CN2685947Y - pivot device - Google Patents

Abstract

A pivot device is arranged at the pivot joint of two objects to control the opening and closing of the two objects; the utility model reduces or does not have torsion when the two objects are closed by redesigning the structure of the pivot device, thereby ensuring that the two objects are easy to be sealed; the utility model discloses a pivot device includes: the pivot shaft with a surface provided with a bevel face and a plurality of gaskets with open shaft holes for the pivot shaft to pass through, wherein the shaft hole is provided with a tangent plane corresponding to the bevel face of the pivot shaft, when the two objects are closed, the bevel face of the pivot shaft just corresponds to the tangent plane of the shaft holes of the gaskets, and the external diameter size and the size of the bevel face of the pivot shaft are just matched with the shaft holes and the tangent plane of the gaskets, so that the two objects can not generate continuous rebound stress due to the existence of friction force after being closed, and the possibility of fracture of the pivot joint of the two objects is reduced.

Description

pivot device

technical field

The utility model relates to a pivot device, which is mainly used in the relative opening and closing movement between two objects. By redesigning the pivot device, the torsion force of the two objects is reduced or has no torsion when they are closed, so that the two objects can be easily sealed.

Background technique

In order to adjust the opening and closing between the two objects, and to position the object to be opened and closed at any angle selected by the user, a pivot device that can generate stable torque is installed between the two objects, and this pivot device is Through the action of friction, a stable torsion force is generated between the pivot device and the two pivoted objects, so that the object can be positioned at a selected angle, such as the body of a notebook computer and its cover, that is, through the pivot The device is arranged between the main body and the outer cover of the notebook computer to control the opening angle between the main body and the outer cover of the notebook computer, so as to facilitate the use of the user.

The prior art related to the present utility model, as shown in U.S. Patent No. 5,697,125, discloses a pivot device that generates a stable torsion force through frictional force. The pivot device mainly includes a rotatable shaft column. A ring-shaped thin plate element is used for the shaft to pass through to provide stable torque, and a shaft sleeve is used to fix a plurality of annular thin-plate elements.

The two ends of the shaft column are used to install the object to be rotated (such as the body of the notebook computer and its cover), and the sleeve is arranged on another object (such as the body of the notebook computer). When the relative angle between the main bodies of the computer is determined, the frictional force between the outer surface of the shaft column and the inner ring surfaces of multiple ring-shaped thin elements, and the stable torsion force generated by positioning one end of the thin plate element on the sleeve, So that the shaft column can be positioned at the desired angle.

Although the existing pivot device provides a stable torsion force, the friction between the outer surface of the shaft column and the inner ring surfaces of multiple annular thin components still exists when the two objects are closed, so that the outer cover of the notebook computer Rebound, it is not easy to fit tightly with the body of the notebook computer, and it is necessary to exert force on both ends of the outer cover to completely close, which causes a relative rebound stress between the two objects. If this happens frequently, it is easy to cause damage to the pivot joint of the two objects.

Utility model content

The technical problem to be solved by the utility model is to make the two objects close tightly together without generating a rebound stress and causing damage to the pivot device when the two objects are closed.

The utility model comprises: a pivot shaft with a chamfered surface; and a plurality of identical gasket stacks, wherein each gasket includes an open shaft hole for the pivot shaft to pass through, and the shaft hole has a corresponding chamfered surface. A cut surface to match the beveled surface of the pivot; a fixing piece that can be assembled and matched with the pivot device; a fixing plate has a shaft hole for the pivot to pass through, and resists the spacer for the pivot to pass through slide.

When the two objects are closed, the beveled surface of the pivot corresponds to the tangent surface of the shaft hole of the washer, so that the friction force generated when the pivot rotates can be released to reduce the rebound stress caused by the friction force and make the object Bounce up to make the two parts tightly closed, reduce the damage of the pivot joint of the two parts, and prolong the service life.

Description of drawings

Fig. 1 is a three-dimensional outline schematic diagram of the utility model.

Fig. 2 is an exploded schematic view of the utility model.

Fig. 3-1, 3-2 are action diagrams of the present utility model.

Fig. 4 is a schematic diagram of an embodiment of the present invention.

Fig. 5 is a schematic diagram of another embodiment of the present utility model.

Detailed ways

The preferred embodiments and technical content of the present utility model are described below in conjunction with the accompanying drawings.

At first referring to Fig. 1, it is the three-dimensional appearance schematic diagram of the present utility model, comprises:

A pivot 11, which is a cylinder with a beveled surface 111; a fixing member 2, which has an accommodating space 21, in which the above-mentioned pivot 11 is pivotally arranged; a fixed plate 3, which has a circular The shaft hole 31 is used to sleeve the pivot shaft 11 and resist the entrance of the accommodating space 21 of the fixing member 2 .

Please refer to Fig. 2, which is an exploded schematic diagram of the utility model, including:

A plurality of spacers 12 with open shaft holes 121 are used for the pivot shaft 11 to pass through, wherein the shape of the open shaft holes 121 matches the shape of the surface of the pivot shaft 11, and the open shaft holes 121 correspond to the beveled surface of the pivot shaft 11 There is a cut surface 1211 at 111; the pivot 11 is fitted in the direction of the cut surface 111 through the cut surface 1211 of the open shaft hole 121 of a plurality of gaskets 12, so that the contact surface of the pivot 11 and the gasket 12 is closely matched; a fixed Part 2, which has an accommodating space 21 for the above-mentioned pivot 11 and gasket 12 to pivot therein, wherein a plurality of gaskets 12 are placed in the accommodating space 21 of the fixing member 2 in a stacked manner, and the pivot 11 retains a section protruding from the fixing part 2; a fixing plate 3, which has a circular shaft hole 31 to cover the pivot 11, and resists the entrance of the accommodating space 21 of the fixing part 2, so as to avoid the spacer 12 Slide out from the accommodation space 21.

Please refer to Figures 3-1 and 3-2, which are action diagrams of the present invention. When opening and closing the object (such as the cover of a notebook computer), the pivot 11 is driven to rotate in the open shaft hole 121 of the gasket 12 When turning to the cut surface 1211 of the open shaft hole 121 of the gasket 12 through the circular arc on the surface of the pivot 11, a larger friction force is generated due to the difference between the shape of the circular arc surface and the shape of the cut surface 1211 of the gasket 12, so that the gasket 12 is stretched outwards, and there is a frictional resistance effect between the friction surfaces in contact, so that the two objects can rotate and position stably relative to each other; The open shaft hole 121 rotates a circle, so that the beveled surface 111 of the pivot 11 just corresponds to the cut surface 1211 of the open shaft hole 121 of the washer 12, which will make the washer 12 recover from the stretched state. When the above-mentioned circular arc on the surface of the pivot shaft 11 rotates to the cut surface 1211 of the open shaft hole 121 of the washer 12, there is a frictional resistance between the frictional surfaces, and the frictional resistance can be released at this time.

In a preferred embodiment of the present invention, the diameter and width of the pivot shaft 11 will be slightly larger than the inner diameter of the open shaft hole 121 of the gasket 12, so that the pivot shaft 11 and the open shaft hole 121 of the gasket 12 are closely matched, and The radial width of the spacer 12 is slightly smaller than the inner diameter of the accommodating space 21 of the fixing part 2, so that when the spacer 12 is inserted into the accommodating space 21 of the fixing part 2, there will be an expansion gap, so that the pivot 11 can be positioned on the spacer. The open shaft hole 121 of 12 rotates, and when causing strut, there can be a considerable outward expansion space to stretch.

Please refer to Fig. 4, which is a schematic diagram of another embodiment of the present utility model. A rotating rod 4 is pivoted at the bottom of the pivot device, so that the pivot device of the present invention can rotate mutually due to the rotating rod 4, so that the opening and closing objects When (such as the outer cover of a notebook computer), it can not only be opened upwards, but also can be turned left or right by an appropriate angle after opening.

Please refer to FIG. 5, as shown in the figure, the pivot 11 is set into one end of the accommodating space 21 of the fixing member 2, and the diameter of the rod is reduced proportionally, and the direction of the beveled surface 111 of the extended pivot 11 also has a beveled surface. 112, and is equipped with a sleeve 5, which is used to cover the smaller diameter part of the pivot 11, wherein the inner wall of the sleeve 5 has a cut surface 52 corresponding to the chamfer 112, so that the sleeve 5 is sleeved on the pivot 11. The diameter of the rod is smaller In a small part, it is in a coupled state; and the outer wall of the sleeve 5 also has a beveled surface 51, so that the sleeve 5 is sleeved behind the pivot 11, and then the pivot 11 is passed through the circular shaft hole of the fixing plate 3 31 and the open shaft hole 121 of the gasket 12, so that the beveled surface 51 of the sleeve 5 can correspond to the cut surface 1211 of the open shaft hole 121, and finally set into the accommodation space 21 of the fixing part 2 to complete the pivot device. Assemble.

The above-mentioned sleeve 5 is sleeved on the pivot 11, so that when opening and closing the object (such as the cover of a notebook computer), the pivot 11 will not directly contact the open shaft hole 121 of the gasket 12, so that the pivot 11 When rotating, it constantly rubs against the cut surface 1211 of the open shaft hole 121, causing the pivot 11 to be easily worn and broken. The sleeve 5 with high structural strength is used to cover the pivot 11 to prolong the service life of the pivot 11.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the scope of the claims of the present utility model.

Claims (6)

1. A pivot device has: a pivot (11) and a plurality of gaskets (12) with open shaft holes (121) for the pivot (11) to penetrate; a housing space (21) ) with a fixed part (2) assembled with the gasket (12); a fixed plate (3), which has a circular shaft hole (31) to cover the pivot (11), and against stop the sliding of the gasket (12) on the pivot (11); It is characterized in that the pivot (11) has a chamfer (111), and the open shaft hole (121) of the gasket (12) has the same chamfer (111) as the pivot (11). ) with matching cut surfaces (1211). 2. The pivot device according to claim 1, characterized in that when the pivot (11) rotates, the shape of the circular arc surface is different from that of the section (1211) of the gasket (12), so that A larger frictional force is generated here, forcing the gasket (12) to stretch outwards, and when the chamfer (111) of the pivot (11) rotates to the When the cut surface (1211) of the open shaft hole (121) is opened, the state of the gasket (12) stretching outward is restored, thereby releasing the frictional force. 3. The pivot device according to claim 1, characterized in that the inner wall of the accommodating space (21) of the fixing member (2) matches the shape of the gasket (12), so that the gasket The sheet (12) can be arranged in the accommodating space (21) in a matched manner. 4. The pivot device according to claim 1, characterized in that the radial width of the gasket (12) is slightly smaller than the inner diameter of the accommodating space (21) of the fixing member (2), so that The gasket (12) has an expansion gap. 5. The pivot device according to claim 1, characterized in that a rotating rod (4) can be connected under the fixing member (2), so that the pivot device can rotate left and right. 6. The pivot device according to claim 1, characterized in that said pivot (11) is set at one end part of said accommodating space (21) of said fixing member (2), and its rod diameter Reduced and extended with a beveled surface (112), and sleeved with a sleeve (5), wherein the inner wall of the sleeve (5) has a cut surface (52) corresponding to the smaller diameter of the pivot (11) The chamfer (112) of the sleeve (5), and the outer wall of the sleeve (5) has a chamfer (51) corresponding to the chamfer (1211) of the open shaft hole (121) of the gasket (12).

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