US20110072925A1 - Driving force transmission mechanism - Google Patents

Driving force transmission mechanism Download PDF

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Publication number
US20110072925A1
US20110072925A1 US12/890,162 US89016210A US2011072925A1 US 20110072925 A1 US20110072925 A1 US 20110072925A1 US 89016210 A US89016210 A US 89016210A US 2011072925 A1 US2011072925 A1 US 2011072925A1
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United States
Prior art keywords
gear
driving force
gear teeth
teeth
damper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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US12/890,162
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English (en)
Inventor
Shintaro Ikeda
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Keihin Corp
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Keihin Corp
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Filing date
Publication date
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Assigned to KEIHIN CORPORATION reassignment KEIHIN CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IKEDA, SHINTARO
Publication of US20110072925A1 publication Critical patent/US20110072925A1/en
Priority to US14/743,372 priority Critical patent/US9856963B2/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00664—Construction or arrangement of damper doors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/001—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for conveying reciprocating or limited rotary motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
    • F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H2057/0056—Mounting parts arranged in special position or by special sequence, e.g. for keeping particular parts in his position during assembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears

Definitions

  • the present invention relates to a driving force transmission mechanism for transmitting and outputting an output force of a driving section via a drive gear and a driven gear.
  • a vehicular air conditioning apparatus which is mounted in a passenger vehicle, cool air that is cooled by an evaporator serving as a cooling means and warm air that is heated by a heater core serving as a heating means are mixed together in a housing thereof by adjusting a degree of opening of an air mixing damper, and such mixed air is blown out selectively by opening and closing outlet doors, which are provided with respect to outlet ports disposed in the vehicle compartment.
  • the air mixing damper and the outlet dampers include shafts that are axially supported with respect to the housing, such that by rotating the air mixing damper and the outlet dampers by given angles about the shafts, a mixing ratio of warm air and cool air or an opened/closed state of the outlet ports can be switched.
  • a driving force transmission mechanism is used, which is capable of transmitting a driving force of a drive source to the air mixing damper, etc., through a plurality of gears.
  • such a driving force transmission mechanism is equipped with a drive gear connected to a drive source, a first transmission gear enmeshed with a small gear on the drive gear, a second transmission gear enmeshed with a second gear on the first transmission gear, and an output gear enmeshed with the second transmission gear and to which a driving force from the drive gear is transmitted.
  • the output gear comprises one fat tooth, a tooth thickness of which is comparatively thick.
  • the fat tooth enmeshes with a gear groove formed in a long tooth region of the second transmission gear where the gear width is comparatively long.
  • a general object of the present invention is to provide a driving force transmission mechanism, in which positioning of a drive gear and a driven gear can easily be carried out when the drive gear and the driven gear are assembled together. Additionally, the driving force transmission mechanism also enables transmission of a driving force from the drive gear to the driven gear to be performed reliably and effectively.
  • the present invention is characterized by a driving force transmission mechanism for transmitting a driving force from a driving section, comprising a drive gear connected to the driving section and having a plurality of first gear teeth on an outer circumferential region thereof, a driven gear having a plurality of second gear teeth on an outer circumferential region thereof, which are enmeshed with the first gear teeth, the driven gear being enmeshed with the drive gear, a positioning member provided on the outer circumferential regions of the drive gear and the driven gear, the positioning member being adjacent to the first gear teeth or the second gear teeth, for performing positioning of the drive gear and the driven gear in a direction of rotation thereof, and a meshing member disposed at an interior of the positioning member for causing the drive gear and the driven gear to enmesh mutually.
  • a positioning member that lies adjacent to the first and second gear teeth is provided, and when the drive gear and the driven gear are assembled together, positioning in the rotational direction is carried out by means of the positioning member. Together therewith, by means of the meshing member disposed in the interior of the positioning member, the drive gear and the driven gear become enmeshed mutually at the positioning member.
  • the positioning member which is disposed on the outer circumferential regions of the drive gear and the driven gear, ease of assembly of the driving force transmission mechanism can be enhanced.
  • the positioning member since with the positioning member, meshing of the drive gear and the driven gear can be brought about by the meshing member, even at the positioning member, the driving force from the drive gear can be transmitted reliably and effectively to the driven gear via the meshing member.
  • FIG. 1 is an exterior perspective view of a vehicular air conditioning apparatus to which a driving force transmission mechanism according to an embodiment of the present invention is applied;
  • FIG. 2 is an overall cross sectional view of the vehicular air conditioning apparatus shown in FIG. 1 ;
  • FIG. 3 is a perspective view with partial omission showing the relationship between a drive source, a driving force transmission mechanism, and an air mixing damper;
  • FIG. 4 is a perspective view with partial omission showing the features of FIG. 3 , as seen from a different direction;
  • FIG. 5 is a front view of a driving force transmission unit made up from a driving section and the driving force transmission mechanism
  • FIG. 6 is a rear view of the driving force transmission unit shown in FIG. 5 , as seen from a side of a casing;
  • FIG. 7 is a front view showing an enmeshed condition of a first gear, a second gear, and a damper gear that make up the driving force transmission mechanism;
  • FIG. 8 is a plan view of the enmeshed condition of the first gear, the second gear, and the damper gear shown in FIG. 7 , as seen from an opposite side;
  • FIG. 9 is an exterior perspective view of a second gear that constitutes part of a driving force transmission mechanism.
  • FIG. 10 is an enlarged perspective view showing the vicinity of a damper gear on a damper shaft that constitutes part of the driving force transmission mechanism.
  • reference numeral 10 indicates a vehicular air conditioning apparatus to which a driving force transmission mechanism according to an embodiment of the present invention is applied.
  • the vehicular air conditioning apparatus 10 includes a casing 12 constituted by a plurality of respective air passages therein, an evaporator 14 arranged in the interior of the casing 12 that cools the air, a heater core 16 for heating the air, an air mixing damper (switching damper) 18 that performs heat exchange by means of the evaporator 14 and the heater core 16 on air that is introduced to the interior of the casing 12 , and which mixes at a predetermined mixing ratio cool air and warm air having been adjusted in temperature, thereby producing mixed air, and a driving force transmission mechanism 22 that transmits a driving force of a drive source (driving section) 20 , which is disposed on a side surface of the casing 12 , to the air mixing damper 18 for causing rotary displacement thereof.
  • a plurality of outlet port dampers 24 a to 24 c are provided for selectively supplying into the vehicle compartment the mixed air from each of the opened outlet ports.
  • the vehicular air conditioning apparatus 10 is installed such that the right side shown in FIG. 1 (the direction of the arrow A) forms a front side thereof, and the left side shown in FIG. 1 (the direction of the arrow B) forms a rear side thereof.
  • the arrow A direction shall be referred to as a forward direction
  • the arrow B direction shall be referred to as a rearward direction.
  • the casing 12 is made up from substantially symmetrically shaped first and second divided casings 26 , 28 .
  • a duct 30 is installed, which is connected to a blower fan, through which air is introduced into the interior of the casing 12 .
  • the evaporator 14 is disposed, which is positioned in the vicinity of an opening portion at the forward side in the vehicular air conditioning apparatus 10 .
  • the heater core 16 is separated a predetermined distance from the evaporator 14 and disposed on the rearward side in the casing 12 .
  • the air mixing damper 18 is disposed between the evaporator 14 and the heater core 16 , for adjusting the flow amount of air, which has been cooled by the evaporator 14 , and which flows to the side of the heater core 16 when flowing toward the downstream side in the casing 12 .
  • the air mixing damper 18 comprises a plate, which is arcuate shaped in cross section having a comparatively large radius of curvature, and which is formed with a substantially constant thickness.
  • the air mixing damper 18 is disposed respectively in the first and second divided casings 26 , 28 .
  • the air mixing damper 18 is disposed so as to be convexly shaped in a direction separating away from the evaporator 14 .
  • a rack member 32 is formed, which is enmeshed with a later-described damper shaft 50 of the driving force transmission mechanism 22 .
  • the rack member 32 extends along inner wall surfaces of the first and second divided casings 26 , 28 from one end portion to the other end portion of the air mixing damper 18 , facing the inner wall surfaces of the first and second divided casings 26 , 28 .
  • the air mixing damper 18 is disposed in a widthwise direction along the casing 12 . Both side ends of the air mixing damper 18 are guided along a pair of guide walls 34 a , 34 b , the guide walls 34 a , 34 b being disposed on inner wall surfaces of the first and second divided casings 26 , 28 . In the following description, an explanation shall be given only of the air mixing damper 18 disposed on the side of the first divided casing 26 .
  • the air mixing damper 18 is positioned downward so as to face the heater core 16 in the interior of the casing 12 , air that passes through the evaporator 14 is prevented by the air mixing damper 18 from flowing through to the heater core 16 .
  • the air mixing damper 18 is moved upwardly away from the heater core 16 , air that passes through the evaporator 14 is allowed to flow to the heater core 16 .
  • the air mixing damper 18 is disposed in an intermediate position, a portion of the air that passes through the evaporator 14 flows through to the heater core 16 , whereas the remaining air flows into the interior of the casing 12 without flowing to the side of the heater core 16 .
  • the drive source 20 is made up from a servo motor, for example, rotation of which is controlled based on a control signal from a non-illustrated controller, and includes a housing 36 , and a rotary drive shaft 38 disposed substantially centrally in the housing 36 (see FIGS. 4 and 6 ).
  • the drive source 20 for example, is fixed with respect to a side surface of the first divided casing 26 via a mounting bracket 40 having a plurality of attachment members.
  • the mounting bracket 40 is formed substantially in a T shape, and is fixed through plural bolts 42 at a position downwardly from the drive source 20 on the first divided casing 26 .
  • the drive source 20 is fixed such that the drive shaft 38 thereof faces toward a side surface of the first divided casing 26 , in a state of being separated a predetermined distance with respect to the side surface.
  • the driving force transmission mechanism 22 includes a first gear (drive gear) 44 installed on the drive shaft 38 of the drive source 20 , a second gear (driven gear) 46 held in mesh with the first gear 44 , a gear holder 48 connected to the housing 36 of the drive source 20 and which supports the second gear 46 , and a damper shaft 50 accommodated inside the casing 12 and enmeshed with the second gear 46 and with the rack member 32 of the air mixing damper 18 .
  • the first gear 44 is formed in a fan-like shape, and is connected to the drive shaft 38 via a hole formed in a central portion thereof. By being fixed to the drive shaft 38 , which is formed with a semicircular shape in cross section, relative rotational displacement between the first gear 44 and the drive shaft 38 is regulated. More specifically, the first gear 44 is rotatably driven in unison (integrally) with drive actions of the drive source 20 . The first gear 44 is disposed between the drive source 20 and the side surface of the first divided casing 26 .
  • first gear teeth (first teeth) 52 of a radially concave/convex shape are formed along the circumferential direction.
  • first locator grooves (grooves) 54 a , 54 b from which the first gear teeth 52 are lacking, are formed respectively.
  • the first locator grooves 54 a , 54 b are formed with predetermined widths centrally about the position of a central first gear tooth 52 from among three adjacent first gear teeth 52 , and are formed so as to enable insertion therein respectively of first and second locator parts 56 , 66 (described later) which make up part of the second gear 46 .
  • the first locator grooves 54 a , 54 b are formed with substantially trapezoidal shapes in cross section along the thickness direction of the first gear 44 .
  • First narrow teeth (meshing teeth) 58 are formed in the first locator grooves 54 a , 54 b , having a width dimension from a central region of the aforementioned thickness direction to an end surface on the side of the drive source 20 .
  • the first narrow teeth 58 are formed to be narrower than the first gear teeth 52 and at the same pitch as the first gear teeth 52 . Further, the first narrow teeth 58 are formed with the same cross sectional shape. Stated otherwise, the first narrow teeth 58 are set to have a smaller width dimension than the width of the first gear teeth 52 , and are formed at positions corresponding to each of the first locator grooves 54 a , 54 b , respectively.
  • the second gear 46 is disposed upwardly of the first gear 44 substantially in the same plane therewith.
  • a shaft member 60 which is provided on and projects from the center thereof, is supported rotatably by insertion into a hole 62 of the gear holder 48 .
  • a plurality of second gear teeth (second teeth) 64 of a concave/convex shape are formed on an outer circumferential region of the second gear 46 .
  • the second gear teeth 64 are enmeshed with the first gear teeth 52 of the first gear 44 .
  • a predetermined region along the circumferential direction of the second gear 46 is reduced in diameter in a radial inward direction, and the second gear teeth 64 are not provided on such a reduced diameter region.
  • the first locator part (engagement member) 56 is formed at a position between the second gear teeth 64
  • the second locator part (engagement member) 66 is formed at a position between the second gear teeth 64
  • the first and second locator parts 56 , 66 are formed respectively by two adjacent second gear teeth 64 , and wall portions 68 a , 68 b that join the second gear teeth 64 to one another.
  • the first and second locator parts 56 , 66 are formed with U-shapes in cross section, which open toward the side opposite from the gear holder 48 (see FIGS. 6 and 9 ).
  • the first and second locator parts 56 , 66 are formed at substantially the same diameter as the tooth-end diameter of the second gear teeth 64 , and together therewith, at an inside part surrounded by two of the second gear teeth 64 and the wall portions 68 a , 68 b , the first and second locator parts 56 , 66 include meshing grooves 70 a , 70 b (see FIG. 8 ), which engage with a (later described) first narrow tooth 58 and second narrow tooth 90 (meshing teeth).
  • the first gear teeth 52 and the second gear teeth 64 become enmeshed, and together therewith, upon rotation of the first and second gears 44 , 46 , the first locator part 56 engages within one of the first locator grooves 54 a on the first gear 44 , and the second locator part 66 is engaged with respect to the other first locator groove 54 b.
  • first and second locator parts 56 , 66 are engaged respectively within the first locator grooves 54 a , 54 b on the first gear 44 , the first narrow teeth 58 of the first gear 44 become engaged with respect to the meshing grooves 70 a , 70 b formed therein, whereupon the driving force from the first gear 44 is transmitted to the second gear 46 via the first narrow teeth 58 and the meshing grooves 70 a , 70 b.
  • the driving force transmission mechanism 22 including the first and second gears 44 , 46 when the driving force transmission mechanism 22 including the first and second gears 44 , 46 is assembled, by insertion of the first locator part 56 into the first locator groove 54 a of the first gear 44 , such parts function mutually as a positioning means for performing positioning in the direction of rotation. Together therewith, by engagement of the first narrow tooth 58 in the meshing grooves 70 a , 70 b formed therein, a driving force transmitting function also is provided, by which the driving force from the first gear 44 can reliably be transmitted to the second gear 46 .
  • the gear holder 48 is formed in a substantially triangular shape and tapers from a lower portion toward an upper portion thereof.
  • the gear holder 48 is connected to the housing 36 of the drive source 20 through a first mounting section 72 formed at the lower portion thereof, and is fixed to a side wall of the first divided casing 26 through a second mounting section 74 formed at the upper portion. More specifically, the first mounting section 72 is fastened together to the upper portion of the housing 36 by two bolts 76 , whereas the second mounting section 74 is fixed by a single bolt 76 while being separated a predetermined distance from the side surface of the first divided casing 26 .
  • the hole 62 is formed through which the shaft member 60 of the second gear 46 is inserted, such that by insertion and fitting of the shaft member 60 , the second gear 46 is retained in a rotatable manner.
  • the second gear 46 is arranged between a holder and the side wall of the first divided casing 26 .
  • a shaft groove 78 is formed, which extends upwardly in an inclined fashion toward the second mounting section 74 .
  • An end of a later-described damper shaft 50 is supported rotatably with respect to the shaft groove 78 .
  • the shaft groove 78 is formed in a straight shape while tapering gradually in a direction separating away from the hole 62 , the end thereof being formed with a semicircular shape in cross section.
  • a damper shaft 50 is provided that confronts the inner wall surface of the air mixing damper 18 , the damper shaft 50 being disposed along the widthwise direction of the casing 12 .
  • One end of the damper shaft 50 is supported rotatably with respect to a center plate (not shown) sandwiched between the first divided casing 26 and the second divided casing 28 , whereas the other end thereof is inserted into a shaft hole 80 (see FIG. 1 ) provided in a side of the first divided casing 26 .
  • a damper gear 82 is formed on the outer side of the first divided casing 26 , which is enmeshed with the second gear 46 .
  • a support shaft 84 having a radially inward reduced diameter is formed, which is inserted into and supported rotatably in the shaft groove 78 of the gear holder 48 .
  • the support shaft 84 is axially supported in the end of the shaft groove 78 that is formed with the semicircular shape in cross section.
  • damper shaft 50 is supported by the center plate (not shown) and the gear holder 48 , such that the damper shaft 50 is supported rotatably in the casing 12 .
  • pinion gears 86 are formed respectively at positions facing the rack member 32 of the air mixing damper 18 for being enmeshed respectively with respect to the rack member 32 . More specifically, by rotation of the damper shaft 50 , under engagement of the pinion gear 86 and the rack member 32 , the air mixing damper 18 is moved in upward and downward directions along the guide walls 34 a , 34 b of the casing 12 .
  • the damper gear 82 has a predetermined width along the axial direction of the damper shaft 50 , with a plurality of gear teeth being formed along the outer circumferential surface thereof.
  • a second locator groove (groove) 88 is formed on the damper gear 82 .
  • the second locator groove 88 is formed with a predetermined width centrally about the position of a central gear tooth from among three adjacent gear teeth, and is formed so as to enable insertion therein of the second locator part 66 that makes up part of the second gear 46 .
  • the second locator groove 88 is formed along the thickness direction of the damper gear 82 .
  • the second narrow tooth 90 is formed in the second locator groove 88 , having a width dimension that extends from one end side directing one end of the damper shaft 50 to the other end side thereof, and which is roughly half the width of the other gear teeth.
  • the second narrow tooth 90 is formed at the same pitch and with the same cross sectional shape as the other gear teeth. More specifically, the second narrow tooth 90 is constituted with a width dimension roughly half that of one gear tooth.
  • the damper gear 82 and the second gear 46 are enmeshed with each other, the second narrow tooth 90 engages within the meshing groove 70 b in the second locator part 66 (see FIG. 8 ).
  • the vehicular air conditioning apparatus 10 to which the driving force transmission mechanism 22 is applied according to the present invention is constructed basically as described above. Next, a situation shall be described by which the driving force transmission mechanism 22 is assembled with respect to the casing 12 , the drive source 20 , and the air mixing damper 18 .
  • the first gear 44 is mounted on the drive shaft 38 of the drive source 20 , and the first mounting section 72 of the gear holder 48 is fixed by the bolts 76 with respect to the housing 36 of the drive source 20 .
  • the first locator part 56 of the second gear 46 is inserted with respect to the first locator groove 54 a of the first gear 44 , and in a state where the first narrow tooth 58 engages within the meshing groove 70 a , the shaft member 60 of the second gear 46 is inserted and fitted into the hole 62 of the gear holder 48 .
  • the driving force transmission unit 92 is assembled onto a side wall of the first divided casing 26 that constitutes the casing 12 .
  • the mounting bracket 40 already is installed through plural bolts 42 on a lower part of the drive source 20 , whereas the air mixing damper 18 and the damper shaft 50 are accommodated in the interior of the casing 12 , and the damper gear 82 of the damper shaft 50 is in a state of projecting from the side surface through the shaft hole 80 .
  • an operator places the second gear 46 in confronting relation with respect to the first divided casing 26 , and while gripping the driving force transmission unit 92 with the mounting bracket 40 oriented downward and the second mounting section 74 on the gear holder 48 oriented upwardly, causes the driving force transmission unit 92 to approach the side surface of the first divided casing 26 .
  • the support shaft 84 of the damper shaft 50 is inserted through the shaft groove 78 of the gear holder 48 , and together therewith, the second gear 46 is made to engage with the damper gear 82 of the damper shaft 50 .
  • assembly is performed such that the second locator part 66 of the second gear 46 is inserted into the second locator groove 88 of the damper gear 82 , and further, the second narrow tooth 90 of the damper gear 82 engages within the meshing groove 70 b of the second locator part 66 .
  • the second gear 46 which is supported by the gear holder 48 , is assembled onto the side surface of the casing 12 in a state whereby the first gear 44 connected to the drive source 20 and the damper gear 82 of the damper shaft 50 that causes rotary movement (turning) of the air mixing damper 18 are mutually enmeshed respectively with each other. More specifically, the first and second gears 44 , 46 and the damper gear 82 are assembled together in a condition of mutual positioning therebetween along the direction of rotation.
  • the driver by operating a non-illustrated operation switch for performing temperature adjustment inside the vehicle compartment, causes a control signal to be output with respect to the drive source 20 through a controller (not shown).
  • the control signal output to the drive source 20 through the non-illustrated controller is switched, and the drive shaft 38 is rotated under a driving action of the drive source 20 .
  • the first gear 44 is rotated in a clockwise direction (the direction of arrow C 1 in FIG. 7 )
  • the second gear 46 is rotated in a counterclockwise direction (the direction of arrow D 1 in FIG. 7 ) and the damper gear 82 is rotated in a clockwise direction (the direction of arrow E 1 in FIG. 7 ).
  • the damper shaft 50 is rotated through a predetermined angle in a counterclockwise direction (the direction of arrow D 1 ), whereupon, due to engagement of the pinion gear 86 and the rack member 32 , the air mixing damper 18 shown in FIG. 2 is moved upwardly a predetermined distance along the guide walls 34 a , 34 b so as to separate from the heater core 16 .
  • the air mixing damper 18 which is fitted to close between the evaporator 14 and the heater core 16 , moves, whereupon a portion of the air that has passed through the evaporator 14 flows through the heater core 16 , which is disposed downstream from the evaporator 14 , and passes to the interior.
  • a portion of the air after being heated by the heater core 16 , is mixed with air that has passed only through the evaporator 14 , whereby the air is adjusted in temperature in the interior of the casing 12 .
  • the temperature-adjusted air after passing through passages inside the casing 12 , is blown out into the vehicle compartment from outlet ports, for example, in the vicinity of the feet of passengers in the vehicle.
  • the drive shaft 38 is rotated in an opposite direction under a driving action of the drive source 20 , and the first gear 44 is rotated together with the drive shaft 38 in a counterclockwise direction (the direction of arrow C 2 in FIG. 7 ).
  • the second gear 46 through engagement with the first gear 44 , is rotated in a clockwise direction (the direction of arrow D 2 in FIG. 7 ), and the damper gear 82 , through engagement with the second gear 46 , is rotated in a counterclockwise direction (the direction of arrow E 2 in FIG. 7 ).
  • the damper shaft 50 is rotated counterclockwise (the direction of arrow E 2 ) by the driving force from the drive source 20 , and the air mixing damper 18 , which is engaged with the pinion gear 86 through the rack member 32 , is moved along the guide walls 34 a , 34 b to the downward side facing the heater core 16 .
  • the first locator groove 54 a is disposed adjacent the first gear teeth 52 on the outer circumferential region of the first gear 44 that constitutes the driving force transmission mechanism 22 , and by insertion of the first locator part 56 formed on the outer circumferential region of the second gear 46 with respect to the first locator groove 54 a , when the first and second gears 44 , 46 are intermeshed, relative positioning thereof in the direction of rotation of the first gear 44 and the second gear 46 can be reliably and effectively carried out.
  • the first and second gears 44 , 46 are enmeshed, the first narrow tooth 58 of the first gear 44 is caused to enmesh with respect to the meshing groove 70 a formed on the first locator part 56 , whereas, when the second gear 46 and the damper gear 82 are enmeshed, the second narrow tooth 90 of the damper gear 82 is caused to enmesh with respect to the meshing groove 70 b of the second locator part 66 .
  • the driving force can reliably be transmitted under an intermeshing action between the first and second narrow teeth 58 , 90 and the meshing grooves 70 a , 70 b.
  • a structure which in combination enables both a positioning function in the relative rotational directions of the first and second gears 44 , 46 and the damper gear 82 , and a driving force transmitting function, which can reliably transmit a driving force from the first gear 44 to the second gear 46 and the damper gear 82 .
  • the driving force transmitting mechanism according to the present invention is not limited to the aforementioned embodiment. It should be understood that various changes and modifications may be made thereto without departing from the scope of the invention as set forth in the appended claims.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Transmission Devices (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Gear Transmission (AREA)
  • Gears, Cams (AREA)
US12/890,162 2009-09-25 2010-09-24 Driving force transmission mechanism Abandoned US20110072925A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/743,372 US9856963B2 (en) 2009-09-25 2015-06-18 Driving force transmission mechanism

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Application Number Priority Date Filing Date Title
JP2009-220733 2009-09-25
JP2009220733A JP5614963B2 (ja) 2009-09-25 2009-09-25 駆動力伝達機構

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US14/743,372 Continuation US9856963B2 (en) 2009-09-25 2015-06-18 Driving force transmission mechanism

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US20110072925A1 true US20110072925A1 (en) 2011-03-31

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US20170120721A1 (en) * 2015-10-28 2017-05-04 Ford Global Technologies, Llc Dual line register
US10625523B2 (en) * 2016-05-27 2020-04-21 Hewlett-Packard Development Company, L.P. Braking system
US20200182490A1 (en) * 2017-09-13 2020-06-11 Gd Midea Air-Conditioning Equipment Co., Ltd. Purification dehumidifier
CN112297763A (zh) * 2019-08-01 2021-02-02 法雷奥日本株式会社 空调装置
US11565574B2 (en) * 2017-08-23 2023-01-31 Denso Corporation Air-conditioning device
DE102014110368B4 (de) 2013-07-23 2023-02-02 Aees, Inc. Energieverteilungsaggregat mit einem System mit mechanischer Übersetzung
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JP2018119644A (ja) 2017-01-27 2018-08-02 アイシン精機株式会社 電動回動装置
JP2020534953A (ja) * 2017-09-29 2020-12-03 ロレアル 駆動シャフトカップリング
CN108953534B (zh) * 2018-07-20 2021-04-02 维沃移动通信有限公司 一种传动组件和电子设备
JP6999521B2 (ja) * 2018-08-10 2022-02-10 株式会社ヴァレオジャパン 駆動ギア機構
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US20120073392A1 (en) * 2010-09-23 2012-03-29 Delaware Capital Formation, Inc. Actuating Device
US9199358B2 (en) * 2010-09-23 2015-12-01 Delaware Capital Formation, Inc. Actuating device
US20130047765A1 (en) * 2011-08-22 2013-02-28 Nidec Sankyo Corporation Geared motor and manufacturing method therefor
US9054562B2 (en) * 2011-08-22 2015-06-09 Nidec Sankyo Corporation Geared motor and manufacturing method therefor
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US20160071378A1 (en) * 2014-08-18 2016-03-10 Ripple Effect Co., Ltd. Informative object
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US11698201B2 (en) * 2017-09-13 2023-07-11 Gd Midea Air-Conditioning Equipment Co., Ltd. Purification dehumidifier
US11623496B2 (en) 2018-03-07 2023-04-11 Hanon Systems Air conditioner for vehicle
CN112297763A (zh) * 2019-08-01 2021-02-02 法雷奥日本株式会社 空调装置

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US9856963B2 (en) 2018-01-02
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JP5614963B2 (ja) 2014-10-29
US20150285361A1 (en) 2015-10-08
JP2011069431A (ja) 2011-04-07
EP2302261A1 (en) 2011-03-30

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