CN201318385Y

CN201318385Y - Limit

Info

Publication number: CN201318385Y
Application number: CNU2008201842030U
Authority: CN
Inventors: 林清雄
Original assignee: CHANGDE Co Ltd
Current assignee: CHANGDE Co Ltd
Priority date: 2008-12-19
Filing date: 2008-12-19
Publication date: 2009-09-30
Anticipated expiration: 2018-12-19

Abstract

The utility model relates to a limit cam module of a hinge device; a section of arc notch part is arranged at the outer circumference of the fixed cam, a limit block is arranged on a rotating cam correspondingly, after the fixed cam and the rotating cam are buckled, the limit block is movably arranged in the notch part, and a sliding inclined groove and a sliding inclined block are arranged on an adjacent surface of the fixed cam and the rotating cam; when the fixed cam and the rotating cam rotate relatively, the limit block can carry out limit rotation to the arc notch part, thereby achieving the purpose of limiting the rotating angle.

Description

The limit cam module of pivot device

Technical field

The utility model relates to a kind of pivot device of electronic product special use, is meant a kind of module structure that promptly has limit function itself especially.

Background technique

Our common pivot device that is used for electronic product, be as being connected in screen with between body, so that screen and body relatively rotate, and can reach purposes such as opening use or folding storage, the pivot device of this class is to utilize the relative each other cam set and the cooperation of elastic element, to produce suitable frictional force and torsion, and in the rotation process, normally rely on rotating shaft and link the all-in-one-piece banking stop,, and reach the effect that limits rotation angle with the mutual clip of the stop block on the support.

As shown in Figure 1, general pivot device 1 comprises: a rotating shaft 11, one banking stop 12, one support 13, one stationary cam 14, one turn cam 15, one elastic element 16 and a fixed block 17, banking stop 12, support 13, stationary cam 14, turn cam 15 and elastic element 16, be to be set in regular turn in the rotating shaft 11, rotating shaft 11 is terminal and screw togather and finish assembling with fixed block 17, wherein, the outer periphery of described banking stop 12 are provided with the stopper part 121 of one section arc, and support 13 and banking stop 12 mutually the one side of closing be provided with a stop block 131, because banking stop 12 can rotate and rotate synchronously along with rotating shaft 11, and after banking stop 12 rotates, can be by 131 blocks of the stop block of support 13, and reach the purpose of restriction rotation angle.

Yet, during actual the use, because banking stop 12 has certain thickness, for the pivot device 1 that needs reduced volume,, after cumulative rises, also can cause the volume of pivot device 1 to become big and can't reduce if increase the thickness of a member, and increase the member of banking stop 12, and on support 13, increase limiting stopper 131, all can increase extra manufacture cost, locating of its immaturity and be necessary to be improved.

So the utility model designer accumulation designs the experience of pivot device for many years, designs the one-body molded limit configuration that is located on the cam set,, increase the effect of restriction rotation angle with when cam set relatively rotates.

Summary of the invention

Main purpose of the present utility model aims to provide a kind of limit cam module with pivot device of restriction rotation angle effect, with the overall volume after the reduction assembling, and reduces manufacture cost.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of limit cam module of pivot device is characterized in that, comprising:

One stationary cam, one side are provided with a sliding skewed slot, and outer periphery are provided with the notch part of one section arc;

One is located at the turn cam of described stationary cam one side, it simultaneously is provided with a sliding skewback, the mutual contact of sliding skewback of the sliding skewed slot of stationary cam and turn cam, described turn cam outer periphery are provided with a limiting stopper in addition, and limiting stopper is actively installed in the notch part of stationary cam.

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be: in use, stationary cam can relatively rotate with the turn cam, makes limiting stopper do spacing rotation at the notch part of arc, to reach the purpose of restriction rotation angle; Moreover, because notch part and limiting stopper are one-body moldedly can't increase volume in stationary cam and turn cam outer periphery after the assembling, and reduce volume and reduction manufacture cost that the use banking stop also can reduce pivot device.

Description of drawings

Fig. 1 is the three-dimensional exploded view of existing pivot device;

Fig. 2 is the stereogram that the utility model preferred embodiment is installed in pivot device;

Fig. 3 is the three-dimensional combination figure of the utility model preferred embodiment;

Fig. 4 is the stereogram of the utility model preferred embodiment stationary cam;

Fig. 5 is the stereogram of the utility model preferred embodiment turn cam;

Action schematic representation when Fig. 6 is the utility model preferred embodiment rotation;

Fig. 7 is the three-dimensional exploded view of another preferred embodiment of the utility model;

Fig. 8 is the assembled sectional view of another preferred embodiment of the utility model.

Description of reference numerals: 1-pivot device; The 11-rotating shaft; The 12-banking stop; The 121-stopper part; The 13-support; The 131-stop block; The 14-stationary cam; 15-turn cam; The 16-elastic element; The 17-fixed block; The 2-stationary cam; The 21-circular hole; The 211-notch part; The sliding skewed slot of 22-; The 23-notch part; The 24-locating column; 25-encircles barricade; 3-turn cam; 31-embedding hole; The 311-limiting stopper; The sliding skewback of 32-; The 33-limiting stopper; The 34-bump; The 4-pivot device; The 41-support; The 411-circular hole; The 412-positioning hole; The 42-shell fragment; 421-embedding hole; The 43-rotating shaft; The 44-fixed block.

Embodiment

Understand content of the present utility model for your juror can be known, it is graphic only to arrange in pairs or groups in the following instructions, please consult.

See also Fig. 2, shown in Figure 3, preferred embodiment of the present utility model comprises following member:

One stationary cam 2, again as shown in Figure 4, its central authorities are provided with a circular hole 21, simultaneously (right side in the drawings) is provided with a sliding skewed slot 22, and its outer periphery are provided with the notch part 23 of one section arc, and stationary cam 2 outer periphery and convex with a locating column 24 (left side as shown in Figure 4), and locating column 24 and sliding skewed slot were located at the two sides of stationary cam 2 in 22 minutes; Moreover circular hole 21 walls of stationary cam 2 are provided with the notch part 211 of one section arc.

One turn cam 3, and for example shown in Figure 5, its central authorities are provided with an embedding hole 31, be located at a side of stationary cam 3 relatively, on the one side (left side as shown in FIG.) of stationary cam 3 adjacency, be provided with a sliding skewback 32, make stationary cam 2 and the turn cam 3 can be involutory, and the sliding skewed slot 22 of stationary cam 2 and the sliding skewback 32 mutual contacts of turn cam 3, the relative notch part 23 of turn cam 3 outer periphery is provided with a limiting stopper 33, and limiting stopper 33 is actively installed in the notch part 23 of stationary cam 2; Described turn cam 3 is provided with central uplift, the bump 34 that outer periphery are gradually fallen with respect to the another side (right side as shown in Figure 5) of sliding skewback 32 in addition; Moreover a side in turn cam 3 embedding holes 31 convexes with a limiting stopper 311 again, and this limiting stopper 311 is actively installed in the aforementioned notch part 211.

See also Fig. 2, Fig. 3, shown in Figure 6, when being assembled into a pivot device 4, be with a support 41, stationary cam 2, turn cam 3 and plural pieces shell fragment 42 are arranged in the rotating shaft 43 in regular turn, and the end of rotating shaft 43 is established fixing with fixed block 44 spiral shells again, wherein, circular hole 411 1 sides of support 41 are provided with a positioning hole 412, be provided with wearing the locating column 24 of stationary cam 2, and in the embedding hole 421 of the embedding hole 31 that rotating shaft 43 is arranged in turn cam 3 and shell fragment 42, form to rotate and link, turn cam 3 can rotate with shell fragment 42 thereupon synchronously when rotating shaft 43 was rotated, but and be adjacent to the outer periphery of the shell fragment 42 outer periphery contacts of turn cam 3 at bump 34; During use, 3 on stationary cam 2 and turn cam produce relative rotation, make limiting stopper 311, the 33rd, at the notch part 211 of arc, do spacing rotation in 23, rely on limiting

stopper

311,33 with notch part 211, during the mutual contact of 23 1 sides, stationary cam 2 can't be rotated further with turn cam 3, and reach the restriction rotation angle purpose, its dual spacing design also has the effect of strengthening block strength, and the bump 24 of turn cam 2, can reduce the decrement of first shell fragment 42, so that each shell fragment 42 suffered compressive force is on average disperseed, and then increase working life of shell fragment 42; Moreover, can't increase volume after the assembling, and banking stop capable of reducing using, and have the volume of reduction pivot device 4 and the effect that reduces manufacture cost.

Moreover, see also Fig. 7, shown in Figure 8, another preferred embodiment of the utility model, mainly be that outer periphery at stationary cam 2 outwards are convexly equipped with a ring barricade 25, encircle barricade 25 and can form the aspect that coats sliding skewed slot 22 and notch part 23, the notch part 23 that is positioned at the outside then forms groove shape structure with

ring barricade

25,3 on turn cam is movably set in the ring barricade 25 of stationary cam 2, and the ring barricade 25 of stationary cam 2 highly is sliding skewback 32 height greater than turn cam 3, and be provided with lubricant grease at

stationary cam

2 and 3 on turn cam, increase the feel when using to reduce the friction between member, and the oil leakage phenomenon when preventing to use and increasing the service life.

As mentioned above, as Fig. 2～shown in Figure 8, the utility model will have following advantage when implementing:

The utility model is the notch part 23 that is provided with arc at stationary cam 2, and turn cam 3 is provided with limiting stopper 33, and stationary cam 2 is involutory uses with turn cam 3, when it relatively rotates, limiting stopper 33 is spacing slips in notch part 23, to reach the effect of restriction rotation angle.

Moreover, because the notch part 23 of stationary cam 2, be made of one piece with the limiting stopper 33 of turn cam 3, can't increase volume after the assembling, and banking stop capable of reducing using, and have the volume of reduction pivot device and the effect that reduces manufacture cost.

And the bump 34 (as shown in Figure 2) of the utility model turn cam 3 is the decrements that can reduce by first shell fragment 42, and compressive force on average is distributed to each shell fragment 42, and can increase the working life of shell fragment 42.

Again, the outer periphery of stationary cam 2 are provided with a ring barricade 25, to coat sliding skewed slot 22 and notch part 23, turn cam 3 is movably set in the ring barricade 25 of

stationary cam

2,3 on stationary cam 2 and turn cam also are provided with lubricant grease, increase the feel when using to reduce the friction between member, and the oil leakage phenomenon when preventing to use and increasing the service life.

More than explanation is just illustrative for the utility model; and it is nonrestrictive; those of ordinary skills understand; under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence, for example a plurality of shell fragments be changed into a spring, or limiting stopper is located at stationary cam; notch part is located at turn cam etc., but all will fall within the protection domain of the present utility model.

Claims

1. the limit cam module of a pivot device is characterized in that, comprising:

2. the limit cam module of pivot device according to claim 1 is characterized in that, described stationary cam central authorities are provided with a circular hole, and turn cam central authorities are provided with an embedding hole.

3. the limit cam module of pivot device according to claim 2, it is characterized in that, the circular hole wall of described stationary cam is provided with the notch part of one section arc, and a side in turn cam embedding hole is to convex with a limiting stopper, and limiting stopper is actively installed in the aforementioned notch part.

4. the limit cam module of pivot device according to claim 1 is characterized in that, described stationary cam outer periphery are to convex with a ring barricade, and the ring barricade coats sliding skewed slot and notch part, and the turn cam is movably set in the ring barricade of stationary cam.

5. the limit cam module of pivot device according to claim 4 is characterized in that, the ring wall height of described stationary cam is greater than the sliding skewback height of turn cam.

6. the limit cam module of pivot device according to claim 1 is characterized in that, described stationary cam outer periphery also convex with a locating column, and locating column and sliding skewed slot branch are located at the two sides of stationary cam.

7. the limit cam module of pivot device according to claim 1 is characterized in that, described turn cam is with respect to the another side of sliding skewback, is provided with the bump that central uplift, outer periphery are gradually fallen.

8. the limit cam module of pivot device according to claim 1 is characterized in that, the notch part of described stationary cam can with the limiting stopper transposition of turn cam.