WO2024043499A1 - Dispositif de réglage de la position avant-arrière d'un appuie-tête d'automobile - Google Patents

Dispositif de réglage de la position avant-arrière d'un appuie-tête d'automobile Download PDF

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Publication number
WO2024043499A1
WO2024043499A1 PCT/KR2023/009277 KR2023009277W WO2024043499A1 WO 2024043499 A1 WO2024043499 A1 WO 2024043499A1 KR 2023009277 W KR2023009277 W KR 2023009277W WO 2024043499 A1 WO2024043499 A1 WO 2024043499A1
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WO
WIPO (PCT)
Prior art keywords
headrest
base member
pawl
release
release plate
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PCT/KR2023/009277
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English (en)
Korean (ko)
Inventor
남궁준
백성진
Original Assignee
주식회사 서연씨엔에프
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Application filed by 주식회사 서연씨엔에프 filed Critical 주식회사 서연씨엔에프
Publication of WO2024043499A1 publication Critical patent/WO2024043499A1/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
    • 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
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/865—Head-rests movable or adjustable providing a fore-and-aft movement with respect to the occupant's head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/01—Minimizing space with more compact designs or arrangements

Definitions

  • the present invention relates to a device for adjusting the front and rear position of a headrest in a vehicle, and more specifically, to a device for adjusting the front and rear position of a headrest in a vehicle that allows a passenger to easily adjust the front and rear position manually.
  • the headrest of a car seat is a safety device that supports the occupant's head. Passengers can rest their heads against the headrest while sitting in the seat, and when a collision or rear-end accident occurs while driving the vehicle, the headrest stably supports the head, preventing cervical spine damage.
  • the headrest is capable of adjusting its position in the forward and backward directions according to the occupant's physical condition
  • an example of a device for adjusting the front and rear position of the headrest of a car according to the prior art is disclosed in Patent Document 1 below.
  • the device for adjusting the front and rear position of the headrest of an automobile disclosed in Patent Document 1 is configured to allow the headrest to move linearly in the front and rear directions using a guide pipe and a guide rod, and includes a latch plate having a plurality of gear teeth formed on a housing inside the headrest. is provided, and a pole that hangs on the latch plate is installed on a mounting bracket mounted on the stay rod of the headrest.
  • the pawls allow forward movement of the latch plate and restrict backward movement.
  • the front-to-back position of the housing that is, the front-to-back position of the headrest, can be adjusted depending on which gear of the latch plate the pole is hung on.
  • the device for adjusting the front and rear position of the headrest of a car has a housing made of a box structure, and the headrest is installed in a structure that surrounds the entire housing, so that the housing occupies a lot of space inside the headrest. This not only makes it difficult to install other devices inside the headrest, but also increases the size of the headrest, which hinders the production of a slimmer headrest.
  • the device for adjusting the front and rear position of the headrest of a car according to the prior art as described above had a latch plate installed vertically so that the pawl rotates in the up and down direction. Therefore, if a large impact occurs downward while the vehicle is driving, there is a risk that the engagement state between the latch plate and the pawl may be released, and when the latch plate fixation by the pawl is released, the headrest returns to the rearmost position (initial position). As a result, the position of the headrest adjusted by the occupant changes, causing a problem in that the occupant's head cannot be supported in the optimal position.
  • the headrest moves to the front due to driving inertia and the pole can be switched to a released state. Therefore, the headrest is returned to the rearmost position, and at this time, the occupant's head, which moves forward due to inertia during a collision and is thrown backward after colliding with the dashboard, cannot be supported from the front, which increases the degree of injury to the occupant. there was.
  • Patent Document 1 Republic of Korea Patent Publication No. 10-2109388 (announced on May 12, 2020)
  • the purpose of the present invention is to provide a device for adjusting the front and rear position of the headrest of an automobile that can slim the headrest by changing the shape and installation structure of the component parts.
  • Another object of the present invention is to provide a device for adjusting the front and rear position of the headrest of a vehicle, which prevents the fixed state of the pole from being released due to a downward impact while driving, thereby stably maintaining the set position of the headrest.
  • the purpose of the present invention is to provide a device for adjusting the front and rear position of the headrest of a vehicle, which improves the safety performance of the headrest by preventing complete release of the pole even if the headrest moves to the front position due to inertia in the event of a collision accident.
  • An apparatus for adjusting the front and rear position of a headrest of a vehicle includes an upper body horizontally mounted on the top of a stay rod; A lower body mounted on the lower surface of the upper body; A base member that is inserted and installed to be movable back and forth between the upper body and the lower body, has a headrest mounting portion on which a headrest is mounted at the front end, and has a pawl operating hole formed through a latch gear formed on one side of the base member; a pawl rotatably installed on the lower body, whose movement and rotation are guided by the pawl operating hole, and which are selectively engaged with one of a plurality of gear teeth of the latch gear; a release plate rotatably installed on the base member and rotating the pawl to a release position when the base member moves to the forefront; and a return spring connected between the upper body and the headrest mounting portion to always apply a restoring force to move the base member rearward.
  • flanges formed at the top of both side walls of the lower body are bolted to the lower surface of the upper body, stay rod mounting portions concave downward are formed at both ends of the upper body, and the stay rod is attached to the stay rod mounting portion.
  • the upper horizontal portion of can be placed and welded.
  • bearings are installed on both side walls of the lower body, and the bearings are equipped with a plurality of steel balls in the longitudinal direction on a straight retainer, and guide grooves into which some of the steel balls are inserted and seated are provided on both sides of the base member. can be formed.
  • the release plate is rotatably installed on the base member via a second mounting pin, and on one side of the outer surface of the release plate, it is located behind the rearmost gear of the latch gear in the operation standby position, and the pawl is positioned at the rearmost position.
  • a first locking protrusion is formed that is pushed by the pawl to rotate the release plate from the operation standby position to the release position, and on the other side of the outer surface of the release plate, when the release plate is in the operation standby position, the pawl
  • a second locking protrusion may be formed that protrudes into the inner area of the pawl operating hole.
  • a locking protrusion on which the second locking protrusion is caught is formed on one side of the pole, and when the base member moves from the position engaged with the rearmost gear tooth to the forefront, the locking protrusion is caught by the second locking protrusion and the pole is It may be configured to pivot to a release position.
  • a stopper groove is formed on another side of the outer surface of the release plate, and a stopper pin fixed to the base member is provided inside the stopper groove, and the stopper pin is connected to the lower and upper surfaces of the stopper groove.
  • the operation standby position and release position of the release plate can be configured to be accurately limited by contacting the .
  • a third locking protrusion is formed on another side of the outer surface of the release plate, and a manipulation protrusion is formed on the lower surface of the upper body corresponding to the third locking protrusion, and when the release plate is in the release position, When the base member moves from the frontmost position to the rearmost position, the third locking protrusion may be caught by the operating protrusion so that the release plate rotates to the operation standby position.
  • a first position change spring may be installed between the pawl and the lower body to assist the pawl in changing its position between the engagement position and the release position and maintain the switched position.
  • a second position change spring may be installed between the release plate and the base member to assist the release plate in changing its position between the operation standby position and the release position and to maintain the changed position.
  • the device for adjusting the front and rear position of the headrest of a vehicle according to the present invention has an advantageous effect in slimming the headrest by changing the shape and installation structure of the component parts so that the components do not occupy a large amount of the internal space of the headrest. .
  • the pole is installed and operated in a horizontal state, so that the fixed state of the pole is not released due to a downward impact while driving, thereby stably maintaining the set position of the headrest. There is an effect.
  • the device for adjusting the front and rear position of the headrest of a car allows the pole to remain in a fully released state even if the headrest at any set position (excluding the rearmost fixed end) moves to the front due to inertia when a collision accident occurs.
  • the headrest does not return to the rearmost position, and as a result, the headrest can support the occupant's head that bounces backwards after moving from the front, thereby alleviating the severity of the occupant's cervical spine injury. There is an effect.
  • Figure 1 is a perspective view of an installed state of a device for adjusting the front and rear headrest positions of an automobile according to an embodiment of the present invention.
  • Figure 2 is an enlarged perspective view of the headrest front and rear position adjusting device.
  • Figure 3 is a diagram showing a state in which the upper body in Figure 2 has been removed.
  • Figure 4 is a diagram showing a state in which the base member in Figure 3 has been removed.
  • Figure 5 is a perspective view showing the bottom structure of the upper body.
  • Figure 6 is a diagram showing a state in which the headrest is located at the rearmost position and the pawl is coupled to the frontmost position (position 0) of the latch gear.
  • Figure 7 is a diagram showing the initial state in which the headrest is advanced and the pawl is coupled to the rearmost position (3rd position) of the latch gear.
  • Figure 8 is a diagram showing the state in which the pawl is fully engaged in the rearmost position (third position) of the latch gear and the release plate is rotated to the release position in the state of Figure 7.
  • Figure 9 is a diagram showing a state in which the headrest is further advanced and the pole is rotated to the release position by the release plate in the state of Figure 8.
  • Base member 31 Headrest mounting portion
  • Stopper pin 91 First position change spring
  • Figure 1 is a perspective view of an installed state of a device for adjusting the front and rear position of the headrest of a vehicle according to an embodiment of the present invention
  • Figure 2 is an enlarged perspective view of the device for adjusting the front and rear position of the headrest
  • Figure 3 is a state in which the upper body in Figure 2 is removed.
  • Figure 4 is a drawing showing a state in which the base member in Figure 3 has been removed
  • Figure 5 is a perspective view showing the bottom structure of the upper body.
  • the device for adjusting the front and rear position of the headrest of a vehicle includes an upper body 10, a lower body 20, a base member 30, a pole 40, and a release. Includes plate 50, bearing 60, and return spring 70.
  • the upper body 10 has a substantially rectangular flat shape, forms a passage for forward and backward movement of the base member 30 together with the lower body 20, and is mounted horizontally on the top of the stay rod 1.
  • the upper body (10) serves to secure the entire ‘headrest front and rear position adjustment device’ to the stay rod (1).
  • the upper body 10 is formed with stay rod mounting portions 11 having a downwardly concave shape at both ends.
  • the upper horizontal portion of the stay rod (1) is welded to the stay rod mounting portion (11). Therefore, when the stay rod (1) is inserted and installed into the installation hole formed at the top of the seatback, the 'headrest front and rear position adjusting device' is located at the top of the seatback.
  • a first hook 12 is formed at the center of the rear end of the upper body 10 to hang one end of the return spring 70.
  • an operating protrusion 13 that rotates the release plate 50 from the release position to the standby position is formed to protrude on one side of the bottom of the upper body 10 (see FIG. 5).
  • the lower body 20 is mounted on the lower surface of the upper body 10.
  • the lower body 20 is a structural part in which two walls are formed on the bottom plate, and horizontal flanges 21 are formed at the top of both walls, and both flanges 21 are bolted to the lower surface of the upper body 10. It is mounted with B) and nut (N).
  • the base member 30 is inserted between the upper body 10 and the lower body 20, and a movement passage that can move back and forth is formed.
  • the flanges 21 formed at the top of both walls of the lower body 20 are bolted to the lower surface of the upper body 10, and the stay rod 1 is attached to the stay rod mounting portion 11 of the upper body 10.
  • the upper horizontal part is placed and welded.
  • a pole 40 is installed on one side of the upper surface of the bottom plate of the lower body 20 in a rotatable state via a first mounting pin 81.
  • linear bearings 60 are provided on the inside walls of both sides of the lower body 20 to enable smooth forward and backward movement of the base member 30.
  • the base member 30 is a rectangular plate-shaped part that is inserted into the moving passage between the upper body 10 and the lower body 20 and moves back and forth, and the base member 30 accommodates the pole 40 to form a pole.
  • a pole operating hole (32) is formed that provides an operating space for (40). That is, the base member 30 is inserted and installed to be movable back and forth between the upper body 10 and the lower body 20, and further, a headrest mounting portion 31 on which a headrest is mounted is formed at the front end.
  • a pawl operating hole 32 with a latch gear 33 formed on the side is formed through it.
  • the pole operation hole 32 limits the forward and backward movement range of the base member 30 with respect to the pole 40, whose position is fixed, to within the range of the pole operation hole 32, thereby limiting the forward and backward movement position of the headrest. Additionally, the pawl operating hole 32 serves to guide the rotation of the pawl 40 when it returns to the front gear groove (0th stage position).
  • a latch gear 33 composed of a plurality of gear teeth is formed on one side of the pawl operating hole 32 (the side on which the release plate 50 is installed).
  • the latch gear 33 includes a total of three gear teeth, and a total of four gear grooves into which the pawl 40 is hung are formed (three grooves formed behind the gear teeth and in front of the frontmost gear). 1 groove). Therefore, since there are four positions where the pole 40 is hung, the position of the headrest can be fixed at a total of four points: 0th stage, 1st stage, 2nd stage, and 3rd stage.
  • the 0th stage position is the position where the headrest is pushed to the rearmost position
  • the 3rd stage position is the most forward position where the headrest can be fixed.
  • the reference position is when the headrest is pushed to the rearmost position, and at this time, the pawl 40 is inserted into the frontmost gear groove (position 0). In that state, when the rider pulls the headrest forward, the pawl (40) moves backwards from the 0th gear groove to the 1st gear groove, 2nd gear groove, and 3rd gear groove in order, and is caught in the corresponding gear groove.
  • the headrest can be fixed in position.
  • the pawl 40 is selectively engaged with any one of the latch gears 33 (the pawl 40 is inserted into the gear groove immediately behind the gear tooth to support the gear tooth against the restoring force of the return spring 70). It is a part that fixes the headrest in the selected position.
  • the pole 40 is rotatably installed on the bottom plate of the lower body 20 using the first mounting pin 81. That is, the pawl 40 is rotatably installed on the lower body 20, its movement and rotation are guided by the pawl operating hole 32, and is selectively engaged with any one of a plurality of gear teeth of the latch gear 33. do. Accordingly, the pole 40 can be separated from the latch gear 33 or caught again while moving with the base member 30 when the base member 30 moves back and forth.
  • the pole 40 is connected to the bottom plate of the lower body 20 via the first position change spring 91 (see FIG. 7) and has an engaging (meshing) position where it is engaged with the latch gear 33 and the latch gear. It can be separated from (33) and switched to the release position to maintain the release state.
  • the 'position change spring' is an arc-shaped spring that connects a fixed part and a movable part and is used to switch the position of the movable part relative to the fixed part between two positions and maintain the switched position.
  • the first position change spring 91 is installed between the pole 40 and the lower body 20 to assist the pole 40 in changing its position between the engaging position and the release position and to maintain the changed position. You can.
  • the release plate 50 is rotatably installed on the upper surface of the base member 30 using a second mounting pin 82.
  • a first locking protrusion 51 on which the pawl 40 is hung is formed on one side of the outer surface of the release plate 50 toward the latch gear 33 (see FIG. 6).
  • the pole 40 is formed with a thickness that is the sum of the thickness of the portion around the pole operating hole 32 of the base member 30 and the thickness of the release plate 50, and acts as the first obstacle between the latch gear 33 and the release plate 50. It is designed so that it can be hung together with the flag (51).
  • the release plate 50 is rotatably installed on the base member 30 via the second mounting pin 82, and a latch gear 33 is installed on one side of the outer surface of the release plate 50 in an operation standby position.
  • the first locking protrusion 51 is located at the rear of the rearmost gear and is pushed by the pawl 40 when the pawl 40 is engaged with the rearmost gear, thereby rotating the release plate 50 from the operation standby position to the release position. ) can be formed.
  • a second locking protrusion 52 is formed on the release plate 50 at a predetermined distance rearward from the first locking protrusion 51 (see FIG. 6).
  • the second locking protrusion 52 is the pole operating hole 32 when the pole 40 pushes the first locking protrusion 51 to rotate the release plate 50 counterclockwise around the second mounting pin 82. ) It protrudes into the inner area, and the pole 40 can be switched to the release state at that position.
  • a locking protrusion 41 is formed on one side of the outer peripheral surface of the pole 40 in response to the second locking protrusion 52 of the release plate 50 (see FIG. 6).
  • the second locking protrusion 52 pushes the locking protrusion 41, thereby rotating the pawl 40 from the locking (engaging) position to the release position. That is, the release plate 50 is rotatably installed on the base member 30, and rotates the pawl 40 to the release position when the base member 30 moves to the forefront.
  • the other side of the outer surface of the release plate 50 is in the outer area of the pole operation hole 32 when the release plate 50 is in the operation standby position, and when the release plate 50 is rotated to the release position, A second stopping protrusion 52 may be formed protruding into the inner area of the pole operating hole 32.
  • a locking protrusion 41 on which the second locking protrusion 52 is caught is formed on one side of the pole 40, and when the base member 30 moves from the position engaged with the rearmost gear to the front, the locking protrusion 41 ) is caught on the second locking protrusion 52, so that the pole 40 can be rotated to the release position. And, when the base member 30 is moved to the rearmost position by the return spring 70 when the pawl 40 is in the release position, the pawl 40 is guided to the inner surface of the pawl operating hole 32 and engages the latch gear. It is inserted into the front gear groove of (33).
  • a third locking protrusion 53 is formed on the release plate 50 (see FIG. 6).
  • the third locking protrusion 53 is formed on the outer peripheral surface opposite to the portion where the first locking protrusion 51 and the second locking protrusion 52 are formed.
  • the third locking protrusion 53 is operated by being caught by the manipulation protrusion 13 formed on the lower surface of the upper body 10. When the headrest returns from the frontmost position to the reference position, the third locking protrusion 53 is operated.
  • the release plate 50 is caught by the protrusion 13 and rotated clockwise, the release plate 50 is switched from the release position to the operation standby position, and the second engaging protrusion 52 of the release plate 50 operates in a pole operation. It returns from the area inside the hole 32 to the outside area.
  • a third locking protrusion 53 is formed on another side of the outer surface of the release plate 50, and a manipulation protrusion 13 is formed on the lower surface of the upper body 10 in response to the third locking protrusion 53. is formed, and when the base member 30 moves from the frontmost position to the rearmost position with the release plate 50 in the release position, the third locking protrusion 53 is caught on the manipulation protrusion 13 and the release plate 50 ) can be rotated to the operational standby position.
  • a stopper groove 54 is formed on one side of the outer peripheral surface of the release plate 50, and a stopper pin 83 is installed inside the stopper groove 54.
  • the stopper pin 83 is fixed to the base member 30. Therefore, the stopper pin 83 is caught on both walls in the rotational direction of the stopper groove 54 according to the rotation direction of the release plate 50, thereby limiting the amount of rotation of the release plate 50. That is, a stopper groove 54 is formed on another side of the outer surface of the release plate 50, and a stopper pin 83 fixed to the base member 30 is provided inside the stopper groove 54, As the stopper pin 83 abuts the lower and upper surfaces of the stopper groove 54, the operation standby position and release position of the release plate 50 can be accurately limited.
  • the release plate 50 is connected to the base member 30 via the second position change spring 92 (see FIG. 6). Therefore, the second locking protrusion 52 can switch and maintain its position between the operation standby position located outside the pole operation hole 32 and the release position located inside the pole operation hole 32. That is, the second position change spring 92 is installed between the release plate 50 and the base member 30 to assist in changing the position of the release plate 50 between the operation standby position and the release position and maintain the changed position. You can do it.
  • the bearings 60 are installed inside the walls on both sides of the lower body 20.
  • the bearing 60 is a straight retainer equipped with a plurality of steel balls 61 in the longitudinal direction.
  • the steel balls 61 are in rolling contact with both sides of the base member 30, so that the base member 30 moves smoothly in the front-to-back direction. You can move.
  • Straight guide grooves 34 into which the steel ball 61 is partially inserted and seated may be formed on both end surfaces of the base member 30. That is, bearings 60 are installed on both walls of the lower body 20, and the bearings 60 are provided with a plurality of steel balls 61 in the longitudinal direction on a straight retainer, and are located on both sides of the base member 30.
  • a guide groove 31 into which a portion of the steel ball is inserted and seated may be formed.
  • the return spring 70 is connected between the upper body 10 and the headrest mounting portion 31 to always apply a restoring force to move the base member 30 rearward, and is a component that moves the headrest to the reference position. .
  • the return spring 70 is disposed on the upper part of the upper body 10, and as described above, one end is hung on the first hook 12 formed on the upper body 10, and the other end is attached to the headrest mounting part 31. It is hung on the formed second hook (35). Therefore, the return spring 70 increases as the base member 30 moves forward, thereby always generating a return force that moves the base member 30 to the reference position.
  • the second hook 35 is a horizontal bar-shaped portion formed on the headrest mounting portion 31, and through holes are formed in the upper and lower portions of the second hook 35, so that the ring at the end of the return spring 70 is connected to the second hook. It is designed to be hung at (35).
  • the pawl 40 is inserted into the frontmost gear groove (0th position) of the latch gear 33.
  • the release plate 50 is in a standby state for operation, the first locking protrusion 51 is located rearward than the third gear (rearmost gear) of the latch gear 33, and the second locking protrusion 52 is in a pawl operation state. It is located in the outer area of the hole 32.
  • This operation standby state is maintained by the second position change spring 92, and at this time, the stopper pin 83 touches the lower side of the stopper groove 54, so the operation standby position is always constant.
  • the occupant seated on the seat
  • the occupant can adjust the position by pulling the headrest forward. Since the headrest is installed in the headrest mounting portion 31, when the occupant pulls the headrest, the entire base member 30 moves forward.
  • the pawl 40 is pushed up along the slope of the gear tooth, thereby releasing the meshing state between the pawl 40 and the latch gear 33, and releasing the hand from the headrest at a randomly selected position.
  • the pole 40 is rotated toward the latch gear 33 by the first position change spring 91, and the base member 30 moves rearward by the return spring 70, so that the pole 40 moves to the selected position.
  • the position of the headrest is fixed by being hooked to the rear of the gear. In this way, the position of the headrest can be adjusted in the order 0 ⁇ 1st ⁇ 2nd ⁇ 3rd.
  • the pole 40 when trying to adjust the position of the headrest from a relatively high level to a low level, the pole 40 cannot be moved directly from the high level position to the low level position, and must be moved to the rearmost fixed end (third level in the illustrated embodiment). Afterwards, it is possible to return the pawl 40 to the 0 position through the release process of the pawl 40 and then pull the headrest again to select the desired level.
  • Figure 7 shows the initial point in time when the pole 40 begins to engage in the third position.
  • the end of the pole (40) is caught on the first locking protrusion (51) of the base plate (50), but the first locking protrusion (51) has not yet been pushed, and the second locking protrusion (52) is still in the pole operating hole ( 32) It is located in the outer region.
  • the second locking protrusion 52 of the release plate 50 protrudes into the inner area of the pole operation hole 32 and faces the locking protrusion 41 of the pole 40 (release plate ( 50) release position).
  • the release plate 50 rotates until the stopper pin 83 touches the upper side of the stopper groove 54, and this state is maintained by the second position change spring 92.
  • the base member 30 moves forward and the second locking protrusion 52 of the release plate 50 ) pushes the locking step 41, thereby rotating the pole 40 clockwise. Accordingly, the engagement state of the pawl 40 with the latch gear 33 is released, and the pawl 40 is switched to a released state in contact with the opposite side of the pawl operating hole 32. The release position of the pole 40 is maintained by the first position change spring 91.
  • the device for adjusting the front and rear position of the headrest can adjust the position of the headrest to a position desired by the occupant by repeating the process of FIGS. 6 to 9.
  • the parts for adjusting the front and rear position of the headrest are all installed in the horizontal portion of the upper body 10, the lower body 20, and the base member 30.
  • the headrest is installed on the headrest mounting portion 31, which is a vertical portion of the base member 30. Therefore, there is no need to install mechanisms for adjusting the front and rear positions inside the headrest, which is very advantageous in making the headrest slim.
  • the latch gear 33 is formed in the horizontal portion of the base member 30, and the pole 40 is also installed on the lower body 20, which is a horizontal plate. It is designed to rotate on a horizontal plane. Therefore, even if a very strong downward impact occurs while the vehicle is running, the impact direction and the operating direction of the pole 40 are different, so the pole 40 cannot be separated from the latch gear 33, so the position of the headrest selected by the occupant is very It can be maintained stably.
  • the device for adjusting the front and rear positions of the headrest allows the headrest to be moved to the rearmost fixed position (3rd position) even if a collision accident occurs during driving and the headrest is moved to the frontmost position due to inertia. Except, the pole 40 does not fully transition to the released state. In the 0th, 1st, and 2nd stage fixed states, the release plate 50 is in a standby state (not in the release position) and the second locking protrusion 52 does not protrude into the inner area of the pole operation hole 32. Therefore, even if the base member 30 moves to the forefront due to inertia during a collision, the pole 40 cannot be converted to the release state.
  • the headrest when the headrest is in the 0th, 1st, or 2nd position, the headrest does not move to the frontmost position and then to the rearmost position, but moves to the 3rd position and is fixed, so that the occupants who moved forward due to inertia are affected.
  • the headrest can quickly support the occupant's head more forward, thereby alleviating the severity of the occupant's cervical spine injury.
  • the device for adjusting the front and rear position of the headrest according to the present invention is advantageous in slimming the headrest, prevents release of the pole when a downward impact occurs during driving, improves the position maintenance performance of the headrest, and improves the position maintenance performance of the headrest in the event of a collision accident.
  • the head can be supported more forward, which can lessen the severity of the injury.
  • the present invention relates to a device for adjusting the front and rear position of the headrest of an automobile, and can be used in industrial fields related to the headrest of automobile seats.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

La présente invention concerne un dispositif de réglage de la position avant-arrière d'un appuie-tête d'automobile, comprenant : un corps supérieur ; un corps inférieur ; un élément de base inséré et installé de façon à pouvoir se déplacer en va-et-vient entre le corps supérieur et le corps inférieur ; un montant qui est installé de manière rotative sur le corps inférieur et vient sélectivement en prise avec l'une d'une pluralité de dents d'engrenage de l'engrenage de verrouillage, le mouvement et la rotation du montant étant guidés par le trou d'actionnement de montant ; une plaque de libération qui est installée de manière rotative sur l'élément de base et fait tourner le montant vers une position de libération lorsque l'élément de base se déplace vers la position la plus en avant ; et un ressort de rappel qui est relié entre le corps supérieur et la partie de montage d'appuie-tête et applique constamment une force de rappel qui déplace l'élément de base vers l'arrière. Par conséquent, ce dispositif est avantageux pour amincir l'appuie-tête, le montant est empêché de se rompre sous l'effet d'un impact vers le bas pendant que l'automobile est en mouvement, et l'appuie-tête ne se déplace pas vers la position la plus en arrière et devient re-fixé à une position plus en avant lorsque le montant se rompt en raison d'une inertie de collision, et ainsi des blessures au cou pour les occupants peuvent être atténuées.
PCT/KR2023/009277 2022-08-22 2023-06-30 Dispositif de réglage de la position avant-arrière d'un appuie-tête d'automobile WO2024043499A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020220105053A KR20240026771A (ko) 2022-08-22 2022-08-22 자동차의 헤드레스트 전후 위치 조절 장치
KR10-2022-0105053 2022-08-22

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WO2024043499A1 true WO2024043499A1 (fr) 2024-02-29

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KR (1) KR20240026771A (fr)
WO (1) WO2024043499A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200406574Y1 (ko) * 2005-10-26 2006-01-23 주식회사 우보테크 헤드레스트의 수평이동장치
JP5513692B1 (ja) * 2012-11-09 2014-06-04 備前発条株式会社 ヘッドレスト用位置調節装置及びヘッドレスト
US8950815B2 (en) * 2012-11-29 2015-02-10 Daimay North America Automotive, Inc. Four-way adjustable headrest
KR102109388B1 (ko) * 2018-11-19 2020-05-12 주식회사다스 자동차의 헤드레스트 전후 위치 조절 장치
KR20210048831A (ko) * 2019-10-24 2021-05-04 현대자동차주식회사 슬림형 헤드레스트 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200406574Y1 (ko) * 2005-10-26 2006-01-23 주식회사 우보테크 헤드레스트의 수평이동장치
JP5513692B1 (ja) * 2012-11-09 2014-06-04 備前発条株式会社 ヘッドレスト用位置調節装置及びヘッドレスト
US8950815B2 (en) * 2012-11-29 2015-02-10 Daimay North America Automotive, Inc. Four-way adjustable headrest
KR102109388B1 (ko) * 2018-11-19 2020-05-12 주식회사다스 자동차의 헤드레스트 전후 위치 조절 장치
KR20210048831A (ko) * 2019-10-24 2021-05-04 현대자동차주식회사 슬림형 헤드레스트 장치

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