JP2019152216A - Height adjusting mechanism - Google Patents

Abstract

To adjust a height by using an intermittent drive mechanism.SOLUTION: A height adjusting mechanism comprises: an intermittent drive mechanism including a pin gear in which a drive pin is protrusively provided, and a Geneva wheel including multiple grooves in which the drive pin is slid; and a transmission mechanism which transmits rotational movement of the Geneva wheel to an upper rod-like body and slides the upper rod-like body with respect to a lower rod-like body. The height adjusting mechanism is connected to a rod-like body including the upper rod-like bodies and the lower rod-like bodies which are provided to be slid mutually. The transmission mechanism extends a full length of the rod-like body in a case where the Geneva wheel is rotated in a first direction, and reduces the full length of the rod-like body in a case where the Geneva wheel is rotated in a second direction that is a direction opposite to the first direction. The intermittent drive mechanism locks the Geneva wheel in such a manner that the Geneva wheel is prevented from being rotated in the second direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a height adjustment mechanism.

  Patent Documents 1 and 2 disclose an intermittent drive mechanism. Patent Document 1 discloses a sequential drive device that sequentially drives a plurality of Geneva slaves using one Geneva original vehicle. Patent Document 2 discloses a speed reducer that includes a rotating member and an intermittently rotating member that rotates intermittently by a predetermined angle by a drive pin that protrudes from the rotating member each time the rotating member makes one rotation. Yes.

JP 2006-266398 A JP 2010-175056 A

  However, Patent Documents 1 and 2 do not disclose that the intermittent drive mechanism is applied to a device that adjusts the height.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a height adjusting mechanism capable of adjusting the height using an intermittent drive mechanism.

  In order to solve the above problems, a height adjusting mechanism according to the present invention is connected to, for example, a rod-shaped body having an upper bar-shaped body and a lower bar-shaped body that are slidable with respect to each other, and an upper end of the upper bar-shaped body. A height adjusting mechanism that adjusts the height of a portion, wherein the intermittent drive mechanism includes a pin gear with a drive pin protruding therefrom, and a Geneva foil having a plurality of grooves in which the drive pin moves, and the Geneva foil A transmission mechanism that transmits the rotational motion of the upper bar-shaped body to the lower bar-shaped body, and the transmission mechanism rotates the Geneva foil in the first direction. Sometimes the overall length of the rod-shaped body is extended, and when the Geneva foil is rotated in a second direction opposite to the first direction, the overall length of the rod-shaped body is shortened. direction And having a stop mechanism for locking the Zenebahoiru against rotation.

  According to the present invention, an intermittent drive mechanism having a pin gear with a drive pin protruding therefrom and a Geneva wheel having a plurality of grooves in which the drive pin moves, and a rotational movement of the Geneva wheel are transmitted to the upper rod-shaped body. A height adjusting mechanism having a transmission mechanism for sliding the upper bar-like body relative to the lower bar-like body is connected to the bar-like body having the upper bar-like body and the lower bar-like body provided to be slidable with respect to each other. ing. The transmission mechanism increases the overall length of the rod-shaped body when the Geneva foil rotates in the first direction, and shortens the overall length of the rod-shaped body when the Geneva foil rotates in the second direction that is opposite to the first direction. Further, the intermittent drive mechanism locks the Geneva foil so that the Geneva foil does not rotate in the second direction. Thereby, height adjustment can be performed using an intermittent drive mechanism.

  Here, the pin gear has a second drive pin, and the drive pin and the second drive pin are arranged at positions symmetrical with respect to the rotation center of the pin gear, and the Geneva wheel has a radius from the rotation center. A plurality of petal-like protrusions extending outward in the direction, and the drive pin and the second drive pin slide along side surfaces of the protrusion as the pin gear rotates, and the drive pin and When the second drive pin is disposed along the vertical direction, the drive pin and the second drive pin may abut against the adjacent protrusions to lock the Geneva foil. Thereby, rotation of the Geneva foil can be locked without adding a mechanism for locking the Geneva foil such as a ratchet mechanism. Moreover, since the drive pin and the second drive pin are arranged at positions symmetrical with respect to the rotation center of the pin gear, the number of rotations of the Geneva foil until the rotation of the Geneva foil is locked can be reduced.

  Here, a rotatable handle may be further provided, and the pin gear may rotate in conjunction with the rotation of the handle. Thereby, the height adjustment of a rod-shaped body can be performed manually.

  Here, the transmission mechanism includes a rack gear and a pinion gear, and the pinion gear rotates in conjunction with the rotation of the Geneva wheel, and the rack gear is formed on the side surface of the upper bar-shaped body and on the longitudinal side of the upper bar-shaped body. It may be formed along the direction. Thereby, the upper bar-shaped body can be moved with a simple configuration.

  Here, a cord-like body provided between the handle and the intermittent drive mechanism may be provided, and the cord-like body may transmit the rotation of the handle to the intermittent drive mechanism. Thereby, the handle can be provided at a position away from the intermittent drive mechanism.

  Here, a second intermittent drive mechanism and a second transmission mechanism connected to a second rod-shaped body having a second upper rod-shaped body and a second lower rod-shaped body slidably provided with each other, and the rotational movement of the pin gear The second intermittent drive mechanism includes a second pin gear having substantially the same shape as the pin gear, and a second geneva wheel having substantially the same shape as the Geneva wheel, The second transmission mechanism transmits the rotational movement of the second Geneva foil to the second upper bar-like body, causes the second upper bar-like body to slide with respect to the second lower bar-like body, and the link member is The pin gear and the second pin gear are coupled to each other, and the pin gear and the second pin gear may rotate in conjunction with rotation of the link member. Thereby, two height adjustment mechanisms can be interlocked. Further, since the two height adjusting mechanisms are connected by the link member, the two height adjusting mechanisms rotate in the same manner, and the occurrence of the twisting can be prevented.

  According to the present invention, the height can be adjusted using the intermittent drive mechanism.

It is a perspective view which shows the outline of the shower apparatus 2 which has the height adjustment mechanism 1. FIG. 3 is an exploded perspective view of the height adjustment mechanism 1. FIG. It is the perspective view which looked at the height adjustment mechanism 1 from the back side. It is the perspective view which looked at the height adjustment mechanism 1 from the front side. It is a figure which shows the outline of the pin gear 31 and the Geneva foil 35. FIG. It is the perspective view which looked at the height adjustment mechanism 1 from the back side in the state which attached the cover 80 and the case. It is a figure which shows typically the motion of the pin gear 31 and the Geneva foil 35, (A) shows the state in which rotation of the Geneva foil 35 is locked, (B) shows the pin gear 31 rotating counterclockwise from the state shown in (A). (C) shows a state in which the pin gear 31 has rotated counterclockwise from the state shown in (B), and (D) shows a state in which the pin gear 31 has rotated counterclockwise from the state shown in (C). (E) shows a state in which the pin gear 31 has rotated counterclockwise from the state shown in (D), and (F) shows a state in which the pin gear 31 has rotated counterclockwise from the state shown in (E). (G) shows a state where the rotation of the Geneva wheel 35 is locked by rotating the pin gear 31 counterclockwise from the state shown in (F). It is a perspective view which shows the outline of the clothes-drying base 3 concerning 2nd Embodiment. It is a perspective view which shows the outline of the height adjustment mechanism 1B and the link member 60. FIG. It is a figure which shows the outline of the height adjustment mechanism 1A and the link member 60. FIG. 4 is a perspective view showing an outline of a gear member 61. FIG. It is a figure which shows an example of the refrigerator 4 with which the handle | steering-wheel 73 was provided in the position away from the height adjustment mechanism 1A '.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
<First Embodiment>
1st Embodiment is an example which applied the height adjustment mechanism concerning this invention to the shower apparatus. FIG. 1 is a perspective view schematically showing a shower apparatus 2 having a height adjusting mechanism 1. The shower device 2 includes a height adjusting mechanism 1 and a rod-like body 100 (upper rod-like body 10 and lower rod-like body 11).

  The height adjusting mechanism 1 is connected to the rod-like body 100 and adjusts the height of the upper end portion of the upper rod-like body 10 (see the arrow in FIG. 1). In the shower device 2, the upper bar 10 and the lower bar 11 are support columns, and a shower head 101 is provided at the upper end of the upper bar 10. The height adjusting mechanism 1 adjusts the height of the shower head 101. The shower head 101 is a water outlet from which hot water is discharged.

  The upper bar 10 and the lower bar 11 are cylindrical members that slide on each other, and the upper bar 10 and the lower bar 11 constitute a bar 100. The upper bar 10 and the lower bar 11 are hollow round bars, and the outer diameter of the upper bar 10 is substantially the same as the inner diameter of the lower bar 11. The lower bar-shaped body 11 is fixed, and the upper bar-shaped body 10 is slidable with respect to the lower bar-shaped body 11.

  In the present embodiment, the upper bar 10 and the lower bar 11 are hollow round bars, but are not limited to hollow round bars. The upper bar 10 and the lower bar 11 may be prismatic members. Further, the upper bar-shaped body 10 may be a solid bar.

  In the present embodiment, the upper bar 10 and the lower bar 11 may have their respective axes extending in a substantially vertical direction, and each axis is slightly inclined with respect to the substantially vertical direction. May be.

  FIG. 2 is an exploded perspective view of the height adjusting mechanism 1. FIG. 3 is a perspective view of the height adjusting mechanism 1 as viewed from the back side. FIG. 4 is a perspective view of the height adjusting mechanism 1 as viewed from the front side.

  The height adjustment mechanism 1 mainly includes a handle 20, an intermittent drive mechanism 30, a transmission mechanism 40, a shaft 51, a cover 80, and a case 90. However, in FIGS. 3 and 4, the cover 80 and the case 90 are not shown.

  The handle 20 is a substantially disk-shaped member, and is rotatable about an axis ax1. On the outer peripheral surface of the handle 20, irregularities are provided over the entire circumference so that the operator can easily grasp and rotate the operator. A cylindrical projection 21 is formed at the approximate center on the back side of the handle 20. The central axis of the protrusion 21 is substantially the same as the axis ax1. The tip of the protrusion 21 is fitted into a convex portion 32 of a pin gear 31 described later.

  The intermittent drive mechanism 30 mainly includes a pin gear 31 and a geneva foil 35. The pin gear 31 rotates in conjunction with the rotation of the handle 20. The Geneva foil 35 rotates intermittently in conjunction with the rotation of the pin gear 31.

  The pin gear 31 is a substantially disk-shaped member. A convex portion 32 that fits into the protrusion 21 is provided at the approximate center of the pin gear 31. Since the protrusion 21 and the convex part 32 are fitted, the handle 20 and the pin gear 31 rotate in conjunction with each other.

  Two drive pins 33 and 34 project from the surface of the pin gear 31 opposite to the convex portion 32. The drive pins 33 and 34 are substantially cylindrical protrusions, and have a protrusion amount sufficient to drive the Geneva foil 35. The drive pins 33 and 34 are provided at symmetrical positions with respect to the rotation center (axis ax1) of the pin gear 31. In other words, the drive pins 33 and 34 are provided at positions separated by about 180 degrees in the rotation direction of the pin gear 31. The two drive pins 33 and 34 alternately slide on the outer peripheral surface of the Geneva foil 35 as the pin gear 31 rotates.

  In FIG. 4, a plurality of teeth are formed on the periphery of the pin gear 31, but the teeth are not essential.

  The Geneva foil 35 is a flat plate-like member and rotates around the axis ax2. The Geneva foil 35 is disposed adjacent to the surface on which the drive pins 33 and 34 of the pin gear 31 are provided.

  FIG. 5 is a diagram showing an outline of the pin gear 31 and the Geneva foil 35. The Geneva foil 35 has a plurality of petal-shaped protrusions 36 extending radially outward from the center of rotation. The protrusion 36 has six protrusions 36a to 36f, and the protrusions 36a to 36f are evenly arranged.

  In plan view (here, seen from the direction orthogonal to the paper surface of FIG. 5), the shape of the Geneva foil 35 is substantially point-symmetric. In addition, each of the protrusions 36a to 36f is axisymmetric with respect to a center line (see a one-dot chain line in FIG. 5) radially extending from the center (axis ax2) of the Geneva foil 35 in plan view.

  The outer peripheral surface of the protrusion part 36a has side surfaces 361a and 362a and a tip part 363a. The side surfaces 361a and 362a are straight lines, and the tip portion 363a is a substantially curved line. The side surface 361a and the front end portion 363a and the side surface 362a and the front end portion 363a are smoothly connected. The side surfaces 361a and 362a are surfaces on which the drive pins 33 and 34 slide.

  The outer peripheral surface of the protruding portion 36b has side surfaces 361b and 362b and a front end portion 363b, and the outer peripheral surface of the protruding portion 36c has side surfaces 361c and 362c and a front end portion 363c. The outer peripheral surface has side surfaces 361d and 362d and a tip portion 363d, the outer peripheral surface of the projection portion 36e has side surfaces 361e and 362e, and the tip portion 363e, and the outer peripheral surface of the projection portion 36f is It has side surfaces 361f, 362f, and a tip portion 363f. Since the protrusions 36a to 36f have the same shape, the description of the protrusions 36b to 36f is omitted.

  Between the side surface 361f and the side surface 362a is a groove portion 37a, between the side surface 361a and the side surface 362b is a groove portion 37b, between the side surface 361b and the side surface 362c is a groove portion 37c, and between the side surface 361c and the side surface 362d. Is a groove portion 37d, a groove portion 37e is provided between the side surface 361d and the side surface 362e, and a groove portion 37f is provided between the side surface 361e and the side surface 362f. The drive pins 33 and 34 move along the side surface 361f or the side surface 362a to move inside the groove portion 37a, and slide along the side surface 361a or the side surface 362b to move inside the groove portion 37b. It slides along the side 361b or the side 362c to move inside the groove 37c, slides along the side 361c or the side 362d moves inside the groove 37d, and slides along the side 361d or the side 362e. It moves inside the groove part 37e by moving, and moves inside the groove part 37f by sliding along the side surface 361e or the side surface 362f.

  When the drive pins 33 and 34 are moving in the grooves 37a to 37f, the Geneva foil 35 and the pin gear 31 are in a connected state. As the pin gear 31 rotates, the drive pins 33 and 34 alternately move in the grooves 37 a to 37 f, so that the Geneva wheel 35 rotates intermittently in conjunction with the rotation of the pin gear 31.

  In the present embodiment, since each of the protrusions 36a to 36f and the groove portions 37a to 37f has six, when the handle 20 and the pin gear 31 rotate 180 degrees, the Geneva foil 35 rotates approximately 60 degrees. The movement of the Geneva foil 35 will be described in detail later.

  In the present embodiment, the number of the protrusions 36a to 36f and the groove portions 37a to 37f is six, but the number of the protrusions 36a to 36f and the groove portions 37a to 37f is arbitrary and is not limited to six. However, if the number of protrusions and grooves is 4 or less, the movement pitch (described later) of the upper bar-shaped body 10 becomes large, and if the number of protrusions and grooves is 7 or more, the strength near the rotation center of the Geneva foil 35 decreases. To do. Therefore, the number of protrusions and grooves is preferably six.

  A central hole 35 a penetrating in the thickness direction is provided at the approximate center of the Geneva foil 35. A shaft 51 (not shown in FIG. 5) is fitted into the central hole 35a.

  Returning to the description of FIGS. The intermittent drive mechanism 30 has a stop mechanism that locks the Geneva foil 35 so that the Geneva foil 35 does not rotate in the direction opposite to the A direction. The stopping mechanism will be described in detail later together with the movement of the Geneva foil 35.

  The transmission mechanism 40 transmits the rotational motion of the Geneva foil 35 to the upper bar 10 and slides the upper bar 10 with respect to the lower bar 11. The transmission mechanism 40 mainly includes a pinion gear 41 and a rack gear 42.

  The pinion gear 41 is a substantially cylindrical member having a tooth shape formed on the outer peripheral surface, and rotates about the axis ax2. A shaft hole 43 penetrating in the axial direction is formed in the approximate center of the pinion gear 41 in the axial direction. A shaft 51 is fitted in the shaft hole 43. The shaft 51 is fitted into the central hole 35 a of the Geneva foil 35. Thereby, the pinion gear 41 rotates with the rotation of the Geneva foil 35. The rotation direction and rotation amount of the Geneva foil 35 and the rotation direction and rotation amount of the pinion gear 41 are substantially the same.

  In the present embodiment, the shaft 51 and the shaft hole 43 have a shape obtained by cutting a part of a circle with a straight line, but the shapes of the shaft 51 and the shaft hole 43 are not limited thereto. For example, the shaft 51 and the shaft hole 43 may have a substantially oval shape.

  The rack gear 42 is formed on the outer peripheral surface of the upper bar 10 along the longitudinal direction of the upper bar 10. The rack gear 42 meshes with the pinion gear 41. The pinion gear 41 and the rack gear 42 constitute a rack and pinion mechanism, and the rotational motion of the pinion gear 41 is converted into linear motion by the rack gear 42. As a result, the upper bar-shaped body 10 moves in the longitudinal direction as the pinion gear 41 rotates.

  The transmission mechanism 40 extends the entire length of the rod-shaped body 100 when the pinion gear 41 rotates in the direction A in FIGS. 3 and 4, and contracts the entire length of the rod-shaped body 100 when the pinion gear 41 rotates in the direction opposite to the A direction. As described above, the upper bar 10 is moved in the vertical direction at a predetermined movement pitch. For example, in conjunction with the rotation of the pinion gear 41 by 60 degrees, the upper bar 10 moves in the vertical direction by about 17 mm. In addition, the movement pitch of the upper side rod-shaped body 10 can be adjusted by varying the diameter of the pinion gear. Moreover, the movement pitch of the upper side rod-shaped body 10 can be adjusted by varying the diameters of the pin gear and the Geneva foil.

  As shown in FIG. 2, the cover 80 and the case 90 are members that house the pin gear 31 and the Geneva foil 35 therein.

  The cover 80 and the case 90 are substantially bowl-shaped flat members in which a substantially rectangular shape and a substantially semicircular shape are connected. The diameter of the substantially semicircle corresponds to the diameter of the Geneva foil 35. The cover 80 and the case 90 are respectively provided with ribs 81 and 91 on the periphery. The cover 80 and the case 90 are assembled by fitting the rib 81 and the rib 91 together.

  The cover 80 is provided with two through holes 82 and 83, and the case 90 is provided with a through hole 92. The through holes 82 and 92 are provided on the axis ax2, and the through hole 83 is provided on the axis ax1.

  The diameter of the through hole 82 corresponds to the outer diameter of the convex portion 35b (see FIG. 4) of the Geneva foil 35. The convex portion 35 b is inserted into the through hole 82 from the inner side to the outer side of the cover 80. The diameter of the through hole 92 corresponds to the outer diameter of the shaft 51. The shaft 51 is inserted through the through hole 92. Accordingly, the Geneva foil 35 and the pinion gear 41 are provided to be rotatable with respect to the cover 80 and the case 90.

  The diameter of the through hole 83 corresponds to the outer diameter of the convex portion 32 of the pin gear 31. The convex portion 32 is inserted into the through hole 83 from the inner side to the outer side of the cover 80. The convex portion 32 is inserted through the through hole 82 and is fitted to the protrusion 21 of the handle 20 disposed outside the cover 80. Accordingly, the pin gear 31 is provided to be rotatable with respect to the cover 80.

  A holding portion 93 for holding the upper bar 10 and the lower bar 11 is provided on the outside of the case 90. The holding part 93 has a pair of opposing protrusions 93a and 93b.

  FIG. 6 is a perspective view of the height adjusting mechanism 1 as viewed from the back side with the cover 80 and the case 90 attached. The connecting pipe 12 is inserted into the protrusions 93a and 93b. The protrusions 93a and 93b have elasticity, and hold the connecting pipe 12 by the elastic force of the protrusions 93a and 93b. Note that the projections 93a and 93b may be fixed using bolts and nuts (not shown) so that the tips of the projections 93a and 93b are close to each other.

  The connecting pipe 12 is a substantially cylindrical member. The lower bar 11 is inserted into the connecting pipe 12, and the upper bar 10 is inserted into the lower bar 11. The lower bar-like body 11 is notched near the upper end, and the rack gear 42 is exposed from the notched portion. The pinion gear 41 is provided outside the case 90 and meshes with the rack gear 42. Thereby, the upper bar-shaped body 10 moves up and down by the power transmitted from the pinion gear 41 to the rack gear 42.

  Here, the movement and stop mechanism of the Geneva foil 35 will be described. FIGS. 7A to 7G are diagrams schematically showing the movement of the pin gear 31 and the Geneva foil 35, where FIG. 7A shows a state in which the rotation of the Geneva foil 35 is locked, and FIG. ) Shows a state in which the pin gear 31 has been rotated counterclockwise from the state shown in FIG. 5C, FIG. 5C shows a state in which the pin gear 31 has been rotated counterclockwise from the state shown in FIG. (E) shows a state in which the pin gear 31 has rotated counterclockwise from the state shown in (D), and (F) shows a state in (E). (G) shows a state where the pin gear 31 rotates counterclockwise from the state shown in (F) and the rotation of the Geneva wheel 35 is locked.

  In FIG. 7, when the Geneva foil 35 rotates clockwise, the full length of the rod-shaped body 100 is extended (the pinion gear 41 rotates in the A direction), and when the Geneva foil 35 rotates counterclockwise, the rod-shaped body It is assumed that the total length of 100 is shortened.

  FIG. 7A shows a locked state, and the drive pins 33 and 34 are in contact with the adjacent protrusions 36. Here, the drive pins 33 and 34 are arranged along the vertical direction, the drive pin 33 is in contact with the protrusion 36a, and the drive pin 34 is in contact with the protrusion 36f. In the locked state, since the drive pin 33 is positioned vertically below the protrusion 36a, the Geneva wheel 35 cannot rotate unless the pin gear 31 is rotated. Thus, the drive pins 33 and 34 and the Geneva foil 35 function as a stop mechanism.

  In the state shown in FIG. 7A, the drive pin 33 is in contact with the tip 363a. When the pin gear 31 is rotated counterclockwise from the state shown in FIG. 7A, the drive pin 33 comes into contact with the side surface 361a as shown in FIG. 7B. Thereby, the pin gear 31 and the Geneva foil 35 are connected.

  When the pin gear 31 is rotated counterclockwise from the state shown in FIG. 7B, as shown in FIG. 7C, the drive pin 33 slides along the side surface 361a, and the inside of the groove 37b is generated in the Geneva foil. It moves toward the back side of 35. In FIGS. 7B to 7C, the Geneva foil 35 does not rotate.

  7C to 7E, when the pin gear 31 rotates counterclockwise, the drive pin 33 pushes up the side surface 361a, that is, the protrusion 36a. As a result, the Geneva foil 35 rotates approximately 60 degrees counterclockwise.

  7E to 7F, the drive pin 33 moves toward the outside of the Geneva foil 35 inside the groove portion 37b. During this time, the Geneva foil 35 does not rotate.

  When the pin gear 31 rotates counterclockwise from the state shown in FIG. 7F, the contact between the drive pin 33 and the side surface 361a is released as shown in FIG. 7G, and the drive pin 33 is moved to the tip 363a. Abut. In FIG. 7G, the drive pins 33 and 34 are arranged along the vertical direction, the drive pin 33 abuts on the tip portion 363a, and is driven to the tip portion 363b of the projection portion 36b adjacent to the projection portion 36a. The pin 34 is in contact. That is, the state shown in FIG. 7G is also in the locked state as in FIG. 7A, and the drive pin 34 is positioned vertically below the protrusion 36b, so that the Geneva foil 35 rotates unless the pin gear 31 is rotated. Can not.

  When the state shown in FIG. 7F shifts to the locked state shown in FIG. 7G, the Geneva foil 35 rotates counterclockwise by a minute angle. As described above, since the height of the upper end portion of the upper bar-like body 10 slightly falls when the locked state is reached (just before the locked state), the user can easily determine whether or not the height adjusting mechanism 1 is in the locked state. be able to.

  When the pin gear 31 rotates counterclockwise from the state shown in FIG. 7G, the drive pin 34 comes into contact with the side surface 361b, and the pin gear 31 and the Geneva wheel 35 are connected. This state is a state in which the pin gear 31 rotates 180 degrees counterclockwise in FIG. 7 and the Geneva foil 35 rotates approximately 60 degrees clockwise in FIG. 7 with respect to the state shown in FIG. 7B. In this manner, the pin gear 31 rotates 180 degrees counterclockwise in FIG. 7 and the Geneva foil 35 repeats the operation of rotating approximately 60 degrees clockwise in FIG. The total length can be increased.

  When the pin gear 31 rotates clockwise in FIG. 7, the pin gear 31 rotates clockwise in FIG. 7 in the order shown in FIGS. 7G and 7B, and the Geneva wheel 35 rotates counterclockwise in FIG. Rotate. Thereby, the full length of the rod-shaped body 100 can be shortened.

  Next, the stop mechanism of the intermittent drive mechanism 30 will be described. Since the longitudinal direction of the upper bar 10 and the lower bar 11 is arranged along the vertical direction, the pinion gear 41 and the Geneva wheel 35 are loaded with the weight of the upper bar 10 and the upper bar 10. The load of other articles arranged in this way is applied. These gravitational loads tend to cause the Geneva foil 35 to rotate counterclockwise in FIG.

  For example, consider the case where the hand 20 is released from the handle 20 in the state shown in FIG. 7E and the pin gear 31 is freely rotatable. In this case, the Geneva foil 35 rotates counterclockwise in FIG. 7, and the side surface 361a presses the drive pin 33, whereby the pin gear 31 rotates clockwise.

  When the drive pin 33 contacts the tip 363a and the pin gear 31 rotates clockwise to the position where the drive pin 34 contacts the tip 363f, the Geneva foil 35 is in a locked state that cannot be rotated unless the pin gear 31 is rotated. The rotation of the counterclockwise 35 in FIG. 7, that is, the lowering of the upper bar-like body 10 due to gravity is suppressed.

  According to the present embodiment, the height adjustment mechanism 1 having the intermittent drive mechanism 30 can adjust the height of the upper bar 10. By using the intermittent drive mechanism 30, the upper bar-shaped body 10 can be moved at a predetermined movement pitch in accordance with the rotation of the handle 20 (that is, the pin gear 31).

  Further, according to the present embodiment, since the user only needs to operate the handle 20 with one hand, the user can easily move the upper bar 10. For example, even if the user using the shower device 2 holds a towel or the like with one hand, the user adjusts the height of the shower head 101 by operating the handle 20 with the other hand. It is possible to provide the shower device 2 that is easy to use.

  Moreover, according to this Embodiment, since the intermittent drive mechanism 30 has a stop mechanism, even if the load of a gravitational direction is applied, the length of the rod-shaped body 100 can be hold | maintained. For example, even if the user using the shower device 2 puts the handle portion of the spa bag with shampoo or the like on the shower head 101, the position of the shower head 101 can be prevented from being lowered.

  Further, according to the present embodiment, since the drive pins 33 and 34 and the geneva foil 35 included in the intermittent drive mechanism 30 function as a stop mechanism, it is not necessary to provide a stop mechanism separately from the intermittent drive mechanism 30 and the transmission mechanism 40. . Therefore, the configuration is simplified, and the height adjusting mechanism 1 can be realized with a small number of parts. In addition, since the drive pins 33 and 34 are arranged at positions symmetrical with respect to the rotation center of the pin gear 31, the number of rotations of the Geneva wheel 35 until the rotation of the Geneva wheel 35 is locked (that is, the lowering of the upper rod 10). Amount) can be reduced.

  In the present embodiment, the pin gear 31 has the two drive pins 33 and 34, but the number of drive pins may be one or three or more. For example, when a pin gear having only the drive pin 33 is used, when the pin gear rotates 360 degrees, the Geneva foil 35 rotates 60 degrees. However, when a pin gear having only the drive pin 33 is used, a mechanism for locking the Geneva wheel 35 such as a ratchet mechanism is added separately.

  In the present embodiment, the drive pins 33 and 34 are in contact with the adjacent protrusions 36a to 36f in the locked state, but the drive pins 33 and 34 hold any one of the protrusions 36a to 36f in the locked state. May be. This is possible by adjusting the distance between the drive pins 33 and 34 and the number and size of the protrusions of the Geneva foil. According to this configuration, rotation of the Geneva foil 35 when a load in the direction of gravity is applied can be more firmly suppressed.

<Second Embodiment>
Although the 1st Embodiment of this invention was the shower apparatus 2 which has the one rod-shaped body 100 and the one height adjustment mechanism 1, the number of a rod-shaped body and a height adjustment mechanism is not restricted to this. .

  The second embodiment of the present invention is a form having two rod-like bodies and two height adjusting mechanisms. Hereinafter, the clothesline 3 according to the second embodiment will be described. In the description of the clothes rack 3, the same portions as those of the shower device 2 according to the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

  FIG. 8 is a perspective view showing an outline of the clothesline 3 according to the second embodiment. The clothes-drying platform 3 includes two rod-shaped bodies 100, a coupling rod 102 that couples the two rod-shaped bodies 100, two height adjustment mechanisms 1A and 1B, and a link member that couples the two height adjustment mechanisms 1A and 1B. 60.

  In the clothes rack 3, the two rod-shaped bodies 100 are arranged substantially parallel to each other at a distance. The upper ends of the two upper bars 10 are connected by a connecting rod 102. For example, a laundry or the like can be hung on the connecting rod 102. A support leg 14 is provided at the lower end of the lower bar 11. The support foot 14 includes a rod body 14a placed on the ground and the like, and a cylindrical portion 14b provided substantially orthogonal to the rod body 14a. The support foot 14 is fitted to the lower end of the lower bar 11.

  The two rod-like bodies 100 are provided with height adjusting mechanisms 1A and 1B, respectively. The height adjustment mechanism 1B is configured symmetrically with respect to the height adjustment mechanism 1A. The two height adjusting mechanisms 1A and 1B are provided so as to face each other. The height adjusting mechanisms 1 </ b> A and 1 </ b> B are connected by a link member 60.

  FIG. 9 is a perspective view schematically showing the height adjusting mechanism 1B and the link member 60. FIG. FIG. 10 is a diagram schematically illustrating the height adjustment mechanism 1A and the link member 60. As illustrated in FIG.

  The height adjustment mechanism 1A includes a handle 20 (not shown in FIG. 10), an intermittent drive mechanism 30A, a transmission mechanism 40, a shaft 51, a cover 80 (not shown in FIG. 10), and a case 90. . The height adjustment mechanism 1B includes a handle 20, an intermittent drive mechanism 30A, a transmission mechanism 40 (not shown in FIG. 9), a shaft 51 (not shown in FIG. 9), and a cover 80A (not shown in FIG. 9). And a case 90A. The cover 80 </ b> A and the case 90 </ b> A are the same as the cover 80 and the case 90 except that the cover 80 </ b> A and the case 90 </ b> A are symmetrical with respect to the cover 80 and the case 90.

  The difference between the height adjusting mechanism 1A and the height adjusting mechanism 1B is only the arrangement of each component (the height adjusting mechanism 1A and the height adjusting mechanism 1B are arranged symmetrically). Each component of the height adjustment mechanism 1A and each component of the height adjustment mechanism 1B have substantially the same shape.

  The intermittent drive mechanism 30 </ b> A mainly includes a pin gear 31 </ b> A and a geneva foil 35. The pin gear 31 </ b> A rotates in conjunction with the rotation of the handle 20. The pin gear 31A is the same as the pin gear 31 except that a gear 38 is formed around it. The Geneva foil 35 rotates intermittently in conjunction with the rotation of the pin gear 31A.

  The link member 60 includes a gear member 61 and a connecting rod 62. The gear member 61 transmits the rotational motion of the pin gear 31 </ b> A to the connecting rod 62. The gear members 61 are provided at both ends of the connecting rod 62, respectively.

  FIG. 11 is a perspective view showing an outline of the gear member 61. The gear member 61 is a substantially columnar member, and includes a gear 61a and a convex portion 61b protruding in the axial direction of the gear 61a. The gear 61a meshes with a gear 38 formed on the outer periphery of the pin gear 31A (see FIGS. 9 and 10). A press-fit portion 61c having a substantially oval cross section is formed on the convex portion 61b.

  Returning to the description of FIGS. The gear member 61 is provided so as to penetrate through the holes formed in the cases 90 and 90A. The gear 61a is provided inside the space surrounded by the covers 80, 80A and the cases 90, 90A, and the press-fit portion 61c is provided outside the space surrounded by the covers 80, 80A and the cases 90, 90A. The press-fitting portion 61 c is press-fitted into holes (not shown) formed at both ends of the connecting rod 62.

  The link member 60 transmits the rotation of the intermittent drive mechanism 30A of the height adjustment mechanism 1A to the intermittent drive mechanism 30A of the height adjustment mechanism 1B. Further, the link member 60 transmits the rotation of the intermittent drive mechanism 30A of the height adjustment mechanism 1B to the intermittent drive mechanism 30A of the height adjustment mechanism 1A.

  For example, consider a case where the handle 20 of the height adjustment mechanism 1A is rotated by the user. In the height adjustment mechanism 1A, the pin gear 31A rotates together with the handle 20, the Geneva foil 35 rotates due to the rotation of the pin gear 31A, and the height of the upper end portion of the upper rod-like body 10 in the rod-like body 100 provided with the height adjustment mechanism 1A. Changes.

  In the height adjusting mechanism 1A, the gear 61a, that is, the gear member 61 rotates as the pin gear 31A rotates. Since the gear member 61 is press-fitted into the connecting rod 62, the connecting rod 62 rotates with the rotation of the pin gear 31A of the height adjusting mechanism 1A.

  When the connecting rod 62 rotates, the gear member 61 provided on the height adjusting mechanism 1B side, that is, the gear 61a rotates. In the height adjusting mechanism 1B, the pin gear 31A is rotated by the rotation of the gear 61a provided on the height adjusting mechanism 1B side, the Geneva wheel 35 is rotated by the rotation of the pin gear 31A, and the rod shape provided with the height adjusting mechanism 1B. The height of the upper end portion of the upper bar 10 in the body 100 changes.

  Thus, by rotating the handle 20 of the height adjustment mechanism 1A, the pin gears 31A of the height adjustment mechanisms 1A and 1B are simultaneously rotated by the same amount. Thereby, the Geneva foil 35 of the height adjusting mechanism 1A and the Geneva foil 35 of the height adjusting mechanism 1B are interlocked and rotated in the same direction by the same amount, and the heights of the upper ends of the two upper rod-like bodies 10 are the same. To change. Therefore, the connecting rod 102 moves in parallel, and the height of the connecting rod 102 changes.

  The pin gear 31A of the height adjustment mechanism 1A and the pin gear 31A of the height adjustment mechanism 1B are provided so that the drive pins 33 and 34 face each other (not shown). Therefore, the intermittent drive mechanism 30A of the height adjustment mechanism 1A and the intermittent drive mechanism 30A of the height adjustment mechanism 1B are simultaneously locked. Therefore, even if the two upper rod-like bodies 10 try to move downward due to the weight of the connecting rod 102 or the load applied to the connecting rod 102, the two upper upper members 10A and 1B are intermittently driven by the intermittent drive mechanism 30A. The downward movement of the rod-shaped body 10 is stopped simultaneously.

  According to the present embodiment, the height adjustment mechanisms 1A and 1B having the intermittent drive mechanism 30A can simultaneously adjust the heights of the two sets of upper bar-shaped bodies 10. Therefore, it is possible to adjust the height of the connecting rod 102 of the clothes rack 3. Further, by using the intermittent drive mechanism 30A, the connecting rod 102 can be moved at a predetermined movement pitch in accordance with the rotation of the handle 20 (that is, the pin gear 31A).

  Moreover, according to this Embodiment, since the gear 61a is provided in the both ends of the connecting rod 62, the twisting at the time of the height adjustment of the connecting rod 102 can be suppressed.

  Further, according to the present embodiment, since the intermittent drive mechanism 30A has the stop mechanism, the length of the rod-shaped body 100 can be maintained even when a load in the gravity direction is applied. For example, the user who uses the clothes-drying platform 3 can adjust the height of the connecting rod 102 while hanging the laundry on the clothes-drying platform 3.

  Further, according to the present embodiment, since the user only needs to operate the handle 20 with one hand, the user can easily move the upper bar 10. For example, a user using the clothes rack 3 can adjust the height of the connecting rod 102 with one hand while hanging the clothes on the clothes rack 3, and provides the clothes rack 3 that is easy to use. it can.

  In the present embodiment, the height adjustment mechanisms 1A, 1B have the handle 20, but any one of the height adjustment mechanisms 1A, 1B may have the handle 20. For example, if the height adjustment mechanism 1 </ b> A has the handle 20, the height adjustment mechanism 1 </ b> B may not have the handle 20. However, since the height adjustment mechanisms 1 </ b> A and 1 </ b> B have the handle 20, the user can adjust the height of the connecting rod 102 from either the left or right side of the clothes rack 3. Moreover, the clothes-drying stand 3 can be used also in the environment where the place which can be operated is limited.

  In the present embodiment, the configuration in which one link member 60 connects two height adjusting mechanisms 1A and 1B has been described. However, a plurality of link members connect three or more height adjusting mechanisms. You may do it. For example, gears 61a may be provided at both ends and near the center of the link member 60, and a height adjustment mechanism may be coupled to these gears 61a.

  In the present embodiment, the height adjustment mechanisms 1A and 1B in which the handle 20 is directly provided on the pin gears 31A and 31B are used. However, even if the handle 20 and the pin gears 31A and 31B are provided at positions separated from each other. Good. FIG. 12 is a diagram illustrating an example of the refrigerator 4 in which the handle 73 is provided at a position away from the height adjusting mechanism 1A ′.

  The refrigerator 4 mainly includes height adjustment mechanisms 1 </ b> A ′, 1 </ b> B ′, a casing 71, a shelf board 72, a handle 73, and a cord-like body (for example, a rope) 74. The shelf board 72 is provided at the upper ends of the two upper bar-like bodies 10. The handle 73 is provided at a position away from the height adjustment mechanisms 1A 'and 1B'.

  The height adjustment mechanisms 1A 'and 1B' do not have the handle 20, but other configurations are substantially the same as the height adjustment mechanisms 1A and 1B. A cord-like body 74 is provided between the handle 73 and the height adjusting mechanism 1A '. The cord-like body 74 transmits the rotation of the handle 73 to the height adjusting mechanism 1A '. For example, a cord-like body 74 that is a single rope formed in a ring shape is wound around the shaft of the handle 73 and the convex portion 32 of the pin gear 31 </ b> A, and the cord-like body 74 is rotated along with the rotation of the handle 73. The pin gear 31A rotates with the movement of the cord-like body 74, and the height of the upper end portion of the upper rod-like body 10, that is, the height of the shelf board 72 changes with the rotation of the pin gear 31A.

  As a result, the handle 73 is provided at a position away from the height adjustment mechanisms 1A 'and 1B', and the height adjustment mechanisms 1A 'and 1B' can be driven from a distance.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included. .

  For example, the technical idea of the present invention can be applied to any device that adjusts the length in the vertical direction, not limited to a column of a shower head or a clothesline. In particular, the height adjustment mechanism according to the present invention is configured to adjust the length by sliding a plurality of rod-shaped bodies, and is useful for height adjustment when a load is applied to the upper rod-shaped body. For example, the present invention can be applied to a furniture shelf on which a home appliance or the like is placed or a mechanism for moving up and down a shelf in a refrigerator. In this case, the shelf board can be easily moved up and down while an object is placed on the shelf, and the shelf board does not fall off, so that the user can operate it safely.

  Further, in the present invention, “substantially” is a concept including not only a case where they are exactly the same but also errors and deformations that do not lose the identity. For example, “substantially parallel” and “substantially orthogonal” are not limited to strictly parallel and orthogonal. Further, for example, when simply expressing as parallel, orthogonal, etc., not only strictly parallel, orthogonal, etc., but also includes cases of substantially parallel, substantially orthogonal, etc. Further, in the present invention, the “neighborhood” is a concept indicating that when it is in the vicinity of A, for example, it is near A and may or may not include A.

DESCRIPTION OF SYMBOLS 1, 1A, 1B: Height adjustment mechanism 2: Shower apparatus 3: Drying stand 10: Upper bar-shaped body 11: Lower bar-shaped body 12: Connecting pipe 14: Support leg 14a: Bar body 14b: Cylindrical part 20: Handle 21 : Protrusion 30, 30A: Intermittent drive mechanism 31, 31A: Pin gear 32: Protrusion 33, 34: Drive pin 35: Geneva foil 35a: Center hole 35b: Protrusion 36, 36a, 36b, 36c, 36d, 36e, 36f: Protrusion Parts 37a, 37b, 37c, 37d, 37e, 37f: groove 38: gear 40: transmission mechanism 41: pinion gear 42: rack gear 43: shaft hole 51: shaft 60: link member 61: gear member 61a: gear 61b: convex portion 61c: Press-fit portion 62: Connecting rod 80, 80A: Cover 81: Rib 82: Through hole 83: Through hole 90, 90A: Case 91: Rib 92: Through Hole 93: Holding portion 93a, 93b: Protrusion 100: Bar-shaped body 101: Shower head 102: Connecting rod 361a, 362a, 361b, 362b, 361c, 362c, 361d, 362d, 361e, 362e, 361f, 362f: Side surfaces 363a, 363b , 363c, 363d, 363e, 363f: tip portion

Claims (6)

A height adjusting mechanism that is connected to a rod-like body having an upper rod-like body and a lower rod-like body provided to be slidable with each other, and that adjusts the height of the upper end portion of the upper rod-like body,
An intermittent drive mechanism having a pin gear provided with a drive pin and a Geneva foil having a plurality of grooves in which the drive pin moves;
A transmission mechanism for transmitting the rotational movement of the Geneva foil to the upper bar, and sliding the upper bar with respect to the lower bar;
With
The transmission mechanism extends the entire length of the rod-shaped body when the Geneva foil rotates in the first direction, and increases the total length of the rod-shaped body when the Geneva foil rotates in the second direction opposite to the first direction. Shrink,
The intermittent drive mechanism includes a stop mechanism that locks the Geneva foil so that the Geneva foil does not rotate in the second direction. The pin gear has a second drive pin;
The drive pin and the second drive pin are arranged at positions symmetrical with respect to the rotation center of the pin gear,
The Geneva foil has a plurality of petal-like protrusions extending radially outward from the center of rotation,
The drive pin and the second drive pin slide along the side surface of the protrusion as the pin gear rotates.
When the driving pin and the second driving pin are arranged along the vertical direction, the driving pin and the second driving pin are in contact with the adjacent protrusions to lock the Geneva foil. The height adjusting mechanism according to claim 1. It further includes a rotatable handle,
The height adjusting mechanism according to claim 1, wherein the pin gear rotates in conjunction with rotation of the handle. The transmission mechanism has a rack gear and a pinion gear,
The pinion gear rotates in conjunction with the rotation of the Geneva foil,
The height adjustment mechanism according to any one of claims 1 to 3, wherein the rack gear is formed on a side surface of the upper bar-shaped body along a longitudinal direction of the upper bar-shaped body. A cord-like body provided between the handle and the intermittent drive mechanism;
The height adjusting mechanism according to claim 3, wherein the cord-like body transmits the rotation of the handle to the intermittent drive mechanism. A second intermittent drive mechanism and a second transmission mechanism connected to a second rod-shaped body having a second upper rod-shaped body and a second lower rod-shaped body slidably provided with each other;
A link member that rotates in conjunction with the rotational movement of the pin gear;
With
The second intermittent drive mechanism includes a second pin gear having substantially the same shape as the pin gear, and a second geneva wheel having substantially the same shape as the Geneva foil.
The second transmission mechanism transmits the rotational movement of the second Geneva foil to the second upper bar-shaped body, and slides the second upper bar-shaped body with respect to the second lower bar-shaped body,
The link member is connected to the pin gear and the second pin gear,
The height adjusting mechanism according to any one of claims 1 to 5, wherein the pin gear and the second pin gear rotate in conjunction with rotation of the link member.

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