lid (not indicating), because escarpmetnt 321 and elastic element 4 tension force, lid (not indicating) also can be closed automatically.

In the aforesaid operations using process, cylindrical body 2 rolls between two camming surfaces 32 of the half-round recessed 141 of first cam member 1 and second cam member 1, effectively reduced friction,, can also add oiling agents such as oil or grease between two cams and in the shell 5 for guaranteeing more smooth operation.

The lug boss of the utility model hinge structure to be made of one with first cam member 1 in two cylindrical bodys, the 2 replacement prior aries, this two cylindrical body 2 is embedded in the half-round recessed 141 of first cam member and cooperates with the trench 34 and the camming surface 32 of second cam member 3, roll between first cam member 1 and second cam member 3 by cylindrical body and to realize the moving process of hinge structure, because rolling frictional resistance is little, therefore can effectively reduce camming surface and cylindrical wearing and tearing, prolong the working life of hinge.In addition, longitudinal shaft 6 and first cam member 1 two-part for separating, simple in structure, be convenient to processing, make and change.

Claims

1. hinge structure, be used for connecting the body and the lid of folding type mobile communication device, it comprises: first cam member that can not be rotatably assorted with body, second cam member, an elastic element, one and the lid shell and a longitudinal shaft that can not be rotatably assorted, it is characterized in that: this first cam member has a contoured surface and a center hole, described contoured surface comprises two boss, and two boss are provided with two half-round recessed; This second cam member places in the described shell, slide relative in the enclosure, and it comprises two camming surfaces and a center hole, formation one escarpmetnt, a top and a plane of inclination that each camming surface is continuous also are provided with a trench between this two camming surface; This elastic element places in the described shell, and does not have an end butt of camming surface with second cam member; This longitudinal shaft can pass the center hole of shell, elastic element, second cam member and first cam successively; This hinge structure further comprises two cylindrical bodys, and two cylindrical bodys are installed in the half-round recessed of first cam member and cooperate with the trench and the camming surface of second cam member.

2. hinge structure as claimed in claim 1 is characterized in that: the contoured surface of this first cam member is the polygonal profile face.

3. hinge structure as claimed in claim 2 is characterized in that: this first cam member has a pin-and-hole through its contoured surface.

4. hinge structure as claimed in claim 3 is characterized in that: this hinge structure comprises a latch, and this latch and pin-and-hole closely cooperate.

5. hinge structure as claimed in claim 1 is characterized in that: this shell is the cylinder with two tangent planes.

6. hinge structure as claimed in claim 5 is characterized in that: this shell tool one open end and a part of closed end.

7. hinge structure as claimed in claim 1 is characterized in that: this longitudinal shaft one end tool one tangent plane, this tangent plane can cooperate with the center hole of first cam member.

8. hinge structure as claimed in claim 7 is characterized in that: this longitudinal shaft one end tool one is through the pin-and-hole of described tangent plane, and this pin-and-hole can cooperate with latch.

9. hinge structure as claimed in claim 8 is characterized in that: this longitudinal shaft the other end has a round boss.

10. hinge structure as claimed in claim 9 is characterized in that: this hinge structure also comprises a packing ring, and this packing ring is between the round boss and described shell of described longitudinal shaft.