KR101725411B1 - Electric moving apparatus of seat rail for power seat - Google Patents

Electric moving apparatus of seat rail for power seat Download PDF

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Publication number
KR101725411B1
KR101725411B1 KR1020150179619A KR20150179619A KR101725411B1 KR 101725411 B1 KR101725411 B1 KR 101725411B1 KR 1020150179619 A KR1020150179619 A KR 1020150179619A KR 20150179619 A KR20150179619 A KR 20150179619A KR 101725411 B1 KR101725411 B1 KR 101725411B1
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KR
South Korea
Prior art keywords
lead screw
worm wheel
rail
gear box
seat
Prior art date
Application number
KR1020150179619A
Other languages
Korean (ko)
Inventor
강정남
Original Assignee
현대다이모스(주)
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 현대다이모스(주) filed Critical 현대다이모스(주)
Priority to KR1020150179619A priority Critical patent/KR101725411B1/en
Application granted granted Critical
Publication of KR101725411B1 publication Critical patent/KR101725411B1/en

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Classifications

    • 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
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/0232—
    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • 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
    • F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/039—Gearboxes for accommodating worm gears

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

Abstract

A lead screw (63) corresponding to a mass body is fixed to a fixed rail (51), and an adjusting bolt (80) screwed to a gear housing (74) The worm wheel 71 can be smoothly rotated by the movement of the worm wheel 71 and the guide bush 73 and the adjusting bolt 80. Therefore, the vibration noise of the worm wheel 71, So that the vibration noise of the vehicle can be improved.

Description

ELECTRIC MOVING APPARATUS OF SEAT RAIL FOR POWER SEAT BACKGROUND OF THE INVENTION [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission of a seat rail for a power seat capable of electrically operating a seat rail of a vehicle.

In general, a seat of a vehicle is provided so as to be slidable in a front-rear direction through a seat rail. The seat rail includes a fixed rail 1 fixedly installed on a floor panel of a vehicle interior as shown in Fig. 1, And a movable rail 2 coupled to the fixed rail 1 to move along the longitudinal direction of the fixed rail 1 and connected to the seat cushion.

Here, as a method for conveying the movable rail 2, there is a manual type which is operated by the operation of a tall bar and an electric type which receives the power from the electric motor by simple operation of the button.

1 to 3, the lead screw 3 is disposed inside the movable rail 2 along the longitudinal direction of the movable rail 2, The gear box 4 is coupled to the front end of the screw 3 and the gear box 4 is fixedly coupled to the moving rail 2 and the rear end of the lead screw 3 is connected to the rear stopper 5 The lead nut (6) is coupled to the lead screw (3), and the lead nut (6) is fixed to the fixed rail And the gear box 4 is coupled to the motor shaft 8 of the electric motor 7 so as to transmit power.

The gear box 4 includes a worm wheel 9 coupled to the lead screw 3 so as to be able to transmit power to the lead screw 3 while being installed in a coaxial direction with the lead screw 3, And a worm shaft 10 meshing with the worm wheel 9 in a direction orthogonal to the worm wheel 9.

A rear stopper 11 for restricting the rearward movement of the movable rail 2 is integrally coupled to the lead screw 3 on the rear side of the gear box 4.

In the conventional transmission as described above, the lead screw 3 is connected to the movable rail 2 to move the lead screw 3 together with the movable rail 2, and the lead screw 3 corresponding to the mass body 3), the vibration noise is generated.

The structure of the lead screw 3 along with the movable rail 2 requires a structure of the lead nut 6 for connection with the fixed rail 1, As a result of being separately constructed from the box 4, there are disadvantages such as an increase in the number of parts, an increase in weight, and an increase in cost.

The cumulative tolerance is large due to the combined action of the flow of the gear box 4 and the lead nut 6 corresponding to the mass body. Due to the cumulative tolerance of the gear box 4 and the lead nut 6 There is a disadvantage that the flow of the seat rail is large.

In order to prevent direct contact between the gear box 4 and the lead nut 6, a front stopper 11 is employed. As the front stopper 11 rotates together with the lead screw 3, There is also a disadvantage of further weighting.

The gear box 4 is coupled to the front end of the lead screw 3 for the movement of the lead screw 3 so that the electric motor 7 connected to the gear box 4 is connected to the front end of the seat rail 3 So that the position of the electric motor 7 can not be limited, which is disadvantageous to the package construction.

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

Korean Patent Publication No. 10-2010-0095173

Accordingly, it is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a lead screw which is connected to a fixed rail to prevent movement of a lead screw corresponding to a mass, And the use of the conventional lead nuts can be eliminated, so that the flow of the seat rails can be greatly reduced while reducing the number of parts, weight reduction and cost reduction, and furthermore, positioning of the electric motor can be freely selected, And an object of the present invention is to provide a power transmission device for a seat rail for a power seat.

According to an aspect of the present invention, there is provided a power transmission apparatus for a seat rail for a power seat, comprising: a lead screw disposed along a longitudinal direction of a fixed rail in a fixed rail and having both ends fixed to the fixed rail; An electric motor having a motor shaft; A gear box which is threadedly engaged with the lead screw and is fixedly coupled to the movable rail and moves along the lead screw when the motor shaft is rotated, And a pair of adjustment bolts screwed into the gear box to improve vibration noise of the gear box through adjustment of a gap with a gear mechanism provided in the gear box.

The gear box includes a worm wheel engaged with a lead screw while passing through a center portion by the lead screw, and moving along the lead screw when rotating. A worm shaft coupled to the motor shaft and meshed with the worm wheel in a direction orthogonal to the worm wheel; A pair of guide bushes disposed on both sides of the worm wheel; And a gear housing that covers the worm wheel, the worm shaft, and the guide bush and is coupled to the moving rail; And the adjustment bolt is screwed to the gear housing to improve vibration noise of the worm wheel through adjustment of the gap with the guide bush.

The lead screw is installed to penetrate the adjustment bolt; The inner diameter of the adjustment bolt through which the lead screw penetrates is formed to have an inclined section whose diameter gradually increases from one end to the other end facing the guide bushes so as to absorb axial deformation of the lead screw.

The adjustment bolt is injection molded with plastic to prevent damage to the lead screw and to prevent noise when the lead screw is in contact with the lead screw.

And one end of the adjustment bolt is formed with a tool insertion groove into which a tool is inserted for rotation of the adjustment bolt.

According to the present invention, the lead screw corresponding to the mass body is fixed to the fixed rail, so that even if the movable rail moves, the lead screw does not move, thereby eliminating the vibration noise due to the movement of the lead screw.

Further, since the use of the lead nuts for connection with the fixed rail can be eliminated, the number of parts can be reduced, the weight can be reduced and the cost can be reduced. Further, the cumulative tolerance of the seat rail can be reduced, There is also an effect of greatly reducing the noise.

Further, since the gear box is coupled to the intermediate position in the longitudinal direction of the lead screw, the positioning of the electric motor can be freely selected.

In addition, the present invention provides an appropriate clearance between the adjusting bolt and the guide bushing within a range in which the rotation of the worm wheel is smoothly performed through the movement adjustment of the adjusting bolt screwed into the gear housing, thereby increasing the vibration noise of the worm wheel, There is also an effect that vibration noise of the seat rail can be improved.

1 to 3 are views for explaining a power transmission apparatus of a seat rail for a conventional power seat,
4 is a perspective view of a power transmission apparatus of a seat rail for a power seat according to the present invention,
5 is an exploded perspective view of the seat rail,
6 and 7 are cross-sectional views of a gearbox engagement portion according to the present invention,
8 is an exploded perspective view of a gear box according to the present invention.

Hereinafter, a power transmission apparatus for a power seat seat rail according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

The vehicle seat is provided so as to be slidable in the front-rear direction through a seat rail, and the seat rail is fixed to the floor panel of the passenger compartment and is coupled with the fixed rail to move along the longitudinal direction of the fixed rail And a movable rail installed to be connected to the seat cushion.

One of the methods for conveying the movable rail is an electric type in which power is received from an electric motor when a button is operated, and the electric type is applied to a seat rail for a power seat.

4 to 8, the power train of the seat rail according to the present invention is arranged along the longitudinal direction of the fixed rail within the fixed rail 51, and has both ends connected to the front stopper 61 and the rear stopper 61. [ A lead screw 63 fixedly mounted on the fixed rail 51 via a fixing member 62; An electric motor 65 having a motor shaft 64; And is connected to the motor shaft 64 so as to transmit power so as to move along the lead screw 63 when the motor shaft 64 rotates, A gear box (70); And a pair of adjustment bolts (80) screwed into the gear box (70) to improve the vibration noise of the gear box (70) by adjusting the clearance between the gearbox .

The gear box 70 includes a worm wheel 71 meshed with the lead screw 63 through a center portion thereof by the lead screw 63 and moving along the lead screw 63 when rotated. A worm shaft 72 coupled to the motor shaft 64 and engaged with the worm wheel 71 in a direction orthogonal to the worm wheel 71; A pair of guide bushes 73 disposed on both sides of the worm wheel 71; And a gear housing (74) covering the worm wheel (71), the worm shaft (72), and the guide bush (73) and coupled with the moving rail (52); The adjustment bolt 80 is screwed to the gear housing 74 to improve vibration noise of the worm wheel 71 by adjusting the clearance with the guide bush 73.

The worm wheel 71 and the guide bush 73 may be integrally formed or may be separately formed and then the guide bush 73 may be closely attached to the side surface of the worm wheel 71. In this case, In the invention, a structure in which the worm wheel 71 and the guide bush 73 are integrally formed will be described as an example.

The adjustment bolt 80 is structured so as to be moved toward or away from the guide bush 73 through a screw connection with the gear housing 74, 80 is excessively moved toward the guide bushes 73 and the clearance between the guide bushes 73 and the guide bushes 73 is lost, the movement of the worm wheel 71 becomes difficult and the movable rails 52 can not move smoothly When the adjusting bolt 80 and the guide bush 73 are excessively spaced from each other, the vibration noise of the worm wheel 71 is generated severely. Therefore, according to the present invention, It is possible to improve the vibration noise of the worm wheel 71 by forming a proper clearance between the guide bush 73 and the worm wheel 71 within a range in which the worm wheel 71 is smoothly rotated through the movement of the worm wheel 80, do.

The inner diameter of the adjustment bolt 80 through which the lead screw 63 passes is larger than the inner diameter of the lead screw 63 due to the axial deformation of the lead screw 63 And an inclined end face 81 having a diameter gradually increasing from one end of the guide bush 73 facing the guide bush 73 to the other end thereof so as to absorb the bending.

That is, when the axial deformation (bending) of the lead screw 63 is caused and the lead screw 63 is brought into contact with the adjustment bolt 80, the gear box 70 and the movable rail 52, The present invention is applied to the case where the gap C1 formed by the inclined end face 81 is formed even if axial deformation (warpage) of the lead screw 63 occurs, The deformation tolerance of the lead screw 63 can be absorbed and the smooth movement of the gear box 70 can be induced.

The adjustment bolt 80 is preferably injection molded of plastic to prevent damage and noise of the lead screw 63 when the lead screw 63 contacts the lead screw 63. However, the present invention is not limited thereto.

One end of the adjustment bolt 80 is formed with a tool insertion groove 82 into which a tool is inserted to rotate the adjustment bolt 80 when the screw is engaged with the gear housing 74.

Hereinafter, the operation of the embodiment of the present invention will be described.

When the electric motor 65 is driven and the motor shaft 64 is rotated by the switch operation of the user, the worm shaft 72 engaged with the motor shaft 64 and the worm wheel 71 engaged with the worm shaft 72 When the worm wheel 71 rotates and the lead screw 63 is fixed to the fixed rail 51, the entire gear box 70 including the worm wheel 71 moves along the lead screw 63, The movement of the gear box 70 causes the movable rail 52 coupled with the gear box 70 to move in the longitudinal direction of the vehicle with respect to the fixed rail 51. [

As described above, according to the embodiment of the present invention, the lead screw 63 corresponding to the mass body is fixed to the fixed rail 51 so that the lead screw 63 does not move even if the movable rail 52 moves. , There is an advantage that vibration noise due to the movement of the lead screw can be eliminated as in the prior art.

The lead screw 63 is fixed to the fixed rail 51. The lead screw 63 does not need to have a configuration of a lead nut for connection with the fixed rail as in the prior art. There is also an advantage that it can plan.

In addition, since the use of the lead nuts can be eliminated in the mass body, the cumulative tolerance of the seat rails can be greatly reduced, thereby reducing the flow noise of the seat rails.

Further, the present invention has a structure in which there is no front stopper that rotates together with the lead screw 61 as in the prior art, and the vibration of the seat rail can be further reduced through the front stopper.

In addition, the present invention has a structure in which the gear box 70 is coupled to the intermediate position of the lead screw 63 in the longitudinal direction, so that the gear box is not disposed at the front end of the seat rail, ) Can be freely positioned, which is advantageous for package construction.

The present invention is also applicable to a case in which the adjustment bolt 80 screwed with the gear housing 74 is moved and adjusted between the adjustment bolt 80 and the guide bush 73 So that vibration noise of the worm wheel 71 and further vibration noise of the seat rail can be improved.

The present invention can also absorb the axial deformation (warpage) of the lead screw 63 through the inclined end face 81 formed on the inner diameter of the adjustment bolt 80 so that the gear box 70 including the lead screw 63 ) Can be improved in terms of durability.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

51 - fixed rail 52 - movable rail
63 - Lead Screw 64 - Motor Shaft
65 - Electric motor 70 - Gearbox
71 - Worm wheel 72 - Worm shaft
73 - guide bush 74 - gear housing
80 - Adjusting bolt

Claims (5)

A lead screw disposed inside the stationary rail along the longitudinal direction of the stationary rail and having both ends fixed to the stationary rail;
An electric motor having a motor shaft;
A gear box which is threadedly engaged with the lead screw and is fixedly coupled to the movable rail and moves along the lead screw when the motor shaft is rotated, And
And a pair of adjustment bolts screwed into the gear box to improve vibration noise of the gear box through adjustment of a gap with a gear mechanism provided in the gear box;
The gear box includes a worm wheel engaged with a lead screw while passing through a center portion by the lead screw, and moving along the lead screw when rotating.
A worm shaft coupled to the motor shaft and meshed with the worm wheel in a direction orthogonal to the worm wheel;
A pair of guide bushes disposed on both sides of the worm wheel; And
A worm wheel, a worm shaft, and a guide bush; and a gear housing coupled to the moving rail;
The adjusting bolt is screwed into the gear housing to improve vibration noise of the worm wheel through the adjustment of the gap with the guide bush;
The lead screw is installed to penetrate the adjustment bolt;
Wherein an inner diameter of the adjustment bolt through which the lead screw penetrates is formed to have an inclined section whose diameter gradually increases from one end of the adjustment bolt facing the guide bush to the other end so as to absorb the axial deformation of the lead screw, The transmission of the rail. delete delete The method according to claim 1,
Wherein the adjusting bolt is injection-molded by plastic to prevent damage to the lead screw and to prevent noise when the lead screw is in contact with the lead screw. The method according to claim 1,
Wherein the adjustment bolt has a tool insertion groove formed at one end thereof for inserting a tool for rotation of the adjustment bolt.
KR1020150179619A 2015-12-15 2015-12-15 Electric moving apparatus of seat rail for power seat KR101725411B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150179619A KR101725411B1 (en) 2015-12-15 2015-12-15 Electric moving apparatus of seat rail for power seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150179619A KR101725411B1 (en) 2015-12-15 2015-12-15 Electric moving apparatus of seat rail for power seat

Publications (1)

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KR101725411B1 true KR101725411B1 (en) 2017-04-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023133026A1 (en) 2022-11-28 2024-05-29 Hyundai Transys Inc. Device for operating a seat

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100095173A (en) 2009-02-20 2010-08-30 주식회사다스 Rear stopper device of moving rail for electromotive seat
KR20120006204A (en) * 2010-07-12 2012-01-18 (주)케이엠앤아이 Gearbox of power seat track for motor vehicle and assembly method of the same
KR101221269B1 (en) * 2011-07-22 2013-01-11 계양전기 주식회사 Seat slide adjusting apparatus
KR101576382B1 (en) * 2014-07-25 2015-12-11 현대다이모스(주) Gear box

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100095173A (en) 2009-02-20 2010-08-30 주식회사다스 Rear stopper device of moving rail for electromotive seat
KR20120006204A (en) * 2010-07-12 2012-01-18 (주)케이엠앤아이 Gearbox of power seat track for motor vehicle and assembly method of the same
KR101221269B1 (en) * 2011-07-22 2013-01-11 계양전기 주식회사 Seat slide adjusting apparatus
KR101576382B1 (en) * 2014-07-25 2015-12-11 현대다이모스(주) Gear box

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023133026A1 (en) 2022-11-28 2024-05-29 Hyundai Transys Inc. Device for operating a seat
KR20240079007A (en) 2022-11-28 2024-06-04 현대트랜시스 주식회사 Operating apparatus for seat
DE102023133026B4 (en) 2022-11-28 2024-11-07 Hyundai Transys Inc. device for operating a seat

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