JP2013023376A - Lifting mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lifting mechanism for performing continuous erecting operation and inclining operation without reattaching a shaft serving as the center of performing the erecting operation of a link.SOLUTION: The lifting mechanism includes: a first circular arc part C1 for guiding a second regulation part 43 so as to move on a circular arc with a first regulation part 33 as the center; a second circular arc part C2 for guiding the second regulation part 43 so as to move on a circular arc with a turning shaft 31 as the center; and a third circular arc part C3 for guiding the first regulation part 33 so as to move on the circular arc with the turning shaft 31 as the center. The first circular arc part C1 and the second circular arc part C2 are continuously provided. When a driven member 6 is moved from an initial position to a prescribed height, the first regulation part 33 is not moved relative to a second link 4 and the second regulation part 43 moves the first circular arc part C1. When the driven member 6 is rotated from a rotation initial position to a prescribed angle, the first regulation part 33 moves the third circular arc part C3 and the second regulation part 43 moves the second circular arc part C2.

Description

  The present invention relates to an elevating mechanism that performs a continuous standing operation and tilting operation without changing a shaft that is a center for performing a standing operation of a link.

  As a conventional lifting mechanism, for example, a lifting / lowering mechanism of a lifting / lowering toilet seat that lifts and lowers the toilet seat of a toilet, the one shown in FIGS. 4 to 6 is disclosed (see Patent Document 1). As shown in FIG. 4, the elevating mechanism 100 used in this elevating toilet seat has a common hole in each of the link members 101 and 102 in the overlapping portion of the two link members 101 and 102, and the common hole is in a horizontal standby state. The posture common holes 101a and 102a and the forward tilt standby posture common holes 101b and 102b are provided, and the connecting shaft 103 is removed from one of the common holes and fitted into the other.

  That is, as shown in FIG. 4, when the toilet seat base 104 to which the toilet seat is fixed is in a substantially horizontal sitting posture, the horizontal standby posture common holes 101a and 102a are positioned so that the holes overlap. Moreover, the forward tilt standby posture common holes 101b and 102b are also positioned so that the holes overlap. In FIG. 4, the connecting shaft 103 is inserted into the horizontal standby posture common holes 101 a and 102 a, and the two link members 101 and 102 pivot around the connecting shaft 103. When the screw member 105 is rotated by the drive unit M such as an electric motor, the left and right nut members 106 that mesh with the screw member 105 move on the screw member 105 in a direction in which they are close to each other (see FIG. 5). The link members 101 and 102 having one ends connected to the left and right nut members 106 pivot around the left and right shaft members 107, and the link members 101 and 102 are connected to the horizontal standby posture common holes 101a and 102a. Is inserted, the toilet seat base 104 moves vertically. Further, as shown in FIG. 5, the right nut member 106 moves leftward in FIG. 5, so that the entire toilet seat base 104 is not only vertically but also forward (leftward in FIG. 5). Moving.

  On the other hand, when it is desired to tilt the toilet seat forward, it is shown in FIG. 6 by driving the drive unit M after replacing the connecting shaft 103 with the forward tilt standby posture common holes 101b and 102b from the state of FIG. As described above, the link members 101 and 102 can turn around the forward tilt standby posture common holes 101b and 102b into which the connecting shaft 103 is inserted, so that the forward tilt posture can be obtained.

Japanese Patent No. 4320221

  However, the lifting mechanism 100 described in Patent Document 1 confirms that the toilet seat base 104 is in the sitting posture shown in FIG. It must be inserted into 101a, 102a. Further, when it is desired to tilt the toilet seat base 104 forward, the connecting shaft 103 must be inserted into the forward tilt standby posture common holes 101b and 102b after confirming that the seating posture shown in FIG. Therefore, switching between the vertical operation and the rotation operation is very complicated.

  Further, in the lifting mechanism 100 described in Patent Document 1, in the state after the vertical operation of the toilet seat base (see FIG. 5) and the state after the rotation operation (see FIG. 6), the common holes 101a, 102a for horizontal standby posture and The forward tilt standby posture common holes 101b and 102b are not overlapped, and the connecting shaft 103 cannot be replaced. Therefore, the toilet seat base 104 cannot be continuously operated in the vertical operation and the rotation operation.

  SUMMARY OF THE INVENTION In view of the above problems of the conventional lifting mechanism, the present invention provides a lifting mechanism that performs a vertical motion and a rotational motion of a continuous driven member without changing the central shaft for standing up the link. Objective.

  The lifting device of the present invention includes a base, a first link attached to the base, a second link attached to the base and arranged to intersect the first link, and the first link to the base. An elevating mechanism comprising a drive section that rotates relative to the first link and a follower member supported by the second link, and one end side of the first link on one end side of the first link A first slider that supports the first link so as to be movable along the driven member is provided, and a rotation shaft that rotatably supports the first link with respect to the base is provided on the other end side of the first link. A fulcrum part rotatably connecting the second link and the driven member is provided on one end side of the second link, and the second link is provided on the other end side of the second link. A second slider that supports the other end side of the substrate so as to be movable. A first restricting portion serving as a joint portion of the first link and the second link is provided at an intersection position of the first link and the second link, and the driven member is provided at a predetermined height on the second link. A second restricting portion is provided for maintaining the position of the first restricting portion until the first restricting portion moves, and the second restricting portion is configured to move the first member until the driven member moves from an initial position to a predetermined height. Guided so as to be able to move on an arc centering on the restricting portion, the driven member is moved to a predetermined height by the rotation of the first link by the driving portion, and the driven member is moved to a predetermined height. After that, the first restricting portion is guided so as to be able to move on the arc around the rotation axis, and the second restricting portion is located on the arc around the rotation axis. Guided so that it can move relative to one link, That by rotation of the first link, and wherein the rotating the driven member about the fulcrum.

  The second slider is guided by a linear first guide provided on the base, and the first slider is guided by a linear second guide provided on the driven member, and the first restriction The fourth guide is guided by a third guide formed in an arc shape with the rotation axis as the center, and the second restricting portion is a fourth guide having a continuous first arc portion and a second arc portion having different centers. The second slider is abutted against the edge of the first guide at a predetermined height of the driven member, and the second restricting portion is moved from the initial position of the driven member to a predetermined height. It is preferable that the guide is guided in the first arc portion centered on the first restricting portion, and is guided in the second arc portion centered on the rotating shaft when the driven member is rotated.

  The drive unit includes a drive gear, the first link is provided with a sector gear that meshes with the drive gear, the fourth guide is formed on the sector gear, and the third guide is formed on the second link. It is preferred that

The lifting device of the present invention includes a base, a first link attached to the base, a second link attached to the base and arranged to intersect the first link, and the first link. An elevating mechanism including a drive unit that rotates with respect to a base, and a driven member that is supported by the first link and the second link, and at one end side of the first link, A first slider is provided for supporting one end side of the first link so as to be movable along the driven member, and the other end side of the first link is configured to rotatably support the first link with respect to the base. A shaft is provided, one end of the second link is provided with a fulcrum that rotatably connects the second link and the driven member, and the other end of the second link is provided with the second link. A second screw that supports the other end of the link so as to be movable with respect to the base. A first regulating portion serving as a joint portion of the first link and the second link is provided at an intersection position of the first link and the second link, and the follower member is provided on the second link. A second restricting portion is provided for holding the position of the first restricting portion until the first restricting portion is moved, and the second restricting portion is guided so that the second restricting portion can move on an arc centered on the first restricting portion. A first arc part that guides the second restricting part so that it can move on an arc around the rotation axis;
A third arc portion that guides the first restricting portion so as to be able to move on an arc around the rotation axis, and the first arc portion and the second arc portion are provided continuously, When the driven member moves from the initial position to a predetermined height, the first restricting portion does not move relative to the second link, the second restricting portion moves the first arc portion, When the driven member rotates from the initial rotation position to a predetermined angle, the first restricting portion moves along the third arc portion, and the second restricting portion moves along the second arc portion. It is characterized by.

  According to the present invention, the vertical motion and the rotational motion of the driven member can be continuously performed with a simple configuration, and the center of the standing motion of the first link and the second link is not shifted.

  In addition, the fourth guide in which the two arc portions are continuous makes it easy and smooth to switch between the two motions of the vertical operation and the rotation operation.

  Further, by providing the fourth guide to the sector gear, the number of parts can be reduced.

It is a figure which shows one Embodiment of the raising / lowering mechanism of this invention, and is a figure which shows the state which has the driven member of the raising / lowering mechanism in an initial position. It is a figure which shows one Embodiment of the raising / lowering mechanism of this invention, and is a figure which shows the state which the driven member of the raising / lowering mechanism completed vertical operation | movement. It is a figure which shows one Embodiment of the raising / lowering mechanism of this invention, and is a figure which shows the state which the driven member of the raising / lowering mechanism completed rotation operation | movement. It is a figure which shows the conventional raising / lowering mechanism, and is a figure which shows the state which has a toilet seat base in an initial position. It is a figure which shows the conventional raising / lowering mechanism, and is a figure which shows the state which the toilet seat base completed the vertical operation | movement. It is a figure which shows the conventional raising / lowering mechanism, and is a figure which shows the state which the toilet seat base of the raising / lowering mechanism inclined.

Hereinafter, the lifting mechanism of the present invention will be described in detail with reference to the accompanying drawings.
1 which is an embodiment of the present invention is a base 2, a first link 3 attached to the base 2, and a second attached to the base 2 and crossing the first link 3. A link 4, a drive unit 5 that rotates the first link 3 with respect to the base 2, and a driven member 6 that is supported by the first link 3 and the second link 4 are provided.

  The lifting device 1 of the present invention is not particularly limited in terms of lifting, but for example, a lifting member S such as a toilet seat, a chair or its seat, a bed, and a lifting device for care provided on the driven member 6. Can be used to raise and lower. Although only one lifting mechanism 1 is illustrated in FIG. 1 for illustration as the lifting mechanism 1, the lifting member S may be lifted or lowered by a pair of lifting mechanisms 1, or a plurality of two or more lifting mechanisms 1 The elevating member S can be raised and lowered using the mechanism 1.

  The base body 2 may support a load applied from both the first link 3 and the second link 4 of the elevating mechanism 1 and may serve as a base as long as it has a strength capable of supporting the load applied to the base body 2. The material, shape, etc. are not limited. Further, although the base 2 is illustrated as one member in FIG. 1, the load may be supported by two or more members, and the base 2 may be configured by two or more members, and the first member may be a separate member. Needless to say, the link 3 and the second link 4 may be attached.

  In FIG. 1, the drive unit 5 is illustrated as a drive gear G <b> 1 attached to the base body 2, but the drive unit 5 is configured to attach the first link 3 to the base body 2 regardless of whether it is manual, electric, direct, or indirect. The drive mechanism is not particularly limited as long as it can be rotated with respect to the drive mechanism. The drive unit 5 can be, for example, an electric motor and a reduction gear connected to the electric motor. The drive unit 5 is directly attached to the rotating shaft 31 of the first link 3 to transmit the driving force, and the first link 3 And the like that rotate the first link 3 with another member interposed therebetween.

  The driven member 6 is a member capable of vertical operation and rotation operation (tilting operation) following the rotation of the first link 3 and the second link 4, and the shape thereof is not particularly limited. Moreover, the attachment method etc. to the driven member 6 of the raising / lowering member S are not specifically limited.

  Further, as shown in FIG. 1, one end side of the first link 3 can be moved along the driven member 6 to one end side of the first link 3 (the upper end portion of the first link 3 in FIG. 1). A first slider 32 is provided to support the first link 3 and the other end of the first link 3 (the lower end of the first link 3 in FIG. 1) rotates the first link 3 relative to the base 2. A pivot shaft 31 is provided to support it.

  The first slider 32 of the first link 3 is used in the form of a sliding protrusion that moves along a guide (second guide 61 described later) provided on the driven member 6 in FIG. 32 is not particularly limited as long as it can move along the driven member 6 as the first link 3 rotates.

  Further, as shown in FIG. 1, a fulcrum for rotatably connecting the second link 4 and the driven member 6 to one end side of the second link 4 (the end portion on the upper side of the second link 4 in FIG. 1). A portion 41 is provided, and the other end side of the second link 4 is movable relative to the base body 2 on the other end side of the second link 4 (the lower end portion of the second link 4 in FIG. 1). A supporting second slider 42 is provided.

  The second link 4 intersects the first link 3 to form an X-shaped link, and the driven member 5 cooperates with the first link 3 to drive the driven member 6 vertically and rotationally by driving of the driving unit 5. The second slider 42 of the second link 4 is provided together with the rotating shaft 31 on a straight line perpendicular to the ascending / descending direction, and a guide (see FIG. 2; first guide 21 described later) provided on the base 2. The second slider 42 is not particularly limited as long as it can move along the base body 2 as the second link 4 rotates. It is not something.

  As shown in FIG. 1, a first restricting portion 33 serving as a joint portion of the first link 3 and the second link 4 is provided at the intersection position of the first link 3 and the second link 4. As will be described later, the first restricting portion 33 restricts the movement of the driven member 6 in the vertical direction to a predetermined height and the movement in the rotating direction. As long as the 1st control part 33 can become a joint part of the 1st link 3 and the 2nd link 4, you may be provided in any of the 1st link 3 and the 2nd link 4. FIG.

  As shown in FIG. 1, the second link 4 is provided with a second restricting portion 43 for holding the position of the first restricting portion 33 until the driven member 6 moves to a predetermined height. . The second restricting portion 43 holds the position of the first restricting portion 33 until the driven member 6 moves to a predetermined height. That is, the second restricting portion 43 restricts the first restricting portion 33 from moving relative to the second link 4 during the vertical movement of the driven member 6. More specifically, the second restricting portion 43 is configured such that the distance between the first restricting portion 33 and the fulcrum portion 41 and the distance between the first restricting portion 33 and the second slider 42 are kept constant. In addition, the position of the first restricting portion 33 is held and the vertical movement of the driven member 6 is ensured.

  In order to hold the position of the first restricting portion 33, the first arc portion C1 that guides the second restricting portion 43 so as to be able to move on the arc around the first restricting portion 33 is the first link 3 or Provided in any of the second links 4. When the second restricting portion 43 is configured to move along the first arc portion C1 with the first restricting portion 33 as the center, the driven member 6 moves from the initial position to a predetermined height. In addition, the first restricting portion 33 does not move relative to the second link 4, and the second restricting portion 43 moves along the first arc portion C1. Since the distance between the 1st control part 33 and the 2nd control part 43 is maintained with the radius L1 of the 1st circular arc part C1 while the 2nd control part 43 is moving the 1st circular arc part C1. It becomes constant. Therefore, the first restricting portion 33 does not move relative to the second link, and the first link 3 and the second link 4 are joints in which the position of the first restricting portion 33 shown in FIG. To move the driven member 6 vertically. At this time, the first restricting portion 33 does not move relative to the second link, and further, the first slider 32 of the first link 3 moves along the driven member 6, and the second link 4 The slider 42 moves along the base 2. Therefore, the center of the rising operation of the first link 3 and the second link 4 is not shifted, and the elevating member S provided on the driven member 6 moves forward (leftward in FIG. 1) when operating vertically from the initial position. ) Can stand upright without slipping. Therefore, the elevating member S can be moved directly above, and the elevating member S does not move forward or backward, so that there is no need to consider the moving space in the front-rear direction of the elevating member S.

  Note that the first restricting portion 33 and the second restricting portion 43 are provided in different links because the distance between the first restricting portion 33 and the second restricting portion 43 changes, for example, from the positional relationship shown in FIG. 1 to the positional relationship shown in FIG.

  The first arc part C1 may be a guide hole penetrating as long as the second restricting part 43 is guided on an arc centered on the first restricting part 33, or may be a non-penetrating guide groove. The guide method is not particularly limited. Moreover, the 1st circular arc part C1 should just be formed in the other link different from the link in which the 2nd control part 43 is provided.

  Next, in order to continuously perform the two motions of the vertical movement and the rotation operation (tilting operation), the second restricting portion 43 is guided so that it can further move on the arc around the rotation shaft 31. Two arc portions C2 and a third arc portion C3 that guides the first restricting portion 33 so as to be able to move on an arc centering on the rotation shaft 31, and the first arc portion C1 and the second arc portion C2 are provided. It is provided continuously. Accordingly, when the driven member 6 rotates from the initial rotation position to a predetermined angle, the first restricting portion 33 moves along the third arc portion C3 and the second restricting portion 43 moves along the second arc portion C2. To do. That is, when the first link 3 is driven by the drive unit 5, for example, as shown in FIG. 3, the first restricting portion 33 is guided by the third arc portion C <b> 3 and the second restricting portion 43 is the second arc portion. The first restricting portion 33 moves relative to the second link 4 by moving while being guided by C2. When the first restricting portion 33 moves relative to the second link 4, the joint portion (that is, the first restricting portion 33) of the X-shaped link (the first link 3 and the second link 4) moves, The driven member 6 can be rotated and tilted as shown in FIG. Further, since the first arc portion C1 and the second arc portion C2 are continuously provided, two motions of the vertical motion of the driven member 6 and the rotational motion (tilting motion) of the driven member 6 can be performed with a simple configuration. It can be done continuously. Therefore, it is not necessary to switch a complicated mechanism for performing both the vertical operation and the rotation operation, and to switch the axis that becomes the joint portion of the first link 3 and the second link 4 in order to switch the vertical operation and the rotation operation. .

  Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

  As shown in FIGS. 1 to 3, the lifting mechanism 1 of the present embodiment has a base 2 attached to the base B, and the base 2 intersects the first link 3 and the first link 3. A second link 4 is attached. The base 2 is further provided with a drive unit 5 for rotating the first link 3 with respect to the base 2, and the driven member 6 is supported by the first link 3 and the second link 4.

  In FIG. 1, the drive unit 5 includes a drive gear G1, and the first link 3 is provided with a sector gear G2 that meshes with the drive gear G1. When the drive gear G1 of the drive unit 5 is rotated by a driving force such as an electric motor, the sector gear G2 and the first link 3 meshing with the drive gear G1 rotate about the rotation shaft 31 of the first link 3.

  As shown in FIG. 1, a first slider 32 is provided on one end side (the upper end portion in FIG. 1) of the first link 3, and moves along the driven member 6 according to the rotation of the first link 3. To do. A rotation shaft 31 is provided on the other end side (the lower end portion in FIG. 1) of the first link 3 and is rotatably attached to the base body 2. A fulcrum portion 41 that rotatably connects the second link 4 and the driven member 6 is provided on one end side (the upper end portion in FIG. 1) of the second link 4, and the other end side of the second link 4. A second slider 42 that supports the other end of the second link 4 so as to be movable with respect to the base 2 is provided at the lower end in FIG. A first restricting portion 33 is provided at an intersection position of the first link 3 and the second link 4 and functions as a joint portion of an X-shaped link formed by the first link 3 and the second link 4. Further, the second link 4 is provided with a second restricting portion 43 for holding the position of the first restricting portion 33. In FIG. 1, the first restricting portion 33 and the second restricting portion 43 are protrusions protruding from the first link 3 and the second link 4, and these protrusions are guided on the first link 3 and the second link 4. The

  As shown in FIGS. 1 and 2, the second restricting portion 43 is guided so as to be able to move on an arc centered on the first restricting portion 33 from the initial position of the driven member 6 to a predetermined height, and the drive portion 5. The driven member 6 is moved to a predetermined height by the turning operation of the first link 3 by the above. Further, as shown in FIGS. 2 and 3, after the driven member 6 reaches a predetermined height, the first restricting portion 33 is guided so as to move on an arc centered on the rotation shaft 31, The second restricting portion 43 is guided so as to be movable with respect to the first link 3 on an arc centered on the turning shaft 31, and the first link 3 is rotated by the turning operation of the first link 3 by the driving portion 5. Rotates around the rotation shaft 31 and the first link 3 and the second link 4 move relative to each other in the horizontal direction in the figure, and the driven member 6 rotates around the fulcrum portion 41. Therefore, according to the present embodiment, it is possible to continuously perform the two motions of the vertical movement of the driven member 6 and the rotational movement (tilting movement) of the driven member 6 with a simple configuration. Therefore, it is not necessary to switch a complicated mechanism for performing both the vertical operation and the rotation operation, and to switch the axis that becomes the joint portion of the first link 3 and the second link 4 in order to switch the vertical operation and the rotation operation. .

  As shown in FIGS. 1 to 3, the second slider 42 is guided by a linear first guide 21 provided on the base 2, and the first slider 32 is a linear second guide provided on the driven member 6. Guided by a guide 61. Moreover, the 1st control part 33 is guided by the 3rd guide 44 formed in circular arc shape centering on the rotating shaft 31, and the 1st control part 33 is formed in the 2nd link 4 in FIGS. The third guide 44 is movably inserted. Moreover, the 2nd control part 43 is guided by the 4th guide 34 which has the continuous 1st circular arc part C1 and 2nd circular arc part C2 from which a center differs, In FIG. It is movably inserted in a fourth guide 34 formed in the link 3.

  As shown in FIG. 2, the second slider 42 abuts against the end edge 21E of the first guide 21 at a predetermined height of the driven member 6, and the second link 4 further moves leftward in FIG. And the movement height of the driven member 6 is adjusted.

  As shown in FIGS. 1 and 2, the second restricting portion 43 is a fourth centered on the first restricting portion 33 from the initial position (see FIG. 1) of the driven member 6 to a predetermined height (see FIG. 2). As shown in FIGS. 2 and 3, the guide 34 is guided by the first arc portion C <b> 1 of the guide 34, and is guided by the second arc portion C <b> 2 of the fourth guide 34 around the rotation shaft 31 when the driven member 6 rotates. .

  As described above, the second slider 42 is guided by the first guide 21 and the first slider 32 is guided by the second guide 61, so that the movement of the first slider 32 and the second slider 42 becomes smooth. The driven member 6 can be moved vertically and rotated. Further, by guiding the first restricting portion 33 with the third guide 44, the movement of the first restricting portion 33 within the third guide 44 becomes smooth, and the driven member 6 can be smoothly rotated. . Further, the fourth guide 34 in which the two first arc portions C1 and the second arc portion C2 are continuous makes it easy and smooth to switch between the two motions of the driven member 6 between the vertical motion and the rotational motion.

  Further, as shown in FIG. 1, the fourth guide 34 is formed in the sector gear G2 that meshes with the drive gear G1, and the third guide 44 is formed in the second link 4, so that the position of the first restricting portion 33 is increased. Since the first link 3 and the second link 4 can be used to hold and switch between the vertical operation and the rotation operation, the number of parts can be reduced.

  Next, the operation of the lifting mechanism 1 according to the present embodiment will be described.

  To drive the driven member 6 vertically from the bottom dead center state (initial state) of the driven member 6 shown in FIG. 1, the drive unit 5 is driven and the drive gear G1 of the drive unit 5 is rotated. In this initial state, the first restricting portion 33 is held at one end of the third guide 44 (the right end of the third guide 44 in FIG. 1), and the second restricting portion 43 is the first arc of the fourth guide 34. It is held at the portion C1 side end (the upper end of the fourth guide 34 in FIG. 1).

  When the drive gear G1 rotates clockwise in FIG. 1, the drive gear G1 meshes with the sector gear G2, so that the first link 3 rotates about the rotation shaft 31. While the 1st link 3 rotates and the 2nd control part 43 is moving the 1st circular arc part C1, the distance between the 1st control part 33 and the 2nd control part 43 is the radius of the 1st circular arc part C1. Since it is maintained as L1, it becomes constant. Accordingly, the first restricting portion 33 does not move relative to the second link 4, and the first link 3 and the second link 4 are positioned at the first restricting portion 33 shown in FIG. The position of the initial state is the joint portion of the X-shaped link. The first slider 32 of the first link 3 moves along the second guide 61 formed on the driven member 6, and the second slider 42 of the second link 4 moves along the first guide 21. To do. Therefore, when the driven member 6 moves vertically from the initial position of the driven member 6, the driven member 6 can stand upright from the initial position without moving in the front-rear direction (left-right direction in FIG. 1). . Therefore, the elevating member S can be moved directly above, and the elevating member S does not move forward or backward, so that there is no need to consider the moving space in the front-rear direction of the elevating member S. Further, the movement of the driven member 6 in the front-rear direction can be suppressed even when the driven member 6 is inclined by the rotation operation.

  When the driven member 6 moves at a predetermined height shown in FIG. 2, the third arc portion C3 of the third guide 44 in which the first restricting portion 33 is inserted is on an arc centered on the rotation shaft 31. Further, the second arc portion C <b> 2 of the fourth guide 34 in which the second restricting portion 43 is inserted is located on an arc centered on the rotation shaft 31. Therefore, as shown in FIG. 3, when the first link 3 further rotates, the first restricting portion 33 moves in the third guide 44, and similarly, the second restricting portion 43 is the second arc of the fourth guide 34. It moves along the part C2. Further, the second slider 42 of the second link 4 contacts the edge 21E of the first guide 21, and the second link 4 is held in the state shown in FIG. Due to the rotation of the first link 3, the first slider 32 of the first link 3 moves along the second guide 21, the driven member 6 rotates around the fulcrum 41, and the driven member 6 tilts.

  As mentioned above, although one Embodiment of the raising / lowering mechanism 1 of this invention was described using FIGS. 1-3, the raising / lowering mechanism 1 of this invention is not restricted to the aspect shown in FIGS. That is, the first link 3 and the second link 4 can be provided with the first restricting portion 33, the second restricting portion 43, the first arc portion C1, the second arc portion C2, and the third arc portion C3. If there is, it will not be specifically limited. Moreover, the 1st control part 33 and the 2nd control part 43 may be provided in which link, the 1st circular arc part C1, the 3rd circular arc part C3, and the 2nd control part by which the 1st control part 33 is guided. The link that provides the second arc portion C2 through which the guide 43 is guided can also be changed as appropriate according to the link in which the first restricting portion 33 and the second restricting portion 43 are provided. In FIG. 1, the driven member 6 is first operated vertically and then the driven member 6 is rotated (inclined). The rotating operation is performed first, and then the vertical operation is performed. You can also.

DESCRIPTION OF SYMBOLS 1 Lifting mechanism 2 Base | substrate 21 1st guide 21E End edge 3 1st link 31 Rotating shaft 32 1st slider 33 1st control part 34 4th guide 4 2nd link 41 Supporting point part 42 2nd slider 43 2nd control part 44 3rd guide 5 Drive part 6 Follower member 61 2nd guide C1 1st circular arc part C2 2nd circular arc part C3 3rd circular arc part G1 Drive gear G2 Sector gear S Lifting member

Claims (4)

A base, a first link attached to the base, a second link attached to the base and arranged to intersect the first link, and a drive unit for rotating the first link with respect to the base And an elevating mechanism comprising a driven member supported by the first link and the second link,
A first slider is provided on one end side of the first link to support one end side of the first link so as to be movable along the driven member, and on the other end side of the first link, the first link is provided. A rotation shaft that rotatably supports the link with respect to the base is provided,
A fulcrum portion that rotatably connects the second link and the driven member is provided on one end side of the second link, and the other end side of the second link is provided on the other end side of the second link. A second slider is provided for movably supporting the substrate,
A first restricting portion serving as a joint portion of the first link and the second link is provided at an intersection position of the first link and the second link,
The second link is provided with a second restricting portion for holding the position of the first restricting portion until the driven member moves to a predetermined height, and the second restricting portion is configured so that the driven member is initially set. The guide member is guided so as to be able to move on an arc centered on the first restricting portion until it moves from the position to a predetermined height, and the driven member is moved to a predetermined height by the turning operation of the first link by the driving portion. After the driven member has reached a predetermined height, the first restricting portion is guided so as to be able to move on an arc around the rotation axis, and the second restricting portion is The guide member is guided so as to be movable with respect to the first link on an arc around the rotation axis, and the driven member is rotated about the fulcrum by the rotation of the first link by the drive unit. Elevating mechanism characterized by letting The second slider is guided by a linear first guide provided on the base, and the first slider is guided by a linear second guide provided on the driven member,
The first restricting portion is guided by a third guide formed in an arc shape around the rotation axis,
The second restricting portion is guided by a fourth guide having a continuous first arc portion and a second arc portion having different centers,
The second slider abuts the edge of the first guide at a predetermined height of the driven member,
The second restricting portion is guided in the first arc portion centered on the first restricting portion from an initial position of the driven member to a predetermined height, and the rotating shaft is centered when the driven member is rotated. The lifting device according to claim 1, wherein the lifting device is guided in the second arc portion. The drive unit includes a drive gear, the first link is provided with a sector gear that meshes with the drive gear, and the fourth guide is formed in the sector gear,
The elevating mechanism according to claim 2, wherein the third guide is formed on the second link. A base, a first link attached to the base, a second link attached to the base and arranged to intersect the first link, and a drive unit for rotating the first link with respect to the base And an elevating mechanism comprising a driven member supported by the first link and the second link,
A first slider is provided on one end side of the first link to support one end side of the first link so as to be movable along the driven member, and on the other end side of the first link, the first link is provided. A rotation shaft that rotatably supports the link with respect to the base is provided,
A fulcrum portion that rotatably connects the second link and the driven member is provided on one end side of the second link, and the other end side of the second link is provided on the other end side of the second link. A second slider is provided for movably supporting the substrate,
A first restricting portion serving as a joint portion of the first link and the second link is provided at an intersection position of the first link and the second link,
The second link is provided with a second restricting portion for holding the position of the first restricting portion until the driven member moves to a predetermined height.
A first arc portion that guides the second restricting portion so as to be movable on an arc centered on the first restricting portion;
A second arc portion that guides the second restricting portion so as to be movable on an arc around the rotation axis;
A third arc portion that guides the first restricting portion so as to be able to move on an arc around the rotation axis;
The first arc portion and the second arc portion are provided continuously,
When the driven member moves from the initial position to a predetermined height, the first restricting portion does not move relative to the second link, and the second restricting portion moves the first arc portion,
When the driven member rotates from the initial rotation position to a predetermined angle, the first restricting portion moves along the third arc portion, and the second restricting portion moves along the second arc portion. A lifting mechanism.

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