CN107962987B - Car seat back adjusts structure - Google Patents
Car seat back adjusts structure Download PDFInfo
- Publication number
- CN107962987B CN107962987B CN201711319010.1A CN201711319010A CN107962987B CN 107962987 B CN107962987 B CN 107962987B CN 201711319010 A CN201711319010 A CN 201711319010A CN 107962987 B CN107962987 B CN 107962987B
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- Prior art keywords
- pin shaft
- connecting plate
- hole
- unlocking
- fixed pin
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/224—Stepwise movement mechanisms, e.g. ratchets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/2245—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable provided with a lock mechanism on the upper part of the back-rest
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/235—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms
- B60N2/2352—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms with external pawls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/68—Seat frames
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
An automobile seat backrest adjusting structure comprises an upper connecting plate, an unlocking device and a lower connecting plate; the upper connecting plate is provided with a main pin shaft, a first fixed pin shaft, a movable pin shaft, a second fixed pin shaft and a limit pawl; the upper connecting plate and the lower connecting plate are rotatably connected through a main pin shaft; the lower connecting plate is provided with an assembly hole for installing the main pin shaft and a long waist hole concentric with the main pin shaft, and gear adjusting teeth and locking teeth concentric with the main pin shaft are arranged outside the long waist hole; the lower connecting plate is provided with a scroll spring bracket, and the bracket is provided with a scroll spring. The structure can realize multi-gear adjustment, and has the advantages of simple structure, high reliability and lower cost.
Description
Technical Field
The invention relates to the field of automobile devices, in particular to an automobile seat backrest adjusting structure.
Background
With the development of the automobile industry and the application of new technology and the improvement of the living standard of people, automobiles have been stepped into thousands of households and become an indispensable riding tool. The global automobile market in 2016 reaches 9497.66 thousands, wherein the Chinese automobile sales exceeds 2800 thousands, and 8 years of continuous worldwide production is the first. With the increase of automobile production and marketing, market competition is also increasing.
Automotive seats are an important component of automotive interiors, carrying an important function of supporting occupants and providing safety protection. The seat with good comfort and functionality can help the whole car to occupy an advantage in market competition. In order to facilitate the ingress and egress of passengers and ensure a larger storage space of the trunk, the backrest is folded and turned over to be a necessary function of the automobile seat, and a core component for realizing the folding and turning over of the seat is a seat backrest adjusting structure.
At present, seat back adjusting structures in the market mainly have two structures:
1. the novel automobile seat backrest is controlled by using an angle adjuster, as disclosed in patent CN20161013758. X, the structure has high mechanical strength and can realize the function of multi-gear adjustment, but the structure is complex, and the production cost is high;
2. the use of a web control, as disclosed in patent CN201410199327.6, is a vehicle seat back adjustment device of the type which is relatively simple in structure but low in mechanical strength and incapable of achieving a multi-speed adjustment function.
Disclosure of Invention
The invention aims to provide an automobile seat backrest adjusting structure which realizes multi-gear adjustment and is simple in structure.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a car seat back adjusting structure, support adjusting structure includes upper junction plate, unlocking device, unblock cable and lower connecting plate, lower connecting plate and car seat's cushion skeleton stationary phase is connected, the lower extreme of upper junction plate articulates on lower connecting plate, upper end and car seat's back skeleton stationary phase is connected, unlocking device set up on the top of back skeleton, the one end and the unlocking device of unblock cable are connected, by the action of unlocking device control unblock cable, the other end runs through back skeleton and sets up on the upper junction plate, the upper junction plate under unlocking device, unblock cable and exogenic action, have locking and rotation two kinds of states for lower connecting plate, the upper junction plate can drive back skeleton synchronous rotation at the rotation in-process to this is adjusted the seat back.
Preferably, the upper connecting plate is provided with a main pin shaft, a first fixed pin shaft, a movable pin shaft, a second fixed pin shaft and a limiting pawl, and is also provided with a short waist hole;
the outer side of the first fixed pin shaft is sleeved with a first reset spring, one end of the first fixed pin shaft is arranged on a first pin shaft hole of the upper connecting plate, and the other end of the first fixed pin shaft is arranged on the baffle plate;
one end of the movable pin shaft is a pin shaft boss, the pin shaft boss is arranged in a short waist hole of the upper connecting plate, and the diameter of the pin shaft boss is larger than that of the short waist hole; the other end of the movable pin shaft penetrates through the pawl groove, the front swing arm small hole and the baffle plate and then is matched with the inhaul cable head through hole;
one end of the second fixed pin shaft penetrates through the pawl through hole and the second pin shaft hole, and the other end of the second fixed pin shaft is arranged on the baffle plate;
the reset spring is arranged on the first fixed pin shaft, one end of the reset spring is matched with the movable pin shaft, and the other end of the reset spring is connected with the baffle groove of the baffle;
a front swing arm small hole for installing a movable pin shaft is formed in one end of the front swing arm; the other end is provided with a front swing arm big hole for installing a first fixed pin shaft;
the limiting pawl is provided with a pawl through hole and a pawl groove; one end of the limit pawl is provided with a limit ratchet; a movable pin roll is arranged in the pawl groove;
the upper connecting plate and the lower connecting plate are rotatably connected through a main pin shaft;
the lower connecting plate is provided with an assembly hole for installing the main pin shaft and a long waist hole concentric with the main pin shaft; gear adjusting teeth and locking teeth which are concentric with the assembly holes are arranged outside the long waist holes;
the gear adjusting teeth and the locking teeth are positioned on the same circumference; the gear adjusting teeth are at least four and are distributed in an arc shape; the automobile seat backrest adjusting structure has at least four using gears;
when the gear adjusting teeth are meshed with the limiting ratchets on the limiting pawls, the automobile seat backrest is in a use state;
when the locking teeth are meshed with the limiting ratchet teeth on the limiting pawl, the automobile seat back is in a locking state, and the seat back is in a retracted state;
the lower connecting plate is provided with a scroll spring bracket; the scroll spring bracket is provided with a scroll spring; one end of the scroll spring is connected with a fifth fixed pin shaft, and the other end of the scroll spring is fixed on the scroll spring bracket;
the fifth fixed pin shaft penetrates through the long waist hole of the lower connecting plate and the fifth pin shaft hole of the upper connecting plate;
the lower connecting plate is provided with a fourth pin shaft hole for installing a fourth fixed pin shaft;
one end of the fourth pin shaft is arranged on the lower connecting plate, and the other end of the fourth pin shaft is matched with a rear swing arm groove on the rear swing arm;
one end of the rear swing arm is provided with a through hole matched with the movable pin shaft, the middle of the rear swing arm is provided with a through hole matched with the third fixed pin shaft, and the other end of the rear swing arm is provided with a rear swing arm groove for accommodating the fourth fixed pin shaft; the number of the rear swing arm grooves is consistent with the number of the gears used;
a second reset spring is arranged on the third fixed pin shaft, one end of the second reset spring is arranged on the rear swing arm, and the other end of the second reset spring is arranged on the lower connecting plate;
the unlocking device comprises an unlocking buckle hand and an unlocking bracket, and the lower end of the unlocking buckle hand is connected with an unlocking inhaul cable; the unlocking buckle is arranged on an unlocking bracket, and the unlocking bracket is arranged on the backrest framework;
the unlocking inhaul cable is arranged at one end of the upper connecting plate, and an inhaul cable head through hole for accommodating the movable pin shaft is formed in the inhaul cable head.
Preferably, the support adjusting structure further comprises a backrest framework and a cushion framework, and the upper connecting plate is connected with the backrest framework through a mounting bolt in a through hole of the upper framework; the lower connecting plate is connected with the framework connecting plate through a mounting bolt in a lower framework through hole, and the framework connecting plate is connected with the cushion framework.
Preferably, one end of the fourth fixed pin shaft is arranged in a fourth pin shaft hole on the lower connecting plate, and the other end of the fourth fixed pin shaft is matched with a rear swing arm groove on the rear swing arm.
Preferably, one end of the cable head is further provided with a cable primary adjustment, the upper connecting plate is provided with a cable fixing support, and the cable primary adjustment is fixed on the cable fixing support.
Compared with the prior art, the invention has the following beneficial effects:
1) The invention can realize multi-gear adjustment, and has simple structure, high reliability and lower cost.
2) The invention is suitable for most seat frameworks on the market by changing the structures of the upper connecting plate and the lower connecting plate, and has good universality.
Drawings
FIG. 1 is a block diagram of a seat mounted seat back adjustment structure of an automotive seat back adjustment structure of the present invention;
FIG. 2 is a block diagram of the vehicle seat back adjustment structure of the present invention with the baffle and seat frame removed;
FIG. 3 is a view showing the construction of the inner side of the seat back adjustment structure of the automobile seat according to the present invention;
FIG. 4 is an exploded view of the upper web and portions of the components of the present invention for the seat back adjustment structure;
FIG. 5 is a schematic view of the structure of the upper and lower link plate portions of the present invention for an adjustment mechanism for a vehicle seat back;
FIG. 6 is a schematic view of the lower link plate structure of the present invention for an adjustment structure for a car seat back.
In the figure: 1 a backrest framework; 2-an upper connecting plate; 201-short waist hole; 202-an upper framework through hole; 203-a guy cable fixing bracket; 204-a first pin bore; 205-a second pin bore; 206-an upper connecting plate main pin shaft mounting hole; 207-fifth pin hole; 3-unlocking means; 4, unlocking a guy cable; 401-first-stage adjustment of a guy cable; 402-adjusting a guy cable; 403-a cable head; 4031-cable head through hole; 5-a cushion framework; 6-a lower connecting plate; 601-gear adjusting teeth; 602-a long waist hole; 603-fitting holes; 604-locking teeth; 605-lower skeleton through holes; 7-a main pin shaft; 8-baffle plates; 801-baffle grooves; 9-a first fixed pin shaft; 10-a movable pin shaft; 1001-pin boss; 11-a second fixed pin shaft; 12-a first return spring; 13-a front swing arm; 14-limiting pawls; 1401-limit ratchet; 1402-detent through hole; 1403-detent groove; 15-a second return spring; 16-a third fixed pin shaft; 17-a rear swing arm; 1701-rear swing arm groove; 18-a fourth fixed pin shaft; 19-a fifth fixed pin shaft; 20-scroll springs; 21-unlocking a buckle; 22-unlocking the bracket; 23-scroll spring holder; 24-skeleton connecting plates.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the invention, so that those skilled in the art may better understand the invention and practice it.
As shown in fig. 1 to 6, the automobile seat backrest adjusting structure of the invention comprises a backrest framework 1, an upper connecting plate 2, an unlocking device 3, an unlocking inhaul cable 4, a cushion framework 5 and a lower connecting plate 6;
the lower connecting plate 6 is fixedly connected with the cushion framework 5 of the automobile seat, the lower end of the upper connecting plate 2 is hinged to the lower connecting plate 6, the upper end of the upper connecting plate is fixedly connected with the backrest framework 1 of the automobile seat, the unlocking device 3 is arranged at the top end of the backrest framework 1, one end of the unlocking inhaul cable 4 is connected with the unlocking device 3, the unlocking device 3 controls the unlocking inhaul cable 4 to act, the other end of the unlocking inhaul cable penetrates through the backrest framework 1 and then is arranged on the upper connecting plate 2, the upper connecting plate 2 is in a locking and rotating state relative to the lower connecting plate 6 under the action of the unlocking device 3, the unlocking inhaul cable 4 and external force, and the upper connecting plate 2 can drive the backrest framework 1 to synchronously rotate in the rotating process so as to adjust the backrest of the automobile seat.
The upper connecting plate 2 is connected with the backrest framework 1 through a mounting bolt in the upper framework through hole 202; the lower connecting plate 6 is connected with the framework connecting plate 24 through a mounting bolt in the lower framework through hole 605, and the framework connecting plate 24 is connected with the cushion framework 5.
The upper connecting plate 2 is provided with a main pin shaft 7, a first fixed pin shaft 9, a movable pin shaft 10, a second fixed pin shaft 11 and a limit pawl 14; the upper connecting plate 2 is provided with an upper connecting plate main pin shaft mounting hole 206 for mounting the main pin shaft 7;
the outer side of the first fixed pin shaft 9 is sleeved with a first reset spring 12, one end of the first fixed pin shaft 9 is installed on a first pin shaft hole 204 of the upper connecting plate 2, and the other end of the first fixed pin shaft 9 is installed on the baffle plate 8;
one end of the movable pin 10 is a pin boss 1001, the pin boss 1001 is arranged in the short waist hole 201 of the upper connecting plate 2, and the diameter of the pin boss 1001 is larger than that of the short waist hole 201; the other end of the movable pin shaft 10 passes through the pawl groove 1403, the front swing arm small hole 1302 and the baffle 8 and is finally arranged on the stay cable head through hole 4031;
the movement range of the movable pin shaft 10 is limited in the short waist hole 201, and the limiting pawl 14, the front swing arm 13 and the rear swing arm 17 are driven to move;
one end of the second fixed pin 11 passes through the pawl through hole 1402, the second pin hole 205, and then the other end is mounted on the baffle plate 8;
the reset spring 12 is arranged on the first fixed pin shaft 9, one end of the reset spring is connected with the movable pin shaft 10, and the other end of the reset spring is connected with the baffle groove 801 of the baffle 8;
a front swing arm small hole 1032 for installing the movable pin shaft 10 is formed in one end of the front swing arm 13, and a front swing arm large hole 1031 for installing the first fixed pin shaft 9 is formed in the other end of the front swing arm;
a pawl through hole 1402 and a pawl groove 1403 are arranged on the limit pawl 14, a limit ratchet 1401 is arranged on one end of the limit pawl 14, and a movable pin shaft 10 is arranged in the pawl groove 1403;
the upper connecting plate 2 and the lower connecting plate 6 are rotatably connected through a main pin shaft 7;
the lower connecting plate 6 is provided with an assembly hole 603 for installing the main pin shaft 7 and a long waist hole 602 concentric with the main pin shaft 7, and gear adjusting teeth 601 and locking teeth 604 concentric with the main pin shaft 7 are arranged outside the long waist hole 602;
the gear adjusting teeth 601 and the locking teeth 604 are positioned on the same circumference, and the gear adjusting teeth 601 are four and are distributed in an arc shape, namely five grooves, so that the automobile seat backrest adjusting structure has four using gears;
when the gear adjusting teeth 601 are mutually meshed with the limit ratchet teeth 1401 on the limit pawl 14, the automobile seat backrest is in a use state;
when the locking tooth 604 is intermeshed with the limit ratchet 1401 on the limit pawl 14, the present car seat back is in the stowed condition.
A scroll spring bracket 23 is mounted on the lower connecting plate 6, and a scroll spring 20 is mounted on the scroll spring bracket 23. One end of the scroll spring 20 is connected with the fifth fixed pin 19, and the other end is fixed on the scroll spring bracket 23;
the fifth fixed pin 19 passes through the long waist hole 602 of the lower connecting plate 6 and is arranged on the fifth pin shaft hole 207 of the upper connecting plate 2;
the lower connecting plate 6 is provided with a fourth pin shaft hole 606 for installing a fourth fixed pin shaft 18;
one end of the fourth pin shaft 18 is arranged in a fourth pin shaft hole 606 on the lower connecting plate 6, and the other end of the fourth pin shaft is matched with a rear swing arm groove 1701 on the rear swing arm 17;
one end of the rear swing arm 17 is provided with a through hole for installing the movable pin shaft 10, the middle is provided with a through hole matched with the third fixed pin shaft 16, the other end is provided with rear swing arm grooves 1701 for accommodating the fourth fixed pin shaft 18, and the number of the rear swing arm grooves 1701 is four;
a second reset spring 15 is arranged on the third fixed pin shaft 16, one end of the second reset spring 15 is arranged on the rear swing arm 8, and the other end is arranged on the lower connecting plate 6;
the unlocking device 3 comprises an unlocking buckle hand 21 and an unlocking bracket 22, and the lower end of the unlocking buckle hand 21 is connected with the unlocking inhaul cable 4; the unlocking buckle 21 is mounted on an unlocking bracket 22, and the unlocking bracket 22 is mounted on the backrest frame 1.
One end of the unlocking inhaul cable 4 and the unlocking device 3 are provided with an inhaul cable head 403, and the inhaul cable head 403 is provided with an inhaul cable head through hole 4031 for accommodating the movable pin shaft 10; one end of the cable head 403 is also provided with a cable primary adjustment 401; the first-stage cable adjustment 401 is fixed on the cable fixing bracket 203 of the upper connecting plate 2.
The working principle of the invention is as follows:
as shown in fig. 2, when the present structure is in the first gear for use, the limit ratchet 1401 of the limit pawl 14 is engaged with the forefront gear adjusting tooth 601 on the outside; on the inside, the fourth fixed pin 18 is located in the lowermost rear swing arm recess 1701 of the rear swing arm 17;
when the front or back adjustment to another use gear is needed, the unlocking buckle 21 is pulled firstly, the movable pin 10 is dragged to move upwards in the short waist hole 201 through the conduction of the unlocking inhaul cable 4, the movable pin 10 drives the limit pawl 14 to rotate around the second fixed pin 11, and the rear swing arm 17 rotates around the third fixed pin 16; the limit ratchet 1401 is separated from the gear adjusting tooth 601, and the rear swing arm groove 1701 is separated from the fourth fixed pin 18; at this time, the first return spring 12 mounted on the first fixed pin 9 is compressed, and the second return spring 15 mounted on the third fixed pin 16 is also compressed;
when the gear is adjusted to the required use gear, the unlocking buckle 21 is loosened, the first reset spring 12 and the second reset spring 15 are reset, so that the movable pin shaft 10 moves downwards to drive other parts to reset, the limiting ratchet 1401 is meshed with the gear adjusting tooth 601 again, and the fourth fixed pin shaft 18 is positioned in the other rear swing arm groove 1701;
when the structure needs to be adjusted from a use gear to a backrest which is folded forwards and is in a locking gear, the working principle is similar to that of the adjustment gear; the difference is that the backrest needs to be rotated forward to a position where the limit ratchet 1401 is engaged with the locking tooth 604, and the rear swing arm 17 is separated from the fourth fixed pin 18.
When the gear is shifted from the lock gear to the use gear, the operation is consistent with the shift from the use gear to the lock gear.
The spiral spring 20 mounted on the lower connecting plate 6 is in an unstressed state when the gear is locked, is compressed when the gear is used in any one of the gear, and provides forward (clockwise) rotation torque for the stressed state.
The upper frame through hole 202 on the upper connecting plate 2 and the lower frame through hole 605 on the lower connecting plate 6 are used for installing the seat frame, and the holes include, but are not limited to, bolts, rivets and pin shafts, so long as the installation is firmly in accordance with the relevant standards, and the frame connecting plate 24 is used for connecting the lower connecting plate 6 and the seat cushion frame 5.
The above-mentioned embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and all kinds of modifications, substitutions or alterations made to the above-mentioned structures of the present invention according to the above-mentioned general knowledge and conventional means of the art without departing from the basic technical ideas of the present invention shall fall within the scope of the present invention.
Claims (2)
1. An automobile seat back adjusting structure, which is characterized in that: the backrest adjusting structure comprises an upper connecting plate (2), an unlocking device (3), an unlocking inhaul cable (4) and a lower connecting plate (6), wherein the lower connecting plate (6) is fixedly connected with a cushion framework (5) of the automobile seat, the lower end of the upper connecting plate (2) is hinged to the lower connecting plate (6), the upper end of the upper connecting plate is fixedly connected with a backrest framework (1) of the automobile seat, the unlocking device (3) is arranged at the top end of the backrest framework (1), one end of the unlocking inhaul cable (4) is connected with the unlocking device (3), the unlocking inhaul cable (4) is controlled by the unlocking device (3) to act, the other end of the unlocking inhaul cable (4) is arranged on the upper connecting plate (2) after penetrating through the backrest framework (1), and the upper connecting plate (2) is in a locking state and a rotating state relative to the lower connecting plate (6) under the action of the unlocking device (4) and the external force, and the upper connecting plate (2) can drive the backrest framework (1) to rotate synchronously in the rotating process so as to adjust a backrest of the seat;
the upper connecting plate (2) is provided with a main pin shaft (7), a first fixed pin shaft (9), a movable pin shaft (10), a second fixed pin shaft (11) and a limiting pawl (14), and the upper connecting plate (2) is also provided with a short waist hole (201);
a first reset spring (12) is sleeved outside the first fixed pin shaft (9), one end of the first fixed pin shaft (9) is arranged on a first pin shaft hole (204) of the upper connecting plate (2), and the other end of the first fixed pin shaft is arranged on the baffle (8);
one end of the movable pin shaft (10) is a pin shaft boss (1001), the pin shaft boss (1001) is arranged in a short waist hole (201) of the upper connecting plate (2), and the diameter of the pin shaft boss (1001) is larger than that of the short waist hole (201);
one end of the second fixed pin shaft (11) passes through the pawl through hole (1402) and the second pin shaft hole (205), and the other end of the second fixed pin shaft is arranged on the baffle plate (8);
the first reset spring (12) is arranged on the first fixed pin shaft (9), one end of the first reset spring is matched with the movable pin shaft (10), and the other end of the first reset spring is connected with the baffle groove (801) of the baffle (8);
a front swing arm small hole (1032) for installing the movable pin shaft (10) is arranged at one end of the front swing arm (13); the other end is provided with a front swing arm big hole (1031) for installing a first fixed pin shaft (9);
a pawl through hole (1402) and a pawl groove (1403) are formed in the limiting pawl (14); one end of the limit pawl (14) is provided with a limit ratchet (1401); a movable pin shaft (10) is arranged in the pawl groove (1403);
the upper connecting plate (2) and the lower connecting plate (6) are rotatably connected through a main pin shaft (7);
the lower connecting plate (6) is provided with an assembly hole (603) for installing the main pin shaft (7) and a long waist hole (602) concentric with the main pin shaft (7); gear adjusting teeth (601) and locking teeth (604) concentric with the assembly holes (603) are arranged outside the long waist holes (602);
the gear adjusting teeth (601) and the locking teeth (604) are positioned on the same circumference; the gear adjusting teeth (601) are at least four and are arranged in an arc shape; the automobile seat backrest adjusting structure has at least four using gears;
when the gear adjusting teeth (601) are meshed with the limit ratchets (1401) on the limit pawls (14), the automobile seat backrest is in a use state;
when the locking teeth (604) are mutually meshed with the limit ratchets (1401) on the limit pawls (14), the automobile seat back is in a locking state, and the seat back is in a retracted state;
the lower connecting plate (6) is provided with a spiral spring bracket (23); the scroll spring bracket (23) is provided with a scroll spring (20); one end of the scroll spring (20) is connected with a fifth fixed pin shaft (19), and the other end of the scroll spring is fixed on the scroll spring bracket (23);
the fifth fixed pin shaft (19) passes through a long waist hole (602) of the lower connecting plate (6) and a fifth pin shaft hole (207) of the upper connecting plate (2);
a fourth pin shaft hole (606) for installing a fourth fixed pin shaft (18) is formed in the lower connecting plate (6);
one end of the fourth fixed pin shaft (18) is arranged on the lower connecting plate (6), and the other end of the fourth fixed pin shaft is matched with a rear swing arm groove (1701) on the rear swing arm (17);
one end of the rear swing arm (17) is provided with a through hole matched with the movable pin shaft (10), the middle is provided with a through hole matched with the third fixed pin shaft (16), and the other end is provided with a rear swing arm groove (1701) for accommodating the fourth fixed pin shaft (18); the number of the rear swing arm grooves (1701) is consistent with the number of the using gears;
a second reset spring (15) is arranged on the third fixed pin shaft (16), one end of the second reset spring (15) is arranged on the rear swing arm (17), and the other end of the second reset spring is arranged on the lower connecting plate (6);
the unlocking device (3) comprises an unlocking buckle (21) and an unlocking bracket (22), and the lower end of the unlocking buckle (21) is connected with an unlocking inhaul cable (4); the unlocking buckle (21) is arranged on the unlocking bracket (22), and the unlocking bracket (22) is arranged on the backrest framework (1);
the unlocking inhaul cable (4) is arranged at one end of the upper connecting plate (2) and is provided with an inhaul cable head (403), and the inhaul cable head (403) is provided with an inhaul cable head through hole (4031) for accommodating the movable pin shaft (10);
the other end of the movable pin shaft (10) passes through the pawl groove (1403), the front swing arm small hole (1302) and the baffle (8) and then is matched with the inhaul cable head through hole (4031);
the backrest adjusting structure further comprises a backrest framework (1) and a cushion framework (5), and the upper connecting plate (2) is connected with the backrest framework (1) through an installation bolt in an upper framework through hole (202); the lower connecting plate (6) is connected with the framework connecting plate (24) through a mounting bolt in the lower framework through hole (605), and the framework connecting plate (24) is connected with the cushion framework (5);
one end of the fourth fixed pin shaft (18) is arranged in a fourth pin shaft hole (606) on the lower connecting plate (6), and the other end of the fourth fixed pin shaft is matched with a rear swing arm groove (1701) on the rear swing arm (17).
2. The automobile seat back adjustment structure according to claim 1, characterized in that: one end of the cable head (403) is also provided with a cable primary adjusting device (401), the upper connecting plate (2) is provided with a cable fixing support (203), and the cable primary adjusting device (401) is fixed on the cable fixing support (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319010.1A CN107962987B (en) | 2017-12-12 | 2017-12-12 | Car seat back adjusts structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319010.1A CN107962987B (en) | 2017-12-12 | 2017-12-12 | Car seat back adjusts structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107962987A CN107962987A (en) | 2018-04-27 |
| CN107962987B true CN107962987B (en) | 2023-07-21 |
Family
ID=61995329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711319010.1A Active CN107962987B (en) | 2017-12-12 | 2017-12-12 | Car seat back adjusts structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107962987B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10618436B2 (en) * | 2018-09-13 | 2020-04-14 | Lear Corporation | Seating arrangement having a reclinable seat back |
| CN110329122B (en) * | 2019-07-19 | 2024-04-16 | 浙江天成自控股份有限公司 | Quick release mechanism for automobile seat |
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