WO2007111414A1 - Pumping device and height adjuster for vehicle seat - Google Patents
Pumping device and height adjuster for vehicle seat Download PDFInfo
- Publication number
- WO2007111414A1 WO2007111414A1 PCT/KR2007/000582 KR2007000582W WO2007111414A1 WO 2007111414 A1 WO2007111414 A1 WO 2007111414A1 KR 2007000582 W KR2007000582 W KR 2007000582W WO 2007111414 A1 WO2007111414 A1 WO 2007111414A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cam
- plate
- pumping device
- lever
- control plate
- Prior art date
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 50
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 38
- 238000000638 solvent extraction Methods 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 10
- 230000007935 neutral effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
- B60N2/04—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
- B60N2/1635—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 characterised by the drive mechanism
- B60N2/167—Ratchet mechanism
-
- 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
- B60N2/168—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 and provided with braking systems
Definitions
- the present invention relates to a pumping device and a height adjuster for a vehicle seat having the same, and more particularly, to a pumping device which adopts a lever operation structure using a bidirectional clutch so as to improve the efficiency of use of space and ensure operational convenience, and a height adjuster for a vehicle seat having the same.
- a pumping device is a mechanism which is used in a vehicle seat or the like to rotate, lock and unlock a shaft so that the rotation amount of the shaft can be adjusted and maintained.
- Such a pumping device can be applied to the input side of a height adjuster for a vehicle seat, as disclosed in Korean Patent No. 457,396, entitled “Seat Height Adjuster Apparatus for Vehicle” or U.S. Patent No. 6,032,777 entitled “Locking Device, in Particular For a Motor Vehicle Seat”, or can be applied to a recliner for rotating a seatback, as disclosed in U.S. Patent No. 6,616,241 entitled "Rotation Limiting Device and Seat Recliner Device Using the Same”.
- the present invention has been made in an effort to solve the problems occurring in the related art, and an object of the present invention is to provide a pumping device which requires minimal operation space and can be easily operated with reduced force, and to a height adjuster for a vehicle seat having the same.
- a pumping device for controlling the rotation and locking of a shaft, comprising a support plate having a hole through which the shaft passes; a ring-shaped cam receiver accommodated in the support plate to be supported; a brake cam received in the cam receiver to be integrally rotated with the shaft, and defining a plurality of receiving spaces between the brake cam and the inner circumferential surface of the cam receiver at regular intervals in a circumferential direction; locking means received in each receiving space to allow and prevent rotation of the brake cam in the cam receiver depending upon whether or not pushing force is applied to the locking means in the circumferential direction; a control plate for applying the pushing force to the locking means in the circumferential direction through rotation thereof; a bidirectional clutch held in a state of being coupled to the control plate if clockwise or counterclockwise rotating force is applied thereto, and returned to a state of being decoupled from the control plate if the rotating force is not applied thereto; a cover plate assembled
- the bidirectional clutch includes a clutch cam which rotates about the shaft upon application of the rotating force from the lever plate, a locking gear slid by the rotating clutch cam from a decoupled position, in which the locking gear is decoupled from the control plate, to a coupled position, in which the locking gear is coupled to the control plate, and elastic pressing means for pressing the locking gear toward the decoupled position; and the control plate is formed with teeth to be coupled with the locking gear.
- the locking gear is provided in a plural number to be selectively slid depending upon the rotating direction of the clutch cam.
- the bidirectional clutch further includes a guide plate which has a guiding part for guiding the sliding movement of the locking gear and a supporting part for supporting the elastic pressing means.
- the clutch cam further includes a rotation column which projects from the clutch cam and has one end coupled to the lever plate to receive the rotating force from the lever plate; and the guide plate has a guide slot through which the rotation column passes so that the rotation angle thereof is limited in a rotation angle thereof.
- the clutch cam further includes a rotation column which projects from the clutch cam and has one end coupled to the lever plate to receive the rotating force from the lever plate; and the cover plate has a plurality of stoppers formed thereon which limit the rotation angle of the rotation column so as to prevent the lever plate from being rotated beyond a pred etermined angle from the reference position in each rotating direction thereof.
- the brake cam has linear surface parts which define the receiving spaces in cooperation with the inner circumferential surface of the cam receiver, and partitioning parts which are brought into contact with the inner circumferential surface of the cam receiver to partition the receiving spaces from one another;
- the locking means includes a plurality of rollers received in each space, and elastic means interposed between the rollers to press the rollers toward both ends of the receiving space;
- the control plate has control projections which are interposed between the rollers of the locking means and the partition parts of the brake cam so as to push the rollers toward center portions of the receiving spaces if the control plate is rotated.
- a pumping device for controlling rotation and locking of a shaft, comprising a support plate having a hole for passage of the shaft and a ring-shaped cam receiving part formed around the hole; a brake cam received in the cam receiving part of the support plate to be integrally rotated with the shaft, and having a plurality of receiving spaces between the brake cam and the inner circumferential surface of the cam receiving part at regular intervals in a circumferential direction; locking means received in each receiving space to allow and prevent rotation of the brake cam in the cam receiving part depending upon whether or not pushing force is applied to the locking means in the circumferential direction; a control plate for applying the pushing force to the locking means in the circumferential direction through rotation thereof; a bidirectional clutch held in a state of being coupled to the control plate if clockwise or counterclockwise rotating force is applied thereto, and returned to a state of being decoupled from the control plate if the rotating force is not applied thereto; a hinge lever having a hole for passage of the
- the bidirectional clutch includes a locking gear that slides between a coupled position, in which the locking gear is coupled to the control plate, and a decoupled position, in which the locking gear is decoupled from the control plate, depending upon whether or not the rotating force is applied from the hinge lever to the locking gear, and a guide plate rotatably coupled to the shaft to guide the sliding movement of the locking gear; and the control plate is formed with teeth to be coupled with the locking gear.
- the locking gear has a plurality of teeth parts to be selectively coupled to the control plate depending upon the direction in which the rotating force is applied by the hinge lever.
- the locking gear has a sliding projection
- the guide plate has a guide slot through which the sliding projection passes so that the sliding range of the sliding projection can be limited by the guide slot
- the hinge lever has a projection guide part which controls the position of the sliding projection in the guide slot when the hinge lever is rotated.
- the cover plate has an opening for allowing the hinge lever to be directly rotated from the outside.
- the brake cam has linear surface parts which form the receiving spaces in cooperation with the inner circumferential surface of the cam receiving part, and partitioning parts which are brought into contact with the inner circumferential surface of the cam receiving part to partition the receiving spaces from one another;
- the locking means has a plurality of rollers received in each receiving space, and elastic means interposed between the rollers to press the rollers toward both ends of the receiving space;
- the control plate has control projections which are interposed between the rollers of the locking means and the partition parts of the brake cam so as to push the rollers toward center portions of the receiving spaces when the control plate is rotated.
- the pumping device further comprises a ring-shaped cam receiver which is accommodated in the cam receiving part of the support plate; and the brake cam is received in the cam receiver and has a plurality of receiving spaces between the brake cam and the inner circumferential surface of the cam receiver.
- the present invention provides a height adjuster for a vehicle seat comprising the pumping device as described above.
- the pumping device and the height adjuster for a vehicle seat having the same provide advantages in that, since the conventional knob-operated structure is changed to a lever-operated structure, when mounting the pumping device to the vehicle seat, the space that is defined for operation of the pumping device can be minimized, and the pumping device can be easily manipulated with reduced force. Also, increased braking force can be obtained due to the presence of locking means and a brake cam.
- FIG. 1 is an assembled perspective view illustrating a pumping device in accordance with a first embodiment of the present invention
- FIG. 2 is an exploded perspective view of the pumping device shown in FIG. 1 ;
- FIG. 3 is a plan view illustrating the state in which locking means, a brake cam and a cam receiver of FIG. 2 are assembled with one another;
- FIGs. 4 and 5 are plan views explaining the assembly and operation of a bidirectional clutch shown in FIG. 2;
- FIG. 6 is an assembled perspective view illustrating a pumping device in accordance with a second embodiment of the present invention.
- FIG. 7 is an exploded perspective view of the pumping device shown in FIG. 6;
- FIGs. 8 through 10 are plan views explaining the assembly and operation of the hinge lever and the bidirectional clutch shown in FIG. 6. Best Mode for Carrying Out the Invention
- a support plate 10 which is joined to a seat frame (not shown), and a cover plate 70 are locked to each other by bolts 3.
- a cam receiver 20, a brake cam 30, locking means 40, a control plate 50, a bidirectional clutch 60, and a thin plate spring 80 are sequentially received in the space defined between the support plate 10 and the cover plate 70, and a shaft 2 passes through these component elements.
- a lever plate 90, which has a lever (not shown) locked thereto or integrally extending therefrom, and a return spring 100 are positioned outside the cover plate 70.
- the support plate 10 is defined with a hole 11 through which the shaft 2 passes, and is formed with an accommodating part 12 which accommodates and supports the cam receiver 20.
- the cam receiver 20 is formed in the shape of a ring which has a predetermined thickness. In order to prevent the cam receiver 20 from being rotated when it is accommodated in the accommodating part 12 of the support plate 10, a plurality of protuberances 21 is formed on the circumferential outer surface of the cam receiver 20 to be inserted into the grooves 13 defined in the support plate 10. Also, the cam receiver 20 has an inner circumferential surface 22 able to rotatably receive the brake cam 30. [35] The brake cam 30 is received in the cam receiver 20, and is defined with a shaft coupling hole 31, in which the shaft 2 is coupled, so that the brake cam 30 can be integrally rotated with the shaft 2.
- a plurality of partitioning parts 32 projects from the outer surface of the brake cam 30 to be spaced apart from one another at regular intervals in the circumferential direction.
- the partitioning parts 32 are brought into contact with the inner circumferential surface 22 of the cam receiver 20 to support the brake cam 30 so that the brake cam 30 can execute sliding rotation with respect to the cam receiver 20.
- the brake cam 30 has linear surface parts 33 between the partitioning parts 32, so that receiving spaces 'S' (see FIG. 3) are defined between the linear surface parts 33 of the brake cam 30 and the inner circumferential surface 22 of the cam receiver 20. Due to this fact, the radial width of each receiving space 'S' gradually increases toward the center portion of the receiving space 'S' and gradually decreases toward both ends of the receiving space 'S'.
- the partitioning parts 32 serve as partition walls between two adjoining receiving spaces 'S'.
- the plurality of receiving spaces 'S' are defined between the inner circumferential surface 22 of the cam receiver 20 and the linear surface parts 33 of the brake cam 30 to be spaced apart at regular intervals from one another in the circumferential direction.
- each locking means 40 are respectively received in the receiving spaces 'S' defined between the cam receiver 20 and the brake cam 30 to unlock and lock the brake cam 30 from and to the cam receiver 20 depending upon whether or not pushing force is applied to the locking means 40 in the circumferential direction.
- each locking means 40 comprises a pair of rollers 41 and 42 which is received in each receiving space 'S' and a spring 43 which is interposed between the rollers 41 and 42.
- the rollers 41 and 42 are pressed by the spring 43 toward both ends of the receiving space 'S' and are simultaneously brought into tight contact with the inner circumferential surface 22 of the cam receiver 20 and the linear surface parts 33 of the brake cam 30.
- the brake cam 30, which is received in the cam receiver 20, is prevented from being rotated clockwise by the first rollers 41 positioned at first ends of the respective receiving spaces 'S' and from being rotated counterclockwise by the second rollers 42 positioned at second ends of the respective receiving spaces 'S'. Therefore, when external force is not applied to the rollers 41 or 42 in the circumferential direction, the brake cam 30 is held in a locked state.
- rollers 41 and 42 can be replaced with balls
- the spring 43 may comprise a coil spring or other elastic means, such as a V-shaped spring, an elastic member made of rubber, and the like.
- the control plate 50 functions to apply and remove pushing force to and from the locking means 40 in the circumferential direction through rotation thereof, and to thereby control the operation of the locking means 40.
- control projections 51 and 52 are formed on one surface of the control plate 50 and are inserted into both ends of the respective receiving spaces 'S'.
- a pair of control projections 51 and 52 is provided in each receiving space 'S' such that the pair of control projections 51 and 52 is brought into contact with and supports the pair of rollers 41 and 42, which are pressed by the spring 43.
- a rim part 53 having a predetermined thickness is formed on the periphery of the other surface of the control plate 50 which faces away from the one surface having the control projections 51 and 52 formed thereon.
- a plurality of teeth 54 is formed on the inner circumferential surface of the rim part 53.
- a clutch cam 61 and locking gears 62 and 63 which will be described later in detail, are accommodated in the rim part 53.
- a hole 55 is defined through the center portion of the control plate 50 such that the shaft 2 can pass through the hole 55.
- the bidirectional clutch 60 includes the clutch cam 61, the locking gears 62 and 63, a spring 64, and a guide plate 65.
- the clutch cam 61 is defined with a hole 611 (see FIG. 4), through which the shaft 2 passes, and can rotate about the shaft 2 clockwise and counterclockwise.
- the locking gears 62 and 63 are arranged to be spaced apart from each other by a predetermined angle in the rotating direction of the clutch cam 61, and are selectively pushed through rotation of the clutch cam 61 to execute sliding movement.
- the spring 64 serves as elastic pressing means for returning the locking gears 62 and 63 to their original positions. In other words, the spring 64 functions to return either one of the locking gears 62 or 63 to its original position when the force of the clutch cam 61 for pushing the locking gear 62 or 63 is removed.
- a hole 651 is defined through the center portion of the guide plate 65 such that the shaft 2 can pass through the hole 651.
- guiding parts 652 for guiding the sliding movement of the locking gears 62 and 63 and supporting parts 653 for supporting the spring 64 are formed on the guide plate 65 (see FIG. 4) so as to project.
- the clutch cam 61 has a rotation column 612 at a position which is eccentric from the hole 611 through which the shaft 2 passes, and the guide plate 65 has defined therein a guide slot 654 through which the rotation column 612 passes so as to be limited in the rotation angle thereof.
- the guide slot 654 can perform, independently or along with stoppers 73 and 74, which will be described later, the function of limiting the rotation range of the clutch cam 61.
- the rotation column 612 is fitted into a hole 92 defined in the lever plate 90 after passing through the guide slot 654 to be firmly connected to the lever plate 90. Accordingly, the clutch cam 61 can be rotated in both rotating directions through rotation of the lever plate 90.
- FIGs. 4 and 5 are plan views illustrating the assembled state of the bidirectional clutch 60 and the control plate 50, which are configured as described above.
- the locking gears 62 and 63 are guided by the guiding parts 652 such that they can slide between a decoupled position (see FIG. 4), in which they are decoupled from the teeth 54 of the rim part 53, and a coupled position (see FIG. 5), in which either one of them is coupled to the teeth 54 of the rim part 53.
- FIG. 4 illustrates a state in which rotating force is not applied to the clutch cam 61.
- FIG. 5 illustrates the state in which rotating force is applied to the clutch cam 61.
- the clutch cam 61 is rotated about the shaft 2 such that the locking gear 62 placed adjacent to one end of the clutch cam 61 can be slidingly pushed to the coupled position, in which it is coupled to the teeth 54 of the control plate 50.
- the cover plate 70 is defined with a plurality of locking holes
- the thin plate spring 80 can be disposed inside the cover plate 70 to supplement force for supporting the component elements.
- the lever plate 90 is placed outside the cover plate 70, and is defined with a hole 91 through which the shaft 2, projecting through the opening 72 defined in the cover plate 70, passes.
- the lever plate 90 has the hole 92 into which the rotation column 612 of the clutch cam 61, also projecting through the opening 72 of the cover plate 70, is fitted to be firmly connected to the lever plate 90. Therefore, the lever plate 90 can rotate about the shaft 2.
- the rotation column 612 which is fitted into the hole 92, is also rotated to operate the clutch cam 61.
- a projection 93 is formed on one side of the lever plate 90, and the return spring
- the lever plate 90 which serves as elastic returning means for elastically returning the rotated lever plate 90, is arranged between the lever plate 90 and the cover plate 70.
- the projection 93 and the projection 75, formed on the cover plate 70, are fitted between both ends of the return spring 100.
- the stoppers 73 and 74 are formed on the cover plate 70 to limit the rotation angle of the rotation column 612, which is integrally rotated with the lever plate 90.
- a lever (not shown) can be locked to the lever plate 90 through locking holes 94 defined through the lever plate 90, or a portion of the lever plate 90 can be extended to form an integral lever.
- a support plate 110 which is joined to a seat frame (not shown), and a cover plate 170 are locked to each other by bolts which are inserted through bolt locking holes 111.
- a brake cam 120, locking means 130, a control plate 140, a bidirectional clutch 150, a hinge lever 160, and a wave washer 180 are sequentially received in the space defined between the support plate 110 and the cover plate 170, and a shaft 4 passes through these component elements.
- the support plate 110 is defined with a hole 112 through which the shaft 4 passes, and delimits a cam receiving part 113 for receiving the brake cam 120.
- the cam receiving part 113 has a ring-shaped space
- the support plate 110 has an inner circumferential surface 114 which faces the cam receiving part 113 and has a predetermined width.
- the brake cam 120 is received in the cam receiving part 113 of the support plate
- a plurality of partitioning parts 122 projects from the outer surface of the brake cam 120 to be spaced apart from one another at regular intervals in the circumferential direction.
- the partitioning parts 122 are brought into contact with the inner circumferential surface 114 of the support plate 110 to support the brake cam 120 so that the brake cam 120 can execute sliding rotation with respect to the support plate 110.
- the brake cam 120 has linear surface parts 123 between the partitioning parts 122 so that, similar to the first embodiment (see the receiving spaces 'S' of FIG.
- receiving spaces are defined between the linear surface parts 123 of the brake cam 120 and the inner circumferential surface 114 of the support plate 110. Due to this fact, similar to the first embodiment, the radial width of each receiving space gradually increases toward the center portion of the receiving space, and gradually decreases toward both ends of the receiving space.
- the partitioning parts 122 serve as partition walls between two adjoining receiving spaces.
- the plurality of receiving spaces are defined between the inner circumferential surface 114 of the support plate 110 and the linear surface parts 123 of the brake cam 120 to be spaced apart at regular intervals from one another in the circumferential direction.
- each locking means 130 are received in respective receiving spaces defined between the support plate 110 and the brake cam 120 to unlock and lock the brake cam 120 from and to the support plate 110 depending upon whether or not pushing force is applied to the locking means 130 in the circumferential direction.
- each locking means 130 comprises a pair of rollers 131 and 132 which is received in each receiving space and a spring 133 which is interposed between the rollers 131 and 132.
- the pumping device 3 does not include the cam receiver (see 20 in FIG. 2), and therefore, the brake cam 120 is directly locked to and unlocked from the support plate 110 through the locking means 130.
- the cam receiver (see 20 in FIG. 2) may be accommodated in the cam receiving part 113 of the support plate 110, and the brake cam 120 may be received in the cam receiver to define the receiving spaces between the brake cam 120 and the inner circumferential surface of the cam receiver.
- the control plate 140 functions to apply and remove pushing force to and from the locking means 130 in the circumferential direction through rotation thereof and to thereby control the operation of the locking means 130.
- control plate 140 Because the structure and the operation pattern of the control plate 140 are the same as those of the first embodiment, the detailed description thereof will be omitted herein.
- the bidirectional clutch 150 includes a locking gear 151 and a guide plate 152.
- the locking gear 151 is formed with teeth 153 on opposite surfaces thereof so that the locking gear 151 can be meshed with the teeth 142 which are formed on the inner circumferential surface of the rim part 141 of the control plate 140.
- a plurality of guide projections 155 is projectedly formed on the guide plate 152 to guide the locking gear 151 in a manner such that the locking gear 151 can slide along predetermined paths defined by the guide projections 155.
- the locking gear 151 is formed with a sliding projection 154 which projects toward the guide plate 152.
- the guide plate 152 is defined with a guide slot 156 through which the sliding projection 154 is inserted.
- the guide slot 156 functions to limit the range in which the locking gear 151 slides on the guide plate 152.
- a hole 157 is defined through the center portion of the guide plate 152 such that the shaft 4 can pass through the hole 157.
- the hinge lever 160 is provided to the left side of the bidirectional clutch 150.
- a hole 162 is defined through the center portion of the hinge lever 160 such that the shaft 4 can pass through the hole 162.
- the hinge lever 160 can rotate about the shaft 4 in both directions, that is, clockwise and counterclockwise.
- a projection guide part 163 is formed at the lower end of the hinge lever 160 such that the sliding projection 154 projecting through the guide slot 156 is inserted through the projection guide part 163 to be guided therealong.
- the projection guide part 163 is defined with a slot which extends in a radial direction (in the drawing, the lower end of the slot is opened), when the hinge lever 160 is rotated, the sliding projection 154 is prevented from moving in the circumferential direction and is allowed to move in the radial direction. That is to say, the sliding projection 154 of the locking gear 151, which slidingly moves in the leftward and rightward directions, can radially slide in the projection guide part 163.
- engagement arms 164, 158 and 115 are respectively formed at the upper ends of the hinge lever 160, the guide plate 152 and the support plate 110 such that they are bent and overlap with one another when the hinge lever 160, the guide plate 152 and the support plate 110 are assembled with one another.
- the engagement arms are respectively formed at the upper ends of the hinge lever 160, the guide plate 152 and the support plate 110 such that they are bent and overlap with one another when the hinge lever 160, the guide plate 152 and the support plate 110 are assembled with one another.
- the 164, 158 and 115 are positioned between both ends 191 and 192 of a return spring 190 which is placed at the right side of the support plate 110.
- the elastic force of the return spring 190 is applied between the engagement arm 164 of the hinge lever 160 and the engagement arm 115 of the support plate 110.
- the engagement arm 158 of the guide plate 152 is rotated along with the engagement arm 164 of the hinge lever 160.
- FIGs. 8 through 10 are plan views explaining the operation of the control plate 140, the bidirectional clutch 150 and the hinge lever 160.
- the locking gear 151 is moved by the rotation of the hinge lever 160. While being guided by the guide projections 155, the locking gear 151 can slide between a decoupled position (see FIG. 8), in which it is decoupled from the teeth 142 of the rim part 141 of the control plate 140, and a coupled position (see FIG. 9), in which it is coupled to the teeth 142 of the rim part 141 of the control plate 140.
- FIG. 8 illustrates the state in which rotating force is not applied to the hinge lever
- the hinge lever 160 In this state, the hinge lever 160 is held at a neutral position, in which equal pressing force is applied to the engagement arm 164 of the hinge lever 160 from both ends 191 and 192 of the return spring 190. Due to this fact, the locking gear 151 is held in the decoupled position, in which it is decoupled from the teeth 142 of the rim part 141 of the control plate 140.
- FIG. 9 illustrates the state in which rotating force is applied to the hinge lever 160.
- the projection guide part 163 applies pushing force to one side of the sliding projection 154 in one direction (rightward in the drawing). According to this, the locking gear 151 slides rightward on the guide plate 152 while being guided by the guide projections 155 to the coupled position, in which it is coupled to the teeth 142 of the rim part 141 of the control plate 140.
- hinge lever 160 can be rotated clockwise according to the same principle.
- the bidirectional clutch 150 is held at the coupled position, in which it is coupled to the control plate 140, when rotation force is input thereto through the hinge lever 160 in one direction or the other, and returns to the decoupled position, in which it is decoupled from the control plate 140, when rotation force applied to the hinge lever 160 is removed.
- the cover plate 170 is defined with a plurality of locking holes
- the wave washer 180 can be disposed inside the cover plate 170 to supplement the force for supporting the component elements.
- the cover plate 170 is defined with a pair of openings 171 such that both lockers
- the hinge lever 160 can be exposed to the outside through the openings 171.
- the lockers 161 are locked to the external lever (not shown) so that rotating force can be input to the hinge lever 160 from the external lever through the lockers 161.
- stoppers 173 and 174 are formed on the cover plate 170.
- the pumping device 1 or 3 in accordance with the first or second embodiment of the present invention, depending upon the device connected to the shaft 2 or 4, as mentioned in the introductory part of the present specification, the height of a seat or the rotation amount of a seat back can be adjusted.
- the pumping device 1 or 3 can be applied to Korean Patent Application No. 2005-0021020, filed on March 14, 2005 in the name of the present applicant, and entitled "Height Adjuster for Vehicle Seat.”
- the second embodiment of the present invention has a decreased number of parts compared to the first embodiment, it can contribute to the improvement of productivity, the increase in the precision of a product, and the reduction in weight of the product. Therefore, it is deemed that the second embodiment achieves improvements over the first embodiment.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN2007800187533A CN101448676B (en) | 2006-03-24 | 2007-02-02 | Pumping device and height adjuster for vehicle seat |
US12/300,453 US8109373B2 (en) | 2006-03-24 | 2007-02-02 | Pumping device and height adjuster for vehicle seat |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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KR10-2006-0026767 | 2006-03-24 | ||
KR1020060026767 | 2006-03-24 | ||
KR10-2006-0115835 | 2006-11-22 | ||
KR1020060115835A KR100840486B1 (en) | 2006-03-24 | 2006-11-22 | Pumping device and height adjuster for vehicle seat |
Publications (1)
Publication Number | Publication Date |
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WO2007111414A1 true WO2007111414A1 (en) | 2007-10-04 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2007/000582 WO2007111414A1 (en) | 2006-03-24 | 2007-02-02 | Pumping device and height adjuster for vehicle seat |
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WO (1) | WO2007111414A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9821685B2 (en) | 2012-11-29 | 2017-11-21 | Das Co., Ltd. | Pumping device for vehicle seat |
DE102020207205B4 (en) | 2019-06-19 | 2023-03-09 | Hyundai Transys Inc. | SEAT PUMP DEVICE FOR VEHICLES |
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JPH10234507A (en) * | 1997-02-25 | 1998-09-08 | Nhk Spring Co Ltd | Reclining regulating device for seat back |
US6616241B1 (en) * | 1999-11-16 | 2003-09-09 | Nhk Spring Co., Ltd. | Rotation limiting device and seat recliner device using the same |
US20050006193A1 (en) * | 2003-07-12 | 2005-01-13 | St. Onge Steward Johnston & Reens Llc. | Seat cushion pumping device for vehicle |
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2007
- 2007-02-02 WO PCT/KR2007/000582 patent/WO2007111414A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10234507A (en) * | 1997-02-25 | 1998-09-08 | Nhk Spring Co Ltd | Reclining regulating device for seat back |
US6616241B1 (en) * | 1999-11-16 | 2003-09-09 | Nhk Spring Co., Ltd. | Rotation limiting device and seat recliner device using the same |
US20050006193A1 (en) * | 2003-07-12 | 2005-01-13 | St. Onge Steward Johnston & Reens Llc. | Seat cushion pumping device for vehicle |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9821685B2 (en) | 2012-11-29 | 2017-11-21 | Das Co., Ltd. | Pumping device for vehicle seat |
DE112013005701B4 (en) | 2012-11-29 | 2023-01-12 | Das Co., Ltd | Pumping device for a vehicle seat |
DE102020207205B4 (en) | 2019-06-19 | 2023-03-09 | Hyundai Transys Inc. | SEAT PUMP DEVICE FOR VEHICLES |
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