JP2009286165A - Turning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a turning device excellent in turning operability. <P>SOLUTION: Between a turning shaft 11 of the turning device and a turning bearing 21, an elastic body 3 fixed to one of the turning shaft 11 and the turning bearing 21 and a slide body 4 comprising a resin material having small friction coefficient and fixed to the other of the turning shaft 11 and the turning bearing 21 are interposed, and the elastic body 3 is elastically slide-contacted with the slide body 4. Ununiformness of a dimension of the turning shaft 11 and the turning bearing 21 is absorbed by elastic deformation of the elastic body 3 and the elastic body 3 is slide-contacted with the slide body 4 comprising the resin material having small friction coefficient, thereby, turning load is reduced. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotating device having a base body and a rotating body that is rotatable with respect to the base body.

  As a rotation device having a base body and a rotation body, various devices have been conventionally known (for example, see Patent Documents 1 and 2). Patent Documents 1 and 2 introduce a vehicle console box which is a kind of rotating device. The vehicle console box has a box-like console box body (base body) and a lid (rotating body) for opening and closing the opening of the console box body. One of the console box body and the lid has a rotation shaft, and the other has a rotation bearing that pivotally supports the rotation shaft. For this reason, the lid rotates between an open position for opening the opening and a closed position for closing the opening.

  By the way, in this type of rotating device, when the rotating shaft and the rotating bearing are in pressure contact with each other, the sliding resistance between the rotating shaft and the rotating bearing is increased, and the load when the rotating body is rotated (hereinafter referred to as “rotating body”). , Called a rotational load). Such a rotation device is inferior in rotation operability. On the other hand, when a gap is formed between the rotation shaft and the rotation bearing, the rotation load is reduced, but there is a problem that the rotation body rattles the base body. Therefore, it is necessary to mold the rotating shaft and the rotating bearing with high dimensional accuracy.

  As introduced in Patent Document 1, a clearance is formed between the rotation shaft and the rotation bearing, and an elastic body such as a spring is interposed in the clearance, thereby improving the rotation operability of the rotation device. A method for improvement has also been proposed. In this case, the elastic body is fixed to one of the rotation shaft and the rotation bearing, and the elastic body is brought into sliding contact with the other of the rotation shaft and the rotation bearing. And the rotational operativity of a rotation apparatus is improved by absorbing the dimension variation of a rotation body and a rotation bearing by the elastic deformation of an elastic body.

However, even in this case, if the rotation bearing is not molded with high accuracy, the elastic body may be caught by the rotation bearing or the rotation shaft, so that the rotation load becomes large and the rotation operability may not be sufficiently improved. is there. For this reason, the rotation apparatus excellent in rotation operativity is desired.
JP 2000-343935 A JP 2005-349936 A

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotating device having excellent rotating operability.

  The rotating device of the present invention that solves the above problems is a rotating device having a base body 1 and a rotating body 2 that is rotatable with respect to the base body 1, and the base body 1 and the rotating body 2. One has a rotating shaft 11, the other has a rotating bearing 21 that pivotally supports the rotating shaft 11, and the rotating shaft 11 and the rotating shaft 21 are between the rotating shaft 11 and the rotating bearing 21. An elastic body 3 fixed to one of the bearings 21 and a slide made of a resin material having a smaller friction coefficient than the base body 1 and the rotating body 2 and fixed to the other of the rotating shaft 11 and the rotating bearing 21. The elastic body 3 is elastically slidably in contact with the sliding body 4.

  The rotating device of the present invention preferably includes any of the following (1) to (3), and more preferably includes a plurality of (1) to (3).

  (1) The elastic body 3 is made of a metal spring.

  (2) The sliding body 4 has a ring shape covering the inner peripheral surface of the rotating bearing 21 and is fixed to the rotating bearing 21, and the elastic body 3 is at least on the outer peripheral surface of the rotating shaft 11. One of the sliding body 4 and the elastic body 3 has a convex lock projection 60 that covers a part and is fixed to the rotating shaft 11, and the other has a concave projection and is engaged with the lock projection 60. A locking recess 54 is provided.

  (3) The sliding body 4 is made of a resin material containing at least one selected from POM, PA, and PTFE.

  According to the rotating device of the present invention, the elastic body interposed between the rotating shaft and the rotating bearing is elastically deformed to absorb the dimensional variation between the rotating shaft and the rotating bearing. Therefore, the rotating device of the present invention is excellent in rotating operability without forming the rotating shaft and the rotating bearing with high dimensional accuracy.

  Further, the elastic body in the rotating device of the present invention is in sliding contact with the sliding body. Since the friction coefficient of the sliding body is smaller than the friction coefficient of the base body and the friction coefficient of the rotating body, the sliding resistance between the elastic body and the sliding body is small. Therefore, the elastic body smoothly contacts the sliding body without molding the sliding body with high dimensional accuracy. Also by this, the rotation device of the present invention is excellent in rotation operability.

  Incidentally, even when the base body or the entire rotating body is formed of a resin material having a small friction coefficient (hereinafter referred to as a low friction resin material), the sliding resistance between the rotating shaft and the rotating bearing is reduced, and It is considered that the dynamic load is reduced and the rotating operability of the rotating body is improved. However, low friction resin materials represented by POM (polyacetal) and the like tend to shrink greatly after molding. For this reason, the base body or the rotating body made of the low friction resin material has large dimensional variations, and the sliding resistance between the rotating shaft and the rotating bearing may be increased. Therefore, in this case, it is difficult to improve the rotating operability of the rotating member. According to the rotating device of the present invention, the base body that is a large member or the entire rotating body is not formed of the low friction resin material, but only the sliding body that is a small member is formed of the low friction resin material. The dimensional variation of the entire rotation device can be minimized. For this reason, the rotation device of the present invention can greatly reduce the rotation load and is excellent in rotation operability.

  The rotating device of the present invention having the above (1) is excellent in durability since it can suppress wear of the elastic body even when used for a long period of time. Further, if the elastic body is not worn, even if the sliding body is worn, a change in the size of the sliding body can be absorbed by elastic deformation of the elastic body. For this reason, according to the rotating apparatus of the present invention having the above (1), both durability and rotating operability can be achieved. Furthermore, metal springs are difficult to plastically deform even at high temperatures. For this reason, the rotation device of the present invention having the above (1) exhibits excellent rotation operability and durability even in a vehicle interior in summer, for example.

  The rotating device of the present invention having the above (2) can lock the rotating body at a predetermined position. For example, when an opening is provided in the base body and the opening of the base body is opened by rotating the rotating body above the base body, the rotating body rotates downward (that is, the direction in which the opening is closed) by its own weight. Try to move. For this reason, in order to keep opening, it is necessary to provide a mechanism for locking the rotating body above the base body. According to the rotating device of the present invention having the above (2), since the rotating body can be locked at a predetermined position by the elastic body and the sliding body, a mechanism for locking the rotating body is not required separately. For this reason, the rotating device of the present invention having the above (2) can reduce the number of parts and can be manufactured at low cost.

  The rotating device of the present invention having the above (3) is further excellent in rotating operability. This is because the friction coefficients of POM, PA, and PTFE are sufficiently small, so that the rotation operability of the rotation device can be further improved by using these as the material of the sliding body.

  Hereinafter, the rotation device of the present invention will be described by way of example.

(Example)
The turning device of the embodiment is a console box mounted on a vehicle. The rotating device of the embodiment includes the above (1) to (3). FIG. 1 is an exploded perspective view schematically showing main components of the rotating device of the embodiment. 2 to 7 are explanatory views for explaining the operations of the rotation shaft, the rotation bearing, the elastic body, and the sliding body in the rotation device of the embodiment.

  As shown in FIG. 1, the rotating device of the embodiment has a base body 1, a rotating body 2, two elastic bodies 3, and two sliding bodies 4.

  The base body 1 in the embodiment is a console box body, and has a box-shaped case portion 10 that opens upward, and a rotating shaft 11 that is integrated with the rear portion of the case portion 10. The rotation shaft 11 includes a left rotation shaft 12 and a right rotation shaft 13. The left rotation shaft 12 is integrated with the rear portion of the left side wall of the case body and protrudes to the right. The right rotation shaft 13 is integrated with the rear portion of the right side wall of the case body and protrudes to the left. The right rotation shaft 13 and the left rotation shaft 12 face each other. Further, the base portion 14 of the right rotation shaft 13 and the left rotation shaft 12 has a substantially elliptical cross section, and the end portion 15 has a substantially circular cross section. The base body 1 is made of ABS.

  The rotating body 2 in the embodiment is a lid that opens and closes the opening of the base body 1, and has a substantially plate-shaped rotating main body portion 20 and a bottomed substantially true cylindrical shape, and is integrated with a rear portion of the rotating main body portion 20. And a turning bearing 21 that is made into a single piece. The rotation bearing 21 includes a left rotation bearing 22 integrated with the left rear portion of the rotation main body 20 and a right rotation bearing 23 integrated with the right rear portion of the rotation main body portion 20. The right turning bearing 23 opens to the right, and the left turning bearing 22 opens to the left. Groove portions 24 extending in the left-right direction are formed on the inner peripheral walls of the right rotation bearing 23 and the left rotation bearing 22, respectively. A through hole 25 is formed at the bottom of the right rotation bearing 23 and the left rotation bearing 22. The rotating body 2 is made of ABS.

  The left elastic body 30 that is one of the elastic bodies 3 and the left sliding body 40 that is one of the sliding bodies 4 are interposed between the left rotation shaft 12 and the left rotation bearing 22. The right elastic body 31 that is the other of the elastic bodies 3 and the right sliding body 41 that is the other of the sliding bodies 4 are interposed between the right rotation shaft 13 and the right rotation bearing 23.

  The right elastic body 31 and the left elastic body 30 are made of a metal leaf spring having a curved band shape. The attachment portions 50 that are substantially central portions of the right elastic body 31 and the left elastic body 30 are each curved in a substantially elliptical arc shape. Further, in the right elastic body 31 and the left elastic body 30, the two sliding contact portions 51 located on both end sides of the attachment portion 50 are each curved in a substantially true arc shape.

  As shown in FIG. 2, both end portions (first end portion 52 and second end portion 53) of the right elastic body 31 and the left elastic body 30 protrude inward. The two sliding contact portions 51 are respectively formed with recesses (lock recess 54 and sub-recess 55) that are recessed inward. The lock recess 54 is located on the first end 52 side, and the sub-recess 55 is located on the second end 53 side. The base portion 14 of the right rotation shaft 13 is inserted into the attachment portion 50 of the right elastic body 31. For this reason, the right elastic body 31 covers a part of the outer peripheral surface of the right rotation shaft 13 and is fixed to the right rotation shaft 13. The base portion 14 of the left rotation shaft 12 is inserted into the attachment portion 50 of the left elastic body 30. For this reason, the left elastic body 30 covers a part of the outer peripheral surface of the left rotating shaft 12 and is fixed to the left rotating shaft 12.

  As shown in FIG. 1, the right sliding body 41 and the left sliding body 40 are made of POM and have a substantially true cylindrical shape with a bottom. As shown in FIG. 2, lock convex portions 60 and load adjusting portions 61 are formed on the inner peripheral walls of the right sliding body 41 and the left sliding body 40, respectively. The lock convex part 60 and the load adjustment part 61 protrude inward. The load adjusting portion 61 is separated from the lock convex portion 60 in the circumferential direction of the sliding body 4. The protruding height of the load adjusting portion 61 is gradually increased toward the lock convex portion 60. In addition, ribs 69 extending in the left-right direction are formed on the outer peripheral walls of the right sliding body 41 and the left sliding body 40, respectively. The rib 69 of the right sliding body 41 enters the groove portion 24 of the right rotation bearing 23. For this reason, the right sliding body 41 is fixed to the right rotation bearing 23. Further, the rib 69 of the left sliding body 40 enters the groove portion 24 of the left rotation bearing 22. For this reason, the left sliding body 40 is fixed to the left rotation bearing 22.

  The base body 1 and the rotating body 2 are integrated by the right rotating shaft 13 being pivotally supported by the right rotating bearing 23 and the left rotating shaft 12 being pivotally supported by the left rotating bearing 22. The end 15 of the right turning shaft 13 is inserted into the through hole 25 of the right turning bearing 23, and the end 15 of the left turning shaft 12 is inserted into the through hole 25 of the left turning bearing 22. The right elastic body 31 is held inside the right sliding body 41 in a slightly elastically deformed state. The left elastic body 30 is also held inside the left sliding body 40 in a slightly elastically deformed state. Therefore, the sliding contact portion 51 of the right elastic body 31 is elastically in contact with the inner peripheral wall of the right sliding body 41, and the sliding contact portion 51 of the left elastic body 30 is elastically in contact with the inner peripheral wall of the left sliding body 40.

  Hereinafter, the operation of the rotating device of the embodiment will be described.

  The rotating body 2 in the rotating device of the embodiment rotates between the closed position for closing the opening of the base body 1 and the open position for opening the opening of the base body 1 with the end 15 of the rotating shaft 11 as the center. To do. When the rotating body 2 is rotated from the closed position toward the open position, the sliding body 4 rotates in the clockwise direction in FIGS. When the rotating body 2 is rotated from the closed position toward the open position, the sliding body 4 rotates counterclockwise in FIGS. 2 to 7 with respect to the elastic body 3. Since the elastic body 3 is in elastic contact with the sliding body 4, when the rotating body 2 rotates, the elastic body 3 elastically slides against the sliding body 4.

  When the rotating body 2 is disposed at the closed position, the second end portion 53 of the elastic body 3 is disposed above the first end portion 52 as shown in FIG. The concave portion (sub-recessed portion 55) located on the second end portion 53 side is disposed on the rear side in the clockwise direction of the second end portion 53. The lock recess 54 is disposed on the front side of the first end 52 in the clockwise direction.

  At this time, the load adjusting portion 61 of the sliding body 4 enters the sub-recessed portion 55 of the elastic body 3. In addition, a portion of the sliding body 4 located between the load adjusting portion 61 and the lock convex portion 60 (hereinafter referred to as a retracting portion 62) has a sub-recessed portion 55 in the sliding contact portion 51 of the elastic body 3. And a portion located between the second end portion 53 (referred to as a second boundary portion 57) is inserted.

  When the rotating body 2 is rotated from the closed position toward the open position, the load adjusting unit 61 faces the second boundary portion 57 in the initial stage of opening rotation shown in FIG. Since the load adjusting portion 61 protrudes inward, the portion of the elastic body 3 on the second end portion 53 side is elastically deformed (compressed). For this reason, the second boundary portion 57 strongly contacts the load adjusting portion 61. Accordingly, at this time, the rotational load temporarily increases.

  In the middle of the opening rotation shown in FIG. 4, the load adjusting portion 61 moves to the front side in the clockwise direction of the second boundary portion 57, so that the second boundary portion 57 gets over the load adjusting portion 61. For this reason, the slidable contact portion 51 elastically contacts a portion (general portion) other than the lock convex portion 60 and the load adjusting portion 61 in the sliding body 4. Accordingly, the rotational load at this time is smaller than when the second boundary portion 57 is elastically in contact with the load adjusting portion 61.

  At the end of the opening rotation shown in FIG. 5, the lock convex portion 60 of the sliding body 4 faces a portion (referred to as a first boundary portion 56) between the first end portion 52 and the lock concave portion 54 of the elastic body 3. To do. Since the lock convex portion 60 protrudes inward, the portion on the first end portion 52 side in the elastic body 3 is elastically deformed (compressed) at this time, and the first boundary portion 56 is the lock convex portion 60. Strongly touch the ball. Therefore, also at this time, the rotational load temporarily increases.

  As shown in FIG. 6, when the rotating body 2 is arranged at the open position, the lock convex portion 60 moves to the front side in the clockwise direction of the first boundary portion 56 and faces the lock concave portion 54. Therefore, the first boundary portion 56 gets over the lock convex portion 60, and the lock convex portion 60 enters the lock concave portion 54. Accordingly, at this time, the lock concave portion 54 and the lock convex portion 60 are engaged, and the rotating body 2 is locked in the open position. At this time, the first boundary portion 56 enters the retracting portion 62.

  When the rotating body 2 is rotated from the open position toward the closed position, the first boundary portion 56 rides on the lock convex portion 60 at the initial stage of the closed rotation, so that the rotational load temporarily increases. In the middle of the closed rotation, since the first boundary portion 56 gets over the lock projection 60, the rotation load is reduced again.

  At the end of the closing rotation shown in FIG. 7, the load adjustment unit 61 faces the second boundary portion 57. The protruding height of the load adjusting portion 61 gradually increases toward the lock convex portion 60 (that is, toward the front side in the counterclockwise direction). For this reason, the elastic contact strength with respect to the load adjustment part 61 of the 2nd boundary part 57 becomes large gradually at this time, and a rotational load becomes large gradually. When the rotating body 2 is disposed at the closed position, the second boundary portion 57 gets over the load adjusting portion 61 and enters the retracting portion 62 as shown in FIG.

  According to the rotating device of the embodiment, the elastic body 3 is interposed between the rotating shaft 11 of the base body 1 and the rotating bearing 21 of the rotating body 2. The elastic body 3 is elastically deformed to absorb the dimensional variation between the rotation shaft 11 and the rotation bearing 21. For this reason, the rotation device of the embodiment exhibits excellent rotation operability without forming the rotation shaft 11 and the rotation bearing 21 with high dimensional accuracy.

  Further, the elastic body 3 in the rotating device of the embodiment is in sliding contact with the sliding body 4. Since the sliding body 4 is made of a low friction coefficient material POM, the frictional resistance between the sliding body 4 and the elastic body 3 is small. In other words, the elastic body 3 and the sliding body 4 are in sliding contact smoothly. For this reason, the rotation load in the rotation device of the embodiment is small. Further, the sliding body 4 made of the low friction coefficient material smoothly contacts the elastic body 3 even if the dimensional accuracy is inferior. This also improves the rotation operability of the rotation device of the embodiment.

  In addition, since only the sliding body 4 that is a part of the rotating device is formed of a low friction coefficient material, the dimensional variation of the entire rotating device can be minimized. For this reason, the variation of the rotation load can be minimized, and the backlash between the rotation body 2 and the base body 1 due to the size variation can be suppressed.

  Furthermore, in the rotation device of the embodiment, the rotation body 2 is locked in the open position by the engagement of the lock projection 60 of the sliding body 4 and the lock recess 54 of the elastic body 3. For this reason, it is not necessary to separately provide a locking mechanism for locking the rotating body 2, and the manufacturing cost of the rotating device can be reduced.

  By the way, the rotating body 2 in the rotating device of the embodiment is closed and rotated by its own weight. For this reason, the rotation speed of the rotating body 2 is accelerated at the end of the closing rotation. For this reason, when arrange | positioning the rotary body 2 in a closed position, the rotary body 2 may collide with the base body 1 and may generate a big noise. In the rotating device of the embodiment, the load adjusting unit 61 is provided on the sliding body 4, whereby the rotating load at the end of the closing rotation can be gradually increased, and acceleration of the rotating speed of the rotating body 2 can be suppressed. . For this reason, the noise mentioned above can be suppressed.

  Further, when the rotating body 2 is disposed at the open position or the closed position, the first end portion 52 and the second end portion 53 of the elastic body 3 are convex portions (the lock convex portion 60 and the load adjusting portion 61). And then comes into elastic contact with the general part including the retracting part 62. For this reason, it can suppress that a big load is added to the elastic body 3 for a long time, and the plastic deformation of the elastic body 3 can be suppressed.

  Furthermore, since the sliding body 4 in the rotating device of the embodiment has a cylindrical shape (that is, an endless ring shape), it is difficult to be deformed. For this reason, the sliding body 4 is difficult to be displaced with respect to the rotation bearing 21 and is in sliding contact with the elastic body 3 with high reliability.

  In the rotating device of the embodiment, POM is used as the material of the sliding body 4, but the material of the sliding body 4 in the rotating device of the present invention is PA (polyamide), PTFE (polytetrafluoroethylene), or the like. The material can be preferably used. These materials have a low coefficient of friction and are excellent in friction characteristics such as self-lubricating properties and wear resistance. In addition, as a material of the sliding body 4, you may use what mix | blended the lubricant etc. with resin materials, such as POM. In this case, since the self-lubricating property of the sliding body 4 is improved, the sliding resistance between the sliding body 4 and the elastic body 3 is further reduced, and the rotating operability is further improved.

  The sliding body 4 in the rotating device of the embodiment has an endless ring shape, but the shape of the sliding body 4 in the rotating device of the present invention is not limited to this. For example, the sliding body 4 may have a ring shape with ends (for example, a C shape) or other shapes. In addition, the sliding body 4 in the rotating device of the embodiment is formed separately from the rotating bearing 21, but may be formed integrally with the rotating bearing 21 by a method such as two-color molding or insert molding. Further, the sliding body 4 may be fixed to the rotating shaft 11.

  The rotating body 2 in the rotating device of the embodiment is superimposed above the base body 1, but the position of the rotating body 2 and the base body 1 in the rotating device of the present invention is not limited to this.

It is a disassembled perspective view which represents typically the main components of the rotation apparatus of an Example. It is explanatory drawing explaining operation | movement of the rotation axis | shaft in the rotation apparatus of an Example, a rotation bearing, an elastic body, and a sliding body. It is explanatory drawing explaining operation | movement of the rotation axis | shaft in the rotation apparatus of an Example, a rotation bearing, an elastic body, and a sliding body. It is explanatory drawing explaining operation | movement of the rotation axis | shaft in the rotation apparatus of an Example, a rotation bearing, an elastic body, and a sliding body. It is explanatory drawing explaining operation | movement of the rotation axis | shaft in the rotation apparatus of an Example, a rotation bearing, an elastic body, and a sliding body. It is explanatory drawing explaining operation | movement of the rotation axis | shaft in the rotation apparatus of an Example, a rotation bearing, an elastic body, and a sliding body. It is explanatory drawing explaining operation | movement of the rotation axis | shaft in the rotation apparatus of an Example, a rotation bearing, an elastic body, and a sliding body.

Explanation of symbols

1: Base body
11, 12, 13: Rotating shaft 21, 22, 23: Rotating bearings 3, 30, 31: Elastic body 4, 40, 41: Slide body 54: Lock recess 60: Lock protrusion

Claims (4)

A rotating device having a base body and a rotating body rotatable relative to the base body,
One of the base body and the rotating body has a rotating shaft, and the other has a rotating bearing that pivotally supports the rotating shaft,
Between the rotating shaft and the rotating bearing, an elastic body fixed to one of the rotating shaft and the rotating bearing, and a resin having a smaller friction coefficient than the base body and the rotating body. A sliding body made of a material and fixed to the other of the rotating shaft and the rotating bearing is interposed,
The rotating device characterized in that the elastic body is in sliding contact with the sliding body elastically.   The rotating device according to claim 1, wherein the elastic body is made of a metal spring. The sliding body has a ring shape covering an inner peripheral surface of the rotating bearing and is fixed to the rotating bearing;
The elastic body covers at least a part of the outer peripheral surface of the rotating shaft and is fixed to the rotating shaft;
The rotating device according to claim 2, wherein one of the sliding body and the elastic body has a locking convex portion that has a convex shape, and the other has a concave shape that has a concave shape and engages with the locking convex portion.   The said sliding body is a rotation apparatus as described in any one of Claims 1-3 which consists of a resin material containing at least 1 type chosen from POM, PA, and PTFE.

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