WO2019205972A1 - Pilote de réglage pour siège de voiture - Google Patents

Pilote de réglage pour siège de voiture Download PDF

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Publication number
WO2019205972A1
WO2019205972A1 PCT/CN2019/082658 CN2019082658W WO2019205972A1 WO 2019205972 A1 WO2019205972 A1 WO 2019205972A1 CN 2019082658 W CN2019082658 W CN 2019082658W WO 2019205972 A1 WO2019205972 A1 WO 2019205972A1
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WO
WIPO (PCT)
Prior art keywords
gear
cover
case
adjustment drive
worm
Prior art date
Application number
PCT/CN2019/082658
Other languages
English (en)
Chinese (zh)
Inventor
龚红宇
冯臣
杜旭
赵振雷
Original Assignee
广东肇庆爱龙威机电有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 广东肇庆爱龙威机电有限公司 filed Critical 广东肇庆爱龙威机电有限公司
Publication of WO2019205972A1 publication Critical patent/WO2019205972A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable

Definitions

  • the present application relates to a drive, and more particularly to an adjustment drive for a car seat having high mechanical strength.
  • the transmission of power is typically achieved using two or more stages of transmission.
  • These two-stage or multi-stage transmissions are more commonly geared, and are generally provided with corresponding gearbox assemblies for these transmissions, which typically include a case and a cover, which can typically be used
  • gearbox assemblies for these transmissions, which typically include a case and a cover, which can typically be used
  • Various means known in the art are locked and secured to the housing to effect closure of the housing assembly.
  • housing cover there are various ways of housing cover in the prior art, such as snap fastening, flange fastening, ultrasonic welding, and laser welding.
  • these methods have their own shortcomings: the use of snap fastening is extremely demanding on materials, and the material with insufficient toughness is also prone to buckle breakage; the use of flange fastening has requirements for the length of the flange and is not conducive to rework; Ultrasonic welding is prone to melt-glue and affects the internal structure of the product, which makes it difficult to ensure the assembly size. Laser welding requires high transmittance of the material, and also causes the melt to affect the internal structure of the product and makes it difficult to ensure the assembly size. risk.
  • the housing assembly for use in a car seat adjustment drive requires a smaller overall drive size on the one hand and a reduced overall structural size in the seat frame, and on the other hand considers seat safety and flexibility. It is also necessary to meet the high mechanical strength requirements of the seat system.
  • the box assembly generally uses a pan head screw to fix the case and the cover, however, the cover is used.
  • the circumferential rotation gap is often easily present between the box body and the box cover, and the rotation gap between the box body and the box cover causes the box body and the box cover to be partially separated.
  • the mechanical strength of the entire assembly is greatly reduced, thereby failing to meet the high mechanical strength test requirements of the seat system.
  • the present application is based on such a background and aims to provide an adjustment drive for a car seat such that it can be more easily laid out and matched on a seat frame with limited space on the one hand, and another It also meets the high mechanical strength testing requirements of the seat system.
  • An adjustment drive for a car seat includes a case, a cover and a transmission adapted to the case, the case having a chamber for receiving the transmission, the cover setting There are at least two through holes through which a corresponding number of screws are screwed into the receiving portion in the case, wherein the screw has a head having an inverted cone shape, and the cover passes When the screw is locked to the case, the tapered surface of the head of the screw abuts against the edge of the through hole of the cover.
  • the screw is a countersunk head tapping screw.
  • the case is provided with a positioning protrusion that protrudes axially from the periphery of the case, and the cover is provided at an outer periphery thereof with the positioning protrusion when the cover is assembled on the case. gap.
  • the transmission comprises a primary transmission mechanism and a secondary transmission mechanism, wherein the primary transmission mechanism comprises a worm gear and a worm meshed with each other, and the secondary transmission mechanism comprises a planetary gear transmission gear train, the planetary gear transmission gear train Includes sun gear, ring gear, planet gear and planet carrier.
  • the worm wheel, the sun gear and the planet carrier are rotatably mounted on the same support shaft in the casing, one end of the support shaft is received in a bearing hole in the casing and another One end is received in a central bore of the planet carrier, the inner ring gear being fixedly received in the housing in rotation and at the same level as the sun gear; wherein the worm gear is not diametrically opposed to the sun gear Rotatingly coupled, the planet gear meshes with both the sun gear and the inner ring gear such that power of the adjustment drive is transmitted from the worm and worm gear to the planet carrier via the sun gear and planet wheels And output.
  • an output gear is integrally formed on an output shaft of the carrier, and the output gear protrudes out of the cover through a central opening of the cover to further transmit power to the seat.
  • Other transmission components are integrally formed on an output shaft of the carrier, and the output gear protrudes out of the cover through a central opening of the cover to further transmit power to the seat.
  • the tank is provided with a first chamber for receiving the worm and a second chamber for receiving the worm wheel.
  • the case is provided with a recess recessed axially from the periphery of the case, the ring gear protruding radially outward from the outer periphery thereof, when the inner ring gear is assembled in the case The protrusion that the recess engages.
  • the box cover is provided with a flange portion, and the flange portion is provided with at least two mounting holes through which a corresponding number of assembly bolts extend and extend into the seat frame.
  • the flange portion is provided with at least two mounting holes through which a corresponding number of assembly bolts extend and extend into the seat frame.
  • the adjustment driver for a car seat can meet the high mechanical strength test requirement of the seat system, and the first-stage worm gear transmission mechanism has the advantages of large transmission ratio, good self-locking performance and low running noise, and the second stage.
  • the planetary gear train has the advantages of making the seat adjustment easy to implement by decelerating and twisting.
  • FIG. 1 is an exploded view of an adjustment drive for a car seat in accordance with the present application
  • FIG. 2 is a plan view of an assembled state of an adjustment driver for a car seat according to the present application.
  • Figure 3 is a cross-sectional view taken along line A-A of Figure 2 .
  • Fig. 1 shows an exploded view of an adjustment drive for a car seat according to the present application.
  • the adjustment drive is used in particular for the lifting adjustment of a motor vehicle seat.
  • the adjustment drive 1 for a car seat according to the present application comprises a case 2, a case cover 3 adapted to the case 2 and a transmission received in the case 2, for example as described in the specific embodiment of the present application
  • the two-stage transmission mechanism wherein power is input from the motor 4 via its power output shaft (not specifically shown) to the casing 2 and output via the first and second transmission mechanisms.
  • power is transmitted from the motor 4 to the primary worm gear train and then output through the secondary planetary gear train.
  • the secondary planetary gear train includes the sun gear 7, the inner ring gear 8, the planet gears 9, and the planet carrier 10.
  • other suitable transmissions other than the two-stage transmission described above are also possible depending on the design requirements.
  • the cover 3 is provided with at least two through holes.
  • the cover 3 is provided with three through holes 13 through which a corresponding number of screws 12 pass and are screwed to the case 2.
  • the receiving holes 18 (which may be formed in advance or may be formed during the screwing process of the screw) are used to achieve the locking and fixing of the case 2 and the cover 3.
  • a pan head screw is commonly used to lock the cover and the case.
  • the head of the pan head screw is substantially cylindrical and the bottom surface of the head fits over the upper surface of the lid, thus lacking any circumferential stops that prevent the aforementioned rotational gap. Due to the existence of the above-described turning gap, the case and the cover are partially separated, and high mechanical strength cannot be obtained.
  • the present application proposes the use of a screw 12 whose head is inverted.
  • a countersunk head tapping screw with a reverse tapered head such as an F-type ST4.2 countersunk head tapping screw
  • the head hole type is a T20 hexagonal flower shape
  • the hole depth is 1.1 to 1.3 mm
  • the tooth distance is 1.79 mm.
  • the height of the head of the countersunk head from the periphery of the through hole 13 of the cover 3 is very small, which makes the drive easier to lay out and match on the seat frame.
  • a positioning structure is provided on the lid 3 and the box 2 to facilitate assembly of the box lid 3 with the box 2.
  • two or more (preferably three) positioning projections 17 projecting upward in the axial direction from the periphery of the top of the casing are provided on the casing 2, and the positioning projections 17 and the casing cover are provided.
  • the corresponding indentation 16 of the outer periphery of the outer circumference of the third periphery is aligned so that the positioning projection 17 is axially inserted through the notch 16 when the cover 3 is assembled on the case 2, thus enabling use
  • the relative position between the case 2 and the cover 3 is predetermined and the mounting problem due to the misalignment is prevented.
  • any other suitable means capable of implementing the above described positioning functions are within the scope of the present application.
  • a two-stage transmission mechanism is received in the interior space enclosed by the lid 3 and the box 2.
  • the casing 2 is provided with a first chamber 20 for receiving the worm 5 in a first direction and for receiving in a second direction perpendicular to the first direction (i.e., axial direction A in Figure 1)
  • One end of the worm 5 is coupled to the power take-off shaft of the motor 4.
  • a mounting flange is formed at the inlet of the first chamber 20, and the motor 4 is fixed to the case 2 by screwing a fastening device such as a fastening screw into a fastening hole on the mounting flange.
  • the worm wheel 6, the sun gear 7 and the carrier 10 are rotatably mounted on the same support shaft 23 in the axial direction A from the bottom to the top, wherein the worm wheel 6 and the sun gear 7 are non-rotatably coupled (see 3, preferably, the worm wheel and the sun gear are integrally formed), one end of the support shaft 23 is received in the bearing hole in the casing 2 and the other end is received in the center hole 22 of the carrier 10, the ring gear 8 It is received within the casing 2 and is non-rotatable relative to the casing 2.
  • the ring gear 8 is at the same level as the sun gear 7 above the worm wheel 6, so that the planet gears 9 carried on the planet carrier 10 can simultaneously mesh with the ring gear 8 and the sun gear 7.
  • the power is transmitted and output according to the following route: Referring to Figures 1 and 3, the power is first transmitted from the motor 4 through the power output shaft to the worm 5, and the worm 5 and the worm wheel 6 mesh with the transmission, and the worm wheel 6 and the sun gear 7 rotate synchronously around the same axis.
  • a plurality of planetary gears 9 (for example, three) carried on the carrier 10 are meshed with both the sun gear 7 and the inner ring gear 8, so that power is finally output through the carrier 10.
  • the carrier 10 is integrally formed with an output gear 11 which protrudes through the central opening 19 of the cover 3 to the outside of the cover 3 to further transmit power to the seat.
  • Other transmission components In particular, in the rear seat lift adjustment drive of the vehicle seat, the rotary motion of the output gear is finally converted into a lifting motion via a series of transmission members, thereby achieving an overall lifting of the seat.
  • the adjustment drive for a car seat according to the present application can be obtained by adopting a first-stage worm gear transmission mechanism and a secondary planetary gear transmission train system, in addition to making the transmission space required for the transmission device small and the structure more compact.
  • the effect of the large gear ratio reduces the torque requirements on the motor, thus reducing the size of the motor and reducing the weight of the motor.
  • the adjusted position of the seat can be stably maintained.
  • the worm gear has the advantages of large transmission ratio, good self-locking performance and low running noise, it is especially suitable for the relevant driving device of the car seat; in addition, the planetary gear transmission wheel train can further realize the power transmission process.
  • the deceleration and twisting in the middle makes the seat adjustment operation easier to implement.
  • the inner ring gear 8 is fixed relative to the casing 2 in terms of rotation.
  • FIG. 1 A top view in an assembled state of an adjustment drive for a car seat according to the present application is shown in FIG.
  • the adjustment drive 1 is mounted as an integral part to the seat frame after being assembled as a whole.
  • the box cover 3 is provided with a flange portion 25 which is slightly raised upward from the mounting plane of the screw 12, and the flange portion 25 is provided with a plurality of (preferably three) mounting holes, a corresponding number of mounting bolts 24 passes through the mounting aperture and extends into a corresponding hole in a lateral mounting plate (not shown) of the seat frame and is secured by a mounting nut.
  • the tester applies torque (eg, 200 N ⁇ m) on the power take-off (ie, on the output gear 11) to transmit the torque to the entire tank assembly as opposed to the power transmission path previously described, due to the countersunk head
  • torque eg, 200 N ⁇ m
  • the power take-off ie, on the output gear 11
  • the tapered face of the screw ensures that there is no circumferential rotational clearance between the casing 2 and the tank cover 3, so that the various components of the entire adjustment drive for the car seat lift remain connected together and greatly increase the mechanical strength.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Seats For Vehicles (AREA)

Abstract

L'invention porte sur un pilote de réglage (1) pour un siège de voiture, comprenant un corps de boîte (2), un couvercle de boîte (3) adapté au corps de boîte (2), et un appareil de transmission. Le corps de boîte (2) présente une cavité pour recevoir l'appareil de transmission; le couvercle de boîte (3) est pourvu d'au moins deux trous traversants (13); un nombre correspondant de boulons (12) passent à travers les trous traversants (13) et sont vissés dans des parties de réception (18) dans le corps de boîte (2), les boulons (12) ayant des têtes en forme de cône inversé. Lorsque le couvercle de boîte (3) est fixé au corps de boîte (2) au moyen des boulons (12), les surfaces coniques de tête des boulons (12) viennent en butée contre les bords des trous traversants (13) du couvercle de boîte (3). En utilisant le pilote de réglage, d'une part, l'agencement et la mise en correspondance sur un cadre de siège ayant un espace structurel limité deviennent plus faciles, et d'autre part, les exigences d'un système de siège en matière d'essais de résistance mécanique élevée peuvent également être respectées.
PCT/CN2019/082658 2018-04-26 2019-04-15 Pilote de réglage pour siège de voiture WO2019205972A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201820610397.X 2018-04-26
CN201820610397.XU CN208101771U (zh) 2018-04-26 2018-04-26 用于汽车座椅的调节驱动器

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Publication Number Publication Date
WO2019205972A1 true WO2019205972A1 (fr) 2019-10-31

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Application Number Title Priority Date Filing Date
PCT/CN2019/082658 WO2019205972A1 (fr) 2018-04-26 2019-04-15 Pilote de réglage pour siège de voiture

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CN (1) CN208101771U (fr)
WO (1) WO2019205972A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208101771U (zh) * 2018-04-26 2018-11-16 广东肇庆爱龙威机电有限公司 用于汽车座椅的调节驱动器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202006739U (zh) * 2011-01-06 2011-10-12 上海延锋江森座椅有限公司 汽车座椅电动升降调节装置
CN102582474A (zh) * 2012-01-14 2012-07-18 东莞市凌锐汽车零部件有限公司 汽车座椅增高泵
CN104696389A (zh) * 2015-02-09 2015-06-10 镇江维斯特船用设备有限公司(外商独资) 一种救生艇回转吊架用限速离合器装置
WO2017035334A1 (fr) * 2015-08-25 2017-03-02 Fisher & Company, Incorporated Mécanisme de sortie de réduction d'engrenage mono-étage ayant un engrenage de blocage doté de trous de guidage recevant des tiges et une capacité anti-retour pour actionneurs de dispositifs de réglage de siège automobile
CN107882884A (zh) * 2016-09-30 2018-04-06 北京自动化控制设备研究所 一种有限摆动角组合轴承
CN208101771U (zh) * 2018-04-26 2018-11-16 广东肇庆爱龙威机电有限公司 用于汽车座椅的调节驱动器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202006739U (zh) * 2011-01-06 2011-10-12 上海延锋江森座椅有限公司 汽车座椅电动升降调节装置
CN102582474A (zh) * 2012-01-14 2012-07-18 东莞市凌锐汽车零部件有限公司 汽车座椅增高泵
CN104696389A (zh) * 2015-02-09 2015-06-10 镇江维斯特船用设备有限公司(外商独资) 一种救生艇回转吊架用限速离合器装置
WO2017035334A1 (fr) * 2015-08-25 2017-03-02 Fisher & Company, Incorporated Mécanisme de sortie de réduction d'engrenage mono-étage ayant un engrenage de blocage doté de trous de guidage recevant des tiges et une capacité anti-retour pour actionneurs de dispositifs de réglage de siège automobile
CN107882884A (zh) * 2016-09-30 2018-04-06 北京自动化控制设备研究所 一种有限摆动角组合轴承
CN208101771U (zh) * 2018-04-26 2018-11-16 广东肇庆爱龙威机电有限公司 用于汽车座椅的调节驱动器

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