CN201041192Y

CN201041192Y - Pivotal device

Info

Publication number: CN201041192Y
Application number: CNU2007200378203U
Authority: CN
Inventors: 蔡旻锡
Original assignee: ANJIE INFORMATION TECHNOLOGY (SUZHOU) Co Ltd
Current assignee: ANJIE INFORMATION TECHNOLOGY (SUZHOU) Co Ltd
Priority date: 2007-05-21
Filing date: 2007-05-21
Publication date: 2008-03-26
Anticipated expiration: 2017-05-21

Abstract

The utility model provides a hinging device which comprises a rotating part, a sleeve part, and a base seat. The rotating part is provided with a cylindrical rotating axle, a through hole of which the diameter is matched with the rotating axle is arranged on the sleeve part, the sleeve part is nested on the rotating axle and is arranged oppositely to the rotating axle in a rotating way, a through hole of which the shape is matched with the cross section of the sleeve part is arranged on the base seat, the sleeve part is inserted in the through hole, a ring plate is nested on the rotating axle, a plurality of convex blocks are arranged at the edge of the outer side of the ring plate, the ring plate is positioned in the through hole and all the convex blocks are held against the inner side wall of the through hole, because the ring plate is adopted, interfering force exists between the ring plate and the through hole, to effectively prevent the distortion of the sleeve part, the ring plate limits the sloshing of the rotating axle, and therefore, the minute displacement (sloshing) opposite to the base seat can not occur during the rotation process of the rotating part, so that the sloshing phenomenon of the screen of a notebook computer or a DVD player can not occur after a plurality of times of opening and closing.

Description

Pivot device

Technical field

The utility model relates to a kind of pivot device, relates in particular to a kind of portable DVD player, VCD, notebook computer or clamshell handset etc. of being used in and has pivot device on the open-close type display device, has to open and the function of closed display screen.

Background technique

The equipment of the open-close type display screen of Shi Yonging in the market, as portable DVD player, VCD, notebook computer or clamshell handset etc., its display screen can be closed and the unlatching majority all be pivot device to be set by the both sides between display screen and body (keyboard), this pivot device can make display screen to rotate to the angle that the operator is satisfied with respect to body (keyboard).

Traditional pivot device generally comprises: pedestal, this pedestal is fixedly installed on the body (keyboard), pivot and external member, one side of pivot is fixedly installed on the display screen, be arranged with external member on the opposite side of pivot, external member is fixedly mounted on the inside of fixed base, and pivot rotates with respect to external member, thereby makes display screen to overturn with respect to body (keyboard).

The shortcoming of this design is: external member is inserted in the pedestal, between external member and the pedestal for fixedlying connected, and be between pivot and the external member to be provided with rotationally, the needed power of supporting display screen when the frictional force between pivot and the external member is the folding display screen and when using, this frictional force can not be too little, if the frictional force between pivot and the external member is too small, after opening, display screen can't stop so arbitrarily angled.So when the folding display screen or when allowing display screen keep an angle, external member all is main forced element, and the size of external member is smaller, the stress ratio that the pivot that bears applies is bigger, so after use surpassing certain time limit (such as the folding screen more than 20,000 times), deformation takes place in external member possibly, make external member not firm with combining of pedestal, and and the rotation friction between the pivot diminishes, during rotating screen, external member may be relatively and pedestal small rocking taken place, make the screen moving axis that just may rotate that little rocking and unsettled situation take place, under the serious situation, even can make screen can't stably remain on the angle, influence user's proper functioning.

Summary of the invention

The purpose of this utility model is exactly at the problems referred to above, and a kind of pivot device is provided, and it can use for a long time and be unlikely to take place that above-mentioned screen rocks and unsettled situation.

In order to achieve the above object, the technical solution adopted in the utility model is: a kind of pivot device, it comprises rotating component, at least one external member, pedestal, described rotating component has rotatingshaft, has the through hole that the diameter of diameter and described rotatingshaft is complementary on the described external member, described external member is set on the rotatingshaft and with rotatingshaft and is provided with rotatably, has extension part on the described external member, has the through hole that the cross section of shape and external member is complementary on the described pedestal, described external member is inserted in the described through hole, on described rotatingshaft, also be arranged with ring plate, ring plate and rotatingshaft are provided with rotatably, the outer ledge place of described ring plate has a plurality of projections, the width of described ring plate is greater than the external diameter of described through hole, and the madial wall that described ring plate is positioned at described through hole and described projection and through hole offsets.

Owing to adopted technique scheme, made to the utlity model has following advantage:

Added ring plate in traditional design, after installing, a plurality of projections on the ring plate outer ledge and the madial wall of through hole offset, and make can not be in contact with one another between the top (part that promptly has through hole) of external member and the through hole; In addition, ring plate is set on the rotatingshaft, ring plate has limited motion (rocking) scope of rotatingshaft, make rotatingshaft in movement process, diminish to the stress that external member applies, reduce the possibility of external member deformation, test of the present utility model has been shown, adopted equipment of the present utility model (such as notebook computer) after screen folding 20,000 times, still folding stability preferably can be kept, shaking phenomenon can be do not produced.

Description of drawings

Accompanying drawing 1 is a decomposing schematic representation of the present utility model;

Accompanying drawing 2 is the partial sectional view of the utility model after installing;

Accompanying drawing 3 is that external member in the accompanying drawing 1 is along the cutaway view Amplified image of A-A direction;

Accompanying drawing 4 is the B district enlarged view in the accompanying drawing 2.

Accompanying drawing 5 is that pedestal in the accompanying drawing 1 is along the broken section enlarged view of C-C direction;

Wherein: 1, rotating component; 2, external member; 3, pedestal; 4, ring plate; 11, rotatingshaft; 21, extension part; 22, through hole; 31, through hole; 41, projection.

Embodiment

Below in conjunction with accompanying drawing principle of the present utility model and structure are discussed specifically.

Meaning as shown in Figure 1, a kind of pivot device, it comprises rotating component 1, two external members 2, pedestal 3, and rotating component 1 is fixedly connected with screen, and pedestal 3 is fixedly connected with apparatus body (keyboard).Rotating component 1 has cylindrical rotatingshaft 11, offers the through hole 22 that diameter and described rotatingshaft 11 are complementary on the described external member 2.

Described external member 2 is set on the rotatingshaft 11 and with rotatingshaft 11 and is provided with rotatably, the madial wall of external member 2 fits tightly mutually with rotatingshaft 11, so that rotatingshaft 11 when rotating with respect to external member 2, has size to fit and frictional force uniformly between rotatingshaft 11 and the external member 2.

Has extension part 21 on the described external member 2, accompanying drawing 3 has provided the schematic representation of the cross section of external member 2, as can be seen, the cross section of external member 2 roughly is 9 fonts, have the through hole 31 (seeing attached illustrated in Figure 5) that the cross section of shape and external member 2 is complementary on the described pedestal 3, the effect of extension part 21 is in order to make external member 2 and pedestal 3 to block mutually.Described external member 2 is inserted in the described through hole 31, and extension part 21 is inserted in the bottom of through hole 31 and blocks mutually with the madial wall of through hole 31, makes external member 2 and pedestal 3 be fixedly connected.

On described rotatingshaft 11, also be arranged with ring plate 4, ring plate 4 is provided with rotatably with rotatingshaft 11, the outer ledge place of described ring plate 4 has a plurality of projections 41 (seeing attached illustrated in Figure 4), the width of ring plate 4 is greater than the external diameter of through hole 22, the width of so-called here ring plate 4 refers to the maximum distance of point-to-point transmission on ring plate 4 outer ledges, and the external diameter of through hole 22 refers to the diameter d (seeing attached illustrated in Figure 3) of the excircle of through hole 22, adopting this design is in order to make behind ring plate 4 and external member 2 insertion through holes 31, ring plate 4 offsets with the inwall of through hole 31, and the top of external member 2 (that is to say the part with through hole 22) do not contact with the madial wall of through hole 31, in the present embodiment, projection 41 is triangular tooth, be evenly distributed on the excircle of ring plate (seeing attached illustrated in Figure 4), can certainly be set to other shapes by projection, as long as make the width of ring plate 4 greater than the external diameter of through hole 22.

See attached illustrated in Figure 2, when mounted, external member 2 and ring plate 4 all are set on the rotatingshaft 11, external member 2 and ring plate 4 all are positioned at through hole 31, projection 41 on the ring plate 4 offsets with the madial wall of through hole 31, in the present embodiment, a side of ring plate 4 contacts with external member 2, and another side contacts with rotating component 1; Certainly, also can adopt other setting method, such as ring plate 4 is arranged between two external members 2.

After installing, on rotatingshaft 11, be arranged with successively: external member 2, external member 2 and ring plate 4, external member 2 and ring plate 4 all are positioned at through hole 31, a plurality of projections 41 on ring plate 4 outer ledges offset with through hole 31, position relative fixed between ring plate 4 and the pedestal 3, the top of external member 2 (part that promptly has through hole 22) does not contact with the madial wall of through hole 31, the bottom of external member 2 (being extension part 21) contacts with the lower inside wall of through hole 31 and blocks mutually with the madial wall of through hole 31, makes position relative fixed between external member 2 and the pedestal 3.Can relatively rotate between rotatingshaft 11 and the external member 2.

The foregoing description only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of being done according to the utility model spirit change or modify, and all should be encompassed in the protection domain of the present utility model.

Claims

1. pivot device, it comprises rotating component (1), at least one external member (2), pedestal (3), described rotating component (1) has rotatingshaft (11), has the through hole (22) that the diameter of diameter and described rotatingshaft (11) is complementary on the described external member (2), described external member (2) is set in rotatingshaft (11) and goes up and be provided with rotatably with rotatingshaft (11), has extension part (21) on the described external member (2), has the through hole (31) that the cross section of shape and external member (2) is complementary on the described pedestal (3), described external member (2) is inserted in the described through hole (31), it is characterized in that: on described rotatingshaft (11), also be arranged with ring plate (4), ring plate (4) is provided with rotatably with rotatingshaft (11), the outer ledge place of described ring plate (4) has a plurality of projections (41), the width of described ring plate (4) is greater than the external diameter of described through hole (22), and the madial wall that described ring plate (4) is positioned at described through hole (31) and described projection (41) and through hole (31) offsets.

2. pivot device as claimed in claim 1 is characterized in that: described external member (2) has two.

3. pivot device as claimed in claim 2 is characterized in that: described ring plate (4) is positioned between two external members (2).

4. pivot device as claimed in claim 2 is characterized in that: a side of described ring plate (4) contacts with an external member (2), and another side of ring plate (4) contacts with rotating component (1).

5. pivot device as claimed in claim 1 is characterized in that: the cross section of described external member (2) is 9 fonts.