CN112757976A

CN112757976A - Seat inclination angle driver

Info

Publication number: CN112757976A
Application number: CN202110167739.1A
Authority: CN
Inventors: 谢模焱; 徐振华; 李蕾; 唐黎明; 胡锡胜; 郭坤; 姚颖杰
Original assignee: GAC Component Co Ltd
Current assignee: GAC Component Co Ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-05-07

Abstract

The invention discloses a seat inclination angle driver, which comprises a driving assembly, a gear box assembly, a support assembly and a screw rod assembly, wherein the driving assembly comprises a worm, the gear box assembly comprises a gear box body and a worm wheel, the support assembly comprises a support main body, the screw rod assembly comprises a screw rod main body, the worm is meshed with the worm wheel, the worm and the worm wheel are installed on the gear box body, the worm wheel is in transmission connection with the screw rod main body, the gear box body is accommodated in the support main body, the outer surface of the gear box body is provided with an outer arc surface, the support main body is provided with an inner arc surface corresponding to the outer arc surface, and the outer arc surface is matched with the inner arc surface to enable the gear box body to rotate up and down and left and.

Description

Seat inclination angle driver

Technical Field

The invention relates to automobiles, in particular to a seat inclination angle driver.

Background

Along with the continuous improvement of the requirement of people on the comfort of the automobile seat, the requirement of the electric adjustment of the seat inclination angle is gradually improved, and the application of an automobile seat inclination angle driver is wider and wider. The seat inclination angle driver mainly utilizes electric energy to drive the motor, decelerates through the gear box transmission system, and finally outputs the decelerated speed through the screw rod to drive a corresponding mechanism on the seat to act, so that the front lifting adjustment of the seat is realized. As a core component of an automobile seat, the requirement on the reliability of a seat inclination angle driver is high, and the existing seat inclination angle driver is uneven in stress and unstable in operation, so that the performance is unstable.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a seat inclination angle driver which is more uniform and balanced in stress, more stable in operation and more stable in performance.

One of the purposes of the invention is realized by adopting the following technical scheme:

the utility model provides a seat inclination driver, includes drive assembly, gear box subassembly, bracket component and lead screw subassembly, drive assembly includes the worm, the gear box subassembly includes gear box body and worm wheel, the bracket component includes support subject, the lead screw subassembly includes lead screw main part, the worm with the worm wheel meshing, the worm with the worm wheel install in the gear box body, the worm wheel with lead screw main part transmission is connected, gear box body accept in inside the support subject, gear box body's surface is equipped with extrados, support subject be equipped with the corresponding intrados of extrados, extrados with the intrados cooperation makes gear box body can be rotatory about and in the support subject.

Further, the gearbox subassembly still includes the gearbox lid, the gearbox lid is fixed in the gearbox body, the extrados includes first extrados, second extrados, third extrados and fourth extrados, first extrados, second extrados and third extrados are located on the gearbox body, the fourth extrados is located on the gearbox lid, first extrados with the second extrados sets up relatively, the third extrados with the fourth extrados sets up relatively.

Further, the first extrados surface, the second extrados surface, the third extrados surface and the fourth extrados surface are arc surfaces.

Further, the first extrados surface has the same radius as the second extrados surface, and the third extrados surface has the same radius as the fourth extrados surface.

Further, the first extrados surface and the third extrados surface have different radii.

Further, the gearbox assembly further comprises a screw, the gearbox cover is fixed to the gearbox body through the screw, and the screw can adjust the locking force between the gearbox cover and the gearbox body.

Furthermore, oil storage holes are respectively formed in the gear box cover and the gear box body.

Further, the support main body is formed by plastic injection molding and is integrally formed.

Further, the bracket component still includes limiting plate and boss, the limiting plate with the boss is fixed in respectively support main part both sides, the limiting plate with the boss is strengthened the structural strength of support main part and can prevent driver axial float.

Compared with the prior art, the seat inclination angle driver has the following beneficial effects:

(1) the outer surface of the gear box body is provided with an outer arc surface, the support main body is provided with an inner arc surface corresponding to the outer arc surface, the outer arc surface is matched with the inner arc surface to enable the gear box body to rotate up and down and left and right in the support main body, and the gear box assembly rotates left and right, so that the driver can meet a certain adjusting angle, and the front lifting adjustment of the seat is realized; when the gear box assembly rotates up and down, the gear box assembly is in contact with the support assembly through an arc surface, so that the abrasion between the box body and the support is reduced, the stress is more balanced in the operation process of the driver, and the operation is more stable;

(2) the bracket main body is formed by plastic injection molding and is integrally formed, so that the cost and the weight are reduced, and the manufacturing and mounting processes are simplified on the premise of meeting higher mechanical locking strength;

(3) the limiting plate and the boss strengthen the structural strength of the support main body, the mechanical locking strength of the driver is improved, and the driver can be prevented from axially moving;

(4) the gear box cover and the gear box body are respectively provided with oil storage holes, so that abrasion between the gear box cover and the bracket component is reduced, and the service life of the driver is prolonged.

Drawings

FIG. 1 is a perspective view of a seat recliner actuator of the present invention;

FIG. 2 is an exploded view of the seat recliner actuator of FIG. 1;

FIG. 3 is a cross-sectional view of a gear box assembly of the seat recliner actuator of FIG. 2;

FIG. 4 is a perspective view of a bracket assembly of the seat recliner actuator of FIG. 2;

FIG. 5 is a front view of the bracket assembly of FIG. 4;

fig. 6 is a perspective view of the stopper plate of fig. 4.

In the figure: 100. a drive assembly; 101. a motor; 102. a fastener; 103. a rotor shaft; 111. a worm; 200. a gearbox assembly; 201. a gear housing; 2011. a first extrados surface; 2012. a second extrados surface; 2013. a third extrados surface; 202. a bearing; 203. a worm gear; 204. a screw; 205. a gearbox cover; 2051. a fourth extrados surface; 300. a bracket assembly; 301. a stent body; 3011. a first intrados surface; 3012. a second intrados surface; 3013. a third intrados surface; 3014. a fourth intrados surface; 302. a limiting plate; 303. a fixing hole; 304. a first boss; 305. a second boss; 306. an oil storage tank; 307. a third boss; 400. a screw assembly; 401. a lead screw body; 402. a screw head; 403. a limiting sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 to 6 show a seat tilt angle actuator of the present invention, which is used to drive a corresponding mechanism on a seat to move, so as to adjust the front lifting of the seat. The seat recliner actuator includes a drive assembly 100, a gearbox assembly 200, a bracket assembly 300, and a lead screw assembly 400.

The drive assembly 100 includes a motor 101, fasteners 102, a rotor shaft 103, and a worm 111. The motor 101 is a circular four-pole motor and is light in weight. The motor 101 is fixed to the gear housing 201 by a fastener 102. The rotor shaft 103 is in driving connection with a worm 111. The motor 101 drives the rotor shaft 103 to rotate through electric energy, and the rotor shaft 103 drives the worm 111 to rotate.

The gearbox assembly 200 includes a gearbox housing 201, two bearings 202, a worm gear 203, screws 204, and a gearbox cover 205. The two bearings 202 are respectively installed at two opposite ends of the worm wheel 203, the two bearings 202 provide circumferential constraint and supporting rigidity for the worm wheel 203, and meanwhile, the axial size matching amount of the two bearings 202 and the worm wheel 203 is controlled through size chain calculation, so that the axial clearance between the bearings 202 and the worm wheel 203 is eliminated, and the worm wheel 203 and the worm 111 are more stable and reliable in the transmission process. The gear box body 201 and the gear box cover 205 are assembled through the screw 204 to form the gear box, and the axial clearance between the bearing 202 and the worm wheel 203 can be further adjusted through the locking force of the screw 204. The gearbox assembly 200 is provided with an extrados surface. The extrados include first extrados 2011, second extrados 2012, third extrados 2013 and fourth extrados 2051, and first extrados, second extrados 2012 and third extrados 2013 are located on gearbox casing 201, and fourth extrados 2051 is located on gearbox cover 205. The first extrados surface 2011, the second extrados surface 2012, the third extrados surface 2013 and the fourth extrados surface 2051 are all arc surfaces and use the center O as a circle center. The first extrados 2011 is opposite to the second extrados 2012, and the third extrados 2013 is opposite to the fourth extrados 2051. The first extrados 2011 has the same radius as the second extrados 2012, and the third extrados 2013 has the same radius as the fourth extrados 2051. The first extrados surface 2011 has a different radius than the third extrados surface 2013. First extrados 2011, the design aim at of second extrados 2012 are when the gear box is rotatory from top to bottom for the upper and lower contact between gear box and the support main part 301 is through the arc surface contact, not only reduces the wearing and tearing condition between box and the support main part 301, makes the driver operation in-process atress more balanced moreover, and the operation is also more steady. The design purpose gearbox assembly 200 of the third extrados 2013 and the fourth extrados 2051 and the bracket assembly 300 rotate left and right, so that the driver can meet a certain adjusting angle, and the front lifting adjustment of the seat is realized. The gear box cover 205 and the gear box body 201 are respectively provided with oil storage holes, so that abrasion between the gear box cover and the bracket component 300 is reduced, and the service life of the driver is prolonged.

The bracket assembly 300 includes a bracket main body 301, a limit plate 302, a first boss 304, a second boss 305, and a third boss 307. The bracket main body 301 is made of plastic and is integrally formed, so that the cost and the weight are reduced, and the manufacturing and mounting processes are simplified on the premise of meeting higher mechanical locking strength. The support main part 301 is inside to be equipped with the intrados, and the intrados includes first intrados 3011, second intrados 3012, third intrados 3013 and fourth intrados 3014. The first intrados 3011, the second intrados 3012, the third intrados 3013, and the fourth intrados 3014 use the center O as a circle center, and respectively correspond to the first extrados 2011, the second extrados 2012, the third extrados 2013, and the fourth extrados 2051. The holder main body 301 is provided with a fixing hole 303, and the holder main body 301 is fixed with the seat through the fixing hole 303. The holder main body 301 is provided with an oil reservoir 306, the oil reservoir 306 reduces wear and the design of the oil reservoir 306 also reduces the weight of the holder main body 301 to some extent. The limiting plate 302 is provided with a third boss 307, the third boss 307 is in a circular arc shape, the radius of the third boss 307 is the same as that of the gear box, the third boss 307 facilitates installation and error prevention of the gear box, and meanwhile the overall strength of the bracket main body 301 is increased, and abrasion between the limiting plate 302 and the gear box is reduced. The limit plate 302 is fixed to the bracket body 301 by the screw 204, and prevents the driver from moving backward. The first boss 304 and the second boss 305 are fixed on the bracket main body 301 or extend out from the bracket main body 301, and the first boss 304 and the second boss 305 can prevent the driver from moving forwards due to stress in the operation process, so that the overall strength of the bracket main body 301 is increased, and the mechanical locking strength of the driver is improved.

The lead screw assembly 400 includes a lead screw body 401, a lead screw head 402, and a stop collar 403. The screw head 402 and the stopper sleeve 403 are fixed to both ends of the screw body 401. The screw head 402 is primarily used to mount the screw assembly 400 to the seat. The lead screw head 402 and the stop collar 403 simultaneously determine the lead screw stroke through limiting.

When the seat reclining actuator is assembled, the bracket assembly 300 is fixed to the seat through the fixing hole 303. The motor 101 is fixed to the gear housing 201 by a fastener 102. The worm 111 is engaged with a worm wheel 203 arranged in the gear box body 201 to drive the worm wheel 203 to rotate, and further primary transmission is realized. The screw assembly 400 is hinged to the seat by a screw head 402. The lead screw main body 401 penetrates through the end of the gear box cover 205 from the end of the gear box body 201 and is coaxial with the central axis II of the transmission part of the gear box. At this time, the worm wheel 203 is engaged with the lead screw body 401 through the drive nut, and the lead screw body 401 is linearly reciprocated around the central axis ii. The lead screw stroke is limited and determined by the lead screw limiting sleeve 403 and the lead screw head 402. Because the screw head 402 is hinged to the seat, the screw main body 401, when moving back and forth linearly, drives the driving assembly 100 and the gear box assembly 200 to rotate together around the center O (the mounting position of the screw main body 401 is left-right rotation), thereby realizing the adjusting function of lifting and lowering the seat.

Through the design, the outer surface of the gear box body 201 of the seat inclination angle driver is provided with the outer arc surface, the support main body 301 is provided with the inner arc surface corresponding to the outer arc surface, the outer arc surface is matched with the inner arc surface, so that the gear box body 201 can rotate up and down and left and right in the support main body 301, and the gear box assembly 200 rotates left and right, so that the driver can meet a certain adjusting angle, and the front lifting adjustment of a seat is realized; when the gear box assembly 200 rotates up and down, the gear box assembly 200 is in contact with the bracket assembly 300 through an arc surface, so that the abrasion between the box body and the bracket is reduced, the stress is more balanced in the operation process of the driver, and the operation is more stable; the bracket main body 301 is formed by plastic injection molding and is integrally formed, so that the cost and the weight are reduced, and the manufacturing and mounting processes are simplified on the premise of meeting higher mechanical locking strength; the limiting plate 302 and the boss strengthen the structural strength of the bracket main body 301, the mechanical locking strength of the driver is improved, and the driver can be prevented from axially moving; the gear box cover 205 and the gear box body 201 are respectively provided with oil storage holes, so that abrasion between the gear box cover and the bracket component 300 is reduced, and the service life of the driver is prolonged.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, variations and modifications can be made without departing from the spirit of the invention, and all equivalent modifications and changes can be made to the above embodiments according to the essential technology of the invention, which falls into the protection scope of the invention.

Claims

1. A seat inclination driver, includes drive assembly, gear box subassembly, bracket component and lead screw subassembly, its characterized in that: the drive assembly includes the worm, the gear box subassembly includes gear box and worm wheel, the bracket component includes support subject, the lead screw subassembly includes the lead screw main part, the worm with the worm wheel meshing, the worm with the worm wheel install in the gear box, the worm wheel with lead screw main part transmission is connected, the gear box accept in inside the support subject, the surface of gear box is equipped with extrados, support subject be equipped with the corresponding intrados of extrados, extrados with the intrados cooperation makes the gear box can the rotation about and in the support subject.

2. The seat recliner actuator of claim 1 wherein: the gear box subassembly still includes the gear box lid, the gear box lid is fixed in the gear box body, the extrados includes first extrados, second extrados, third extrados and fourth extrados, first extrados, second extrados and third extrados are located on the gear box body, the fourth extrados is located on the gear box lid, first extrados with the second extrados sets up relatively, the third extrados with the fourth extrados sets up relatively.

3. The seat recliner actuator of claim 2 wherein: the first extrados surface, the second extrados surface, the third extrados surface and the fourth extrados surface are arc surfaces.

4. The seat recliner actuator of claim 3 wherein: the first extrados surface has the same radius as the second extrados surface, and the third extrados surface has the same radius as the fourth extrados surface.

5. The seat recliner actuator of claim 4 wherein: the first extrados surface and the third extrados surface have different radii.

6. The seat recliner actuator of claim 2 wherein: the gear box assembly further comprises a screw, the gear box cover is fixed to the gear box body through the screw, and the screw can adjust locking force between the gear box cover and the gear box body.

7. The seat recliner actuator of claim 2 wherein: and oil storage holes are respectively formed in the gear box cover and the gear box body.

8. The seat recliner actuator of claim 1 wherein: the support main body is formed by plastic injection molding and is integrally formed.

9. The seat recliner actuator of claim 1 wherein: the bracket component further comprises a limiting plate and a boss, the limiting plate and the boss are respectively fixed on two sides of the bracket main body, and the limiting plate and the boss are used for reinforcing the structural strength of the bracket main body and preventing the driver from moving axially.