CN201423943Y - Seat passive height-regulating mechanism and latch mechanism thereof - Google Patents
Seat passive height-regulating mechanism and latch mechanism thereof Download PDFInfo
- Publication number
- CN201423943Y CN201423943Y CN2009200711741U CN200920071174U CN201423943Y CN 201423943 Y CN201423943 Y CN 201423943Y CN 2009200711741 U CN2009200711741 U CN 2009200711741U CN 200920071174 U CN200920071174 U CN 200920071174U CN 201423943 Y CN201423943 Y CN 201423943Y
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- Prior art keywords
- ratchet
- cam
- quadrant
- regulating mechanism
- seat
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- Expired - Lifetime
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Abstract
The utility model relates to a seat passive height-regulating mechanism and a latch mechanism thereof. The seat passive height-regulating mechanism comprises a four-bar linkage mechanism; the latch mechanism comprises a pawl, a sector dental plate and a cam, the sector dental plate is one bar of the four-bar linkage mechanism, the sector dental plate has a ratchet portion, the pawl also has a ratchet portion, the cam resists against the pawl at a locking position, when in the locking position, the ratchet portion of the pawl is engaged with the ratchet portion of the sector dental plate, the cam resists against the pawl at an unlocking position again, when in the unlocking position, the ratchet portion of the pawl is separated from the ratchet portion of the sector dental plate. The numberof parts of the seat passive height-regulating mechanism is relatively small.
Description
Technical field
The purpose of this utility model is to provide passive height-regulating mechanism of a kind of automotive seat and lockable mechanism thereof.
Background technology
The used height-regulating mechanism in domestic automobile seat market mostly is initiatively height-regulating mechanism at present, the passive-type height-regulating mechanism is fewer, and the problem that existing driven member all exists, and part is many, the operating effort transmittance process is tediously long, the technology assembling is complicated, efficient is low, cost is high, therefore, be necessary to provide a kind of brand new seat passive height-regulating mechanism.
The utility model content
The purpose of this utility model is to provide passive height-regulating mechanism of a kind of new seat and lockable mechanism thereof, and number of parts wherein is less relatively.
For realizing aforementioned purpose, the passive height-regulating mechanism of seat of the present utility model, the passive height-regulating mechanism of this seat comprises a four-bar linkage.Be characterized in, also comprise a lockable mechanism, this lockable mechanism comprises a ratchet, quadrant and a cam, and this quadrant is a connecting rod of this four-bar linkage, and this quadrant has a ratchet part, this ratchet also has a ratchet part, this cam withstands ratchet in a latched position, in this latched position, and the ratchet part of ratchet and the engagement of quadrant ratchet part, this cam withstands ratchet once more at a unlocked position, separates at the ratchet part of this unlocked position ratchet and the ratchet part of quadrant.
The passive height-regulating mechanism of described seat, its further characteristics be, this cam is arranged on the camshaft, and this ratchet is arranged in the rotating shaft.
The passive height-regulating mechanism of described seat, its further characteristics are that the ratchet part of this quadrant is the arc of protrusion.
The passive height-regulating mechanism of described seat, its further characteristics be, this quadrant also has two articulated structures, and an articulated structure wherein connects with another connecting rod of this four-bar linkage, and another articulated structure connects with the pedestal of this four-bar linkage.
The passive height-regulating mechanism of described seat, its further characteristics be, an end of this camshaft connects with engine installation, and the other end connects with this cam, and this camshaft also has the structure of carrying shearing stress.
The passive height-regulating mechanism of described seat, its further characteristics are, the outline line of this cam has first convex surface and second convex surface, the outline line of this ratchet has first concave surface and second concave surface, this cam is arranged on the camshaft, this ratchet has a pivot center, in described latched position, first convex surface of this cam withstands first concave surface of this ratchet, stop this ratchet to rotate around it the latch-up structure that axis rotates along the rotation direction that can break away from this quadrant thereby form, at described unlocked position, second convex surface of this cam withstands second concave surface of this ratchet, stops this ratchet to rotate around it the latch-up structure that axis rotates along the rotation direction that can contact this quadrant thereby form.
For realizing aforementioned purpose, the lockable mechanism that is used for the passive height-regulating mechanism of seat of the present utility model, be characterized in that comprise a ratchet, a cam and a quadrant, this quadrant has a ratchet part, this ratchet also has a ratchet part, this cam withstands ratchet in a latched position, in this latched position, and the ratchet part of ratchet and the engagement of quadrant ratchet part, this cam withstands ratchet once more at a unlocked position, separates at the ratchet part of this unlocked position ratchet and the ratchet part of quadrant.
Described lockable mechanism, its further characteristics are, the outline line of this cam has first convex surface and second convex surface, the outline line of this ratchet has first concave surface and second concave surface, this cam is arranged on the camshaft, this ratchet has a pivot center, in described latched position, first convex surface of this cam withstands first concave surface of this ratchet, stop this ratchet to rotate around it the latch-up structure that axis rotates along the rotation direction that can break away from this quadrant thereby form, at described unlocked position, second convex surface of this cam withstands second concave surface of this ratchet, stops this ratchet to rotate around it the latch-up structure that axis rotates along the rotation direction that can contact this quadrant thereby form.
The beneficial effects of the utility model are: quadrant of the present utility model in cushion frame as the part of four connecting rods, the propulsive effort that is provided by skeleton and human body orders about four link works to regulate height of seat, ratchet in the mechanism plays unblanks and the locking effect, this cam withstands ratchet in a latched position, in this latched position, the ratchet part of ratchet and the engagement of quadrant ratchet part, thereby make this height-regulating mechanism by locking, this cam withstands ratchet once more at a unlocked position, separate at the ratchet part of this unlocked position ratchet and the ratchet part of quadrant, thereby this height-regulating mechanism is unlocked, and, also can realize anti-unexpected release by the fitting surface of configuration cam and locking, the function of anti-excessive release.Because the human body propulsive effort directly puts on camshaft, the power cam release, the power transmittance process is short, the efficient height, thus reduced number of parts.
Aforementioned purpose of the present utility model, technical scheme and beneficial effect will accompanying drawings, the specific embodiment illustrate further below.
Description of drawings
Fig. 1 is the assembly figure of an embodiment of passive height-regulating mechanism of the present utility model.
Fig. 2 is the decomposition view of embodiment shown in Figure 1.
Fig. 3 is the quadrant of the passive height-regulating mechanism of the present utility model scheme drawing as the part of four connecting rods in cushion frame.
Fig. 4 is the scheme drawing that is in lockup state embodiment illustrated in fig. 1.
Fig. 5 is the scheme drawing that is in anti-unexpected released state embodiment illustrated in fig. 1.
Fig. 6 is the scheme drawing that is in released state embodiment illustrated in fig. 1.
Fig. 7 is the scheme drawing that is in the unlocking prevention transition condition embodiment illustrated in fig. 1.
Fig. 8 is the block diagram of camshaft embodiment illustrated in fig. 1.
The specific embodiment
See figures.1.and.2 simultaneously, passive height-regulating mechanism 1 of the present utility model comprises quadrant 50, ratchet 40, camshaft 32 and cam 31.
As shown in Figure 3, quadrant 50 is as a connecting rod of a four-bar linkage of cushion frame, and human body gravity puts on this four-bar linkage according to the direction shown in straight down the arrow 501 among Fig. 3.When quadrant 50 rotated according to the direction shown in the arrow shown in Figure 3 500, seat was raised, and on the contrary, seat is turned down.Ratchet 40, camshaft 32 and Figure 31 cooperate quadrant 50 to realize functions such as the locking of parallel motion, release, anti-unexpected release, unlocking prevention transition, and these contents will be discussed in more detail below.
As shown in Figure 4, quadrant 50 has first articulated structure 51, second articulated structure 52, guide frame 53 and ratchet part 54.As shown in Figure 3, first articulated structure 51 and a rod hinge connection, second articulated structure 52 is hinged with another connecting rod (or device pedestal), and quadrant 50 has a pivot center at first articulated structure 51 in other words, has a pivot center at second articulated structure.Among the embodiment shown in the figure, first articulated structure, second articulated structure all are connecting bores.Guide frame 53 cooperates one grade of axle 124 (as shown in Figure 2) that mandatory guiding is carried out in the rotation of quadrant 50.Guide frame 53 is to be the circular arc shaped guide slots at center with first articulated structure 51.Ratchet part 54 is shown the curved protrusion in center of first articulated structure 51 greatly.
With reference to Fig. 4 and Fig. 1,2, ratchet 40 has an articulated structure 41 simultaneously, and articulated structure is a connecting bore, and rivet 212 passes through the articulated structure 41 of ratchet 40 and a connecting bore of outer support 22, and ratchet 40 and outer support 22 are riveted rotatably.Ratchet 40 also has a ratchet portion 42.The ratchet portion 42 of ratchet 40 and the ratchet portion of quadrant 50 54 constitute a unidirectional locking structure, as shown in Figure 4, ratchet portion 42 and 54 engagements of ratchet portion in the clockwise direction, ratchet 40 can not clockwise rotate, and quadrant 50 can not rotate counterclockwise.
As Fig. 2 and shown in Figure 8, camshaft 32 has an a junction 321 and a drive division 322, its connecting portion 321 has a square button, camshaft 32 is connected with cam 31 keys by this square button, the drive division 322 of camshaft 32 is connected with an engine installation, camshaft 32 rotates under the driving of engine installation, and then drives cam 31 rotations.Camshaft 32 can be spacing by playing, drive and the effect of carrying shearing stress.The key junction of camshaft 32 and cam 31 also is embedded with a lining 120.In position shown in Figure 4, cam 31 is turned to latched position by camshaft 32, and the profile of cam 31 has first convex surface 311, and first convex surface 311 of cam 31 withstands the profile of ratchet 40, and ratchet 40 can not be rotated counterclockwise.Under lockup state shown in Figure 4, ratchet 40 can not clockwise rotate with quadrant 50 unidirectional lockings on the one hand, is controlled and can not rotate counterclockwise by cam 31 on the other hand, and quadrant 50 is in stabilized conditions like this.Get back to Fig. 1 and Fig. 2, wind spring 11 is arranged between the connecting portion 321 of outer support 21 and camshaft 32, wind spring 11 applies a spring force for camshaft 32, and under the effect of this spring force, camshaft 32 can make camshaft 32 drive cam 31 and make ratchet 40 and quadrant 50 engagement tightly always.
With reference to Fig. 4, the right lateral contours of ratchet 40 has one first concave surface 43 simultaneously.When passive height-regulating mechanism 1 was in lockup state, first convex surface 311 of cam 31 had headed into first concave surface 43.
Situation when Fig. 5 has shown the anti-unexpected release of passive height-regulating mechanism 1, when passive height-regulating mechanism 1 has been in as shown in Figure 4 lockup state, if seat support unexpectedly is subjected to the power F in dead aft, power F is transmitted to ratchet 40 by quadrant 50, can produce the anti-clockwise moment of torsion M that acts on ratchet 40
RatchetMoment of torsion M
RatchetCan make ratchet 40 have the trend of anticlockwise direction motion, thereby ratchet 40 apply a clockwise moment of torsion M to cam 31 again
CamThe realization that ratchet 40 described herein applies a clockwise moment of torsion to cam 31 depends on the profile function of cam, these profile functions can be determined in conjunction with actual condition according to existing cam layout principle, in the embodiment shown in fig. 5, the outline line function of the profile function of the indent of first concave surface 43 and first convex surface 311 for example is respectively (X-a)
2+ (Y+b)
2=144, (X-c)
2+ (Y+d)
2=6.3, a wherein, b, c and d are constants, with system of axes choose difference and difference, unit is mm.
Clockwise moment of torsion M
CamCan make cam 31 have and continue the trend that clockwise direction rotates, thereby withstand ratchet 40 all the more, make it to be difficult to release.
Fig. 6 shows the released state of passive height-regulating mechanism 1.One C.C.W. moment of torsion m is provided for camshaft 32
CamMake cam 31 rotate counterclockwise, after turning an angle, the lower end of the left side of cam 31 and ratchet 40 disengages, second convex surface 312 that then is rotated further the profile that makes cam 31 contacts with second concave surface 44 of ratchet 40, gives ratchet 40 anti-clockwise moment of torsion m
Ratchet, make ratchet 40 rotate around it the center anticlockwise motion, until ratchet 40 and quadrant 50 jump out of meshs, reach unlocking function.
Fig. 7 has shown the situation that the unlocking prevention of passive height-regulating mechanism 1 is excessive.After release shown in Figure 6, for preventing that the excessive edge 45 of ratchet 40 that causes of ratchet 40 anglecs of rotation that the excessive application of force causes from contacting with the flank of tooth of tooth plate 50, so second convex surface 312 and second concave surface 44 are set respectively at cam 31 and ratchet 40 contacted parts, after making cam 31 driving ratchets 40 finish unlocking function, in the predetermined anglec of rotation, can stop ratchet 40 to continue to rotate counterclockwise, reach the excessive function of unlocking prevention, in the embodiment shown in fig. 7, the outline line function of the profile function of the indent of second concave surface 44 and second convex surface 312 for example is respectively:
(X-e)
2+ (Y+f)
2=4, (X-g)
2+ (Y+h)
2=100, a wherein, b, c and d are constants, with system of axes choose difference and difference, unit is mm.
Claims (8)
1. passive height-regulating mechanism of seat, the passive height-regulating mechanism of this seat comprises a four-bar linkage, it is characterized in that, also comprise a lockable mechanism, this lockable mechanism comprises a ratchet, a quadrant and a cam, this quadrant is a connecting rod of this four-bar linkage, this quadrant has a ratchet part, this ratchet also has a ratchet part, this cam withstands ratchet in a latched position, in this latched position, and the ratchet part of ratchet and the engagement of quadrant ratchet part, this cam withstands ratchet once more at a unlocked position, separates at the ratchet part of this unlocked position ratchet and the ratchet part of quadrant.
2. the passive height-regulating mechanism of seat as claimed in claim 1 is characterized in that this cam is arranged on the camshaft, and this ratchet is arranged in the rotating shaft.
3. the passive height-regulating mechanism of seat as claimed in claim 1 is characterized in that the ratchet part of this quadrant is the arc of protrusion.
4. the passive height-regulating mechanism of seat as claimed in claim 3 is characterized in that this quadrant also has two articulated structures, and an articulated structure wherein connects with another connecting rod of this four-bar linkage, and another articulated structure connects with the pedestal of this four-bar linkage.
5. the passive height-regulating mechanism of seat as claimed in claim 2 is characterized in that an end of this camshaft connects with engine installation, and the other end connects with this cam, and this camshaft also has the structure of carrying shearing stress.
6. the passive height-regulating mechanism of seat as claimed in claim 1, it is characterized in that, the outline line of this cam has first convex surface and second convex surface, the outline line of this ratchet has first concave surface and second concave surface, this cam is arranged on the camshaft, this ratchet has a pivot center, in described latched position, first convex surface of this cam withstands first concave surface of this ratchet, stop this ratchet to rotate around it the latch-up structure that axis rotates along the rotation direction that can break away from this quadrant thereby form, at described unlocked position, second convex surface of this cam withstands second concave surface of this ratchet, stops this ratchet to rotate around it the latch-up structure that axis rotates along the rotation direction that can contact this quadrant thereby form.
7. lockable mechanism that is used for the passive height-regulating mechanism of seat, it is characterized in that, comprise a ratchet, a cam and a quadrant, this quadrant has a ratchet part, and this ratchet also has a ratchet part, and this cam withstands ratchet in a latched position, in this latched position, the ratchet part of ratchet and the engagement of quadrant ratchet part, this cam withstands ratchet once more at a unlocked position, separates at the ratchet part of this unlocked position ratchet and the ratchet part of quadrant.
8. lockable mechanism as claimed in claim 7, it is characterized in that, the outline line of this cam has first convex surface and second convex surface, the outline line of this ratchet has first concave surface and second concave surface, this cam is arranged on the camshaft, this ratchet has a pivot center, in described latched position, first convex surface of this cam withstands first concave surface of this ratchet, stop this ratchet to rotate around it the latch-up structure that axis rotates along the rotation direction that can break away from this quadrant thereby form, at described unlocked position, second convex surface of this cam withstands second concave surface of this ratchet, stops this ratchet to rotate around it the latch-up structure that axis rotates along the rotation direction that can contact this quadrant thereby form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200711741U CN201423943Y (en) | 2009-04-27 | 2009-04-27 | Seat passive height-regulating mechanism and latch mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200711741U CN201423943Y (en) | 2009-04-27 | 2009-04-27 | Seat passive height-regulating mechanism and latch mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201423943Y true CN201423943Y (en) | 2010-03-17 |
Family
ID=42023380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200711741U Expired - Lifetime CN201423943Y (en) | 2009-04-27 | 2009-04-27 | Seat passive height-regulating mechanism and latch mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201423943Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267098A (en) * | 2013-05-16 | 2013-08-28 | 北京空间飞行器总体设计部 | Hinge for locking four-bar mechanism |
| CN104890548A (en) * | 2014-03-04 | 2015-09-09 | 伊思灵豪森有限责任公司 | Locking device for suspension system and a vehicle seat with the suspension system |
-
2009
- 2009-04-27 CN CN2009200711741U patent/CN201423943Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267098A (en) * | 2013-05-16 | 2013-08-28 | 北京空间飞行器总体设计部 | Hinge for locking four-bar mechanism |
| CN103267098B (en) * | 2013-05-16 | 2015-07-29 | 北京空间飞行器总体设计部 | A kind of hinge of quadratic crank mechanism locking |
| CN104890548A (en) * | 2014-03-04 | 2015-09-09 | 伊思灵豪森有限责任公司 | Locking device for suspension system and a vehicle seat with the suspension system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FAURECIA (CHINA) INVESTMENT CO., LTD. Free format text: FORMER OWNER: FAURECIA (SHANGHAI) MANAGEMENT CO., LTD. Effective date: 20130130 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200233 XUHUI, SHANGHAI TO: 201108 MINHANG, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130130 Address after: 201108 Shanghai City, Minhang District Shen road, No. 519 Building 1 block G Patentee after: Faurecia (China) Investment Co., Ltd. Address before: 200233 Qinzhou Road, Shanghai Caohejing New Technology Development Zone No. 1122, building 91, floor 3 Patentee before: Faurecia (Shanghai) Management Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100317 |