CN219564849U - Seat height adjuster and seat height adjusting device - Google Patents
Seat height adjuster and seat height adjusting device Download PDFInfo
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- CN219564849U CN219564849U CN202320424448.0U CN202320424448U CN219564849U CN 219564849 U CN219564849 U CN 219564849U CN 202320424448 U CN202320424448 U CN 202320424448U CN 219564849 U CN219564849 U CN 219564849U
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- seat height
- limit
- slider
- height adjuster
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Abstract
The utility model discloses a seat height adjuster and a seat height adjusting device, wherein the seat height adjuster comprises a speed reducing unit and an outer shell (2), the speed reducing unit comprises a sliding block (522), limiting protrusions (522 a) are arranged at two ends of the sliding block (522) in a first direction, the limiting protrusions (522 a) at each end are more than two and distributed at intervals along a second direction, an installation groove (2 a) is formed in the outer shell (2), limiting portions (2 a 1) are arranged at two ends of the installation groove (2 a) in the first direction, the limiting portions (2 a 1) at each end are more than two and distributed at intervals along the second direction, the sliding block (522) is located in the installation groove (2 a) in an installation state, the limiting protrusions (522 a) are located in the limiting portions (2 a 1), the sliding block (522) can only move along the first direction, and the first direction and the second direction are perpendicular to each other. The utility model increases the bearing area of the outer shell (2), avoids the failure of the outer shell (2), and reduces noise.
Description
Technical Field
The utility model relates to the technical field of seats, in particular to a seat height adjuster and a seat height adjusting device.
Background
The lifting function of the automobile seat can provide comfortable riding experience for different users, the seat height adjuster is used for realizing lifting of the seat, in the prior art, the seat height adjuster shell is made of plastic materials, and the automobile seat has the advantages of low cost and light weight, but the strength of the seat height adjuster shell is relatively low, and the seat height adjuster shell can be broken and lose efficacy when being subjected to impact load or high torque static load of about 200Nm, so that the automobile seat has a great threat to the safety of passengers.
The prior art generally adopts a mode of arranging a metal stop block, and the metal stop block and the shell bear the load together, but the noise problem is also brought along with the metal stop block, so that the riding comfort of passengers is affected.
Disclosure of Invention
The utility model aims to provide a seat height adjuster, which can avoid stress concentration and crushing failure of an outer shell, improve the strength and durability of a product, improve the riding safety of a seat, and has low noise and improve the riding comfort of passengers.
Another object of the present utility model is to provide a seat height adjusting device, which prevents stress concentration and crushing failure of an outer housing, improves strength and durability of a product, improves seating safety of a seat, has low noise, and improves seating comfort of passengers.
In order to solve the technical problems, the utility model provides a seat height adjuster, which comprises a speed reducing unit and an outer shell, wherein the outer shell is made of plastic materials,
the speed reducing unit comprises a sliding block, two ends of the sliding block in a first direction are provided with limiting protrusions which extend reversely, the number of the limiting protrusions at each end is more than two, the limiting protrusions at the same end are distributed at intervals along a second direction,
the inside of the outer shell is provided with a mounting groove, two ends of the mounting groove in the first direction are provided with limiting parts which extend reversely, the number of the limiting parts at each end is more than two, the limiting parts at the same end are distributed at intervals along the second direction,
under the installation state, the slider is located in the mounting groove, spacing protruding one-to-one is located in the spacing portion, spacing protruding second direction's lateral wall with the laminating is corresponding to spacing portion second direction's lateral wall, the slider can only be in along first direction removal in the mounting groove, first direction with second direction mutually perpendicular.
According to the utility model, the number of the limiting protrusions arranged at each end of the sliding block in the first direction is more than two, and the number of the limiting parts arranged at each end of the mounting groove in the first direction is more than two, so that the contact area between the sliding block and the outer shell is increased, the bearing area of the outer shell is increased, the stress level in a single limiting part is reduced, the stress concentration is reduced, the strength of the plastic shell is effectively exerted, the integral strength and durability of the product are improved, the breakage failure of the outer shell is avoided, and the riding safety of passengers is improved; meanwhile, the metal stop block is not required to be arranged independently, the load is borne only through the plastic shell, the cost is low, the weight is reduced, the noise problem is reduced, and the riding comfort of passengers is improved.
Optionally, the number of the limiting protrusions is five at each end of the sliding block, and the number of the limiting portions is five at each end of the mounting groove.
Optionally, one of them peripheral wall of slider second direction is provided with the location breach, the inner peripheral wall of mounting groove corresponds and is provided with the location arch, the location arch is located inside the location breach, the location arch can be in the inside relative motion of first direction along of location breach.
Optionally, the other peripheral wall of the second direction of the sliding block is also provided with the positioning notch, and the sliding block is of a central symmetrical structure.
Optionally, the device further comprises an elastic component, wherein the elastic component is arranged between the speed reduction unit and the outer shell, the elastic component is in an energy storage state, and the energy storage direction of the elastic component is along the arrangement direction of each component in the speed reduction unit.
Optionally, the elastic component is a rubber pad.
Optionally, the elastic component is a metal spring.
Optionally, the inside spacing post that is provided with of shell body still includes the gasket, the gasket is located the speed reduction unit with between the elastomeric element, the gasket middle part has spacing hole, spacing post is followed spacing hole is inside to pass, spacing post with gasket circumference is spacing.
Optionally, the spacing post is quadrangular structure, spacing hole be with spacing post assorted square hole.
The utility model also provides a seat height adjusting device which comprises a connecting rod mechanism arranged on two sides of the seat and the seat height adjuster, wherein the seat height adjuster is used for driving the connecting rod mechanism to lift so as to drive the seat to lift.
The seat height adjusting device comprises the seat height adjuster, so that the seat height adjusting device has the same technical effects as the seat height adjuster and is not described in detail herein.
Drawings
FIG. 1 is a schematic view of a split structure of a seat recliner according to an embodiment of the present utility model;
FIG. 2 is a partial schematic view of the seat recliner of FIG. 1;
FIG. 3 is a schematic view of the outer shell of the seat recliner of FIG. 1;
FIG. 4 is a schematic view of the slider of the recliner of FIG. 1 shown mounted within an outer housing;
FIG. 5 is a cross-sectional view of FIG. 4;
wherein reference numerals in fig. 1-5 are described as follows:
1-an output gear;
2-an outer shell; 2 a-mounting slots; 2a 1-a limit part; 2 b-positioning projections; 2 c-a limit column;
3-a housing cover;
4-an output shaft;
511-worm gear; 521-driving shaft; 521 a-protrusions; 522-a slider; 522 a-a limit projection; 522 b-a limit groove; 522 c-positioning a notch; 523-planetary internal gear; 524-planetary outer gear; 524 a-bosses; 525-bushings; 525 a-notch;
6-lining a disc;
7-an elastic member;
8-a gasket; 8 a-limit holes.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings and specific embodiments.
The terms "first," "second," and the like, herein are merely used for convenience in describing two or more structures or components that are identical or functionally similar, and do not denote any particular limitation of order and/or importance.
Referring to fig. 1-2, fig. 1 is a schematic structural view of an embodiment of a seat lifter according to the present utility model; fig. 2 is a partial schematic view of the seat recliner of fig. 1.
The utility model provides a seat height adjuster which is used for driving a connecting rod mechanism on two sides of a seat to lift so as to drive the seat to lift and realize the position adjustment of the seat in the height direction.
The seat height adjuster is particularly comprising a driving motor, a speed reducing unit and an output gear 1 which are sequentially connected in a transmission mode, and further comprising an outer shell 2 and an outer shell cover 3, wherein the outer shell cover 3 is fixed on a seat side plate to achieve fixation of the seat height adjuster, the outer shell 2 and the outer shell cover 3 are fixed into a whole through screws, an accommodating space is formed by enclosing the outer shell 2 and the outer shell cover 3, the speed reducing unit is arranged in the accommodating space, and the driving motor is fixed on the outer side of the outer shell 2.
The driving motor is provided with a motor shaft, the motor shaft is used as an input shaft of the speed reducing unit, the driving motor further comprises an output shaft 4, the output shaft 4 is arranged along the direction perpendicular to the output shaft of the motor, the first end is matched with the hole feature of the outer shell 2, and the second end penetrates out of the outer shell cover 3 and is clamped and fixed through a limiting sleeve. The speed reducing unit comprises a worm and gear speed reducing mechanism and a small-tooth-difference speed reducing mechanism, and a worm in the worm and gear speed reducing mechanism is fixedly connected with a motor shaft, so that the worm can rotate under the drive of the motor shaft, a worm wheel 511 in the worm and gear speed reducing mechanism is rotatably arranged on the output shaft 4, and the worm wheel 511 can rotate around the axial direction of the output shaft 4 under the drive of the worm, and one-stage speed reduction is realized.
The small-tooth-difference speed reducing mechanism specifically comprises a driving shaft 521, a sliding block 522, a planetary internal gear 523, a planetary external gear 524 and a bushing 525, wherein the driving shaft 521 is fixed at one end of the worm wheel 511, which is opposite to the driving motor, and the driving shaft 521 and the worm wheel 511 are eccentrically arranged, the eccentric amount is equal to the eccentric amount required by the small-tooth-difference mechanism, the output shaft 4 passes through the driving shaft 521, and the output shaft 4 is not concentric with the driving shaft 521, so that when the worm wheel 511 rotates, the axis of the driving shaft 521 takes the axis of the output shaft 4 as the circle center, and the eccentric amount is the radius to do circular motion;
the upper end of the peripheral wall of the bushing 525 is provided with a plurality of notches 525a, the notches 525a are distributed at intervals along the circumferential direction, the peripheral wall of the driving shaft 521 is correspondingly provided with a plurality of protrusions 521a, the protrusions 521a are distributed at intervals along the circumferential direction, the bushing 525 is sleeved with the driving shaft 521, the notches 525a are correspondingly matched with the protrusions 521a one by one, and when the driving shaft 521 rotates, the bushing 525 can be driven to synchronously rotate, and the two become a whole;
the sliding block 522 is located between the planetary external gear 524 and the worm gear 511, and is of an annular structure, two opposite extending limiting protrusions 522a are arranged at two ends of the outer peripheral wall of the sliding block 522 in the first direction, two opposite limiting grooves 522b are formed in the inner peripheral wall of the sliding block 522 in the second direction, mounting grooves 2a matched with the sliding block 522 are formed in the outer shell 2, opposite extending limiting portions 2a1 are formed at two ends of the mounting grooves 2a in the first direction, in the mounting state, the output shaft 4 penetrates through the sliding block 522, the sliding block 522 is mounted in the mounting grooves 2a, the limiting protrusions 522a are located in the corresponding limiting portions 2a1, the side walls of the limiting protrusions 522a in the second direction are correspondingly attached to the side walls of the mounting grooves 2a in the second direction, and the sliding block 522 can only move in the mounting grooves 2a in the first direction;
the middle part of the planetary external gear 524 is provided with a central hole for the driving shaft 521 to pass through, the side wall of the planetary external gear 524 facing the sliding block 522 is also provided with two convex parts 524a, the convex parts 524a are in one-to-one corresponding fit with limit grooves 522b of the inner peripheral wall of the sliding block 522, the external teeth of the planetary external gear 524 are matched with the internal teeth of the planetary internal gear 523, and the planetary internal gear 523 is rotatably sleeved with the output shaft 4 and is arranged in the inner groove of the housing cover 3.
In this way, the protruding portion 524a and the limiting groove 522b correspondingly cooperate to perform a circumferential limiting function, so that the planetary external gear 524 can only slide along the extending direction of the limiting groove 522b relative to the sliding block 522, namely along the second direction, but cannot rotate, and as the sliding block 522 can slide in the first direction, the planetary external gear 524 can perform circumferential movement under the driving of the driving shaft 521 and is always meshed with the planetary internal gear 523, and the planetary internal gear 523 is driven to rotate, so that two-stage speed reduction is realized.
The output gear 1 is fixedly connected with the planetary internal gear 523, penetrates through the lining disc 6, penetrates out of the shell cover 3 and is meshed with a toothed plate on the seat, and further power is transmitted to the connecting rod mechanism to achieve lifting of the seat.
In summary, the power transmission process of the seat height adjuster of the utility model is as follows:
the motor shaft of the driving motor rotates to drive the worm to synchronously rotate, and as the worm is meshed with the worm wheel 511, power is transmitted to the worm wheel 511, so that primary speed reduction is realized;
because the driving shaft 521 and the worm gear 511 are fixed into a whole and are eccentrically arranged, the driving shaft 521 performs circular motion and drives the planetary external gear 524 to perform circular motion, and because the planetary external gear 524 is always meshed with the planetary internal gear 523, the planetary internal gear 523 is driven to rotate, and two-stage speed reduction is realized;
the planetary internal gear 523 is fixedly connected to the output gear 1, and thus, transmits power to the output gear 1 to drive the output gear 1 to rotate.
It will be appreciated that the impact load or the high torque static load (about 200 Nm) from the seat is inevitably transmitted from the output gear 1 to the slider 522, the slider 522 is forced to move (move or rotate) in the second direction, and the two limit protrusions 522a of the slider 522 are transmitted to the outer housing 2, and the outer housing 2 is usually made of plastic materials for cost, light weight and noise consideration, so if the contact area between the slider 522 and the outer housing 2 is small, stress concentration may be caused, so that the outer housing 2 is broken and failed, and serious threat is caused to the safety of passengers; the metal stopper and the outer case 2 are provided to bear the load together, which also causes a noise problem and affects the riding comfort of passengers.
Referring to fig. 1 to 5, fig. 3 is a schematic structural view of an outer housing in the seat lifter of fig. 1; FIG. 4 is a schematic view of the slider of the recliner of FIG. 1 shown mounted within an outer housing; fig. 5 is a cross-sectional view of fig. 4.
In the utility model, two ends of a sliding block 522 in a first direction are provided with limit protrusions 522a which extend reversely, the number of limit protrusions 522a at each end is five, and the five limit protrusions 522a at the same end are distributed at intervals along a second direction; the mounting groove 2a is provided with limiting parts 2a1 extending reversely at two ends of the first direction, the number of the limiting parts 2a1 at each end is five, the five limiting parts 2a1 at the same end are distributed at intervals along the second direction, and the first direction and the second direction are mutually perpendicular.
The arrangement increases the contact area between the sliding block 522 and the outer shell 2 under the condition of limited space, increases the bearing area of the outer shell 2, reduces the stress level in a single limiting part 2a1, reduces stress concentration, more effectively exerts the strength of the plastic shell, improves the integral strength and durability of the product, avoids the breakage and failure of the outer shell 2, and improves the riding safety of passengers; meanwhile, the metal stop block is not required to be arranged independently, the load is borne only through the plastic shell, the cost is low, the weight is reduced, the noise problem is reduced, and the riding comfort of passengers is improved.
It can be understood that the number of the limiting protrusions 522a provided at the two ends of the slider 522 in the first direction is not limited, and the number of the limiting portions 2a1 provided at the two ends of the mounting groove 2a in the first direction is not limited, for example, the number of the limiting protrusions 522a provided at the two ends of the slider 522 in the first direction may be more than two, the number of the limiting portions 2a1 provided at the two ends of the mounting groove 2a in the first direction may be more than two, in practical application, the number of the limiting protrusions 522a may be adaptively adjusted according to the size of the mounting groove 2a, the size of the limiting protrusions 522a, and the like, so as to increase the contact area between the slider 522 and the outer casing 2 as much as possible, and increase the bearing area of the outer casing 2.
Referring to fig. 3 to 5, in the present utility model, two peripheral walls of the slider 522 in the second direction are provided with positioning notches 522c, the slider 522 is in a central symmetrical structure, one of the inner peripheral walls of the mounting groove 2a is correspondingly provided with positioning protrusions 2b, the positioning protrusions 2b are located inside the positioning notches 522c, and the positioning protrusions 2b can relatively move in the first direction inside the positioning notches 522 c.
In practical application, the slider 522 is usually formed by a stamping process, the dimensions and the finish of the front and back sides of the slider 522 are different, in the installation process, the corner collapse side surface of the slider 522 needs to be guaranteed to face the outer casing 2, the burr side surface faces the planetary gear 524, therefore, a positioning notch 522c is arranged on the outer peripheral wall of the second direction of the slider 522, a positioning protrusion 2b is correspondingly arranged on the inner peripheral wall of the mounting groove 2a, and only when the positioning protrusion 2b is positioned in the positioning notch 522c, the installation direction of the slider 522 is required to be satisfied, and the function of preventing the slider 522 from being reversely assembled is achieved.
Wherein, the length of the positioning notch 522c should satisfy the requirement: the movement of the slider 522 in the first direction is not affected.
In addition, the sliding block 522 has a central symmetrical structure, so the sliding block 522 can be smoothly installed after rotating 180 degrees, and the operation is convenient. Of course, it will be understood that in practical applications, it is also feasible to provide the positioning notch 522c on only one of the peripheral walls of the slider 522 in the second direction, and still achieve the technical effect of preventing the slider 522 from being reversely assembled.
With continued reference to fig. 1-2, the present utility model further includes an elastic member 7, where the elastic member 7 is disposed between the speed reduction unit and the outer housing 2, the elastic member 7 is in an energy storage state, and an energy storage direction of the elastic member 7 is along an arrangement direction of each component in the speed reduction unit.
The arrangement direction of each part in the speed reduction unit, namely along the extending direction of the output shaft 4, defines the extending direction of the output shaft 4 as the longitudinal direction, and the elastic part 7 is arranged in an energy storage state, and the elastic part 7 applies a pressing force along the longitudinal direction to the speed reduction unit, so that each part in the speed reduction unit is more compact in the longitudinal direction, the longitudinal clearance of the speed reduction unit is eliminated, and the effects of reducing transmission vibration and noise are achieved.
The elastic member 7 may be a rubber pad, or a metal spring may be used as an alternative, such as a coil spring.
Further, the inside spacing post 2c that still is provided with of shell body 2 still includes gasket 8, and gasket 8 is located between reduction unit and the elastomeric element 7, and gasket 8 middle part has spacing hole 8a, and spacing post 2c passes from spacing hole 8a inside, and spacing post 2c is spacing with gasket 8 circumference.
As set forth above, during rotation of the worm wheel 511, the spacer 8 does not follow rotation thereof and remains in a relatively stationary state with the outer housing 2, thus isolating the elastic member 7 from the worm wheel 511, preventing rotational wear of the elastic member 7, improving durability of the elastic member 7, and extending the service life of the elastic member 7.
In this embodiment, the limiting post 2c is in a quadrangular prism structure, and the limiting hole 8a is a square hole matched with the limiting post 2 c; in practical application, the specific shapes of the limiting post 2c and the limiting hole 8a are not limited, for example, the limiting post 2c may be a triangular prism structure, and the limiting hole 8a may be a triangular hole matched with the limiting post 2 c.
In addition, it can be seen that the rubber pad is in an annular rubber ring structure, so that the limit post 2c can conveniently pass through the rubber pad. Of course, in practical application, the rubber pad may further include a plurality of split parts, and the split parts are circumferentially spaced apart to form a circle, so that the limiting post 2c can conveniently pass through from the inside thereof. When the elastic member 7 is in the form of a coil spring, the number of coil springs may be one, and the stopper post 2c passes through from the inside thereof; the number of the coil springs can be multiple, and the coil springs are circumferentially distributed at intervals to form a circle, and the limit posts 2c penetrate through the inside.
The utility model also provides a seat height adjusting device which comprises a connecting rod mechanism arranged on two sides of the seat and the seat height adjuster, wherein the seat height adjuster is used for driving the connecting rod mechanism to lift so as to drive the seat to lift.
The seat height adjusting device comprises the seat height adjuster, so that the seat height adjusting device has the same technical effects as the seat height adjuster and is not described in detail herein.
The above description of the utility model provides a seat recliner and a seat height adjustment device, and specific examples are applied herein to illustrate the principles and embodiments of the utility model, and the above examples are only used to help understand the method and core idea of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
Claims (10)
1. A seat recliner comprising a reduction unit and an outer housing (2), said outer housing (2) being made of a plastic material, characterized in that,
the speed reducing unit comprises a sliding block (522), two ends of the sliding block (522) in a first direction are provided with limit protrusions (522 a) which extend reversely, the number of the limit protrusions (522 a) at each end is more than two, the limit protrusions (522 a) at the same end are distributed at intervals along a second direction,
the inside of the outer shell (2) is provided with a mounting groove (2 a), two ends of the mounting groove (2 a) in the first direction are provided with limiting parts (2 a 1) which extend reversely, the number of the limiting parts (2 a 1) at each end is more than two, the limiting parts (2 a 1) at the same end are distributed at intervals along the second direction,
under the installation state, the slider (522) is located in the mounting groove (2 a), spacing protruding (522 a) one-to-one is located in spacing portion (2 a 1), spacing protruding (522 a) second direction's lateral wall with spacing portion (2 a 1) second direction's lateral wall corresponds laminating, slider (522) can only follow first direction in mounting groove (2 a) and remove, first direction with second direction mutually perpendicular.
2. The seat recliner according to claim 1, characterized in that the slider (522) is provided with five limit protrusions (522 a) at each end, and the mounting groove (2 a) is provided with five limit portions (2 a 1) at each end.
3. The seat lifter according to claim 1, characterized in that one of the outer peripheral walls of the slider (522) in the second direction is provided with a positioning notch (522 c), the inner peripheral wall of the mounting groove (2 a) is correspondingly provided with a positioning protrusion (2 b), the positioning protrusion (2 b) is located inside the positioning notch (522 c), and the positioning protrusion (2 b) can relatively move inside the positioning notch (522 c) in the first direction.
4. A seat riser according to claim 3, wherein the other peripheral wall of the slider (522) in the second direction is also provided with the positioning notch (522 c), the slider (522) being of a centrally symmetrical structure.
5. Seat riser according to any one of claims 1-4, further comprising an elastic member (7), the elastic member (7) being arranged between the reduction unit and the outer housing (2), the elastic member (7) being in an energy storage state, and an energy storage direction of the elastic member (7) being along an arrangement direction of the components in the reduction unit.
6. Seat riser according to claim 5, characterized in that the elastic member (7) is a rubber pad.
7. Seat riser according to claim 5, characterized in that the elastic member (7) is a metal spring.
8. The seat height adjuster according to claim 5, wherein a limit post (2 c) is arranged inside the outer shell (2), the seat height adjuster further comprises a gasket (8), the gasket (8) is located between the speed reduction unit and the elastic component (7), a limit hole (8 a) is formed in the middle of the gasket (8), the limit post (2 c) penetrates through the limit hole (8 a), and the limit post (2 c) and the gasket (8) are circumferentially limited.
9. The seat height adjuster according to claim 8, wherein the limit post (2 c) is of a quadrangular prism structure, and the limit hole (8 a) is a square hole matched with the limit post (2 c).
10. A seat height adjusting device, comprising a link mechanism arranged at two sides of a seat, and the seat height adjuster according to any one of claims 1 to 9, wherein the seat height adjuster is used for driving the link mechanism to lift so as to drive the seat to lift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320424448.0U CN219564849U (en) | 2023-03-07 | 2023-03-07 | Seat height adjuster and seat height adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320424448.0U CN219564849U (en) | 2023-03-07 | 2023-03-07 | Seat height adjuster and seat height adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219564849U true CN219564849U (en) | 2023-08-22 |
Family
ID=87664994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320424448.0U Active CN219564849U (en) | 2023-03-07 | 2023-03-07 | Seat height adjuster and seat height adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219564849U (en) |
-
2023
- 2023-03-07 CN CN202320424448.0U patent/CN219564849U/en active Active
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