CN202381521U

CN202381521U - Automatic opening rotating shaft

Info

Publication number: CN202381521U
Application number: CN2011205299524U
Authority: CN
Inventors: 刘德发
Original assignee: KUNSHAN LEMTECH PRECISION MACHINERY CO Ltd
Current assignee: Kunshan Liande Prec Mat Co ltd; Liande Precision Materials China Co ltd
Priority date: 2011-12-19
Filing date: 2011-12-19
Publication date: 2012-08-15
Anticipated expiration: 2021-12-19

Abstract

The utility model discloses an automatic opening rotating shaft which comprises a master shaft, a rotating shaft, a first cam and a second cam, wherein the rotating shaft is capable of automatically rotating at a certain angle, the first cam and the second cam are sleeved on the rotating shaft; one end of the master shaft is sleeved outside one end of the rotating shaft, and a clearance is reserved on the matching face; an anti-corrosion rubber elastic material for plugging the clearance is arranged on the peripheral matching face between the rotating shaft and the master shaft; a locating matching structure is arranged on the radial matching face between the rotating shaft and the master shaft; and damping oil is poured into a closed chamber formed between the anti-corrosion rubber elastic material and the clearance. The automatic opening rotating shaft is simple in structure, easy to assembly and capable of producing torque; the impacting force produced by automatically opening can be buffered by the damping oil, so that other structures can be prevented from damaging due to excessive impacting force produced by opening the product. The damping oil can be effectively prevented from leaking through the anti-corrosion rubber elastic material, and a mandrel can be prevented from separating from the master shaft as well. The positioning matching between the mandrel and the master shaft can prevent the mandrel and the master shaft from inclining during assembling, the location fit can be set into angle positioning based on the required angle, therefore, the assembly is convenient to carry out, and the yield of the product can be improved.

Description

Automatically open rotating shaft

Technical field

The utility model relates to a kind of automatic unlatching rotating shaft, belongs to field of mechanical technique.

Background technique

Use the structure of opening rotating shaft automatically for some, rely on to overcome transition point once less initial external force and can realize that rotating shaft is opened into required maximum angle automatically, this structure has lot of advantages, has been employed on many products such as notebook computer.But open rotating shaft automatically in the process of automatic closure or openness, because mechanical motion inertia can produce certain impact force to product, this impact force is very disadvantageous to product.The too fast shortcoming that causes spare part to be easy to damage of its rotational speed when solving the automatic closure or openness of rotating shaft; But the method that the hinge structure of Taiwan patent TW M405136 automatic slowly keying adopts is that damper and damping oil are set between axle center and sleeve; Damping force when increasing its rotation; Play certain buffer function, realize the slow closure or openness of rotating shaft.The shortcoming of this method is a complex structure; During assembling, must successively elastic component, first cam, second cam, damper be placed in the section of establishing that connects on the axle center, and buckling member is fastened in the buckling groove on the axle center; The section of establishing that connects with the axle center places in the sleeve then, and assembling needs to spend more man-hour; Be provided with certain clearance between axle center and the sleeve, the product coaxality of assembling is relatively poor, and it is crooked to be prone to generation, and the product yield reduces, and does not have disconnecting prevention structure, and the axle center is prone in sleeve, break away from; The damping oil that is distributed between sleeve and the damper can be revealed polluted product from sleeve towards the through hole of the end of second cam or the sleeve the other end.

The model utility content

The utility model technical problem to be solved provides a kind of automatic unlatching rotating shaft, and is simple in structure, and it is convenient to assemble, and can prevent the damping oil leakage, and the difficult generation in assembling back is crooked, raising product yield.

For solving the problems of the technologies described above; The utility model provides a kind of automatic unlatching rotating shaft, comprises the rotating shaft that a female axle, can rotate to an angle automatically, is placed in first cam and second cam in the rotating shaft; It is characterized in that; One end of said female axle is placed in outside said rotating shaft one end, preset clearance between its fitting surface, and the circumferential fitting surface of said rotating shaft and said female axle is provided with the anticorrosive rubber elasticity thing in the said gap of a shutoff; The radial fit face of said rotating shaft and said female axle is provided with the location cooperating structure, injects damping oil in the enclosed cavity that said anticorrosive rubber elasticity thing and said gap constitute.

Said rotating shaft comprises an axle and another female axle of an end socket, and an end of said another female axle does not have on the end that is socketed in said axle with relatively rotating, and is fixed by a fastening piece.

Said axle comprises different two sections of sectional shape, is respectively a rib shape connecting rod and a column circular shaft, and said female axle sleeve is in an end of said circular shaft, and said another female axle sleeve is in an end of said connecting rod.

The relative nothing of said first cam is placed on the said connecting rod rotationally, and is connected with said another female axle through a spring.

Said second cam is placed on the said circular shaft, and with the clamping of said female axle.

Said location cooperating structure comprises the cylinder shape groove that is located at along the axle center on the said circular shaft end face and is located at the projection in said female axle one end rotationally with said groove fit.

All comprise one section on said female axle, another female axle and be used for the flat bar that is connected with the product of unlatching.

Comprise convex surface and concave curved surface respectively on said first cam face relative with said second cam.

Said anticorrosive rubber elasticity thing is a rubber ring.

The beneficial effect that the utility model reached:

The automatic unlatching turning shaft structure of the utility model is simple, damper need be set, and is prone to assembling; By the impact force that damping oil buffering is opened automatically, reach the damping of expection, impact force is excessive when avoiding opening product, and causes other frameworks to damage.Can prevent effectively that by anticorrosive rubber elasticity thing damping oil from revealing, and by in the groove on the socket end internal surface of its circular shaft outer surface that is stuck in axle and second female axle, can prevent that axle from deviating from second female; Simultaneously, first female axle is fixedly connected through rivet or fixing pin with axle, makes axle be difficult for from two female axles, breaking away from.Be provided with the location between axle and the second female axle and cooperate, produce crookedly when preventing to assemble, the angle that the location cooperation can be as required is arranged to angular positioning, and it is convenient to assemble, and has improved the product yield.

Description of drawings

Fig. 1 is the automatic unlatching rotating shaft schematic representation of the utility model;

Fig. 2 is the sectional view of Fig. 1;

Fig. 3 is an A portion enlarged view among Fig. 2;

Fig. 4 is a B portion enlarged view among Fig. 2;

Fig. 5 is a C portion enlarged view among Fig. 2;

Fig. 6 is the exploded view of Fig. 1;

Wherein, 1, first female axle; 11, flat bar; 12, flat sleeve; 13, plane; 14, through hole; 15, through hole; 2, axle; 21, connecting rod; 22, fixed hole; 23, circular shaft; 24, groove; 3, rubber ring; 4, first cam; 41, convex surface; 5, second cam; 51, convexity; 52, concave curved surface; 6, spring; 7, second female axle; 71, socket end; 72, projection; 73, flat bar; 74, through hole; 75, gap; 8, rivet or fixing pin; 9, gap.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.Following examples only are used for more clearly explaining the technological scheme of the utility model, and can not limit the protection domain of the utility model with this.

Like Fig. 1, Fig. 2 and shown in Figure 6, the automatic unlatching rotating shaft of the utility model comprises rotating shaft that first female axle 1 and axle 2 constitute, rubber ring 3, first cam 4, second cam 5, spring 6, second female axle 7.First female axle 1 one ends are a flat bar 11, include several through holes 15 on it, are used to be connected to the product that needs rotating shaft to open; First female axle 1 the other end is a flat sleeve 12, and it can hold an end of axle 2.The internal surface of flat sleeve 12 and axle one end connecting rod 21 form fit all comprise at least two planes, and the outer surface of flat sleeve 12 comprises two planes 13 that two parallel planes, 13, one through holes 14 run through outer surface.

Axle 2 comprises two sections, and wherein one section is a connecting rod 21, can insert ordinatedly in first female axle 1; And connecting rod 21 ends are provided with the fixed hole 22 that through hole 14 positions on the outer surface with flat sleeve 12 cooperate, and are as shown in Figure 3, and connecting rod 21 inserts 1 last time of the first female axle; Can pass through hole 14, fixed hole 22 by rivet or fixing pin 8; One end of axle 2 is fixed on first female axle 1, and when first female axle 1 was rotated, axle 2 was rotated thereupon together; And, be difficult for rocking between first female axle 1 and the axle 2 owing to rivet or fixing pin 8, the internal surface of flat sleeve 12 and cooperating of axle connecting rod 21 shapes are arranged.

Axle 2 another sections are that a socket end 71 of a circular shaft 23, the second female axles 7 is placed in outside the circular shaft 23 of axle 2, and preset clearance 9 between its fitting surface, so that inject damping oil, oil mass can be adjusted by the damping dynamics.As shown in Figure 4, reveal in order to prevent damping oil, on the circumferential fitting surface of the circular shaft 23 of axle 2 and second female axle 7, be provided with the anticorrosive rubber elasticity thing in a shutoff gap 9, employing rubber ring 3 in the present embodiment.Socket end 71 internal surfaces of circular shaft 23 outer surfaces of axle 2 and second female axle 7 are provided with the groove that holds rubber ring 3.As shown in Figure 5, the axle center, circular shaft 23 end face upper edge of axle 2 is provided with a cylinder shape groove 24, and corresponding second female axle 7 socket ends 71 inside are provided with a cylindrical projection 72 along the axle center.Realize that by groove 24, projection 72 axles 2 cooperate with location between second female axle 7, generation is crooked when preventing to assemble.Axle 2 can be running shaft with the axle center, cooperates rotation with second female axle 7.Second female axle 7 also comprises a flat bar 73, includes several through holes 74 on it, is used to be connected to the product that needs rotating shaft to open.

Be arranged with on the connecting rod 21 of axle 2 between first cam, 4, the first cams 4 and the first female axle 1 and be connected by spring 6.Because the effect of spring 6, first cam 4 can be along connecting rod 21 axial motions of axle 2.The circular shaft 23 of axle 2 is provided with a shoulder and is used for sheathed second cam 5.It is protruding 51 that one end end face of second cam 5 is provided with, and can be stuck in the set gap 75 of socket end 71 end faces of second female axle 7, make second cam 5 with second female 7 between no relative movement link together.Comprise the convex surface 41 and concave curved surface 52 that form fit is provided with respectively on first cam 4 face relative with second cam 5.

When automatic unlatching rotating shaft in the process that is opened into maximum angle automatically; An end that is enclosed in second female axle 7 by first female axle 1 drive axle 2 moves vertically; Because of having injected damping oil in the gap between its fitting surface; Therefore make the axial motion of rotating shaft more slow, can make the desirable maximum angle of product bullet slowly.

The automatic unlatching rotating shaft assembling of the utility model is simple and convenient; Second cam 5, first cam 4 are sheathed on the circular shaft 23 and connecting rod 21 of axle 2 successively; Then at connecting rod 21 sheathed upper springs 6; And in the flat sleeve 12 with connecting rod 21 ends insertion first female axle 1, and be connected fixing with first female 1 axle 2 through a rivet or fixing pin 8.Sheathed rubber ring 3 in the groove on the circular shaft 23 of axle 1, an and end of sheathed rubber ring 3 inserted in the socket end 71 of second female axle 7, rubber ring 3 snaps in the groove of socket end 71 internal surfaces just, makes that the axle 2 and the second female axle 7 are fixing to be difficult for disengaging.

The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and distortion, these improvement and distortion also should be regarded as the protection domain of the utility model.

Claims

1. open rotating shaft automatically for one kind; Comprise the rotating shaft that a female axle, can rotate to an angle automatically; Be placed in first cam and second cam in the rotating shaft, it is characterized in that, an end of said female axle is placed in outside said rotating shaft one end; Preset clearance between its fitting surface; The circumferential fitting surface of said rotating shaft and said female axle is provided with the anticorrosive rubber elasticity thing in the said gap of a shutoff, and the radial fit face of said rotating shaft and said female axle is provided with the location cooperating structure, injects damping oil in the enclosed cavity that said anticorrosive rubber elasticity thing and said gap constitute.

2. automatic unlatching rotating shaft according to claim 1 is characterized in that, said rotating shaft comprises an axle and another female axle of an end socket, and an end of said another female axle does not have on the end that is socketed in said axle with relatively rotating, and is fixed by a fastening piece.

3. automatic unlatching rotating shaft according to claim 2; It is characterized in that said axle comprises different two sections of sectional shape, is respectively a rib shape connecting rod and a column circular shaft; Said female axle sleeve is in an end of said circular shaft, and said another female axle sleeve is in an end of said connecting rod.

4. automatic unlatching rotating shaft according to claim 3 is characterized in that, the relative nothing of said first cam is placed on the said connecting rod rotationally, and is connected with said another female axle through a spring.

5. automatic unlatching rotating shaft according to claim 3 is characterized in that said second cam is placed on the said circular shaft, and with the clamping of said female axle.

6. automatic unlatching rotating shaft according to claim 3 is characterized in that, said location cooperating structure comprises the cylinder shape groove that is located at along the axle center on the said circular shaft end face and is located at the projection in said female axle one end rotationally with said groove fit.

7. automatic unlatching rotating shaft according to claim 2 is characterized in that, all comprises one section on said female axle, another female axle and is used for the flat bar that is connected with the product of unlatching.

8. automatic unlatching rotating shaft according to claim 1 is characterized in that, comprises convex surface and concave curved surface respectively on said first cam face relative with said second cam.

9. automatic unlatching rotating shaft according to claim 1 is characterized in that, said anticorrosive rubber elasticity thing is a rubber ring.