CN210283989U - Automobile seat and height adjuster thereof - Google Patents

Abstract

The utility model 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 part 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 inner gear ring; the locking part comprises a locking spring and a locking clamp which is relatively fixed with the shell along the circumferential direction, the locking clamp comprises a locking block which can be matched with the outer gear ring under the action of the locking spring, the driving plate is also provided with an unlocking sheet, and the rotation of the driving plate can act on the locking clamp through the unlocking sheet to enable the locking block to be matched with or separated from the outer gear ring. The height of the automobile seat can be prevented from changing due to the creeping of the core piece in the using process, and the comfort of the automobile seat is ensured.

Description

Automobile seat and height adjuster thereof

Technical Field

The utility model relates to a vehicle car seat technical field, concretely relates to car seat and altitude controller thereof.

Background

The automobile seat can be adjusted in height through the lifting mechanism so as to meet the comfortable riding requirements of different users, the lifting mechanism comprises a height adjuster, an automobile seat toothed plate and other components, the height adjuster is used for controlling the lifting function of the automobile seat and keeping the height of the adjusted automobile seat, and the height adjuster is composed of a driving part and a core part.

When the automobile seat is used, the core part can creep (slowly rotate) under the action of alternating load, the creep of the core part can finally cause the height of the automobile seat to be changed, and a user needs to readjust the height of the automobile seat after a period of time to ensure the comfort of the automobile seat.

Therefore, how to prevent the height of the car seat from changing due to the creeping of the core piece during the use process and ensure the comfort of the car seat is a technical problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a car seat and altitude controller thereof can prevent to make car seat's high emergence change because the wriggling of core spare in the use, guarantees car seat's travelling comfort.

In order to solve the technical problem, the utility model 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 encloses to form an accommodating cavity, the core piece is positioned in the accommodating 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 an operating handle, and a pawl and a blocking piece which 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 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 rotation of 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 inner gear ring; the locking part comprises a locking spring and a locking clamp which is fixed relative to the shell along the circumferential direction, the locking clamp comprises a locking block which can be matched with the outer gear ring under the action of the locking spring, the driving plate is further provided with an unlocking plate, and the rotation of the driving plate can act on the locking clamp through the unlocking plate so that the locking block is matched with or separated from the outer gear ring.

The lock spring can provide elastic force and act on the lock clamp to enable the lock block of the lock clamp to be matched with the outer gear ring of the ratchet wheel, therefore, 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 lock block of the lock clamp is matched with the outer gear ring, and as the lock clamp and the shell are relatively fixed in the circumferential direction, when the core piece of the height adjuster rotates due to the influence of alternating load, the ratchet wheel can be driven to rotate, the rotation of the ratchet wheel is transmitted to the shell through the lock clamp, and the shell is fixed, so that the rotation of the ratchet wheel is restrained, the rotation of the core piece and the rotation of the automobile seat are limited, the anti-creep effect is achieved, and the seat can be prevented from sinking.

When the height of the automobile seat needs to be adjusted, the driving plate rotates under the driving of the operating handle, the unlocking piece acts on the lock clamp to enable the lock block to be separated from the outer gear ring, at the moment, the locking portion is in an unlocking state, the height of the automobile seat can be adjusted through rotation of the operating handle (the driving plate), after the position is adjusted, the operating handle (the driving plate) returns to the original position, the lock block is matched with the outer gear ring again to achieve locking, and the height of the automobile seat is prevented from changing in the using process.

This altitude controller can realize carrying out two-way drive to car seat's high position and adjust, and simultaneously, sticking department simple structure can realize in the use, restricts the wriggling of core spare to make car seat can keep comparatively comfortable height, and then guarantee car seat's travelling comfort.

Optionally, the unlocking plate is provided with a slideway and a limiting groove arranged in the slideway, the lock clamp further comprises a limiting piece, when the limiting piece is matched with the limiting groove, the lock piece is matched with the outer gear ring, and when the limiting piece slides along the slideway, the lock piece is separated from the outer gear ring; the rotation of drive plate can drive the unblock piece rotates so that the locating part along the inner wall of spacing groove slides extremely the slide and follow the slide slides.

Optionally, the device further comprises a baffle fixed on the outer wall of the shell and a torsion spring sleeved on the shell, the driving plate is provided with a baffle, and the baffle are both located between two support legs of the torsion spring; the lock spring is a leaf spring with the bottom fixed to the separation blade, and the lock clamp is arranged between the separation blade and the leaf spring.

Optionally, the locking portion further includes a catch that simultaneously catches the catch and the leaf spring from the bottom.

Optionally, the bottom of separation blade is equipped with the breach of stepping down and locates the locating hole of the breach top of stepping down, the lower part of lock card be equipped with the location of locating hole looks adaptation is protruding, just the lock card can wind protruding the rotation of location makes the bottom of lock card passes the breach of stepping down.

Optionally, a limiting notch is formed in the top end of the blocking piece, and a hole structure corresponding to the limiting notch is formed in the fixing cover; the locking block is positioned in the limiting notch and can pass through the hole structure to be matched with the outer gear ring.

Optionally, the fixed cover is provided with a special-shaped hole, an outer edge of the special-shaped hole is an arc-shaped edge with an opening facing the center of the fixed cover, and two circumferential sides of the arc-shaped edge are provided with extending holes extending to one side away from the center of the fixed cover; the first hinge point penetrates through the special-shaped hole and is hinged to the driving plate, side bosses are arranged on two sides of the first hinge point of the pawl respectively, and the side bosses can cling to the arc-shaped edge and slide along the arc-shaped edge when the driving plate returns to the original position, so that the ratchet is separated from the inner gear ring.

Optionally, the fixing cover further comprises a connecting sheet, the connecting sheet is arranged on one side, away from the driving plate, of the fixing cover, and the connecting sheet penetrates through the center of the fixing 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 utility model also provides a car seat, it includes as above the altitude controller.

The technical effect of the car seat with the height adjuster is similar to that of the height adjuster, and is not repeated herein for saving space.

Drawings

Fig. 1 is a schematic structural diagram of a height adjuster of 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 locking piece engaged 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 view of the structure of the limiting member and the limiting groove;

FIG. 6 is a schematic structural view of the limiting member sliding along the slide way;

fig. 7 is an exploded view of the locking portion and the shutter of the first structure;

FIG. 8 is a structural schematic view of the height adjuster having a second configuration of the locking portion;

FIG. 9 is a schematic view of the pawl construction;

fig. 10 is a schematic structural view of the stationary cover.

In the accompanying fig. 1-10, the reference numerals are illustrated as follows:

1-a shell;

2-fixed cover, 21-hole structure, 22-special-shaped hole, 221-arc edge, 222-extension hole;

3-a driving plate, 31-a baffle, 32-an unlocking sheet, 321-a limiting groove and 322-a slideway;

4-locking part, 41-locking spring, 411-claw, 42-locking card, 421-locking block, 422-limiting piece, 423-positioning projection and 43-clamping groove;

5-ratchet wheel, 51-inner gear ring, 52-outer gear ring;

6-pawl, 61-ratchet, 62-first hinge point, 63-second hinge point, 64-side boss;

7-a retarder, 71-an elastic member;

8-torsion spring, 81-leg;

9-a blocking piece, 91-an abdication gap, 92-a positioning hole and 93-a limiting gap;

10-a core piece;

11-a rotating shaft;

12-connecting piece.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, 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 diagram of a height adjuster of 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 locking piece engaged 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 view of the structure of the limiting member and the limiting groove; FIG. 6 is a schematic structural view of the limiting member sliding along the slide way; fig. 7 is an exploded view of the locking portion and the shutter of the first structure; FIG. 8 is a structural schematic view of the height adjuster having a second configuration of the locking portion; FIG. 9 is a schematic view of the pawl construction; fig. 10 is a schematic structural view of the stationary cover.

An embodiment of the utility model provides a car seat and altitude controller thereof, wherein, car seat includes above-mentioned altitude controller, and altitude controller is used for adjusting car seat's height to make car seat can satisfy user's high demand, improve user's travelling comfort.

Specifically, as shown in fig. 1 and 2, the height adjuster includes a housing 1, a fixing cover 2, a driving part, a locking part 4, and a core 10, wherein the fixing cover 2 is fixedly disposed at a top end of the housing 1 and encloses the housing 1 to form a housing cavity, the core 10 is disposed in the housing cavity, the core 10 is provided with a ratchet 5, and the ratchet 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, wherein the pawl 6 and the blocking piece 7 are arranged in the accommodating cavity, and the driving plate 3, the blocking piece 7 and the core 10 are coaxially arranged. Specifically, the driving plate 3 is connected with the operating handle, 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 10, the two sides of the pawl 6 are respectively provided with a ratchet 61 matched with the inner gear ring 51, the pawl 6 comprises a first hinge point 62 and a second hinge point 63, wherein 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 arranged, and the second hinge point 63 is not coaxially arranged with the rotation axis of the blocking piece 7 (i.e., the axis of the driving plate 3, the fixed cover 2, the blocking piece 7 and the core 10), so that the driving plate 3 hinged with the first hinge point 62 can rotate the pawl 6 when rotating.

The blocking sheet 7 is clamped between the fixed cover 2 and the core 10, when the driving plate 3 drives the ratchet 5 to rotate, the ratchet 5 can drive the blocking sheet 7 to generate a tendency of rotation through the second hinge point 63, and since the blocking sheet 7 is clamped between the fixed cover 2 and the core 10, the blocking sheet 7 is blocked from rotating due to the effect of friction resistance when rotating relative to the core 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 effect (frictional resistance) of the blocking piece 7, and then the ratchet 61 on one side of the pawl 6 is meshed with the inner gear ring 51, and when the operating handle returns, the driving plate 3 rotates reversely and returns (namely rotates reversely to the initial position and the middle position of the rotation interval of the driving plate 3 relative to the housing 1), and at the moment, the reverse rotation of the driving plate 3 drives the pawl 6 to rotate reversely around the second hinge point 63 until the ratchet 61 is separated from the inner gear ring 51.

The ratchet teeth 61 are respectively arranged on both sides of the pawl 6, that is, the driving plate 3 rotates in both 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 hinge point 63 until the ratchet teeth 61 are engaged with the inner gear ring 51, so that the bidirectional driving of the height adjuster can be realized. Of course, in the present embodiment, only one of the ratchet teeth 61 on both sides of the pawl 6 can be engaged with the ring gear 51 at most at the same time.

The locking part 4 comprises a locking spring 41 and a locking clip 42, wherein the locking clip 42 is fixed relative to the housing 1 along the circumferential direction, the locking clip 42 comprises a locking piece 421 matched with the outer gear ring 52, the locking clip 42 is matched with the outer gear ring 52 under the action of the locking spring 41 to limit the rotation of the ratchet wheel 5, the driving plate 3 is also provided with an unlocking piece 32, and the rotation of the driving plate 3 can act on the locking clip 42 through the unlocking piece 32 to enable the locking 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 to make the locking piece 421 of the locking clip 42 engage with the outer gear ring 52 of the ratchet 5, so that, after 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 engages with the outer gear ring 52, and since the locking clip 42 and the housing 1 are relatively fixed in the circumferential direction, when the core 10 of the height adjuster rotates due to the influence of alternating load, the ratchet 5 is driven to rotate, and the rotation of the ratchet 5 is transmitted to the housing 1 by the locking clip 42, and since the housing 1 is fixed, the rotation of the ratchet 5 is restricted, so that the rotation of the core 10 and the car seat is limited, thereby 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 is driven by the operating handle to rotate, the unlocking plate 32 acts on the locking clamp 42 to enable the locking block 421 to be separated from the outer gear ring 52, at the moment, the locking portion 4 is in an unlocking state, the height of the automobile seat can be adjusted through rotation of the operating handle (the driving plate 3), after the position is adjusted, the operating handle (the driving plate 3) returns to the original position, the locking block 421 is matched with the outer gear ring 52 again to achieve locking, and the height of the automobile seat is prevented from being changed in the using process.

The altitude controller in this embodiment can realize carrying out two-way drive to the high position of car seat and adjust, and simultaneously, locking part 4 simple structure can realize in the use, restricts the wriggling 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 10 is provided with a rotating shaft 11, and the retardation plate 7, the fixing cover 2 and the driving plate 3 are sequentially sleeved on the rotating shaft 11, so as to achieve coaxial arrangement among the core 10, the retardation plate 7, the fixing cover 2 and the driving plate 3.

In the above embodiment, the unlocking piece 32 is provided with the slide rail 322 and the limiting groove 321 opened in the slide rail 322, the locking clip 42 includes 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 matched with the outer gear ring 52 of the ratchet 5 to lock the locking portion 4, the rotation of the ratchet 5 is limited, when the limiting piece 422 slides along the slide rail 322, the locking piece 421 is separated from the outer gear ring 52, the locking portion 4 is unlocked, and the rotation of the ratchet 5 is no longer limited. When the driving plate 3 rotates under the action of the operating handle, the unlocking sheet 32 can be driven to rotate, so that the limiting member 422 can push the lock spring 41 and cling to the groove wall of the limiting groove 321 under the action of the elastic force of the lock spring 41, 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 member 422 moves reversely along the slide way 322, and when the driving plate 3 returns to the original position, the limiting member 422 slides into the limiting groove 321 along the slide way 322 to engage with the limiting groove, and the lock block 421 engages with the outer ring gear 52, that is, the locking portion 4 is in the locking state (as shown in fig. 3 and 5).

The arrangement enables the whole structure of the locking part 4 to be simple, the locking and unlocking processes of the locking part 4 can be realized only by rotating the driving plate 3, and extra operation is not 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 member 422 may be a structure with a V-shaped cross section and protruding outward, the limiting groove 321 may be a structure with a V-shaped groove or a U-shaped groove, and the like, and the end surface of the limiting groove 321 is in smooth transition, and the sliding way 322 may be a sliding groove or an arc surface on the side surface of the unlocking piece 32.

Or, in this embodiment, the structure of the unlocking sheet 32 is not limited, if the structure of the limiting groove 321 can also be set to be a V-shaped groove, when the driving plate 3 drives the unlocking sheet 32 to rotate, the limiting member 422 will move along the groove wall of the V-shaped groove toward the direction away from the groove bottom, and when the driving plate 3 rotates reversely, the limiting member 422 will move along the groove wall of the V-shaped groove toward the groove bottom, when the limiting member 422 is located at the groove bottom of the V-shaped groove, the two are in a matching state, at this time, the driving plate 3 is in a home position, the locking piece 421 matches with the outer gear ring 52, and the locking portion 4 is in a locking state, and with this setting, the. The scheme of arranging the limiting groove 321 and the slide 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 sheet 32 and the driving plate 3 is not limited, for example, the unlocking sheet 32 may be provided with a fixing protrusion, the driving plate 3 is provided with a fixing hole, the unlocking sheet 32 is clamped between the driving plate 3 and the fixing cover 2, so that the axial position of the unlocking sheet does not move, and the fixing protrusion and the fixing hole are matched to limit the unlocking sheet 32 to move between the driving plate 3 and the fixing cover 2, thereby fixing the unlocking sheet 32 and the driving plate 3. Or, the driving plate 3 may be provided with a fixing protrusion, and the unlocking piece 32 may be provided with a fixing hole, or the unlocking piece 32 and the driving plate 3 may be directly welded and fixed.

In the above embodiment, the height adjuster further comprises a baffle plate 9 fixedly arranged on the outer wall of the casing 1 and a torsion spring 8 sleeved on the casing 1, the driving plate 3 is provided with a baffle plate 31, the baffle plate 9 and the baffle plate 31 are both positioned between two support legs 81 of the torsion spring 8, the baffle plate 9 is fixed with the casing 1 and used for limiting the position of the torsion spring 8, the support legs 81 pushing the torsion spring 8 rotate and compress the torsion spring 8 after the driving plate 3 rotates, and after 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 whose bottom is fixed to the stopper 9, and the lock clip 42 is interposed between the stopper 9 and the leaf spring, and the bottom of the leaf spring is fixed to the stopper 9, so that the top of the leaf spring tends to be close to the stopper 9. Alternatively, in this embodiment, the locking spring 41 may be a coil spring, one end of which is fixed to the housing 1 and the other end of which is fixed to the locking clip 42, and when the locking clip 42 moves away from the housing 1 under the action of the unlocking sheet 32, the coil spring will be in a stretching state, and the restoring force of the coil spring will act on the locking clip 42 to make it have a tendency to cling to one side of the housing 1. The provision of the leaf spring can reduce the requirement for the installation space of the lock spring 41, and the lock clip 42 is interposed between the leaf spring and the stopper piece 9, so that the installation of the lock clip 42 can be stabilized.

Further, as shown in fig. 7, the locking portion 4 further includes a locking groove 43, the locking groove 43 simultaneously locks the blocking piece 9 and the leaf spring from the bottom, specifically, a groove structure respectively matching with the bottom end of the blocking piece 9 and the bottom end of the leaf spring is provided in the locking groove 43, and the blocking piece 9 and the leaf spring are clamped and fixed together. Alternatively, in this embodiment, as shown in fig. 8, the bottom of the leaf spring may be provided with a claw 411, the claw 411 is fixed to the bottom end of the blocking piece 9, and the locking clip 42 is 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 also makes it possible to more stably mount the shutter 9 and the catching groove 43.

Furthermore, the bottom end of the blocking piece 9 is provided with an abdicating notch 91 and a positioning hole 92 arranged above the abdicating notch 91, the lower portion of the locking clip 42 is provided with a positioning protrusion 423 matched with the positioning hole 92, and the locking clip 42 can rotate around the positioning protrusion 423 to enable the bottom end of the locking clip 42 to pass through the abdicating notch 91. The positioning protrusion 423 is equivalent to a pivot, when the unlocking piece 32 acts on the locking clip 42 to move the top end of the locking clip 42 to the side far from the housing 1, the locking clip 42 rotates around the positioning protrusion 423, the top portion pushes the spring piece to move to the side far from the housing 1, and the bottom portion passes through the abdicating notch 91, so that the locking clip 42 is prevented from deforming to affect the locking effect of the locking portion 4, thereby preventing the creeping. In addition, the positioning projections 423 and the positioning holes 92 are provided to facilitate the installation of the locking clip 42, and at the same time, since the locking clip 42 is sandwiched between the blocking piece 9 and the bolts 41, the positioning projections 423 and the positioning holes 92 facilitate the temporary positioning of the locking clip 42 to avoid the situation that the locking clip 42 moves upwards along the space between the locking piece and the bolts 41.

As shown in fig. 7, in the present embodiment, the top end of the blocking plate 9 is provided with a limiting notch 93, meanwhile, the fixing cover 2 is also provided with a hole structure 21 corresponding to the limiting notch 93, the top end of the locking clip 42 is provided with the above-mentioned limiting member 422 and the locking block 421, and the locking block 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 lock block 421, and the situation that the lock block 421 cannot be matched with the outer gear ring 52 due to shifting after reciprocating movement for many times is avoided.

In the above embodiment, as shown in fig. 10, the fixing cover 2 is provided with the shaped hole 22, the outer edge of the shaped hole 22 is an arc-shaped edge 221 opening to one side of the center of the fixing cover 2, two circumferential sides of the arc-shaped edge 221 are provided with extending holes 222 extending to one side away from the center of the fixing cover 2, the first hinge point 62 passes through the shaped hole 22 and is hinged to the driving plate 3, the pawls 6 are respectively provided with one side boss 64 on two sides of the first hinge point 62, and during the process of returning the driving plate 3 from the limit position to the home position, the side bosses 64 can abut against the arc-shaped edge 221 and slide along the arc-shaped edge 221, so that the pawls 6 are disengaged from the ring gear 51.

The outer edge of the special-shaped hole 22 refers to the edge of the special-shaped hole 22 on the side away from the center of the fixed cover 2, specifically, the special-shaped hole 22 may be a fan-shaped hole or an arc-shaped hole, and is not limited specifically herein. The first hinge point 62 of the pawl 6 can move in the shaped hole 22 to realize flexible hinge joint with the driving plate 3, the side lug boss 64 can move in the shaped hole 22, when the driving plate 3 rotates to the limit position and drives the pawl 6 to rotate reversely in the process of returning to the original position, the pawl 6 rotates reversely around the second hinge point 63 firstly so that the engaged ratchet teeth 61 are disengaged from the inner gear ring 51, the ratchet teeth 61 on the other side of the pawl 6 have the tendency of engaging with the inner gear ring 51, but the side lug boss 64 on the same side of the ratchet teeth 61 with the engagement tendency is abutted against 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 being engaged with the inner gear ring 51. Before the drive plate 3 returns to the original position, the ratchets 61 on the two sides of the pawl 6 and the inner gear ring 51 are kept in a separated state until the drive plate 3 returns to the original position, so that noise is not generated in the process of returning the drive 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, a hole edge on a side of the arc-shaped hole or the fan-shaped hole away from the center of the fixed cover 2 may be protruded toward a side of the center of the fixed cover 2 to form the arc-shaped edge 221, and portions on both sides of the arc-shaped edge 221 in the circumferential direction may form the extending hole 222. As shown in fig. 10, in the present embodiment, the extending hole 222 not only extends to a side away from the center of the fixing cover 2, but also extends outward in the circumferential direction, so that the sectional area of the shaped hole 22 can be reduced while providing a sufficient space for the rotation of the pawl 6, and the strength of the fixing cover 2 can be ensured.

In the above embodiment, the height adjuster further includes a connecting piece 12, the connecting piece 12 is disposed on a side of the fixing cover 2 away from the driving plate 3, and the connecting piece 12 passes through a center of the fixing cover 2 and is fixed to the driving plate 3, so that the driving plate 3 is limited in the axial direction, so that the driving plate 3 can rotate relative to the fixing cover 2 and cannot be separated from the fixing cover 2. Specifically, the center of the fixed cover 2 is provided with a center hole which is coaxial with the rotation axis 11 of the drive plate 3, and the connecting piece 12 is provided with a sleeve which passes through the center hole and is welded and fixed with the drive plate 3.

In the above embodiment, the blocking plate 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 plate, which is not particularly limited herein. The elastic member 71 can provide an axial supporting force for the retardation plate 7 to make the lower surface of the retardation plate 7 abut against the core member 10. Specifically, as shown in fig. 2, the middle of the ratchet 5 is provided with a connecting structure connected with other driving structures of the core 10, the top end face of the connecting structure is provided with an annular table, and the lower end face of the blocking piece 7 is tightly attached to the annular table and generates frictional resistance during rotation, but in this embodiment, the lower end face of the blocking piece 7 may also be in contact with other parts of the core 10 to generate frictional resistance, and the invention is not limited in particular. The elastic member 71 may be disposed above the stopper 7 such that an upper end surface of the elastic member 71 is in contact with a lower end surface of the fixing cap 2, a lower end surface of the stopper 7 is in contact with the core member 10, alternatively, the elastic member 71 may be provided below the stopper 7, the lower end surface of the elastic member 71 may contact the core 10, the upper end surface of the stopper 7 may contact the lower end surface of the fixed cover 2, and the fixed cover 2 may preload the elastic member 71 of the stopper 7 from above during mounting, so that the blocking piece 7 can be in a pre-pressing state between the fixed cover 2 and the core piece 10 (ratchet wheel 5), and during the rotation of the ratchet wheel 5, the stationary cover 2 and the core 10 can provide frictional resistance to the resistive patch 7 from both the upper and lower sides, thereby ensuring sufficient frictional force, the elastic member 71 can prevent the blocking piece 7 from being crushed, and the service life of the blocking piece is ensured.

Specifically, in this embodiment, the first hinge point 62 of the pawl 6 is hinged to the driving plate 3, and the structure of the hinge is not particularly limited, 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 is located in the driving hole after passing through the special-shaped hole 22, so that the pawl 6 can be driven to rotate by the rotation of the driving plate 3. Or, in this embodiment, the driving plate 3 may further be provided with a driving boss, and the pawl 6 is provided with a driving hole, so that the rotation of the driving plate 3 may drive the pawl 6 to rotate, which is not limited herein. Similarly, the pawl 6 is hinged to the blocking plate 7 through the second hinge point 63, specifically, as shown in fig. 9, the pawl 6 is provided with a hinge hole, the blocking plate 7 is provided with a hinge protrusion, the hinge hole and the hinge protrusion cooperate to realize the hinge between the pawl 6 and the blocking plate 7, or the pawl 6 is also provided with a hinge protrusion, and the blocking plate 7 is provided with a hinge hole, which is not limited herein.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection 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 part (10) provided with a ratchet wheel (5), wherein the fixed cover (2) is fixedly arranged at the top end of the shell (1) and encloses to form an accommodating cavity, the core part (10) is positioned in the accommodating 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 the operating handle, a pawl (6) and a blocking piece (7) which are arranged in the accommodating cavity, the drive plate (3), the damping sheet (7) and the core (10) being coaxial, the driving plate (3) is rotatably connected with the fixed cover (2), the blocking sheet (7) is clamped between the fixed cover (2) and the core member (10), ratchets (61) are respectively arranged on two sides of the pawl (6), a first hinge point (62) of the pawl (6) is hinged with the driving plate (3), the second hinge point (63) of the pawl (6) is hinged with the block sheet (7), the rotation of the driving plate (3) can drive the pawl (6) to rotate around the second hinge point (63) so that the ratchet teeth (61) on one side of the pawl (6) are engaged with or disengaged from the inner gear ring (51);

the locking portion (4) comprises a locking spring (41) and a locking clamp (42) which is fixed relative to the shell (1) along the circumferential direction, the locking clamp (42) comprises a locking piece (421) which can be matched with the outer gear ring (52) under the action of the locking spring (41), the driving plate (3) is further provided with an unlocking piece (32), and the rotation of the driving plate (3) can act on the locking clamp (42) through the unlocking piece (32) so that the locking piece (421) is matched with or separated from the outer gear ring (52).

2. The height adjuster of the car seat according to claim 1, wherein the unlocking plate (32) is provided with a slide (322) and a limiting groove (321) provided in the slide (322), the lock catch (42) further comprises a limiting member (422), when the limiting member (422) is engaged with the limiting groove (321), the lock block (421) is engaged with the outer ring gear (52), and when the limiting member (422) slides along the slide (322), the lock block (421) is disengaged from the outer ring gear (52);

the rotation of drive plate (3) can drive unlocking sheet (32) rotate so that locating part (422) are followed the inner wall of spacing groove (321) slides extremely slide (322) and follow slide (322) slide.

3. The height adjuster of the car seat is characterized by 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 support legs (81) of the torsion spring (8);

the lock spring (41) is a leaf spring with the bottom fixed with the blocking piece (9), and the lock clamp (42) is clamped between the blocking piece (9) and the leaf spring.

4. The height adjuster of an automobile seat according to claim 3, wherein the locking portion (4) further comprises a catching groove (43), the catching groove (43) simultaneously catching the shutter (9) and the leaf spring from the bottom.

5. The height adjuster of the car seat according to claim 4, wherein the bottom end of the blocking piece (9) is provided with a yielding notch (91) and a positioning hole (92) arranged above the yielding notch (91), the lower portion of the lock catch (42) is provided with a positioning protrusion (423) matched with the positioning hole (92), and the lock catch (42) can rotate around the positioning protrusion (423) to enable the bottom end of the lock catch (42) to pass through the yielding notch (91).

6. The height adjuster of a vehicle seat according to claim 4, characterized in that the top end of the catch (9) is provided with a limit notch (93), and the stationary cover (2) is provided with a hole structure (21) corresponding to the limit notch (93);

the locking block (421) is positioned 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 an automobile seat according to any one of claims 1 to 6, wherein the stationary cover (2) is provided with a shaped hole (22), an outer edge of the shaped hole (22) is an arc-shaped edge (221) opening toward a center of the stationary cover (2), and both circumferential sides of the arc-shaped edge (221) are provided with extension holes (222) extending to a side away from the center of the stationary cover (2);

the first hinge point (62) penetrates through the special-shaped hole (22) and is hinged with the driving plate (3), the pawl (6) is provided with a side boss (64) on each of two sides of the first hinge point (62), and in the process that the driving plate (3) returns to the original position, the side bosses (64) can cling to the arc-shaped edge (221) and slide along the arc-shaped edge (221) so that the ratchet (61) is separated from the inner gear ring (51).

8. The height adjuster of an automobile seat according to any one of claims 1 to 6, further comprising a connecting piece (12) provided on a side of the fixing cover (2) remote from the driving plate (3), the connecting piece (12) passing through a center of the fixing cover (2) and being fixed to the driving plate (3).

9. A height adjuster according to any one of claims 1 to 6, wherein the blocking piece (7) is further provided with a resilient member (71) capable of providing an axial supporting force.

10. A car seat, characterized by comprising a height adjuster according to any one of claims 1-9.

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