JP2012127435A - Single-input multiple-output switching mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a single-input multiple-output switching mechanism with less limitation on layout of a gear of an output device, preventing the gear of the output device from rotating, suppressing cost increase due to increase in the number of components, and suppressing increase in time for switching the output device.SOLUTION: The single-input multiple-output switching mechanism 1 includes: a motor 10; a carrier 20 rotated by the motor 10; a guide 30 arranged relatively rotatably with the carrier 20 and having a male thread 31 on the outer surface; a movable gear 40 having a female thread 44 engaging with the male thread 31 of the guide 30, and external teeth 41 on the external surface and moving along the guide 30 while rotating integrally with the carrier 20; and a first output gear 50 and a second output gear 60 meshing with the external teeth 41 by movement of the movable gear 40.

Description

  The present invention relates to a one-input multiple-output switching mechanism that switches and outputs power from a driving source to a plurality of output destinations.

  As a one-input multiple-output switching mechanism that switches the power from the drive source of the prior art to multiple output destinations, the worm shaft is moved in the axial direction using the load from the worm wheel side, depending on the position of the worm shaft There is one that switches an output gear that outputs power (see, for example, Patent Document 1).

  In addition, there is a type in which an output destination is switched by moving an output shaft of a motor in an axial direction using a motor capable of rotationally driving the output shaft and moving in the axial direction (see, for example, Patent Document 2).

  Moreover, there exists a thing which arrange | positions a locking mechanism in two output destinations of a planetary gear, and outputs from the side which cancel | released the lock | rock (for example, refer patent document 3).

  Also, there are two one-way clutches that select whether to drive the position selection gear or the output destination according to the rotation direction of the drive source, and switch the output destination according to the position of the position selection gear (for example, , See Patent Document 4).

JP 2009-145551 A JP-A-7-244320 Japanese Patent Publication No. 7-37218 JP 2000-74158 A

  However, in the one-input / multiple-output switching mechanism in Patent Document 1, the worm shaft is moved between one output gear and the other output gear in order to move the worm shaft using a load from the worm wheel side. It is necessary to always mesh, and the distance between the gears is limited in laying out the output gear. Further, since either one of the output destination gears always rotates, it is impossible to create a state in which neither output destination output gear rotates.

  In addition, the one-input / multiple-output switching mechanism in Patent Document 2 requires a special motor that can rotate and drive the output shaft in the axial direction. Further, in order to switch the output shaft of the motor between rotation driving and axial movement, a mechanism for switching between a plurality of coils and a coil to be energized is necessary. Therefore, the cost of the motor is increased.

  In addition, the one-input / multiple-output switching mechanism in Patent Document 3 requires two lock mechanisms in addition to the planetary gear. In order to remotely operate the output destination lock mechanism, a separate drive source for operating the two lock mechanisms is required. Therefore, the number of parts increases and the cost of the one-input / multiple-output switching mechanism increases.

  In addition, the one-input multiple-output switching mechanism in Patent Document 4 requires two one-way clutches and a position selection gear that meshes with a plurality of output destination gears, which increases the number of parts and reduces the cost of the one-input multiple-output switching mechanism. Invite an increase. In order to switch the output destination, it is necessary to drive the output destination gear by switching the rotation direction of the drive source after moving the position selection gear to a position where it engages with the desired output destination gear. There is a problem that switching takes time.

  The present invention has been made in view of the above-mentioned problems, and there are fewer restrictions on the layout of the output gear than in the past, and it is possible to create a state in which the output gear does not rotate, resulting in an increase in cost due to an increase in the number of parts. An object of the present invention is to provide a one-input / multiple-output switching mechanism that suppresses an increase in switching time of an output gear.

  The first problem-solving means of the present invention includes: a drive source; a carrier that is rotated by the drive source; a guide that is provided so as to be relatively rotatable with the carrier and having an external thread portion on an outer surface; and the external thread of the guide And a toothed portion on the outer surface, a movable gear that moves along the guide while rotating integrally with the carrier, and the toothed portion by movement of the movable gear. And a plurality of meshing output gears.

  The second problem-solving means of the present invention has a configuration in which the movable gear has a section that meshes with only one of the plurality of output gears in a range in which the movable gear moves.

  The third problem solving means of the present invention is such that the carrier has a rail member provided along the guide, and the movable gear has a through-hole through which the rail member passes.

  In the fourth problem solving means of the present invention, the output gear is constituted by a spur gear provided in parallel with the guide.

  According to a fifth means for solving the problems of the present invention, the rotation shaft of the output gear has a worm gear, and the worm gear meshes with the worm wheel.

  In the one-input / multiple-output switching mechanism of the present invention, when the carrier is rotated by the drive source, the movable gear moves along the guide while the female screw portion is screwed with the male screw portion and rotates integrally with the carrier. Even in a state where the movable gear is not meshed with the output gear, the movable gear can move along the guide as the carrier rotates. Since it is not always necessary to mesh with the output gear of the output destination in order to move the movable gear, the degree of freedom of layout of the output gear is higher than before, and it is possible to create a state where none of the output gears rotate.

  To switch the output gear, to switch the output shaft of the prior art motor to rotation drive and axial movement and to switch the coil to be energized and to remotely operate the output destination lock mechanism and lock mechanism No drive source, two one-way clutches, and a position selection gear that meshes with a plurality of output gears of output destinations are unnecessary, so that an increase in cost due to an increase in the number of parts can be suppressed.

  The movable gear moves along the guide while rotating integrally with the carrier to switch the output gear of the output destination, so that the gear is moved to the position where it meshes with the output gear of the desired output destination in the prior art switching of the output destination. Compared with the case where the output direction gear is driven after the rotation direction is switched, the switching time of the output destination output gear is shortened.

  In addition, since the movable gear is configured to mesh with only one of the plurality of output gears in a predetermined section, the driving force is transmitted to only one output gear by one drive source and is driven to the other output gear. Since no force is transmitted, multiple outputs can be switched.

  Further, since the movable gear has a through hole through which the rail member of the carrier penetrates, the rail member engages with the through hole to rotate integrally with the carrier, and can move along the guide.

  Further, since the output gear is constituted by a spur gear provided in parallel with the guide, the movable gear and the output gear mesh with each other when the movable gear moves along the guide, and the output destination can be switched.

  Further, since the rotation shaft of the output gear has a worm gear and the worm gear meshes with the worm wheel, the output gear can be self-locked.

It is explanatory drawing which shows the state with which a movable gear meshes with a 1st output gear with the 1 input 2 output switching mechanism of this invention. It is AA sectional drawing of the 1 input 2 output switching mechanism of this invention. It is explanatory drawing which shows the state with which the movable gear does not mesh | engage with a 1st output gear and a 2nd output gear by the 1 input 2 output switching mechanism of this invention. It is explanatory drawing which shows the state which a movable gear meshes with a 2nd output gear with the 1 input 2 output switching mechanism of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory diagram showing a state in which the movable gear 40 meshes with the first output gear 50 in the one-input / two-output switching mechanism 1 (one-input / multiple-output switching mechanism) of the present invention. In this embodiment, a case will be described in which the one-input / two-output switching mechanism 1 is applied to output switching to a power slide device (hereinafter referred to as PSD) (not shown) and a closer (not shown).

  The one-input / two-output switching mechanism 1 operates opening / closing of a motor 10 (drive source), a carrier 20 that is rotated by power from the motor 10, a guide 30 fixed to a housing 32, a movable gear 40, and a PSD. It comprises a first output gear 50 (output gear) and a second output gear 60 (output gear) for operating the closer lock / unlock.

  The motor 10 has a rotating shaft 11 connected to the carrier 20, and the rotating shaft 11 rotates integrally with the carrier 20. The carrier 20 is connected to the rotating shaft 11 to rotate, a first disk 21 that rotates, a second disk 22 that has a hole through which the guide 30 can rotate in the center, and one end fixed to the first disk 21. The other end is fixed to the second disk 22, and is composed of two columnar rails 23 and 24 provided along the guide 30. The guide 30 is fixed to the housing 32 so as to be rotatable relative to the carrier 20, and a male screw 31 (male screw portion) is formed on the outer surface. The movable gear 40 is provided with external teeth 41 that mesh with the first output gear 50 and the second output gear 60 on the outer surface, and the range E when the end surface of the gear 40 on the motor 10 side is used as a reference along the guide 30. Moving. The first output gear 50 is a spur gear provided in parallel with the guide 30 and is provided at a position where it can mesh with the movable gear 40 (section F when the end face of the gear 40 on the motor 10 side is used as a reference). A worm gear 52 is provided on the rotation shaft 51 of the first output gear 50, and the worm gear 52 meshes with a worm wheel 53 that opens and closes the PSD.

  FIG. 2 is a cross-sectional view of the one-input / two-output switching mechanism 1 according to the present invention taken along the line AA. On the side surface of the movable gear 40, through holes 42 and 43 through which the rails 23 and 24 pass are formed. External teeth 41 that mesh with the first output gear 50 and the second output gear 60 are formed on the outer surface of the movable gear 40. The external teeth 41 are spur gears. On the inner surface of the movable gear 40, a female screw 44 that is screwed with the male screw 31 of the guide 30 is formed.

  FIG. 3 is an explanatory diagram showing a state where the movable gear 40 does not mesh with the first output gear 50 and the second output gear 60 in the one-input / two-output switching mechanism 1 of the present invention. In the first output gear 50 and the second output gear 60, the distance D between the first output gear 50 and the second output gear 60 is greater than the length L in the direction of the guide 30 of the movable gear 40 (D> L ). When the movable gear 40 is positioned between the first output gear 50 and the second output gear 60, the power of the motor 10 is not transmitted to the first output gear 50 and the second output gear 60.

  FIG. 4 is an explanatory diagram showing a state in which the movable gear 40 meshes with the second output gear 60 in the one-input / two-output switching mechanism 1 of the present invention. The second output gear 60 is a spur gear provided in parallel with the guide 30 and meshes with the movable gear 40 (section G when the end surface of the gear 40 on the motor 10 side is used as a reference). A worm gear 62 is provided on the rotation shaft 61 of the second output gear 60, and the worm gear 62 meshes with a worm wheel 63 that drives the lock / unlock of the closer.

  The operation when the PSD of the one-input / two-output switching mechanism 1 of the present invention is closed to lock the closer will be described with reference to FIGS.

  In the one-input / two-output switching mechanism 1 in FIG. 1, when the PSD is driven to close, the motor 10 is supplied with electric power from the control device and the rotating shaft 11 rotates. When the rotating shaft 11 rotates, the first disk 21 of the carrier 20 rotates integrally. When the first disk 21 rotates, the rails 23 and 24 having one end fixed to the first disk 21 and the second disk 22 to which the other ends of the rails 23 and 24 are fixed rotate. When the rails 23 and 24 rotate, the movable gear 40 engages with the rails 23 and 24 and the through holes 42 and 43 through which the rails 23 and 24 pass, respectively, so that the movable gear 40 also rotates integrally with the rails 23 and 24. (Forward). Since the guide 30 is fixed to the housing 32, the movable gear 40 moves in a direction away from the motor 10 along the guide 30 by the male screw 31 of the guide 30 and the female screw 44 of the movable gear 40 being screwed together. At this time, since the movable gear 40 meshes with the first output gear 50 in the section F, the first output gear 50 rotates the worm gear 52 and rotates the worm wheel 53 in the direction in which the PSD is closed. The PSD is driven in the closing direction. The movable gear 40 does not mesh with the second output gear 60. At this time, since the worm gear 62 and the worm wheel 63 mesh with each other, the second output gear 60 is in a so-called self-locking state where the input from the worm wheel 63 is locked by the worm gear 62.

  When the movable gear 40 moves to the position where the meshing between the movable gear 40 and the first output gear 50 is disengaged (outside the section F), the PSD is fully closed. At this time, the first output gear 50 is also in a self-locking state where the input from the worm wheel 53 is locked by the worm gear 52 because the worm gear 52 and the worm wheel 53 are engaged with each other.

  When the movable gear 40 of FIG. 3 rotates (forward rotation) and is positioned between the first output gear 50 and the second output gear 60, the power of the motor 10 is transmitted between the first output gear 50 and the second output gear 60. Is not communicated to. At this time, the PSD is in a self-locking state when an electromagnetic clutch (not shown) is energized. The closer is also self-locking.

  When the movable gear 40 of FIG. 4 rotates (forward rotation) and moves to a position (section G) that meshes with the second output gear 60, the second output gear 60 rotates the worm gear 62 and meshes with the worm gear 62. 63 rotates. In the PSD, the energization of the electromagnetic clutch is turned off, and the PSD becomes free. The closer changes the door lock from the unlocked state to the locked state.

  When the PSD is driven to open, the rotating shaft 11 of the motor 10 is reversely rotated by the control device to reverse the movable gear 40 and move along the guide 30 in a direction approaching the motor 10. The movable gear 40 meshes with the second output gear 60 and reversely rotates the worm gear 62 (section G). The PSD is in a self-locking state when the electromagnetic clutch is energized. The worm wheel 63 meshing with the worm gear 62 returns the closer lever to the initial position, and the door lock release motor (not shown) changes the door lock from the locked state to the unlocked state.

  When the movable gear 40 reverses and moves between the first output gear 50 and the second output gear 60 (outside the section G), the power of the motor 10 is transferred between the first output gear 50 and the second output gear 60. Not transmitted. The PSD is in a self-locking state when the electromagnetic clutch is energized, and the closer is also in a self-locking state.

  When the movable gear 40 reverses and meshes with the first output gear 50 in the section F, the first output gear 50 rotates the worm gear 52 in the reverse direction and rotates the worm wheel 53 in the opening direction. The PSD is opened and the closer is in a self-locking state.

  In the one-input / two-output switching mechanism 1 of the present invention, when the carrier 20 is rotated by the motor 10, the movable gear 40 is rotated integrally with the carrier 20 by the female screw 44 being screwed with the male screw 31 provided on the guide 30. While moving along the guide 30. The movable gear 40 can move along the guide 30 as the carrier 20 rotates even when the movable gear 40 is not meshed with the first output gear 50 and the second output gear 60. In order to move the movable gear 40, it is not always necessary to mesh with the first output gear 50 and the second output gear 60 that are the output destinations, so that the degree of freedom of layout of the first output gear 50 and the second output gear 60 is conventionally increased. Further, it is possible to create a state in which neither the first output gear 50 nor the second output gear 60 rotates.

  In order to switch between the first output gear 50 and the second output gear 60, a mechanism for switching between a plurality of coils for switching the output shaft of a conventional motor to rotational drive and axial movement, and a coil for energization, and an output destination lock mechanism And a drive source for remotely operating the lock mechanism, and a position selection gear that meshes with two one-way clutches and multiple output destination gears are not required, thereby suppressing an increase in cost due to an increase in the number of parts. Can do.

  Since the movable gear 40 moves along the guide 30 while rotating integrally with the carrier 20 and switches between the first output gear 50 and the second output gear 60, the gear is used for switching the output destination of the prior art. Compared with the case of driving the output destination gear by switching the rotation direction after moving to the position where the output gear meshes with the output gear, the output destination switching time can be shortened.

  Further, the movable gear 40 is configured to mesh only with the first output gear 50 in the section F and mesh with only the second output gear 60 in the section G. In the section F, the driving force of one motor 10 is transmitted only to the first output gear 50 and is not transmitted to the second output gear 60. In the section G, the driving force is transmitted only to the second output gear 60, and the driving force is not transmitted to the first output gear 50. Therefore, the driving force of the motor 1 can be switched between the first output gear 50 and the second output gear 60.

  Further, since the movable gear 40 has through holes 42 and 43 through which the rails 23 and 24 of the carrier 20 pass, the movable gear 40 rotates integrally with the carrier 20 by engaging the rails 23 and 24 with the through holes 42 and 43. Can move along the guide 30.

  In addition, since the first output gear 50 and the second output gear 60 are constituted by spur gears provided in parallel with the guide 30, the movable gear 40 moves along the guide 30, so The teeth 41 mesh with the first output gear 50 and the second output gear 60, and can switch the output destination.

  Further, the rotation shafts 51 and 61 of the first output gear 50 and the second output gear 60 have worm gears 52 and 62, respectively. The worm gears 52 and 62 are configured to mesh with the worm wheels 53 and 63, respectively. The gear 50 and the second output gear 60 can be self-locked.

  In the present embodiment, the case where the one-input / two-output switching mechanism 1 is applied to the output switching between the PSD and the closer has been described. However, the present invention is not limited to this. For example, the present invention can be applied to the output switching between the window regulator and the PSD. Good. Further, the number of output gears is not limited to two, and may be three or more. Further, the movable gear may simultaneously mesh with a plurality of output gears.

1 single input double output switching mechanism (single input multiple output switching mechanism)
10 Motor (drive source)
20 Carrier 23 Rail (Rail member)
24 rail (rail member)
30 Guide 31 Male thread (Male thread)
40 Movable gear 41 External teeth (tooth part)
42 Through hole 43 Through hole 44 Female thread (Female thread part)
50 First output gear (output gear)
51 Rotating shaft 52 Worm gear 53 Worm wheel 60 Second output gear (output gear)
61 Rotating shaft 62 Worm gear 63 Worm wheel E Range F Section G Section

Claims (5)

A driving source;
A carrier rotated by the drive source;
A guide provided rotatably relative to the carrier and having an external thread portion on an outer surface;
A movable gear that has a female screw portion that is screwed with the male screw portion of the guide, and a tooth portion on an outer surface, and moves along the guide while rotating integrally with the carrier;
A one-input multiple-output switching mechanism, comprising: a plurality of output gears that mesh with the teeth by movement of the movable gear. 2. The one-input multiple-output switching mechanism according to claim 1, wherein the movable gear has a section that meshes with only one of the plurality of output gears in a range in which the movable gear moves. The carrier has a rail member provided along the guide,
The one-input multiple-output switching mechanism according to claim 1, wherein the movable gear has a through hole through which the rail member passes. The single-output multiple-output switching mechanism according to any one of claims 1 to 3, wherein the output gear is a spur gear provided in parallel with the guide. The single-input multiple-output switching mechanism according to any one of claims 1 to 4, wherein a rotation shaft of the output gear includes a worm gear, and the worm gear meshes with a worm wheel.

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