JP3053545U - Pivot mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotating member in a moderately supported state, to prevent axial displacement of a pivot, and to maintain original pivotal quality by appropriately performing treatment according to an increase in the diameter of a cylindrical portion. Provides a pivot mechanism. SOLUTION: A first end portion 11 having a coupling hole 111 is provided.
And an oil groove 12 forming a spiral in a predetermined direction on the outer peripheral edge.
A pivot 10 containing a second end 12 having a 1 and a cylindrical, axially split tear 21 which forms a helix in a predetermined direction so that oil can be introduced from the outer periphery to the inner periphery. A bush 20 having an introduction slit 23 and a projection 22, a locking hole 34 capable of locking the projection 22, and a cylindrical portion 31 having a split 33 along an axial direction and capable of storing the bush 20; A rotating member 30 extending from the outer peripheral edge of the cylindrical portion 31 and having a flat plate portion 32 having a coupling hole 35.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a rotatable pivot mechanism interposed between a liquid crystal panel and a main body of a notebook computer, for example.

[0002]

[Prior art]

 Conventionally, there is a rotatable pivot mechanism interposed between a liquid crystal panel and a main body of a notebook personal computer as shown in FIG. Such a shaft 60 includes a first end 61 having a coupling hole 62 and a second end 63 having an oil groove 64 that forms a spiral in a predetermined direction on the outer peripheral edge, A cylindrical portion 71 having a tear 74 along the direction and capable of storing the first end portion 61 of the pivot 60; and a flat plate portion 72 extending from the outer peripheral edge of the cylindrical portion 71 and having a coupling hole 73. It comprises a rotating member 70. The second end 63 of the pivot 60 is inserted into the cylindrical portion 71 of the rotating member 70, and for example, a liquid crystal panel of a notebook computer is held at a predetermined position by a frictional force between the two. Further, oil is injected into the oil groove 64 of the second end 63 so as not to cause abrupt wear.

[0003]

[Problems to be solved by the invention]

 Conventionally, since the above configuration is adopted, in order to obtain a frictional force between the second end portion 63 of the pivot 60 and the cylindrical portion 71 of the rotating member 70, it is necessary to appropriately control the connection between the two. Must. This is closely related to manufacturing accuracy, and expensive production equipment is required to obtain high-density products, resulting in increased costs. Further, since there is no restricting member in the axial direction of the pivot 60, the second end 63 of the pivot 60 can slide with respect to the cylindrical portion 71 of the rotating member 70. In this case, for example, the liquid crystal panel of the notebook computer is easily displaced right and left.

[0004] The cylindrical portion 71 of the rotating member 70 is obtained by pressing a plate material, and thus has a weak configuration. When the pivot 60 swings for a long time, the diameter of the cylindrical portion 71 is expanded, and rattling occurs in the support state of the pivot 60 with respect to the cylindrical portion 71.

[0005] The present invention has been made in view of the above-mentioned problems, and has a gentle supporting state of a rotating member, can prevent displacement of a pivot in an axial direction, and can appropriately treat the rotating member in accordance with an increase in the diameter of a cylindrical portion. The purpose is to provide a pivot mechanism that can maintain the original pivot quality by placing.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a pivot having a first end having a coupling hole, a second end having an oil groove forming a spiral in a predetermined direction on an outer peripheral edge, and a cylinder. A bush having a slit along the axial direction, forming a spiral in a predetermined direction, and having an introduction slit and a projection capable of introducing oil from the outer peripheral edge to the inner peripheral edge; The rotating member includes a cylindrical portion having a stop hole and a tear along the axial direction and capable of storing the bush, and a flat plate portion extending from the outer peripheral edge of the cylindrical portion and having a coupling hole. The present invention provides a pivot mechanism characterized by the following.

When the second end of the pivot is inserted into the inner peripheral edge of the bush, the bush has a tear along the axial direction, and the bush is slightly expanded by the insertion of the pivot. Provides strong frictional force between In addition, such a strong frictional force can be obtained in the connection between the bush and the cylindrical portion of the rotating member. Therefore, if a breach is formed in the bush or the cylindrical portion of the rotating member, there is elasticity of adjustment, and the limit of precision is larger than before. Further, since the bush is formed with a projection which can be locked to the cylindrical portion of the rotating member, the movement of the pivot in the axial direction can be restricted by the locking of the projection, thereby providing a high quality pivoting mechanism. it can.

Further, the rotating member has two cylindrical portions, and the tears formed in each of the cylindrical portions along the axial direction are deviated to both right and left with respect to a portion adjacent to the flat plate portion and the cylindrical portion. By forming one each, the directions of deformation of the two cylindrical portions are reversed, whereby the balance of the amounts of deformation of the two cylindrical portions can be improved.

In addition, by making the spiral directions of the oil groove and the introduction slit opposite to each other, the acting force along the spiral direction is caused to collide, so that the rotation of the rotating member is biased only in one of the front and rear directions. , To provide a more preferable rotation state.

[0010] A second end of the pivot may be provided with an inner hole having an internal thread therein, and the end having the inner hole may be divided into two parts along the axial direction. In addition to forming the groove, the distal end portion further has an adjusting member having a screw thread that can be screwed into the inner hole of the pivot, so that even if the diameter of the cylindrical portion is enlarged, the adjusting member can be used. Adjustments can still provide a favorable pivotal condition.

[0011]

[Preferred Embodiment of Invention]

 Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. (First Embodiment) FIG. 1 is an exploded perspective view showing a first embodiment of the present invention, and FIG. 2 is a side view showing the first embodiment of the present invention. In the figure, the pivot mechanism according to the first embodiment includes a first end 11 having a coupling hole 111 and a second end 12 having an oil groove 121 that forms a spiral in a predetermined direction on the outer peripheral edge. And a guide slit 23 and a projection 22 which are cylindrical, have a slit 21 along the axial direction, form a spiral in a predetermined direction, and can introduce oil from the outer peripheral edge to the inner peripheral edge. A cylindrical portion 31 having a bush 20, a locking hole 34 for locking the protrusion 22, and a tear 33 along the axial direction, and capable of storing the bush 20, and an outer peripheral edge of the cylindrical portion 31. And a rotating member 30 having a flat portion 32 having a coupling hole 35.

When the second end 12 of the pivot 10 is inserted into the inner peripheral edge of the bush 20, 20, the bush 20, 20 has a split 21 along the axial direction. 20 is slightly expanded by the insertion of the pivot 10, thereby providing a strong frictional force between the bushes 20, 20 and the pivot 10. Also, the coupling between the bushes 20, 20 and the cylindrical portions 31, 31 of the rotating member 30 can obtain such a strong frictional force. Therefore, if the crevices 33, 33 are formed in the bushings 20, 20, and the cylindrical portions 31, 31 of the rotating member 30, there is elasticity of adjustment, so that the limit of precision is larger than before. Further, since the bushes 20, 20, the projections 22, 22, which can be engaged with the cylindrical portions 31, 31, of the rotating member 30, are formed, the locking holes of the cylindrical portions 31, of the projections 22, 22, are formed. The locking of the shaft 34 restricts the axial movement of the pivot 10, thereby providing a high-quality pivot mechanism.

The tears 33, 33 of the cylindrical portions 31, 31 of the rotating member 30 are respectively formed on both left and right sides of the adjacent portion between the flat plate portion 32 and the cylindrical portions 31, 31. This makes it possible to reverse the deformation directions of the two cylindrical portions 31, 31, thereby improving the balance between the deformation amounts of the two cylindrical portions 31, 31.

Further, by making the spiral directions of the oil groove 121 and the introduction slit 23 opposite to each other, the acting force along the spiral direction is collided, and the rotation of the rotating member 30 is biased only in one of the front and rear directions. In this way, a more preferable rotation state is provided.

(Second Embodiment) FIGS. 3 and 4 show a second embodiment of the present invention. In this embodiment, since the configuration of the second end 12 of the pivot 10 is changed, only this portion will be described. Other parts are the same as those of the first embodiment, and the description thereof will be omitted.

In this embodiment, the end of the second end 12 of the pivot 10 has an inner hole 120 having an internal thread 124 therein, and the second end 12 having the inner hole 120 has a shaft. A dividing groove 123 is formed along the direction to divide the end into two parts, and an adjusting member 40 having a thread which can be screwed into the inner hole 120 of the pivot 10 is provided at the distal end. Thus, even if the diameter of the cylindrical portions 31 is increased, adjustment by the adjusting member 40 can still provide a preferable pivotal state.

[0017]

[Effect of the invention]

 Since the present invention has the above-mentioned configuration, a strong frictional force can be provided by the interposition of the bush, and a more preferable fastening state is provided. In addition, by disposing the split of the cylindrical portion on the opposite side and reversing the helical direction of the oil groove and the introduction slit of the bush, it is possible to balance the acting force of the pivotal connection. Long-term use of the mechanism can be secured. Further, by providing the adjusting structure and the adjusting member, the service life of the pivoting mechanism can be further extended.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.

FIG. 2 is a side view showing the first embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 4 is a side view including a partial cross section showing a second embodiment of the present invention.

FIG. 5 is a side view including a partial cross section showing a second embodiment of the present invention.

FIG. 6 is a perspective view showing a conventional pivot mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Axis 11 1st end part 111 Coupling hole 12 2nd end part 120 Inner hole 121 Oil groove 123 Dividing groove 124 Female thread 20 Bush 21 Rip 22 Projection 23 Introduction slit 30 Rotating member 31 Cylindrical part 32 Flat part 33 Rip 34 Locking hole 35 Coupling hole 40 Adjusting member

Claims (5)

[Utility model registration claims] 1. A first end 11 having a coupling hole 111
And an oil groove 12 forming a spiral in a predetermined direction on the outer peripheral edge.
A pivot 10 containing a second end 12 having a 1 and a cylindrical, axially split tear 21 which forms a helix in a predetermined direction so that oil can be introduced from the outer periphery to the inner periphery. A bush 20 having an introduction slit 23 and a projection 22; a locking hole 34 capable of locking the projection 22; and a cylindrical portion 31 having an axial split 33 and capable of storing the bush 20, A pivot member extending from an outer peripheral edge of the cylindrical portion and having a flat plate portion having a coupling hole. 2. The rotating member 30 includes two cylindrical portions 31,
A plurality of axially formed tears 33, 33 formed in the respective cylindrical portions 31, 31 are formed on both the left and right sides of the adjacent portion between the flat plate portion 32 and the cylindrical portions 31, 31, respectively. The pivot mechanism according to claim 1, wherein the pivot mechanism is provided. 3. The oil groove 121 and the introduction slit 23.
3. The pivot mechanism according to claim 1, wherein the respective spiral directions are opposite to each other. 4. 4. A second end (12) of the pivot (10) having an internal bore (120) having an internal thread (124) therein.
The end having 0 has a dividing groove 123 for dividing the end into two parts along the axial direction.
4. The pivot mechanism according to 2 or 3. 5. The pivoting mechanism according to claim 3, further comprising an adjusting member having a thread which can be screwed into the inner hole of the pivot at the distal end. Pivot mechanism.