CN102248902B

CN102248902B - Angle regulator of car seat

Info

Publication number: CN102248902B
Application number: CN201110142054A
Authority: CN
Inventors: 邹耀忠
Original assignee: SUZHOU ZHONMING XIANGHE PRECISION WORK CO Ltd
Current assignee: JIANGSU ZHONGMING XIANGHE SEIKO CO., LTD.
Priority date: 2011-05-30
Filing date: 2011-05-30
Publication date: 2012-10-10
Anticipated expiration: 2031-05-30
Also published as: CN102248902A

Abstract

The invention discloses an angle regulator of a car seat and belongs to the technical field of car seat accessories. The angle regulator of the car seat comprises a fluted disc seat, a fluted disc, small toothed plates, a drive mechanism and a closed ring, wherein the fluted disc seat is provided with a first shaft hole, a first locating boss and a concave cavity; a toothed plate locating boss and a supporting boss are convexly arranged in the concave cavity; the fluted disc is provided with a second shaft hole, a holding cavity and a second locating boss; an inner ring and an outer ring are formed around the outer side of the holding cavity; the inner ring is convexly provided with a limiting block, and a tooth ring is formed on the outer ring; the drive mechanism comprises a cam block, a central shaft and a spring; at least two small toothed plates are put in the concave cavity of the fluted disc seat; and the closed ring is enveloped around the outer margin of the fluted disc seat and the outer margins of the fluted disc. The invention has the advantages as follows: the consistency of actions of the plurality of small toothed plates can be ensured; the lock is reliable; and the cam block can be prevented from shaking during rotation. The invention also has the characteristics of high intensity, no gap, enough free gear for rapidly changing the angle of the angle regulator, convenience for unlocking, good flexibility of actions, few parts, convenience for assembly and processing, low cost and wide range of application.

Description

Angle regulator for automobile chair

Technical field

The invention belongs to the automobile seat accessories technical field, be specifically related between a kind of chair back that is used to be installed in seat and the seat support, can suitably regulate the angle regulator for automobile chair of the chair back with respect to the angle between the seat support

Background technology

The function of angle regulator for automobile chair is being taken on the function that changes back of seat swing angle as stated, must join on automotive seat as this device.At present, the recliner that is applied on the automobile seat comparatively common on the market is the disc type recliner, and it mainly comprises a reaction plate, an Advance plate and a lockable mechanism, is used to keep the obliquity and attitude of backrest with respect to seat cushion.Lockable mechanism comprises that one is positioned at tooth bar circle and several ratchets on the Advance plate, all has a plurality of teeth on each ratchet wherein.Ratchet can radially move between a lock position and a unlocked position.When ratchet is in lock position, the teeth on the ratchet will with the tooth bar circle interlocking on the Advance plate, thereby can locking backrest with respect to the incident angle of seat cushion.Can obtain detailed understanding in the technical scheme through previous disclosed Chinese utility model patent Granted publication CN2712705Y to this.This patent scheme discloses a kind of " omnipotent recliner "; Its achievement part is: locking intensity is high, the displacement angle is little, setting range is wide, endplay is little, degree of balance is good, simple in structure, volume is little, convenient installation; But also expose following problem in actual use: all be in the sliding tray of reaction plate moving linearly respectively because of little tooth plate and lobe plate; And the action between the blocked ear groove through little tooth plate and the blocked ear of lobe plate both sides realizes the locking and the disengagement of recliner; So the requirement on machining accuracy to parts is high, the difficult control of the conformability in recliner gap.And for example, Chinese utility model patent Granted publication CN201520234U discloses a kind of " angle regulator for automobile chair of structural development ", and its achievement part is: volume is little, simple in structure, easy to assembly, and two stressed contact surfaces are arranged during locking; Effect simultaneously, reliable lock, gap are little, convenient for unlocking, high, good, the dependable performance of dexterity of action of intensity, and applied widely, and productive costs is low.But also expose following point in actual use: 1, be uniformly distributed with, so on gear ring, no teeth groove can't be set owing to three little tooth plates are complete cycle; On fluted disc and little tooth plate, the neutral gear position limiting structure is not set again simultaneously, thereby does not have neutral position, can not change the angle of recliner fast; 2,, thereby there is not the gap design that disappears owing to the rotation through driver train drives little tooth plate moving linearly, thus high especially to the requirement on machining accuracy of straight-line groove, the bad control in the gap of recliner.

In view of above-mentioned prior art, the applicant has done useful design, has found the method that addresses the above problem, and facts have proved it is effective, and the technical scheme that will introduce below produces under this background

Summary of the invention

the objective of the invention is a kind of angle regulator for automobile chair will be provided; Not only volume is little, parts are few for it, simple in structure, easy to assembly, neutral position is arranged and can change angle fast, and reliable lock, convenient for unlocking, no gap, high, good, the dependable performance of dexterity of action of intensity; Simultaneously requirement on machining accuracy low and be convenient to processing and fabricating, can reduce production costs, applied widely.

the objective of the invention is to reach like this; A kind of angle regulator for automobile chair; Comprise fluted disc seat, fluted disc, little tooth plate, driver train and closed ring, be characterized in: described fluted disc seat is a disc, offers one first axis hole in the axial centre of fluted disc seat; On a side side of fluted disc seat, convex with and be used for one group of first positioning boss being connected with seat support seat basin side plate; Centre in fluted disc seat opposite side side constitutes cavity, in cavity, convexes with tooth plate positioning boss and support rim, and the quantity of described tooth plate positioning boss and support rim has two at least; Be arranged in uniform way respectively said first axis hole around; And be set in distance between tooth plate positioning boss and the support rim, also be concaved with a spring containing cavity, offer trough of spring hook on the said spring containing cavity at the center position of cavity; Described fluted disc is a disc; Offer one second axis hole in the axial centre of fluted disc; Constitute containing cavity at fluted disc towards the centre of fluted disc seat one side side, be formed with inner ring, the outer ring that is step-like setting respectively around the outside of said containing cavity, on the circumference of said inner ring, convex with limiting stopper to the second axis hole direction; On the circumferential inner wall of said outer ring, constitute gear ring, on the opposite side of fluted disc, convex with and be used for and one group of second positioning boss of chair back side plate bonded assembly; Described driver train is placed between the containing cavity of cavity and fluted disc of fluted disc seat; This driver train comprises cam bit, center shaft and spring; The axial centre of said cam bit offers and is formed with two protruding and two release blocked ears of locking retaining on the outer profile of cam bit hole, cam bit at least; Described spring places in the spring containing cavity of fluted disc seat; The outer end that the centre of spring has spring eye, a spring has and is used for the spring that matches with trough of spring hook, in second axis hole that the middle part that the axial centre of said center shaft is provided with center shaft axis hole, center shaft is located in the cam bit hole of cam bit, an end of center shaft is installed in fluted disc rotationally, the other end of center shaft is installed in after passing spring eye in first axis hole of fluted disc seat rotationally; Described little tooth plate has two pieces at least; The shape of each little tooth plate is identical with size; Be fan-shaped; Place respectively in the cavity of fluted disc seat; Be respectively equipped with the tooth plate knock hole that is used to supply the tooth plate positioning boss to insert on each little tooth plate, each little tooth plate is used for nibbling the teeth of joining mutually with gear ring, on fan-shaped interior circular arc, is formed with respectively and is used for the retaining groove that keeps off protruding base of matching and be used for matching with the release blocked ear with locking being shaped on one section on the fan-shaped external arc respectively, wherein the appointing of many pieces of little tooth plates one piece of little tooth plate selecting one of which be used for the positive stop lug boss that cooperates with limiting stopper on the side of fluted disc one side, also having additional one; Described closed ring is encapsulated in the outer perimeter of fluted disc seat and fluted disc.

convex with first-class high boss along the outer complete cycle of the hole wall of second axis hole in the containing cavity of said fluted disc in a concrete embodiment of the present invention, these high boss are resisted against said cam bit on the side of fluted disc one side.

are in another concrete embodiment of the present invention; The both sides of each support rim on the said fluted disc seat are formed with first bearing surface and second bearing surface with certain radian, and first bearing surface on the tooth plate positioning boss between adjacent two support rims and above-mentioned adjacent two support rims or second bearing surface are eccentric and are provided with.

in another concrete embodiment of the present invention, described each little tooth plate fan-shaped both side ends be formed be used for adjacent two support rims on first bearing surface, second the bearing surface first locking confined planes and the second locking confined planes that are complementary.

in another concrete embodiment of the present invention, the quantity of described limiting stopper is one, and limiting stopper is that the center is convexly equipped with on the circumference of said inner ring with second axis hole, is formed with fitting surface at the two ends of limiting stopper; The side of the positive stop lug boss of described little tooth plate be formed be used for limiting stopper on the boss confined planes that matches of fitting surface.

are gone back among the concrete embodiment of the present invention, and the vertical sectional shape of an end of described center shaft is square for the vertical sectional shape of the other end of circle, center shaft, and being shaped as of described center shaft axis hole is square.

In of the present invention and then concrete embodiment, it is square that being shaped as of described cam bit hole is used for that the other end with said center shaft is complementary .

more of the present invention and among concrete embodiment, and it is square that being shaped as of described spring eye is used for that the other end with said center shaft is complementary.

of the present invention also more and among concrete embodiment, the quantity of described trough of spring hook is one or more.

the present invention is because after adopting said structure; One of advantage that has, since each little tooth plate on retaining groove respectively with cam bit on corresponding release blocked ear cooperate, simultaneously, the base on each little tooth plate respectively with cam bit on corresponding locking keep off protruding the cooperation; Therefore; When external force acts on center shaft, drive each little tooth plate by the rotation of cam bit and rotate simultaneously, thereby can guarantee the conformability that many pieces little tooth plates move; Advantage two, since action of the spring on center shaft; And then by the rotation of center shaft drive cam bit; Thereby driving little tooth plate rotation resets; Teeth on the little tooth plate respectively with fluted disc on gear ring realize well nibbling and join, and protruding conflict respectively on the base of the little tooth plate of correspondence of a plurality of lockings retainings on the cam bit and form stressed contact surface is because of each little tooth plate is that centre of gration rotates with the corresponding tooth plate positioning boss on the fluted disc seat respectively; Therefore when locking, help guaranteeing the engagement fastness between the gear ring of teeth and fluted disc on the little tooth plate, reliable lock; Advantage three, since in the containing cavity of fluted disc outside the hole wall of second axis hole complete cycle convex with first-class high boss, these high boss are resisted against said cam bit on the side of fluted disc one side, can prevent effectively like this that cam bit from producing to rock in rotary course; Advantage four, since the fluted disc seat be provided with a plurality of support rims; And the both sides of each support rim be provided with little tooth plate on the first locking confined planes and the second locking confined planes first bearing surface and second bearing surface that are complementary; When stressed with little tooth plate cooperate contact surface bigger, so intensity is high; Advantage five, because tooth plate positioning boss and first bearing surface on above-mentioned adjacent two support rims or second bearing surface between adjacent two support rims is eccentric setting; Make little tooth plate make eccentric rotary around the tooth plate positioning boss; Therefore when locking, help guaranteeing between the gear ring of teeth and fluted disc on the little tooth plate engagement reliably, no gap; Advantage six, owing to convex with limiting stopper on the inner ring of fluted disc, when corresponding positive stop lug boss cooperates on limiting stopper and the little tooth plate, can guarantee that recliner has neutral position in the locking process, but thereby the angle of at high speed change recliner; Advantage seven, convenient for unlocking, good, the dependable performance of dexterity of action; Advantage eight, volume is little, parts are few, simple in structure, easy to assembly, be convenient to processing and fabricating, productive costs is low; Advantage nine, applied widely, can realize and any being connected between the seat.

Description of drawings

Fig. 1 is one embodiment of the invention shaft side figure.

Fig. 2 is the shaft side figure after each parts decomposes among Fig. 1.

Fig. 3 is that each parts decomposes the shaft side figure on the other direction of back among Fig. 1.

Fig. 4 is the plane structure chart of the present invention at lockup state.

Fig. 5 is the plane structure chart of the present invention in open mode.

Among figure: 1. fluted disc seat, 11. first axis holes, 12. first positioning boss, 13. tooth plate positioning boss, 14. cavitys, 15. spring containing cavities, 151. trough of spring hook, 16. support rims, 161. first bearing surfaces, 162. second bearing surfaces; 2. fluted disc, 21. second axis holes, 22. containing cavities, 23. inner rings, 231. limiting stoppers, 2311. fitting surfaces, 24. outer rings, 241. gear rings, 25. second positioning boss, high boss such as 26.; 3. little tooth plate, 31. teeth, 32. tooth plate knock holees, 33. first locking confined planes, 34. second locking confined planes, 35. bases, 36. retaining grooves, 37. positive stop lug boss, 371. boss confined planes; 4. protruding, the 413. release blocked ears of driver train, 41. cam bits, 411. cam bit holes, 412. locking retainings, 42. center shafts, 421. center shaft axis holes, 43. springs, 431. spring eyes, 432. springs; 5. closed ring.

The specific embodiment

can be expressly understood technical spirit of the present invention and beneficial effect more for the inspector that the makes Patent Office especially public; The applicant general combines accompanying drawing to elaborate with the mode of embodiment below; But the description to embodiment all is not the restriction to the present invention program, any according to the present invention design done only for pro forma but not substantial equivalent transformation all should be regarded as technical scheme category of the present invention.

are please with reference to Fig. 1 and combine Fig. 2, Fig. 3; Fluted disc seat 1 of the present invention is a disc; Offer one first axis hole 11 in the axial centre of fluted disc seat 1; On a side of fluted disc seat 1, convex with and be used for one group of first positioning boss 12 being connected with seat support seat basin side plate, the quantity of one group of first positioning boss 12 that provides among the figure is three, but does not receive concrete restriction; Centre at fluted disc seat 1 opposite side constitutes cavity 14; In cavity 14, convex with tooth plate positioning boss 13 and support rim 16; The quantity of described tooth plate positioning boss 13 and support rim 16 has two at least, can be two, three, four etc., in the present embodiment; Be preferably three; Three tooth plate positioning boss 13 and three support rims 16 be arranged in uniform way respectively said first axis hole 11 around, and be set in distance between tooth plate positioning boss 13 and the support rim 16, between promptly adjacent two tooth plate positioning boss 13 support rim 16 is set; Between adjacent two support rims 16 a tooth plate positioning boss 13 is arranged equally; Be formed with first bearing surface 161 and second bearing surface 162 with certain radian in the both sides of each support rim 16, tooth plate positioning boss 13 between adjacent two support rims 16 and first bearing surface 161 on above-mentioned adjacent two support rims 16 or second bearing surface 162 are eccentric and are provided with, in the present embodiment; Described first bearing surface 161 is eccentric with tooth plate positioning boss 13 and is provided with, and described second bearing surface 162 is concentric setting with tooth plate positioning boss 13; Promptly be close to first axis hole, 11 places in the center of cavity 14 and be concaved with a spring containing cavity 15, said spring containing cavity 15 is provided with trough of spring hook 151, and trough of spring hook 151 can be provided with one, also can be provided with two, and present embodiment is preferably one.Described fluted disc 2 is a disc; The internal diameter size of the outside dimension of disc shaped fluted disc 2 and disc shaped fluted disc seat 1 adapts; Offer one second axis hole 21 in the axial centre of fluted disc 2, constitute containing cavity 22, be formed with inner ring 23, the outer ring 24 that is step-like setting around the outside of said containing cavity 22 respectively in the centre of fluted disc 2 one sides; On the circumference of said inner ring 23, convex with a limiting stopper 231 to second axis hole, 21 directions; Be formed with fitting surface 2311 at the two ends of limiting stopper 231, on the circumferential inner wall of said outer ring 24, constitute gear ring 241, in the containing cavity 22 of fluted disc 2, convex with first-class high boss 26 along complete cycle outside the hole wall of second axis hole 21; These high boss 26 are resisted against said cam bit 41 on the side of fluted disc 2 one sides, are used for preventing that cam bit 41 from rocking in the rotary course generation; On the opposite side of fluted disc 2, convex with and be used for and one group of second positioning boss 25 of chair back side plate bonded assembly, the quantity of one group of second positioning boss 25 that provides among the figure is six, but the quantity of second positioning boss 25 does not receive concrete restriction.Described driver train 4 is placed between the containing cavity 22 of cavity 14 and fluted disc 2 of fluted disc seat 1; This driver train 4 comprises cam bit 41, center shaft 42 and spring 43; The shape of said cam bit 41 does not receive any restriction; Be preferably triangle in the present embodiment, the axial centre of said cam bit 41 offers and forms protruding 412, the release blocked ear 413 of locking retaining on three corners of cam bit hole 411, cam bit 41 outer profiles respectively, and the hole shape in said cam bit hole 411 does not receive any restriction; In the present embodiment, be preferably square; Described spring 43 places in the spring containing cavity 15 of fluted disc seat 1; The outer end that the centre of spring 43 has spring eye 431, a spring 43 has the spring 432 that the trough of spring hook 151 that is used for being provided with fluted disc seat 1 matches; The hole shape of described spring eye 431 does not receive any restriction, is preferably square in the present embodiment; The vertical sectional shape of one end of described center shaft 42 is that square, axial centre is provided with center shaft axis hole 421 for the vertical sectional shape of the other end of circle, center shaft 42; Center shaft axis hole 421 is square; This center shaft axis hole 421 be used for automotive seat on spanner or connecting rod be connected; For recliner provides power resources, when mounted, the middle part of said center shaft 42 length directions is located in the cam bit hole 411 of cam bit 41; One end of center shaft 42 length directions is installed in second axis hole 21 of fluted disc 2 rotationally, is installed in rotationally in first axis hole 11 of fluted disc seat 1 behind the spring eye 431 of the other end of center shaft 42 length directions in the middle of passing spring 43.Described little tooth plate 3 has two pieces at least, can be two pieces, three pieces, four pieces etc., in the present embodiment; Be preferably three pieces; The shape of three pieces of little tooth plates 3 is identical with size, is fan-shaped, places respectively in the cavity 14 of fluted disc seat 1; Be respectively equipped with the tooth plate knock hole 32 that is used to supply 13 insertions of tooth plate positioning boss on each little tooth plate 3, each little tooth plate 3 can be that centre of gration rotates with cooresponding tooth plate positioning boss 13.Each little tooth plate 3 is used for nibbling the teeth 31 of joining mutually with gear ring 241, on fan-shaped interior circular arc, is formed with the retaining groove 36 that is used for the base 35 of matching with locking retaining protruding 412 and is used for matching with release blocked ear 413 respectively, is formed with the second locking confined planes 34 that is used for the first locking confined planes 33 that is complementary with cooresponding first bearing surface 161 and is used for being complementary with cooresponding second bearing surface 162 in fan-shaped both side ends being shaped on one section on the fan-shaped external arc respectively; Wherein the appointing of many pieces little tooth plates 3,, one piece little tooth plate 3 selecting one of which was used for the positive stop lug boss 37 that cooperates with limiting stopper 231 on the side of fluted disc 2 one sides, also having additional, the side of positive stop lug boss 37 be formed be used for limiting stopper 231 on the boss confined planes 371 that matches of fitting surface 2311.Described closed ring 5 is encapsulated in the outer perimeter of fluted disc seat 1 and fluted disc 2, and both fix with fluted disc seat 1 and fluted disc 2.

are please with reference to Fig. 1, Fig. 2, Fig. 3 and combine Fig. 4, Fig. 5 to sketch principle of work of the present invention: second positioning boss 25 of supposing first positioning boss 12, the fluted disc 2 of fluted disc seat 1 connects with seat support seat basin side plate, the chair back side plate of automotive seat respectively and finishes; So; Under normal circumstances; 1) in the time will making the angle appropriate change of the chair back; Then center shaft 42 is applied application force; Because of center shaft 42 is to be connected with the cam bit 41 and the spring 43 of driver train 4, so the rotating band moving cam piece 41 of center shaft 42 rotates to an angle, along with cam bit 41 rotates under the application force that overcomes spring 43; Then driving little tooth plate 3 by the rotation of the release blocked ear 413 on the cam bit 41 retaining groove 36 through little tooth plate 3 is that the center rotates with tooth plate positioning boss 13; Make three pieces little tooth plates 3 act in agreement ground jointly towards the center position rotation of first axis hole 11, the teeth 31 that become previous little tooth plate 3 are released state (as shown in Figure 5) with the engagement of the gear ring 241 of fluted disc 2, and can regulate this moment to the angle of the chair back.2) in case the angular adjustment of the chair back finish; When unclamping the application force that is applied on the center shaft 42; Then promptly discharged by wink owing to spring 43 previous stored energies; Driving cam bit 41 circles round towards the direction opposite with previous hand of rotation; Therefore the locking on the cam bit 41 keeps off protruding 412 the rotation base 35 through little tooth plate 3 to drive three pieces little tooth plates 3 is that circumnutation is done at the center with tooth plate positioning boss 13, and the teeth 31 on three pieces little tooth plates 3 are meshed with gear ring 241 respectively and lock (as shown in Figure 4).Under this lockup state; On the said cam bit 41 three locking retainings protruding 412 are conflicted respectively on the base 35 of three pieces of little tooth plates 3 and are formed stressed contact surface a; Therefore can guarantee that realization is meshed fully between the gear ring 241 of teeth 31 and fluted disc 2 of little tooth plate 3, guarantee the reliability of locking.3) turn to the positive stop lug boss 37 of limiting stopper 231 and little tooth plate 3 when corresponding when fluted disc 2; Force little tooth plate 3 to the 21 direction displacements of second axis hole by limiting stopper 37; Teeth 31 are broken away from gear ring 241 cooperate, be in non-lockup state this moment is neutral position, can carry out quick adjustment to the angle of the chair back.This neutral position angle can change according to demand, or the cancellation neutral position, realizes the total travel locking.

In sum, technical scheme provided by the invention has overcome the shortcoming in the prior art, has reached goal of the invention, has embodied the described technique effect of applicant

Claims

1. angle regulator for automobile chair; Comprise fluted disc seat (1), fluted disc (2), little tooth plate (3), driver train (4) and closed ring (5); It is characterized in that: described fluted disc seat (1) is disc; Offer one first axis hole (11) in the axial centre of fluted disc seat (1), on a side side of fluted disc seat (1), convex with and be used for one group of first positioning boss (12) of being connected with seat support seat basin side plate, constitute cavity (14) in the centre of fluted disc seat (1) opposite side side; In cavity (14), convex with tooth plate positioning boss (13) and support rim (16); The quantity of described tooth plate positioning boss (13) and support rim (16) has two at least, be arranged in uniform way respectively said first axis hole (11) around, and be set in distance between tooth plate positioning boss (13) and the support rim (16); Center position at cavity (14) also is concaved with a spring containing cavity (15), offers trough of spring hook (151) on the said spring containing cavity (15); Described fluted disc (2) is a disc; Offer one second axis hole (21) in the axial centre of fluted disc (2); Constitute containing cavity (22) at fluted disc (2) towards the centre of fluted disc seat (1) one side side; Be formed with inner ring (23), outer ring (24) that are step-like setting around the outside of said containing cavity (22) respectively; On the circumference of said inner ring (23), convex with limiting stopper (231), on the circumferential inner wall of said outer ring (24), constitute gear ring (241), on the opposite side of fluted disc (2), convex with and be used for and one group of second positioning boss of chair back side plate bonded assembly (25) to second axis hole (21) direction; Described driver train (4) is placed between the containing cavity (22) of cavity (14) and fluted disc (2) of fluted disc seat (1); This driver train (4) comprises cam bit (41), center shaft (42) and spring (43); The axial centre of said cam bit (41) offers and is formed with two locking retainings protruding (412) and two release blocked ears (413) on the outer profile of cam bit hole (411), cam bit (41) at least; Described spring (43) places in the spring containing cavity (15) of fluted disc seat (1); The outer end that the centre of spring (43) has spring eye (431), a spring (43) has and is used for the spring (432) that matches with trough of spring hook (151), in second axis hole (21) that the middle part that the axial centre of said center shaft (42) is provided with center shaft axis hole (421), center shaft (42) is located in the cam bit hole (411) of cam bit (41), an end of center shaft (42) is installed in fluted disc (2) rotationally, the other end of center shaft (42) is installed in after passing spring eye (431) in first axis hole (11) of fluted disc seat (1) rotationally; Described little tooth plate (3) has two pieces at least; The shape of each little tooth plate (3) is identical with size; Be fan-shaped; Place respectively in the cavity (14) of fluted disc seat (1); Be respectively equipped with the tooth plate knock hole (32) that is used to supply tooth plate positioning boss (13) insertion on each little tooth plate (3); Each little tooth plate (3) is used for nibbling the teeth (31) of joining mutually with gear ring (241), on fan-shaped interior circular arc, is formed with respectively and is used for and the retaining groove (36) that matches with release blocked ear (413) in base (35) that locking retaining protruding (412) matches and being used for being shaped on one section on the fan-shaped external arc respectively, wherein the appointing of many pieces little tooth plates (3) one piece of little tooth plate (3) of selecting one of which be used for the positive stop lug boss (37) that cooperates with limiting stopper (231) on the side of fluted disc (2) one sides, also having additional one; Described closed ring (5) is encapsulated in the outer perimeter of fluted disc seat (1) and fluted disc (2).

2. angle regulator for automobile chair according to claim 1; The outer complete cycle of the interior hole wall along second axis hole (21) of containing cavity (22) that it is characterized in that said fluted disc (2) convexes with first-class high boss (26), and these high boss (26) are resisted against said cam bit (41) on the side of fluted disc (2) one sides.

3. angle regulator for automobile chair according to claim 1; The both sides that it is characterized in that each support rim (16) on the said fluted disc seat (1) are formed with first bearing surface (161) and second bearing surface (162) with certain radian, and first bearing surface (161) on the tooth plate positioning boss (13) between adjacent two support rims (16) and above-mentioned adjacent two support rims (16) or second bearing surface (162) are eccentric and are provided with.

4. angle regulator for automobile chair according to claim 3, it is characterized in that described each little tooth plate (3) fan-shaped both side ends be formed be used for adjacent two support rims (16) on first bearing surface (161), second bearing surface (162) the first locking confined planes (33) and the second locking confined planes (34) that are complementary.

5. angle regulator for automobile chair according to claim 1; The quantity that it is characterized in that described limiting stopper (231) is one; Limiting stopper (231) is that the center is convexly equipped with on the circumference of said inner ring (23) with second axis hole (21), is formed with fitting surface (2311) at the two ends of limiting stopper (231); The side of the positive stop lug boss (37) of described little tooth plate (3) be formed be used for limiting stopper (231) on the boss confined planes (371) that matches of fitting surface (2311).

6. angle regulator for automobile chair according to claim 1; The vertical sectional shape that it is characterized in that an end of described center shaft (42) is that the vertical sectional shape of the other end of circle, center shaft (42) is square, and being shaped as of described center shaft axis hole (421) is square.

7. angle regulator for automobile chair according to claim 6, it is square to it is characterized in that being shaped as of described cam bit hole (411) is used for that the other end with said center shaft (42) is complementary.

8. angle regulator for automobile chair according to claim 6, it is square to it is characterized in that being shaped as of described spring eye (431) is used for that the other end with said center shaft (42) is complementary.

9. angle regulator for automobile chair according to claim 1 is characterized in that the quantity of described trough of spring hook (151) is one or more.