CN110395150B - Automobile seat and height adjuster thereof - Google Patents
Automobile seat and height adjuster thereof Download PDFInfo
- Publication number
- CN110395150B CN110395150B CN201910818293.7A CN201910818293A CN110395150B CN 110395150 B CN110395150 B CN 110395150B CN 201910818293 A CN201910818293 A CN 201910818293A CN 110395150 B CN110395150 B CN 110395150B
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- China
- Prior art keywords
- piece
- lock
- driving plate
- pawl
- fixed cover
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- 230000000903 blocking effect Effects 0.000 claims abstract description 55
- 230000009471 action Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 abstract description 2
- 230000008855 peristalsis Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000002572 peristaltic effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition 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
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention relates to an automobile seat and a height adjuster thereof, wherein the height adjuster comprises a shell, a fixed cover, a driving part, a locking part and a core piece provided with a ratchet wheel, and the ratchet wheel is provided with an inner gear ring and an outer gear ring; the driving part comprises a driving plate, a pawl and a blocking piece, the blocking piece is clamped between the fixed cover and the core piece, ratchets are arranged on two sides of the pawl, a first hinge point of the pawl is hinged with the driving plate, a second hinge point of the pawl is hinged with the blocking piece, and the driving plate can drive the pawl to rotate around the second hinge point so that the ratchets on one side of the pawl are meshed with or separated from the annular gear; the locking part comprises a lock spring and a lock clamp relatively fixed with the shell along the circumferential direction, the lock clamp comprises a lock block which can be matched with the outer gear under the action of the lock spring, the driving plate is further provided with an unlocking plate, and the rotation of the driving plate can act on the lock clamp through the unlocking plate to enable the lock block to be matched with or separated from the outer gear. Can prevent to make the height of car seat change because of the peristalsis of core spare in the use, guarantee car seat's travelling comfort.
Description
Technical Field
The invention relates to the technical field of vehicle seats, in particular to a vehicle seat and a height adjuster thereof.
Background
The automobile seat can be adjusted in height through the lifting mechanism to meet the comfortable riding requirements of different users, the lifting mechanism comprises a height adjuster, an automobile seat toothed plate and other parts, the height adjuster is used for controlling the realization of the lifting function of the automobile seat and keeping the height of the automobile seat after adjustment, and the height adjuster consists of a driving part and a core part.
In the use process of the automobile seat, the core piece can possibly creep (slowly rotate) under the action of alternating load, and the creep of the core piece can finally lead to the change of the height of the automobile seat, so that a user needs to readjust the height of the automobile seat after a period of time so as to ensure the comfort of the automobile seat.
Therefore, how to prevent the height of the automobile seat from changing due to the peristaltic movement of the core member in the use process, and ensure the comfort of the automobile seat is a technical problem required to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide an automobile seat and a height adjuster thereof, which can prevent the height of the automobile seat from changing due to the creeping of a core piece in the use process and ensure the comfort of the automobile seat.
In order to solve the technical problems, the invention provides a height adjuster of an automobile seat, which comprises a shell, a fixed cover, a driving part, a locking part and a core piece provided with a ratchet wheel, wherein the fixed cover is fixedly arranged at the top end of the shell and surrounds the top end to form a containing cavity, the core piece is positioned in the containing cavity, and the ratchet wheel is provided with an inner gear ring and an outer gear ring; the driving part comprises a driving plate connected with the operating handle, a pawl and a blocking piece, wherein the pawl and the blocking piece are arranged in the accommodating cavity, the driving plate, the blocking piece and the core piece are coaxial, the driving plate is rotatably connected with the fixed cover, the blocking piece is clamped between the fixed cover and the core piece, ratchets are respectively arranged on two sides of the pawl, a first hinging point of the pawl is hinged with the driving plate, a second hinging point of the pawl is hinged with the blocking piece, and the rotation of the driving plate can drive the pawl to rotate around the second hinging point so as to enable the ratchets on one side of the pawl to be meshed with or separated from the annular gear; the locking part comprises a lock spring and a lock card which is fixed relative to the shell along the circumferential direction, the lock card comprises a lock block which can be matched with the outer gear under the action of the lock spring, the driving plate is also provided with an unlocking plate, and the rotation of the driving plate can act on the lock card through the unlocking plate so as to enable the lock block to be matched with or separated from the outer gear.
The locking spring can provide elastic force and act on the locking clamp to enable the locking block of the locking clamp to be matched with the outer gear ring of the ratchet wheel, so that after the height of the automobile seat is adjusted to a proper position through the height adjuster, the driving plate returns to the original position, at the moment, the locking block of the locking clamp is matched with the outer gear ring, and the locking clamp is relatively fixed with the shell along the circumferential direction.
When the height of the automobile seat needs to be adjusted, the driving plate rotates under the driving of the operating handle, the lock block is separated from the outer gear through the action of the unlocking piece on the lock clamp, at the moment, the locking part is in an unlocking state, the height of the automobile seat is adjusted through the rotation of the operating handle (driving plate), after the position is adjusted, the operating handle (driving plate) returns to the original position, and the lock block is matched with the outer gear again to realize locking, so that the height of the automobile seat is prevented from being changed in the use process.
This altitude mixture control ware can realize carrying out two-way drive to car seat's high position and adjust, simultaneously, and locking part simple structure can realize in the use, restricts the peristalsis of core to make car seat can keep comparatively comfortable height, and then guarantee car seat's travelling comfort.
Optionally, the unlocking piece is provided with a slide way and a limit groove arranged on the slide way, the lock clamp further comprises a limit piece, when the limit piece is matched with the limit groove, the lock piece is matched with the outer gear ring, and when the limit piece slides along the slide way, the lock piece is separated from the outer gear ring; the rotation of the driving plate can drive the unlocking piece to rotate so that the limiting piece slides to the slideway along the inner wall of the limiting groove and slides along the slideway.
Optionally, the device further comprises a baffle plate fixedly arranged on the outer wall of the shell and a torsion spring sleeved on the shell, wherein the driving plate is provided with a baffle plate, and the baffle plate are both positioned between two supporting legs of the torsion spring; the lock spring is a leaf spring with the bottom fixed with the baffle plate, and the lock clamp is arranged between the baffle plate and the leaf spring.
Optionally, the locking part further includes a clamping groove, and the clamping groove clamps the baffle plate and the leaf spring from the bottom at the same time.
Optionally, the bottom of separation blade is equipped with the breach of stepping down and locates the locating hole of stepping down the breach top, the lower part of lock card be equipped with the location arch of locating hole looks adaptation, just the lock card can wind the location arch rotates and makes the bottom of lock card passes the breach of stepping down.
Optionally, a limiting notch is arranged at the top end of the baffle plate, and the fixed cover is provided with a hole structure corresponding to the limiting notch; the locking piece is positioned in the limiting notch and can pass through the hole structure to be matched with the outer gear ring.
Optionally, the fixing cover is provided with a special-shaped hole, the outer edge of the special-shaped hole is an arc-shaped edge with an opening facing the center of the fixing cover, and two circumferential sides of the arc-shaped edge are provided with extension holes extending to one side far away from the center of the fixing cover; the first hinge point passes through the special-shaped hole and is hinged with the driving plate, the pawl is respectively provided with a side boss at two sides of the first hinge point, the driving plate returns to the original position in-process, and the side bosses can be tightly attached to the arc-shaped edge and slide along the arc-shaped edge, so that the ratchet is separated from the inner gear ring.
Optionally, the device further comprises a connecting sheet, wherein the connecting sheet is arranged on one side, far away from the driving plate, of the fixed cover, and penetrates through the center of the fixed cover and is fixed with the driving plate.
Optionally, the blocking piece is further provided with an elastic member capable of providing an axial supporting force.
In addition, the invention also provides an automobile seat, which comprises the height adjuster.
The technical effects of the car seat with the height adjuster are similar to those of the car seat with the height adjuster, and the car seat is not repeated for saving the space.
Drawings
FIG. 1 is a schematic view of a height adjuster for an automobile seat according to an embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of the structure of the lock block mated with the outer gear ring;
FIG. 4 is a schematic view of the lock block disengaged from the outer gear ring;
FIG. 5 is a schematic diagram of the structure of the spacing piece and the spacing groove;
FIG. 6 is a schematic view of the structure of the stopper sliding along the slideway;
FIG. 7 is an exploded view of the locking portion and flap of the first construction;
FIG. 8 is a schematic view of a structure of a locking portion of the height adjuster having a second structure;
FIG. 9 is a schematic structural view of a pawl;
Fig. 10 is a schematic structural view of the stationary cover.
In fig. 1-10, the reference numerals are as follows:
1-a housing;
2-fixed covers, 21-hole structures, 22-special-shaped holes, 221-arc edges and 222-extension holes;
3-driving plates, 31-baffle plates, 32-unlocking plates, 321-limit grooves and 322-slide ways;
4-locking parts, 41-locking springs, 411-clamping jaws, 42-locking cards, 421-locking blocks, 422-limiting pieces, 423-positioning protrusions and 43-clamping grooves;
5-ratchet wheel, 51-inner gear ring and 52-outer gear ring;
6-pawl, 61-ratchet, 62-first hinge point, 63-second hinge point, 64-side boss;
7-a blocking piece, 71-an elastic piece;
8-torsion springs, 81-supporting legs;
9-baffle plates, 91-abdication notches, 92-positioning holes and 93-limit notches;
10-core piece;
11-a rotating shaft;
12-connecting sheet.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 10, fig. 1 is a schematic structural view of a height adjuster of an automobile seat according to an embodiment of the invention; FIG. 2 is an exploded view of FIG. 1; FIG. 3 is a schematic view of the structure of the lock block mated with the outer gear ring; FIG. 4 is a schematic view of the lock block disengaged from the outer gear ring; FIG. 5 is a schematic diagram of the structure of the spacing piece and the spacing groove; FIG. 6 is a schematic view of the structure of the stopper sliding along the slideway; FIG. 7 is an exploded view of the locking portion and flap of the first construction; FIG. 8 is a schematic view of a structure of a locking portion of the height adjuster having a second structure; FIG. 9 is a schematic structural view of a pawl; fig. 10 is a schematic structural view of the stationary cover.
The embodiment of the invention provides an automobile seat and a height adjuster thereof, wherein the automobile seat comprises the height adjuster, and the height adjuster is used for adjusting the height of the automobile seat so that the automobile seat can meet the height requirement of a user and the comfort of the user is improved.
Specifically, as shown in fig. 1 and 2, the height adjuster includes a housing 1, a fixed cover 2, a driving part, a locking part 4, and a core member 10, wherein the fixed cover 2 is fixedly arranged at the top end of the housing 1 and encloses a housing cavity, the core member 10 is positioned in the housing cavity, the core member 10 is provided with a ratchet wheel 5, and the ratchet wheel 5 is provided with an inner gear ring 51 and an outer gear ring 52.
The driving part comprises a driving plate 3, a pawl 6 and a blocking piece 7 which are arranged in the accommodating cavity, wherein the driving plate 3, the blocking piece 7 and the core piece 10 are coaxially arranged. Specifically, the driving plate 3 is connected with the operating handle, and the driving plate 3 is rotatably connected with the fixed cover 2, the blocking piece 7 is clamped between the fixed cover 2 and the core piece 10, the ratchet teeth 61 matched with the annular gear 51 are respectively arranged on two sides of the pawl 6, the pawl 6 comprises a first hinge point 62 and a second hinge point 63, the first hinge point 62 is hinged with the driving plate 3, and the second hinge point 63 is hinged with the blocking piece 7.
In detail, the first hinge point 62 and the second hinge point 63 of the pawl 6 are not coaxially disposed, and the second hinge point 63 is not coaxial with the rotation axis of the blocking piece 7 (i.e., the axes of the driving plate 3, the fixed cover 2, the blocking piece 7, and the core 10), so that the driving plate 3 hinged to the first hinge point 62 can rotate the pawl 6 when rotating.
The blocking piece 7 is clamped between the fixed cover 2 and the core piece 10, when the driving plate 3 drives the ratchet wheel 5 to rotate, the ratchet wheel 5 can drive the blocking piece 7 to rotate through the second hinge point 63, and the blocking piece 7 is clamped between the fixed cover 2 and the core piece 10, so that the blocking piece 7 is prevented from rotating due to friction resistance when rotating relative to the core piece 10 and the fixed cover 2. Therefore, when the driving plate 3 rotates under the action of the operating handle, the pawl 6 can be driven to rotate through the first hinge point 62, the pawl 6 can rotate around the second hinge point 63 due to the blocking action (friction resistance) of the blocking piece 7, so that the ratchet teeth 61 on one side of the pawl 6 are meshed with the inner gear ring 51, and when the operating handle returns, the driving plate 3 reversely rotates and returns (namely reversely rotates to the initial position and the middle position of the rotation section of the driving plate 3 relative to the housing 1), and at the moment, the reverse rotation of the driving plate 3 reversely rotates the pawl 6 around the second hinge point 63 until the ratchet teeth 61 are separated from the inner gear ring 51.
The ratchet teeth 61 are respectively arranged on two sides of the pawl 6, that is, the driving plate 3 rotates in the forward and reverse directions under the action of the operating handle, and the rotation of the driving plate 3 in both directions can drive the ratchet wheel 5 to rotate around the second hinging point 63 until the ratchet teeth 61 are meshed with the inner gear ring 51, so that the bidirectional driving of the height adjuster can be realized. Of course, in the present embodiment, of the ratchet teeth 61 on both sides of the pawl 6, at most only one ratchet tooth 61 can be engaged with the ring gear 51 at the same time.
The locking part 4 comprises a lock spring 41 and a lock catch 42, wherein the lock catch 42 is fixed relative to the housing 1 in the circumferential direction, the lock catch 42 comprises a lock piece 421 matched with the outer gear ring 52, the lock catch 42 is matched with the outer gear ring 52 under the action of the lock spring 41 to limit the rotation of the ratchet wheel 5, the driving plate 3 is further provided with an unlocking piece 32, and the rotation of the driving plate 3 can act on the lock catch 42 through the unlocking piece 32 to enable the lock piece 421 to be matched with or separated from the outer gear ring 52.
That is, the locking spring 41 can provide an elastic force and act on the locking clip 42 so that the locking piece 421 of the locking clip 42 is engaged with the outer gear ring 52 of the ratchet wheel 5, and thus, when the height of the car seat is adjusted to a proper position by the height adjuster, the driving plate 3 returns to the original position, at this time, the locking piece 421 of the locking clip 42 is engaged with the outer gear ring 52, and since the locking clip 42 is relatively fixed to the housing 1 in the circumferential direction, when the core member 10 of the height adjuster is rotated due to the influence of the alternating load, the ratchet wheel 5 is driven to rotate, and the rotation of the ratchet wheel 5 is transmitted to the housing 1 by the locking clip 42, and since the housing 1 is fixed, the rotation of the ratchet wheel 5 is restrained, thereby restricting the rotation of the core member 10 and the car seat, achieving the anti-creep effect, and preventing the seat from sinking.
When the height of the automobile seat needs to be adjusted, the driving plate 3 rotates under the drive of the operating handle, the lock piece 421 is separated from the outer gear ring 52 through the unlocking piece 32 acting on the lock clip 42, at this time, the locking part 4 is in an unlocking state, the height of the automobile seat can be adjusted through the rotation of the operating handle (driving plate 3), after the position is adjusted, the operating handle (driving plate 3) returns to the original position, and the lock piece 421 is matched with the outer gear ring 52 again to realize locking, so that the height of the automobile seat is prevented from being changed in the use process.
The height adjuster in this embodiment can realize carrying out two-way drive to car seat's height position and adjust, simultaneously, locking part 4 simple structure can realize in the use, restricts the peristaltic motion of core 10 to make car seat can keep comparatively comfortable height, and then guarantee car seat's travelling comfort.
In addition, in this embodiment, the core member 10 is provided with a rotating shaft 11, and the blocking piece 7, the fixed cover 2 and the driving plate 3 are sequentially sleeved on the rotating shaft 11, so as to realize coaxial arrangement among the core member 10, the blocking piece 7, the fixed cover 2 and the driving plate 3, and of course, in this embodiment, the rotating shaft 11 may be arranged on any one of the blocking piece 7, the fixed cover 2 and the driving plate 3.
In the above embodiment, the unlocking plate 32 is provided with the slide way 322 and the limiting groove 321 arranged on the slide way 322, the locking clamp 42 comprises the limiting piece 422 matched with the limiting groove 321, when the limiting piece 422 is matched with the limiting groove 321, the locking piece 421 is locked with the outer gear ring 52 matched with the locking part 4 of the ratchet wheel 5, the rotation of the ratchet wheel 5 is limited, when the limiting piece 422 slides along the slide way 322, the locking piece 421 is separated from the outer gear ring 52, the locking part 4 is unlocked, and the rotation of the ratchet wheel 5 is not limited any more. When the driving plate 3 rotates under the action of the operating handle, the unlocking plate 32 can be driven to rotate, so that the limiting piece 422 can push the locking spring 41 and cling to the groove wall of the limiting groove 321 under the action of the elasticity of the locking spring 41 and slide to the slideway 322 along the groove wall, and then slide along the slideway 322, so that the locking part 4 is unlocked (as shown in fig. 4 and 6); when the driving plate 3 rotates reversely, the unlocking piece 32 rotates reversely, so that the limiting piece 422 moves reversely along the slideway 322, when the driving plate 3 returns to the original position, the limiting piece 422 slides into the limiting groove 321 along the slideway 322 to match the limiting piece and the limiting groove 321, and the locking piece 421 is matched with the outer gear 52, namely, the locking part 4 is in a locking state (shown in fig. 3 and 5).
The whole structure of the locking part 4 can be simple by the arrangement, the locking and unlocking processes of the locking part 4 can be realized only by rotating the driving plate 3, and no additional operation is needed manually.
In this embodiment, the specific structures of the limiting groove 321 and the sliding way 322 are not limited, for example, the end of the limiting piece 422 may be configured to have a V-shaped cross section and protrude outward, the limiting groove 321 may be configured to have a smooth transition structure between the groove wall such as a V-shaped groove or a U-shaped groove and the end surface of the limiting groove 321, and the sliding way 322 may be a sliding way or an arc surface on the side surface of the unlocking piece 32.
Or in this embodiment, the structure of the unlocking plate 32 is not limited, for example, the structure of the limiting groove 321 may be a V-shaped groove, when the driving plate 3 drives the unlocking plate 32 to rotate, the limiting piece 422 will move along the groove wall of the V-shaped groove in a direction away from the groove bottom, when the driving plate 3 rotates reversely, the limiting piece 422 will move along the groove wall of the V-shaped groove in a direction towards the groove bottom, when the limiting piece 422 is located at the groove bottom of the V-shaped groove, the two are in a matching state, the driving plate 3 is at the moment, the locking piece 421 is matched with the outer gear ring 52, the locking part 4 is in a locking state, and in this arrangement, the limiting piece 422 is always located in the V-shaped groove. The solution provided with the limiting groove 321 and the slideway 322 can reduce the groove width and the groove depth of the limiting groove 321, simplify the whole structure and reduce the processing requirement.
Specifically, in this embodiment, the fixing manner between the unlocking plate 32 and the driving plate 3 is not limited, for example, the unlocking plate 32 may be provided with a fixing protrusion, the driving plate 3 is provided with a fixing hole, the unlocking plate 32 is clamped between the driving plate 3 and the fixing cover 2, so that the axial position of the unlocking plate 32 cannot move, and the fixing protrusion and the fixing hole cooperate to limit the movement of the unlocking plate 32 between the driving plate 3 and the fixing cover 2, so as to realize the fixation between the unlocking plate 32 and the driving plate 3. Alternatively, the driving plate 3 may be provided with a fixing protrusion, the unlocking plate 32 may be provided with a fixing hole, or the unlocking plate 32 and the driving plate 3 may be directly welded and fixed.
In the above embodiment, the height adjuster further includes the baffle 9 fixed on the outer wall of the housing 1 and the torsion spring 8 sleeved on the housing 1, the driving plate 3 is provided with the baffle 31, both the baffle 9 and the baffle 31 are located between the two legs 81 of the torsion spring 8, the baffle 9 is fixed with the housing 1 and used for limiting the position of the torsion spring 8, the legs 81 of the torsion spring 8 are pushed to rotate and compress the torsion spring 8 after the driving plate 3 rotates, and when the acting force of the operating handle is withdrawn, the driving plate 3 rotates to the original position under the action of the torsion spring 8. The lock spring 41 is a leaf spring with the bottom fixed with the baffle 9, and the lock clamp 42 is clamped between the baffle 9 and the leaf spring, so that the top of the leaf spring has a trend of being tightly attached to the baffle 9 due to the fact that the bottom of the leaf spring is fixed with the baffle 9. Alternatively, in this embodiment, the locking spring 41 may be provided as a coil spring, one end of which is fixed to the housing 1 and the other end of which is fixed to the lock catch 42, and when the lock catch 42 moves to a side away from the housing 1 by the unlocking piece 32, the coil spring will be in a stretched state, and the restoring force of the coil spring will act on the lock catch 42 so as to have a tendency to be stuck to the side of the housing 1. The arrangement of the leaf spring can reduce the requirement on the installation space of the lock spring 41, and meanwhile, the lock clip 42 is clamped between the leaf spring and the baffle 9, so that the installation of the lock clip 42 can be stable.
Further, as shown in fig. 7, the locking portion 4 further includes a clamping groove 43, and the clamping groove 43 clamps the blocking piece 9 and the leaf spring from the bottom simultaneously, specifically, a groove structure adapted to the bottom end of the blocking piece 9 and the bottom end of the leaf spring respectively is provided in the clamping groove 43, and clamps and fixes the blocking piece 9 and the leaf spring together. Alternatively, as shown in fig. 8, the bottom of the leaf spring may be provided with a claw 411, and the claw 411 may be fixed to the bottom end of the blocking piece 9, and the locking clip 42 may be clamped between the leaf spring and the blocking piece 9. The provision of the catching groove 43 simplifies the mounting operation of the locking portion 4, and makes the mounting of the blocking piece 9 and the catching groove 43 more stable.
Furthermore, the bottom end of the blocking piece 9 is provided with a yielding gap 91 and a positioning hole 92 above the yielding gap 91, the lower part of the locking card 42 is provided with a positioning protrusion 423 adapted to the positioning hole 92, and the locking card 42 can rotate around the positioning protrusion 423 to enable the bottom end of the locking card 42 to pass through the yielding gap 91. When the unlocking piece 32 acts on the locking piece 42 to enable the top end of the locking piece 42 to move to the side far away from the shell 1, the locking piece 42 rotates around the positioning piece 423, the top pushes the spring piece to move to the side far away from the shell 1, and the bottom passes through the yielding notch 91, so that the locking effect of the locking portion 4 is prevented from being influenced by deformation of the locking piece 42, and peristaltic movement is prevented. In addition, the setting of location protruding 423 and locating hole 92 is convenient for this lock card 42's installation, simultaneously, because lock card 42 presss from both sides and locates between separation blade 9 and the locking spring 41, location protruding 423 and locating hole 92 are convenient for to this lock card 42 remembering the location and avoid taking place lock card 42 along the circumstances of upwards drunkenness between locking plate and the locking spring 41.
As shown in fig. 7, in this embodiment, the top end of the blocking piece 9 is provided with a limiting notch 93, meanwhile, the fixed cover 2 is also provided with a hole structure 21 corresponding to the limiting notch 93, the top end of the lock clip 42 is provided with the limiting piece 422 and the locking piece 421, and the locking piece 421 is located in the limiting notch 93 and can pass through the hole structure 21 to be matched with the outer gear ring 52. The limiting notch 93 can limit the locking piece 421, so as to avoid the situation that the locking piece 421 cannot be matched with the outer gear 52 due to the shifting of the locking piece 421 after multiple reciprocating movements.
In the above embodiment, as shown in fig. 10, the fixed cover 2 is provided with the shaped hole 22, the outer edge of the shaped hole 22 is an arc-shaped edge 221 opening toward one side of the center of the fixed cover 2, the two circumferential sides of the arc-shaped edge 221 are provided with extension holes 222 extending toward one side away from the center of the fixed cover 2, the first hinge point 62 passes through the shaped hole 22 and is hinged with the driving plate 3, and the pawls 6 are respectively provided with a side boss 64 at two sides of the first hinge point 62, and in the process of returning the driving plate 3 from the extreme position to the original position, the side bosses 64 can be abutted against the arc-shaped edge 221 and slide along the arc-shaped edge 221 to disengage the pawls 6 from the ring gear 51.
The outer edge of the shaped hole 22 refers to a hole edge of a side of the shaped hole 22 away from the center of the fixed cover 2, and specifically, the shaped hole 22 may be a fan-shaped hole or an arc-shaped hole, which is not limited herein. The first hinge point 62 of the pawl 6 can move in the special-shaped hole 22 to realize flexible hinge between the pawl 6 and the driving plate 3, the side boss 64 can move in the special-shaped hole 22, and when the driving plate 3 rotates to the limit position and in the process of returning to the original position, the pawl 6 is driven to rotate reversely, the pawl 6 rotates reversely around the second hinge point 63, so that the ratchet teeth 61 meshed with each other are separated from the inner gear ring 51, the ratchet teeth 61 on the other side of the pawl 6 have a tendency to mesh with the inner gear ring 51, but the side boss 64 on the same side as the ratchet teeth 61 with the meshing tendency is tightly adhered to the arc-shaped edge 221 and slides along the arc-shaped edge 221 to limit the rotation angle of the pawl 6, so that the ratchet teeth 61 of the pawl 6 are prevented from meshing with the inner gear ring 51. The ratchet teeth 61 on the two sides of the pawl 6 are kept in a separated state with the annular gear 51 until the driving plate 3 returns to the original position before the driving plate 3 returns to the original position, so that noise is not generated in the process of returning the driving plate 3 to the original position, and the comfort is good.
Alternatively, the shaped hole 22 may be understood as an arc-shaped hole or a fan-shaped hole provided in the fixed cover 2, and a hole edge of a side of the arc-shaped hole or the fan-shaped hole away from the center of the fixed cover 2 protrudes toward a side of the center of the fixed cover 2 to form the arc-shaped edge 221, and portions of both circumferential sides of the arc-shaped edge 221 form the extension hole 222. As shown in fig. 10, in the present embodiment, the extension hole 222 extends not only to a side far from the center of the fixed cover 2, but also outwardly in the circumferential direction, so that a sufficient space is provided for the rotation of the pawl 6, and at the same time, the sectional area of the shaped hole 22 can be reduced, thereby securing the strength of the fixed cover 2.
In the above embodiment, the height adjuster further includes the connecting piece 12, the connecting piece 12 is provided on the side of the fixed cover 2 away from the driving plate 3, the connecting piece 12 passes through the center of the fixed cover 2 and is fixed with the driving plate 3, thereby realizing the limitation of the driving plate 3 in the axial direction, so that the driving plate 3 can rotate relative to the fixed cover 2 and the two cannot be separated. Specifically, the center of the fixed cover 2 is provided with a center hole coaxial with the rotation axis 11 of the driving plate 3, the connecting piece 12 is provided with a sleeve, and the sleeve passes through the center hole and is welded and fixed with the driving plate 3.
In the above embodiment, the blocking piece 7 is further provided with an elastic member 71 capable of providing an axial supporting force, and specifically, the elastic member 71 may be provided as a coil spring or an elastic piece, which is not particularly limited herein. The elastic member 71 can provide an axial supporting force to the blocking tab 7 so that the lower surface of the blocking tab 7 abuts against the core member 10. Specifically, as shown in fig. 2, a connection structure connected with other driving structures of the core member 10 is provided in the middle of the ratchet wheel 5, an annular table surface is provided on the top end surface of the connection structure, and the annular table surface is tightly attached to the lower end surface of the blocking piece 7 and generates friction resistance in the rotation process, however, in this embodiment, the lower end surface of the blocking piece 7 may also be contacted with other parts of the core member 10 to generate friction resistance, which is not limited specifically herein. The elastic piece 71 can be arranged above the blocking piece 7, so that the upper end face of the elastic piece 71 is in contact with the lower end face of the fixed cover 2, the lower end face of the blocking piece 7 is in contact with the core piece 10, or the elastic piece 71 can be arranged below the blocking piece 7, the lower end face of the elastic piece 71 is in contact with the core piece 10, the upper end face of the blocking piece 7 is in contact with the lower end face of the fixed cover 2, and when the fixed cover 2 is installed, the elastic piece 71 of the blocking piece 7 can be preloaded from above, so that the blocking piece 7 can be in a preloaded state between the fixed cover 2 and the core piece 10 (the ratchet wheel 5), the fixed cover 2 and the core piece 10 can simultaneously provide friction resistance for the blocking piece 7 from the upper side and the lower side in the rotating process, so that the sufficient friction force is ensured, the blocking piece 7 can be prevented from being crushed, and the service life of the fixed piece 71 can be ensured.
Specifically, in this embodiment, the first hinge point 62 of the pawl 6 is hinged to the driving plate 3, and the hinged structure is not limited specifically, as shown in fig. 2 and 9, in this embodiment, the driving plate 3 is provided with a driving hole, the pawl 6 is provided with a driving boss, and the driving boss passes through the shaped hole 22 and is located in the driving hole, so that the rotation of the driving plate 3 can drive the pawl 6 to rotate. Or in this embodiment, the driving board 3 may be further provided with a driving boss, and the pawl 6 is provided with a driving hole, so that the rotation of the driving board 3 may drive the pawl 6 to rotate, which is not limited herein. Similarly, the pawl 6 is hinged to the blocking piece 7 through the second hinge point 63, specifically, as shown in fig. 9, the pawl 6 may be provided with a hinge hole, the blocking piece 7 may be provided with a hinge protrusion, and the hinge hole and the hinge protrusion cooperate to realize the hinge between the pawl 6 and the blocking piece 7, or the pawl 6 may be provided with a hinge protrusion, and the blocking piece 7 may be provided with a hinge hole, which is not particularly limited herein.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The height adjuster of the automobile seat is characterized by comprising a shell (1), a fixed cover (2), a driving part, a locking part (4) and a core piece (10) provided with a ratchet wheel (5), wherein the fixed cover (2) is fixedly arranged at the top end of the shell (1) and surrounds the top end to form a containing cavity, the core piece (10) is positioned in the containing cavity, and the ratchet wheel (5) is provided with an inner gear ring (51) and an outer gear ring (52);
The driving part comprises a driving plate (3) connected with an operating handle, a pawl (6) and a blocking piece (7) which are arranged in the accommodating cavity, the driving plate (3), the blocking piece (7) and the core piece (10) are coaxial, the driving plate (3) is rotatably connected with the fixed cover (2), the blocking piece (7) is clamped between the fixed cover (2) and the core piece (10), ratchets (61) are respectively arranged on two sides of the pawl (6), a first hinging point (62) of the pawl (6) is hinged with the driving plate (3), a second hinging point (63) of the pawl (6) is hinged with the blocking piece (7), and the rotation of the driving plate (3) can drive the pawl (6) to rotate around the second hinging point (63) so that the ratchets (61) on one side of the pawl (6) are meshed with or separated from the inner gear ring (51);
The locking part (4) comprises a lock spring (41) and a lock clamp (42) which is fixed relative to the shell (1) along the circumferential direction, the lock clamp (42) comprises a lock block (421) which can be matched with the outer gear (52) under the action of the lock spring (41), the driving plate (3) is further provided with an unlocking plate (32), and the rotation of the driving plate (3) can act on the lock clamp (42) through the unlocking plate (32) so as to enable the lock block (421) to be matched with or separated from the outer gear (52).
2. The height adjuster of the car seat according to claim 1, characterized in that the unlocking piece (32) is provided with a slide way (322) and a limit groove (321) which is arranged on the slide way (322), the lock clip (42) further comprises a limit piece (422), when the limit piece (422) is matched with the limit groove (321), the lock piece (421) is matched with the outer gear (52), and when the limit piece (422) slides along the slide way (322), the lock piece (421) is separated from the outer gear (52);
The unlocking piece (32) can be driven to rotate by the rotation of the driving plate (3) so that the limiting piece (422) slides to the slideway (322) along the inner wall of the limiting groove (321) and slides along the slideway (322).
3. The height adjuster of the automobile seat according to claim 2, further comprising a baffle plate (9) fixedly arranged on the outer wall of the shell (1) and a torsion spring (8) sleeved on the shell (1), wherein the driving plate (3) is provided with a baffle plate (31), and the baffle plate (9) and the baffle plate (31) are both positioned between two supporting legs (81) of the torsion spring (8);
The lock spring (41) is a leaf spring with the bottom fixed with the baffle plate (9), and the lock clamp (42) is clamped between the baffle plate (9) and the leaf spring.
4. A height adjuster for a car seat according to claim 3, characterized in that the locking part (4) further comprises a catch (43), which catch (43) grips both the flap (9) and the leaf spring from the bottom.
5. The height adjuster of the car seat according to claim 4, characterized in that a relief notch (91) and a positioning hole (92) arranged above the relief notch (91) are arranged at the bottom end of the baffle (9), a positioning protrusion (423) matched with the positioning hole (92) is arranged at the lower part of the lock card (42), and the lock card (42) can rotate around the positioning protrusion (423) to enable the bottom end of the lock card (42) to pass through the relief notch (91).
6. The height adjuster of the automobile seat according to claim 4, characterized in that a limit notch (93) is arranged at the top end of the baffle (9), and the fixed cover (2) is provided with a hole structure (21) corresponding to the limit notch (93);
The locking piece (421) is located in the limiting notch (93) and can penetrate through the hole structure (21) to be matched with the outer gear ring (52).
7. The height adjuster of a car seat according to any one of claims 1-6, characterized in that the fixed cover (2) is provided with a profiled hole (22), the outer edge of the profiled hole (22) is an arc-shaped edge (221) opening towards the center of the fixed cover (2), the circumferential sides of the arc-shaped edge (221) are provided with extension holes (222) extending to one side away from the center of the fixed cover (2);
The first hinge point (62) passes through the special-shaped hole (22) and is hinged with the driving plate (3), the pawl (6) is respectively provided with a side boss (64) at two sides of the first hinge point (62), the driving plate (3) returns to the original position in-process, and the side boss (64) can be tightly attached to the arc-shaped edge (221) and slide along the arc-shaped edge (221), so that the ratchet teeth (61) are separated from the inner gear ring (51).
8. The height adjuster according to any one of claims 1-6, further comprising a connecting piece (12) provided on a side of the fixed cover (2) remote from the drive plate (3), the connecting piece (12) passing through a center of the fixed cover (2) and being fixed with the drive plate (3).
9. A height adjuster for a motor vehicle seat according to any one of claims 1-6, characterized in that the blocking tab (7) is further provided with an elastic element (71) capable of providing an axial supporting force.
10. An automotive seat comprising a height adjuster according to any one of claims 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818293.7A CN110395150B (en) | 2019-08-30 | 2019-08-30 | Automobile seat and height adjuster thereof |
| PCT/CN2019/106903 WO2021035844A1 (en) | 2019-08-30 | 2019-09-20 | Car seat and height adjustment mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818293.7A CN110395150B (en) | 2019-08-30 | 2019-08-30 | Automobile seat and height adjuster thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110395150A CN110395150A (en) | 2019-11-01 |
| CN110395150B true CN110395150B (en) | 2024-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910818293.7A Active CN110395150B (en) | 2019-08-30 | 2019-08-30 | Automobile seat and height adjuster thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110395150B (en) |
| WO (1) | WO2021035844A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721752B (en) * | 2020-07-21 | 2023-03-14 | 恺博(常熟)座椅机械部件有限公司 | Locking mechanism of manual height adjusting device of automobile seat |
| CN114347883B (en) * | 2022-03-16 | 2022-07-01 | 宁波惠尔顿婴童安全科技股份有限公司 | Child safety seat with rotating mechanism |
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| CN210283989U (en) * | 2019-08-30 | 2020-04-10 | 湖北航嘉麦格纳座椅***有限公司 | Automobile seat and height adjuster thereof |
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| CN210283989U (en) * | 2019-08-30 | 2020-04-10 | 湖北航嘉麦格纳座椅***有限公司 | Automobile seat and height adjuster thereof |
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| Publication number | Publication date |
|---|---|
| CN110395150A (en) | 2019-11-01 |
| WO2021035844A1 (en) | 2021-03-04 |
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Effective date of registration: 20210118 Address after: 441000 No.8, zhuiri Road, Xiangyang hi tech Zone, Xiangyang City, Hubei Province Applicant after: HUBEI AVIATION PRECISION MACHINERY TECHNOLOGY Co.,Ltd. Address before: 441003 No.8, zhuiri Road, Xiangyang City, Hubei Province Applicant before: HUBEI HAPM MAGNA SEATING SYSTEMS Co.,Ltd. |
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