CN2921425Y

CN2921425Y - Multi-pawl automatic locking pivot

Info

Publication number: CN2921425Y
Application number: CN 200620124365
Authority: CN
Inventors: 陈嘉辉; 戴日南
Original assignee: Lianhong Technology Co Ltd
Current assignee: Lianhong Technology Co Ltd
Priority date: 2006-07-10
Filing date: 2006-07-10
Publication date: 2007-07-11
Anticipated expiration: 2016-07-10

Abstract

A multi-pawl automatic locking pivot forms at least three concaves with different inside/outside positions and different angles over the contact surface of the fixed concave wheel, as well as at least three pawls over the contact surface of the rotary cam corresponding to the three concaves. Automatic locking occurs when the rotary cam is rotated to a certain degree with the three pawls thereof falling into the three concaves of the fixed concave wheel. When the rotary cam rotates relative to the fixed concave wheel, surface contact occurs over the surface of the fixed wheel through the at least three pawls. Meanwhile, a chock block cam is arranged between the fixed cam and the socket to distribute the force, thereby obtaining steady and fixed support between the rotary cam and the fixed concave wheel, and easily avoiding the damage. Additionally, the opening degree of the pivot can be limited through the chock block effect of the fringe of the anti-block cam acting upon the base.

Description

The automatic sealed pivot of multiple-jaw type

Technical field

The utility model refers to a kind of automatic sealed pivot of multiple-jaw type that has sealed automatically (autolock) function of at least three dogs between anchor wheel and rotating cam surface of contact especially about a kind of pivot.

Background technique

In the folding electronic product, for example mostly notebook computer is to utilize a body and a display screen that may be folded on the body to constitute basically.Folder function is wherein reached by the pivot (hinge) that connects between the two.

Because the miniaturization of notebook computer and the requirement of wireless telecommunications, and the requirement of saving manufacture cost and size, display screen closes (latch) device and often is required to save being equivalent on the body employed door bolt, so that in the display screen leading edge a plurality of wireless receivers are installed.Save door bolt at notebook computer and attach together and put, being commonly referred to as does not have door bolt and attaches together and put (latchless) notebook computer.They also have a benefit, are can reduce door bolt to attach together damage and the maintenance requirements of putting.

Do not attach together under the situation of putting yet have door bolt, sealed automatically (autolock) must be provided on pivot function, make display screen and body amount to Shi Buhui and open naturally, but can on any angle, locate during the display screen unlatching at this.

This kind has the pivot of auto-closing function, in known techniques, for example in the preceding case of the novel patent announcement M254878 of the TaiWan, China on January 1st, 2005 " pivot device of tool locating function ", be with a positioning block that does not together rotate with the pivot rotating shaft and one and the location piece that together rotates of pivot rotating shaft constituted, and the surface of contact of positioning block and location piece is provided with a pair of concavo-convex snap-in structure that varies in size, to reach the auto-closing function.In order to prevent that the medium and small salient point of snap-in structure from falling to sinking in the big recess when rotated, the distance that must reach the little recess arrangement one-tenth and the center of circle does not greatly wait.

Because pivot must provide the location can not fall to support the screen that is started on unspecified angle, then the surface of contact of location piece and positioning block has great frictional force, and the snap-in structure that two known salient points constitute, contacting of two salient points and being in line property of surface of contact, cause force localization, easily cause the damage of location piece and positioning block, influence the working life of pivot, remain to be improved.

The model utility content

Because the technical disadvantages of preceding case, the utility model purpose is, provides a kind of multiple-jaw type automatic sealed pivot, to overcome the defective of above-mentioned conventional art, reach strength and disperse, making has more stable fixed support between rotating cam and anchor wheel, and does not easily damage.

Technical solutions of the utility model: the automatic sealed pivot of a kind of multiple-jaw type, be positioned between the display screen and body of folding electron product, it is characterized in that, comprising:

One supporting frame is fixed on the display screen place of folding electron product;

One rotating shaft, have one with the joint and an axial region of supporting frame winding;

One base is fixed on the body place of folding electron product, has a circular hole that passes for above-mentioned rotating shaft axial region;

One location device is positioned on the axial region of rotating shaft, includes the rotating cam that an anchor wheel and that is fixed on the base side is rotated by rotating shaft; Have on the recessed surface of contact of taking turns of said fixing three or more a plurality of in external position difference and the different depression of angle, and on the surface of contact of above-mentioned rotating cam relatively the recessed recess of taking turns of said fixing have three or more a plurality of fall into above-mentioned be recessed to form sealed automatically or with the recessed wheel tread of said fixing between the dog that contacts of formation face; And

One is used for providing at the axial above-mentioned positioning device of rotating shaft the bouncing plate group of compressing power, is positioned on the axial region of rotating shaft.

Wherein, having one between base and positioning device can together rotate with rotating shaft and in order to limit the backstop cam of supporting frame opening angle; This backstop cam outer rim has a lip part, and this lip part one side is kept out contact mutually with the block under the base circular hole.

Wherein, anchor wheel has a circular hole that passes for the rotating shaft axial region, and root edge has a folding hook part, and this folding hook part is stretched in the open-work below the base circular hole.

Wherein, the both sides of each depression of anchor wheel have slope.

Wherein, the both sides of each dog of rotating cam have slope.

Wherein, the axial region end of rotating shaft has the screw section, and is screwed with a nut.

Wherein, have before the nut one with the locating washer of bouncing plate group one side contacts.

The utility model beneficial effect: pass through said structure, form the contact (form a face) of face between the anchor wheel tread at 3, reached the strength dispersion, making has more stable fixed support between rotating cam and anchor wheel, and not fragile, the linearity contact of more known two salient points greatly improves.

Below, structure characteristic of the present utility model will be described in detail according to the embodiment shown in the drawing and use effect.

Description of drawings

Fig. 1 is an exploded view of the present utility model,

Fig. 2 is a constitutional diagram of the present utility model,

Fig. 3 is a combination section of the present utility model,

Fig. 4 is the floor map of the utility model base and backstop cam,

Fig. 5 is the action schematic representation of the utility model backstop cam,

Fig. 6 is the enlargement decomposition of the utility model positioning device.

Embodiment

See also Fig. 1 to Fig. 3, pivot of the present utility model has a base 10, and it is fixed on the body of folding electron product, and a supporting frame 20, and it is fixed on the display screen of folding electron product.One rotating shaft 30 has the joint 31 that is connected with supporting frame 20, the axial region 33 that a breast wheel 32 and passes base 10.Axial region 33 is cut into the plane up and down.

Base 10 has a circular hole 11 and passes for rotating shaft 30 axial regions 33, and the positioning device 60 and the location pad 71 that on axial region 33, also are provided with multi-disc pad 40, bouncing plate group 50, a backstop cam 80, are constituted by anchor wheel 61 and one rotating cam 62, and screw togather and all above-mentioned parts are combined on the base 10 with the screw section 34 and a nut 70 of axial region 33 ends.Locating washer 71 and bouncing plate group 50 1 side contacts.

Backstop cam 80 has the perforation 81 of passing for axial region 33, makes backstop cam 80 together to rotate with rotating shaft 30.Backstop cam 80 outer rims have the bigger lip part of a diameter 82, lip part 82 1 sides can with block 12 contactor banking stops under base 10 circular holes 11, and the angle that the supporting frame 20 that can limit pivot is opened, excessive to prevent the screen opening angle, its action can be with reference to figure 4 and Fig. 5.

Referring to Fig. 6, anchor wheel 61 has a circular hole 615 and passes for the axial region 33 of rotating shaft, and root edge has a folding hook part 614, and the open-work L13 of base 10 circular holes 11 belows is stretched in this folding hook part 614, makes anchor take turns 61 and is fixed on the base 10.Anchor is taken turns and is formed at least three interior external position differences and the different depression 611,612 and 613 of angle on 61 surface of contact 616.Both sides in each depression form slope 611a, 612a and 613a.The another side that anchor is taken turns 61 relative contacts 616 then contacts with backstop cam 80.

Rotating cam 62 has a perforation 625 axial regions 33 for rotating shaft and passes, and rotating cam 62 and rotating shaft 30 are together rotated.On the surface of contact 624 of rotating cam 62, relative fixed is recessed takes turns 61 depression 611,612 and 613 and forms at least three dogs 621,622 and 623.Both sides at each dog form slope 621a, 622a and 623a; Utilize the slope of dog and the slope of depression, make dog to slip in the depression smoothly or rise in the depression certainly.Rotating cam 62 is then compressed by bouncing plate group 50 with respect to the another side of surface of contact 624, keeps rotating cam 62 closely to contact with anchor wheel 61.

Because bouncing plate group 50 provides compressing power, make supporting frame 20 on the display screen that is fixed in the folding electron product, relatively the body of folding electron product amount to or unspecified angle on open and fix.Nut 70 can be adjusted the compressing power of bouncing plate group 50 and adjust the action torsion of pivot.Pad 40 is arranged between the breast wheel 32 and base 10 of rotating shaft.

In the positioning device 60 that the utility model is made of anchor wheel 61 and rotating cam 62, it is taken turns on 61 surface of contact 616 at anchor and forms at least three interior external position differences and the different depression 611,612 and 613 of angle, and on rotating cam 62 surface of contact 624 relative fixed recessed take turns be recessed to form at least three dogs 621,622 and 623; When rotating cam 62 is rotated to three dogs 621,622 and 623 when falling in three depressions of anchor wheel 611,612 and 613 by rotating shaft 30, form automatic locking function; When rotating cam 62 was taken turns for 61 whens rotation (when screen is opened) in that relative fixed is recessed, by at least three dogs 621,622 and 623 with anchor take turns 61 surface of contact 616 between form contact (form a face) of face at 3, disperse to reach strength, make 61 on rotating cam 62 and anchor wheel that more stable fixed support be arranged, and not fragile, the linearity contact of more known two salient points greatly improves.

The person of advancing, though have three with the dog 621,622 and 623 of embodiment shown in the drawing, not as limit, but the simple and easy or equivalent transformation of doing according to these creative ideas all belongs among the utility model scope of patent protection.

Claims

1. the automatic sealed pivot of multiple-jaw type is positioned between the display screen and body of folding electron product, it is characterized in that, comprising:

2. according to the automatic sealed pivot of the described multiple-jaw type of claim 1, it is characterized in that: between base and positioning device, have one and can together rotate with rotating shaft and in order to limit the backstop cam of supporting frame opening angle; This backstop cam outer rim has a lip part, and this lip part one side is kept out contact mutually with the block under the base circular hole.

3. according to the automatic sealed pivot of the described multiple-jaw type of claim 1, it is characterized in that: anchor wheel has a circular hole that passes for the rotating shaft axial region, and root edge has a folding hook part, and this folding hook part is stretched in the open-work below the base circular hole.

4. according to the automatic sealed pivot of the described multiple-jaw type of claim 1, it is characterized in that: the both sides of each depression of anchor wheel have slope.

5. according to the automatic sealed pivot of the described multiple-jaw type of claim 1, it is characterized in that: the both sides of each dog of rotating cam have slope.

6. according to the automatic sealed pivot of the described multiple-jaw type of claim 1, it is characterized in that: the axial region end of rotating shaft has the screw section, and is screwed with a nut.

7. according to the automatic sealed pivot of the described multiple-jaw type of claim 6, it is characterized in that: have before the nut one with the locating washer of bouncing plate group one side contacts.