CN201301886Y - Rotating shaft device - Google Patents

Abstract

The utility model discloses a rotating shaft device, which comprises a rotating shaft, a friction reed set, a connecting seat body and a bearing part, wherein each friction reed of the friction reed set is internally provided with a shaft hole for the rotating shaft to penetrate through, and a friction elastic arm is formed at a deformation space part where the shaft hole extends to two sides; when the cover plate is pulled to open, the bearing part can drive the rotating shaft to rotate movably, so that the guide arc surfaces on the outer periphery of the butting part rotate to push against the two friction elastic arms, the friction elastic arms provide a pressing component force for the stable rotation of the rotating shaft, and the contact surface area is reduced by half because the tangent plane between each two adjacent guide arc surfaces does not rotate and rub with the inner wall surface of the shaft hole, so that the cover plate can be opened easily by only one hand; when the cover plate is closed, the contact surface area is reduced by half, and the torsion generated by the self-weight of the cover plate is added, so that the cover plate has an automatic pressing function, and can be easily and tightly closed on the base, and further, the effects of light opening and light closing can be achieved.

Description

Shaft device

technical field

The utility model relates to a rotating shaft device, which belongs to the technical field of the connection structure of mechanical and electronic products, specifically belongs to the technical field of the connection structure of the mechanical and electronic products with flipping function, especially the connection structure between a notebook computer host and a display screen.

In particular, the rotating shaft can be used for active rotation in the shaft hole of the friction reed, and the friction elastic arm provides the component force of the rotating shaft to be pressed down, so that the surface area of the frictional contact is halved and has an automatic pressing function, which only needs one hand A rotating shaft device that can be lightly opened and lightly closed.

Background technique

Generally, the hinge device used in notebook computers does not have the function of automatically pressing down when the cover is closed, so that the display connected to the action end cannot be tightly covered with the host connected to the connecting base through the hinge device, and will Due to the reaction torque generated by the rotating shaft, the display rebounds and tilts. At this time, a large force must be applied to completely cover the display above the main unit. However, if the force is too large, the display will directly collide with the main unit. Even after the collision or impact, related failures, functional failures and other defects occur; therefore, some operators have made an improvement to the rotating shaft device, which is to use the rotating shaft on the rotating shaft device to install friction components and damping parts, and The friction assembly is composed of two friction wheels that can be fitted and positioned with each other, and the rotating shaft drives the friction wheel to slide against the outer end surface of the other friction wheel to present a high and low level difference movement state, and at the same time move towards the damping part After compressing its multiple shrapnels to generate elastic resistance, another friction wheel is pushed in the opposite direction by the damping part and is instantly fitted into the friction wheel to form a position, so that the rotating shaft device has the function of automatically pressing down to prevent the display from being closed. When it is on the main unit, it cannot be tightly closed and it can be flipped open. However, when the user wants to open the display, he must use both hands to pull the display and the main unit separately to have enough force to perform the overturning action. Otherwise, only one hand is required. Opening the display will not only directly cause the whole host to be lifted up, but also may cause the host to accidentally slip due to operational inconvenience, damage and damage to the structure caused by drop vibration, which will increase the failure rate and increase its maintenance and replacement. cost required.

Contents of the invention

The utility model provides a rotating shaft device, which can realize the effect of lightly opening and lightly closing the cover plate, has the positioning effect of reliable and stable action, and does not shake, thereby ensuring the stability and reliability of the overall use, and is available for use Or pull the cover plate to make any stop at the predetermined rotation angle, which has the purpose of accurate positioning and no deviation or shaking due to improper force application.

For achieving the above object, the technical scheme of the utility model is:

A rotating shaft device, especially a rotating shaft device that can be used to halve the surface area of the frictional contact when the rotating shaft rotates freely, has the function of automatically pressing down, and is convenient for light opening and light closing. It includes a rotating shaft, a friction reed group, and a connecting seat and the undertaking department, including:

One side of the rotating shaft is provided with a positioning portion, and then the positioning portion extends toward the other side with a butt joint portion having an arc-guiding surface and a tangent plane;

The friction reed group is composed of a plurality of friction reeds, and each friction reed has a shaft hole for the butt joint of the rotating shaft to pass through, and there are respectively formed holes in the deformation space where the shaft hole extends to the two sides. The arc-guiding surface rotates and pushes against the elastically deformed friction elastic arm, and the outer side of the shaft hole two is provided with a relatively inward necked part, and then expands outward to form a protruding part, which is formed on the other side away from the protruding part. have depressions;

The connecting seat body has a shaft portion, and an accommodating space for accommodating the rotating shaft and the friction reed group is formed in the shaft portion. The resisting shoulder and the limiting end located below the resisting shoulder are provided with a stop end on the other side away from the limit end, and the limit end and the stop end are protrusions and depressions for friction reeds The part is elastically supported and positioned;

One side of the receiving portion is provided with an engaging space for the rotating shaft to protrude from the outer side of the accommodating space of the connecting seat body to form an engaging and fixing space.

The rotating shaft has at least four equidistant and two corresponding arc-guiding surfaces arranged at least four equidistant and two corresponding arc-guiding surfaces at intervals around the outer periphery of the butt joint, and a shaft hole is formed between the two adjacent arc-guiding surfaces that can reduce the joint portion of the rotating shaft and the friction spring shaft hole , the tangent plane of the contact surface area between the friction elastic arms.

The rotating shaft is provided with a rotating part between the positioning part and the docking part, and at least two ring-shaped intervals are arranged on the outer periphery of the rotating part, which can reduce the rotating part of the rotating shaft, the friction reed shaft hole, and the friction elastic arm. The tangent plane of the surface area in contact.

The friction reed set is clamped and positioned with a reed liner on the outer sides of the two friction reeds, and lubricating oil is stored in the shaft holes and deformation spaces of the friction reeds, and there are two formed in the deformation space of the shaft holes. The friction elastic arms of different lengths, and then the end edge of the shorter friction elastic arm protrudes toward the shaft hole to provide a resisting portion for the rotating shaft to resist and push.

The friction reed set is provided with a concave arc surface on the bottom side of the protruding part of the friction reed, which can be rotated and pushed against by the rotating shaft to form an elastic deformation. The inner stop end is the vertical side wall surface that limits the deformation and displacement of the shaft hole.

The advantage of adopting the technical solution of the utility model is:

When the cover plate is opened, the rotating shaft can be driven by the receiving part to rotate freely, so that the arc-guiding surface on the outer periphery of the connecting part of the rotating shaft rotates and pushes against the two friction elastic arms of the friction reed, and the friction elastic arm provides stable rotation of the rotating shaft Since the tangent plane between two adjacent arc-guiding surfaces does not rotate and rub against the inner wall of the shaft hole, the contact surface area is halved, and the cover plate can be easily opened with only one hand without much effort. When the cover plate is closed on the base, the contact surface area is halved, and the torsion force generated by the cover plate itself is enough to overcome the predetermined friction force, so it has an automatic pressing function, so that the cover plate can be easily and tightly closed on the base Up, and then can achieve the effect of light opening and light closing.

During the rotation and displacement process of the rotating shaft, the position of the arc-guiding surface and the tangent plane on the docking part are alternately changed, and the four arc-guiding surfaces of the docking part rotate and push against the two friction elastic arms and the shaft hole. The relative contact surfaces gradually form a larger predetermined friction force, and at the same time, two of the four tangent planes of the butt joint are located in the shaft hole so that the surface area of the rotating friction contact is multiplied, which can provide the shaft to stop the rotation state instantly, and has a reliable and reliable action. Stable, non-shaking positioning effect.

Since the friction reed extends from the shaft hole to the deformation space on both sides, two friction elastic arms with different lengths are formed, and then the end edge of the shorter friction elastic arm protrudes toward the shaft hole to make it resist After being pushed by the rotating shaft, the large elastic resistance will be generated to form a good holding and positioning effect. At this time, the vertical side wall surface of the concave part of the friction reed can also be used to limit along the stop end in the shaft part of the connecting seat. The shaft hole is deformed and displaced to prevent the cover plate from bouncing and tilting due to the inability to close tightly after it is closed on the base, thereby ensuring the stability and reliability of the overall use.

Since the rotating part can be provided between the positioning part and the docking part of the rotating shaft, and at least two tangent planes are arranged at intervals in a ring on the outer periphery of the rotating part, and the rotating part can be rotated and pushed against the friction spring The two friction elastic arms of the sheet and the relative contact surfaces on the shaft hole, and because there are only two tangent planes in the rotating part, they will not directly form rotational friction with the inner wall of the shaft hole, so that the contact surface area is doubled to form a larger The predetermined frictional force allows the user to pull the cover plate to any stop at a predetermined rotation angle between 15 degrees and 135 degrees, and has the effect of accurate positioning and no deviation or shaking due to improper force application.

Description of drawings

Fig. 1 is a three-dimensional appearance view of the utility model.

Fig. 2 is a three-dimensional exploded view of the utility model.

Fig. 3 is a three-dimensional appearance view of the friction reed of the present invention.

Fig. 4 is a partial side sectional view of the utility model before use.

Fig. 5 is a partial side sectional view of the utility model when in use.

Fig. 6 is a perspective view of a preferred embodiment of the utility model.

Fig. 7 is a three-dimensional appearance view of another preferred embodiment of the present invention.

Fig. 8 is a diagram of the use state of another preferred embodiment of the present invention.

Description of main component symbols

1. Shaft

11. Positioning part 122. Cutting plane

12. Docking part 13. Rotating part

121. Guiding surface 131. Cutting plane

2. Friction reed set

21. Friction reed 213. Neck constriction

22. Reed gasket 214. Protruding part

210. Shaft hole 2141. Concave arc surface

211. Deformation space 215. Depression

212. Friction elastic arm 2151. Side wall surface

2121. Resistance Department

3. Connecting seat body

30. Accommodating space 312. Limit end

31. Shaft part 313. Stop end

311. Resist the shoulder

4. Undertaking department

40. Joint space

5. Notebook computer

51. Base 52. Cover

Detailed ways

In order to achieve the above-mentioned purpose and structure, the technical means and effects adopted by the utility model, the steps and functions of the preferred embodiments of the utility model are described in detail as follows by drawing.

Please refer to Fig. 1, Fig. 2, and Fig. 3. It can be clearly seen from the figures that the utility model is composed of a rotating shaft 1, a friction reed group 2, a connecting seat body 3 and a receiving portion 4. Therefore, in this case The main components and features are described in detail below, in which:

The rotating shaft 1 is generally a square shaft, and one side of the rotating shaft 1 is provided with a positioning portion 11, and then the positioning portion 11 extends toward the other side with a docking portion 12, and on the outer periphery of the docking portion 12, at least There are more than four arc-guiding surfaces 121 at equal distances and two corresponding arc-guiding surfaces 121 , and a tangent plane 122 is formed between two adjacent arc-guiding surfaces 121 .

The friction reed group 2 is composed of a plurality of friction reeds 21 of the same type and a reed liner 22 that can be clamped and positioned on the two outer sides of the friction reed 21, and is covered with the friction reed group 2 Installed on the butt joint 12 of the rotating shaft 1, the axial displacement of the friction reed 21 can be prevented by the reed liner 22, wherein each friction reed 21 has a shaft hole 210 for storing lubricating oil, and The shaft hole 210 extends to the deformation space 211 on the left and right sides, where two friction elastic arms 212 of different lengths are respectively formed, and then the end edge of the shorter friction elastic arm 212 protrudes toward the shaft hole 210 to provide a rotating shaft. 1. The abutting part 12 rotates and pushes the resisting part 2121, and the outer sides of the shaft hole 210 are provided with a relatively inward necked part 213, and then expands outward to form a protruding part 214, and the protruding part 214 A concave arc surface 2141 is provided at the center of the bottom side, and a concave portion 215 with a vertical sidewall surface 2151 is formed on the top of the other side away from the protruding portion 214 .

There is a shaft portion 31 above the top of the connecting seat body 3, and an accommodating space 30 for accommodating the rotating shaft 1 and the friction reed group 2 is formed in the shaft portion 31, and the two sides of the accommodating space 30 are respectively provided with resisting Hold the shoulder 311 , and then abut against the shoulder 311 to form a limiting end 312 downward, and then set a stop end 313 on the other side away from the limiting end 312 .

One side of the receiving part 4 is provided with a joint space 40, and the joint space 40 can be used for the shaft 1 to protrude from the butt joint part 12 outside the accommodation space 30 of the connecting seat body 3 to form a fastening and fixing, and combining with the above-mentioned components completes the present invention. The main form of the utility model.

When the utility model is assembled, the positioning part 11 on one side of the rotating shaft 1 is correspondingly installed in the accommodating space 30 on the shaft part 31 of the connecting seat body 3, and at the same time, the butt joint part 12 on the other side of the rotating shaft 1 is sleeved. Each friction reed 21 and reed liner 22 of the set friction reed set 2 are all accommodated in the accommodating space 30, and are held in the accommodating space 30 by the necked-in portion 213 of the two outer sides of the friction reed 21 corresponding On the abutting shoulder 311, and the protruding portion 214 that expands the necking portion 213 outward is positioned in the limit end 312 below the abutting shoulder 311, and then is abutted by the concave portion 215 and placed in the accommodating On the stop end 313 on the other side of the space 30 away from the limiting end 312, the butt joint 12 of the rotating shaft 1 can protrude from the outside of the accommodating space 30 and be engaged and fixed in the joint space 40 of the receiving portion 4, so as to prevent the rotating shaft 1 from Axial displacement with the receiving portion 4 and disengagement from each other completes the overall assembly of the utility model.

When the docking part 12 of the above-mentioned rotating shaft 1 is installed in the shaft hole 210 of the plurality of friction reeds 21 of the friction reed group 2, the two friction elastic arms 212 of the friction reed 21 are received by the arc-guiding surface on the docking part 12. 121 rotation and pushing, it will elastically deform towards the deformation space 211, and at the same time, the protruding part 214 and the concave part 215 on the outer side of the shaft hole 210 will be respectively elastically supported against the limit end 312 on the shaft part 31 of the connecting seat body 3 and the stop end 313, so that the friction reed 21 can be firmly and surely positioned in the accommodating space 30, and the concave arc surface 2141 on the bottom side of the protruding part 214 is pushed against by the rotating shaft 1 to form an elastic deformation. The vertical side wall surface 2151 of the recessed part 215 releases the torsion force of the rotating shaft 1 along the stopper end 313 to prevent deformation and damage of the shaft hole 210; in addition, predetermined lubricating oil can be stored in the deformation space 211, and when the receiving part 4 drives When the rotating shaft 1 generates rotational friction in the shaft hole 210 of the friction reed 21, it will bring out predetermined lubricating oil and have a better lubricating effect, thereby effectively prolonging the service life of the friction reed set 2 as a whole; moreover, the friction spring The number of friction reeds 21 of sheet group 2 can be increased or decreased depending on the needs of users or different designs. Therefore, if it is necessary to make the relative contact surface between shaft 1 and the shaft hole 210 of friction reeds 21 generate a larger predetermined frictional force At this time, the number of overlapping friction reeds 21 can be increased, and the torque required for the use of the rotating shaft 1 can be increased at the same time, or the total number of friction reeds 21 can be reduced to generate a smaller predetermined friction force.

Please continue to refer to Figure 4, Figure 5, and Figure 6. It can be clearly seen from the figures that when the above-mentioned components are in use, they are first pulled on the receiving part 4 to rotate with the shaft 1 as the axis, so that the shaft 1 is docked. The arc-guiding surface 121 on the part 12 rotates and pushes against the two friction elastic arms 212 in the shaft hole 210 of the friction reed 21, and the friction elastic arms 212 provide the downward pressure component of the rotating shaft 1, so that the rotating shaft 1 rotates and displaces. During the process, it can maintain a stable and smooth state; and when the rotating shaft 1 starts to rotate, the four arc-guiding surfaces 121 arranged at intervals on the outer periphery of the butt joint 12 of the rotating shaft 1 are respectively rotated and pushed against the two friction elastic arms 212 and the shaft hole 210 and because the four tangent planes 122 between the two adjacent arc-guiding surfaces 121 of the butt joint 12 do not form rotational friction with the inner wall surface of the shaft hole 210, at this time, the rotating shaft 1 is mainly based on the The relative contact surface between the two arc-guiding surfaces 121 and the shaft hole 210 has a predetermined friction force, so the structural design of the tangent plane 122 can be used to effectively reduce the friction between the butt joint 12 of the rotating shaft 1 and the friction spring 21. The surface area of contact between the hole 210 and the two friction elastic arms 212 can also solve the problems of wear, abnormal sound and temperature rise caused by interference assembly and poor matching concentricity.

Furthermore, when the rotating shaft 1 rotates and displaces, the positions of the arc-guiding surfaces 121 and the tangent planes 122 on the docking portion 12 of the rotating shaft 1 are alternately changed, and mainly the four arc-guiding surfaces 121 of the docking portion 12 Rotate and push against the relative contact surfaces of the two friction elastic arms 212 and the shaft hole 210 to gradually form a larger predetermined friction force, and at the same time make two of the four tangent planes 122 of the butt joint 12 be located in the shaft hole 210 so that they are in rotational frictional contact If the surface area is doubled, the rotating shaft 1 can stop rotating instantly, so that the positioning effect is sure, stable and does not shake.

In addition, its notebook computer 5 is composed of a base 51 and a cover plate 52, so that the rotating shaft device of the present utility model can be respectively arranged on the left and right sides of the notebook computer 5, and connect the base body 3 and the base 51 They are connected to each other, and the receiving part 4 can also be connected to the cover plate 52 in a certain position; and when the user pulls the cover plate 52 to open it, it can be linked with the receiving part 4 to drive the rotating shaft 1 to rotate freely, making it The contact surface area between the butt joint 12 of the rotating shaft 1 and the shaft hole 210 of the friction reed 21 and the two friction elastic arms 212 is halved, and the operation is convenient with only one hand, and the base 51 will not be directly lifted, so that To achieve the effect of easy opening and less effort; and when the user covers the cover plate 52 on the base 51, the two friction elastic arms 212 in the shaft hole 210 of the friction reed 21 can be used to provide the rotation shaft 1 to press down. Force component, and because the contact surface area between the butt joint 12 of the rotating shaft 1 and the shaft hole 210 of the friction reed 21 and the two friction elastic arms 212 is halved, and the torsion force generated by the cover plate 52 due to its own weight is enough to overcome the rotating shaft 1 The predetermined frictional force on the contact surface with the friction reed 21 has the function of automatically pressing down, so that the cover plate 52 can be easily and tightly closed on the base 51, and the stability can be fixed, the positioning is accurate, and the automatic pressing method can be used. To make the operation more convenient; in addition, the arc-guiding surface 121 on the docking part 12 of the rotating shaft 1 can also be rotated and pushed against the abutment part 2121 of the friction reed 21 friction elastic arm 212, so that it can be abutted against After the holding part 2121 is pushed against, it produces a large elastic resistance to form a good resistance and positioning effect with the rotating shaft 1. At this time, the vertical side wall surface 2151 of the concave part 215 of the friction spring 21 can also be used to move along the 3 shafts of the connecting seat body. The stop end 313 in the part 31 is used to limit the deformation and displacement of the shaft hole 210, so as to prevent the cover plate 52 from being automatically pressed down and closed on the base 51, and bounce off and tilt up because it cannot be tightly closed, thereby ensuring the stability of the overall use. performance and reliability.

Please refer to Fig. 3, Fig. 7 and Fig. 8 at the same time. It can be clearly seen from the figures that a rotating part 13 is further provided between the positioning part 11 and the docking part 12 of the rotating shaft 1, and is outside the rotating part 13. There are at least two tangent planes 131 arranged at intervals in a ring shape on the periphery, and when the rotating shaft 1 starts to rotate, the rotating part 13 can be rotated and pushed against the two friction elastic arms 212 and the shaft of the friction reed 21. The relative contact surfaces on the hole 210, and because the rotating part 13 only has two tangent planes 131 and will not directly form rotational friction with the inner wall of the shaft hole 210, the contact surface area of the rotating shaft device of the present invention is doubled to form a larger The predetermined friction force can be used by the user to move the cover plate 52 to any stop at a predetermined rotation angle between 15 degrees and 135 degrees, which is more accurate in positioning and will not cause deviation or shaking due to improper force application. .

The utility model mainly aims at rotating the rotating shaft 1 in the shaft hole 210 of the friction reed 21, and uses two friction elastic arms 212 to provide the downward pressure component of the rotating shaft 1, and the surface area of the rotating shaft is halved due to friction, and the cover plate 52 is added. The torsion force generated by its own weight is sufficient to overcome the predetermined frictional force and has the function of automatically pressing down, so that the cover plate 52 can be easily and tightly closed on the base 51, and when it is opened, the surface area of the frictional contact will also be halved. It can be easily and easily opened with one hand without much effort, and the effect of lightly opening and lightly closing is its main technical feature. The patent scope of the new model, therefore, the simple modifications and equivalent structural changes made by using the contents of the description and drawings of the utility model should still be included in the scope of the patent covered by the utility model.

Claims (5)

1. A rotating shaft device, especially a rotating shaft device that can be used to halve the surface area of the frictional contact when the rotating shaft rotates freely, has the function of automatically pressing down, and is convenient for light opening and light closing. It includes a rotating shaft, a friction reed set, a connecting Composed of a seat body and a receiving part, it is characterized in that: One side of the rotating shaft is provided with a positioning portion, and then the positioning portion extends toward the other side with a butt joint portion having an arc-guiding surface and a tangent plane; The friction reed group is composed of a plurality of friction reeds, and each friction reed has a shaft hole for the butt joint of the rotating shaft to pass through, and there are respectively formed holes in the deformation space where the shaft hole extends to the two sides. The arc-guiding surface rotates and pushes against the elastically deformed friction elastic arm, and the outer side of the shaft hole two is provided with a relatively inward necked part, and then expands outward to form a protruding part, which is formed on the other side away from the protruding part. have depressions; The connecting seat body has a shaft portion, and an accommodating space for accommodating the rotating shaft and the friction reed group is formed in the shaft portion. The resisting shoulder and the limiting end located below the resisting shoulder are provided with a stop end on the other side away from the limit end, and the limit end and the stop end are protrusions and depressions for friction reeds The part is elastically supported and positioned; One side of the receiving portion is provided with an engaging space for the rotating shaft to protrude from the outer side of the accommodating space of the connecting seat body to form an engaging and fixing space. 2. The rotating shaft device according to claim 1, characterized in that the rotating shaft is arranged at least four equidistant and two corresponding arc-guiding surfaces at intervals in a ring around the outer periphery of the butt joint, and two adjacent arc-guiding surfaces are arranged at intervals. A tangent plane is formed between the surfaces, which can reduce the contact surface area between the butt joint of the rotating shaft, the shaft hole of the friction reed and the friction elastic arm. 3. The rotating shaft device according to claim 1, characterized in that the rotating shaft is provided with a rotating part between the positioning part and the docking part, and at least two rotating parts are arranged at intervals in a ring on the outer periphery of the rotating part. The tangent plane that reduces the contact surface area between the rotating part of the rotating shaft, the shaft hole of the friction reed and the friction elastic arm. 4. The rotating shaft device according to claim 1, characterized in that the friction reed group is clamped and positioned with reed liners on the outer sides of the two friction reeds, and the shaft holes and deformation spaces of the friction reeds Lubricating oil is stored, and two friction elastic arms with different lengths are formed in the deformation space of the shaft hole, and then the end edge of the shorter friction elastic arm protrudes toward the shaft hole to provide a resisting portion for the shaft to rotate and resist. 5. The rotating shaft device according to claim 1, characterized in that the friction reed set is provided with a concave arc surface on the bottom side of the protruding part of the friction reed, which can be elastically deformed after the rotating shaft is pushed against by rotation, The concave part is formed with a vertical side wall surface that can limit the deformation and displacement of the shaft hole along the stop end in the accommodating space of the connecting seat body.

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