CN119348519A - A flip locking mechanism for a car seat back - Google Patents
A flip locking mechanism for a car seat back Download PDFInfo
- Publication number
- CN119348519A CN119348519A CN202411908303.3A CN202411908303A CN119348519A CN 119348519 A CN119348519 A CN 119348519A CN 202411908303 A CN202411908303 A CN 202411908303A CN 119348519 A CN119348519 A CN 119348519A
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- China
- Prior art keywords
- locking
- locking piece
- hinge
- shaft
- lock
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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
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/32—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles convertible for other use
- B60N2/36—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles convertible for other use into a loading platform
- B60N2/366—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles convertible for other use into a loading platform characterised by the locking device
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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
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention relates to a turnover locking mechanism of a backrest of an automobile seat, which comprises a seat frame, two hinge assemblies symmetrically arranged on the left side and the right side of the seat frame, a locking shaft and a locking assembly, wherein the hinge assemblies comprise hinge strips rotatably connected to the left side outer wall or the right side outer wall of the seat frame, and locking shafts transversely fixed on the corresponding side outer walls of the seat frame and positioned behind the rotation axes of the hinge strips for supporting and positioning the hinge strips, the locking assembly is arranged between one hinge strip and the seat frame, the locking assembly comprises a locking piece, the middle part of the locking piece is rotatably connected to the outer wall of one hinge strip and always has a clockwise elastic reset rotation trend, and the invention omits the need of installing an angle adjuster on the premise of ensuring the safety performance of the automobile seat, thereby effectively reducing the manufacturing cost and also effectively reducing the assembly difficulty so as to improve the assembly efficiency.
Description
Technical Field
The application relates to the technical field of automobile seats, in particular to a turnover locking mechanism of an automobile seat backrest.
Background
In recent years, global new energy automobiles are rapidly developed, with the addition of various new forces for making automobiles, price competition in the automobile industry is increasingly strong, manufacturers begin to focus on cost control of the new energy automobiles, and products meeting demands of various income groups are manufactured at the lowest cost, so that the core competitiveness of the products is increased.
In order to ensure the safe driving performance of the automobile, parts related to the safe driving performance of the automobile cannot be reduced, so that manufacturers can only start from other parts which do not influence the safe driving performance of the automobile to reduce the manufacturing cost of the automobile, and the automobile seat is one aspect capable of controlling the manufacturing cost.
Like traditional fuel car, the seat cushion on the present new energy automobile also can overturn forward when required and put flat in order to enlarge the interior space temporarily, and then be used for transporting some great article of volume, but current car seat cushion is in order to realize above-mentioned upset effect of putting flat must install the angle modulation ware on the seat cushion, though the angle modulation ware has been comparatively popular, but because its inner structure is comparatively complicated, so manufacturing cost still is higher, and the assembly degree of difficulty is great moreover, because must pass through multichannel welding, riveting technology just can fix it on the seat skeleton, the operation step is comparatively loaded down with trivial details, it is lower to lead to assembly efficiency.
Thus, waiting for a solution is needed.
Disclosure of Invention
The invention aims at solving the current state of the art, and provides a turnover locking mechanism of a vehicle seat backrest, which can effectively reduce manufacturing cost and assembly difficulty on the premise of ensuring safety performance of the vehicle seat and improve assembly efficiency.
The invention solves the technical problems by adopting the technical scheme that the turnover locking mechanism of the automobile seat backrest is characterized by comprising a seat frame and two hinge assemblies symmetrically arranged at the left side and the right side of the seat frame, wherein the hinge assemblies comprise hinge strips rotatably connected to the outer wall at the left side or the right side of the seat frame and locking shafts transversely fixed on the outer wall at the corresponding side of the seat frame and positioned behind the rotation axis of the hinge strips for supporting and positioning the hinge strips;
The locking assembly is arranged between one of the hinge chains and the seat frame;
The locking assembly comprises a locking piece, wherein the middle part of the locking piece is rotatably connected to the outer wall of one of the hinge chains and always has a tendency of elastic reset rotation in the clockwise direction;
When the hinge strip rotates clockwise to the upper part of one locking shaft on the same side and is blocked by the locking shaft so as not to continue rotating, the lower end of the locking piece is arranged at the rear part of the locking shaft and can be detachably fixed on the locking shaft by utilizing the tendency of the clockwise elastic force of the locking piece to reset and rotate;
When the upper end of the locking piece rotates anticlockwise, the lower end of the locking piece can overcome the tendency of clockwise elastic force reset rotation of the lower end of the locking piece and separate from the locking shaft;
the locking assembly further comprises a handle fixed at the upper end of the locking piece.
Preferably, a locking groove is formed in the lower end of the locking piece towards one side edge of the locking shaft, the inner width of the locking groove is matched with the outer diameter of the locking shaft, and the opening of the locking groove is matched with the position of the locking shaft.
Preferably, when the hinge strip rotates clockwise to the upper part of one locking shaft on the same side and is blocked by the locking shaft so as not to continue rotating, the locking groove on the locking piece can be detachably buckled outside the locking shaft by utilizing the clockwise elastic force of the locking piece, and when the locking groove is buckled outside the locking shaft, the opening part of the locking groove is transversely forwards or obliquely forwards and upwards arranged.
Preferably, the locking assembly further comprises a limiting pin transversely fixed on the outer wall of one side of the hinge close to the locking piece and located above the rear of the rotation axis of the locking piece, correspondingly, a V-shaped notch higher than the rotation axis of the locking piece is formed in one side edge of the locking piece towards the limiting pin, the inner wall of the upper side of the V-shaped notch is matched with the limiting pin, and a first arc-shaped limiting surface matched with the limiting pin is formed between the lower side edge of the opening of the V-shaped notch and the outer wall of one side where the V-shaped notch is located.
Preferably, the locking assembly further comprises a rotating shaft which is transversely and rotatably connected in the locking piece in a penetrating mode, the central axis of the rotating shaft coincides with the rotation axis of the locking piece, and one end, facing the hinge chain, of the rotating shaft is fixed on the outer wall, close to the locking piece, of the side, on the hinge chain.
Preferably, the locking assembly further comprises a torsion spring sleeved on the rotating shaft and arranged between the hinge chain and the locking piece, and two ends of the torsion spring are respectively fixed on the locking piece and the limiting pin so that the locking piece always has a trend of elastic reset rotation in the clockwise direction.
Preferably, the locking assembly further comprises a safety switch, the safety switch comprises a rotary sleeve which is concentrically and rotationally connected to the rotating shaft in a damping manner and is positioned outside one side of the locking piece, which is opposite to the hinge chain, a first connecting rod which is fixed on the outer circumferential surface of the front side of the rotary sleeve, a sliding block which is movably connected in the hinge chain so as to have a function of radially and reciprocally moving along the rotating shaft, a second connecting rod which is rotatably connected to the sliding block and is positioned on the same side as the locking piece, and a limit post which is transversely fixed to the sliding block and is positioned behind the second connecting rod, and the end part of the second connecting rod is rotatably connected to the end part of the first connecting rod.
Preferably, the front side edge of the middle part of the locking piece is provided with an arc-shaped guide surface which is arranged concentrically with the rotation axis of the locking piece and positioned at the front lower part of the rotation axis of the locking piece, the arc-shaped guide surface is also provided with limit notches which are distributed radially, and the positions and the widths of the limit notches are matched with the positions and the outer diameters of the limit posts.
Preferably, the middle part of hinge strip has seted up the through-hole, the one end towards the hinge strip of rotation axis inserts to be fixed in the through-hole, still set up radial distributed's guide way on the front downside inner wall of through-hole, the slider activity embedding is in the guide way.
Preferably, the safety switch further comprises two pressing plates which are respectively fixed on the outer walls of the left side and the right side of the sliding block and respectively and slidably attached to the outer walls of the left side and the right side of the hinge strip, and the second connecting rod is rotatably connected to one pressing plate positioned on the same side of the locking piece.
Compared with the prior art, the automobile seat cushion locking and unlocking device has the advantages that the locking and unlocking control effect on the overturning state of the automobile seat cushion is achieved by means of the locking component which is simple in structure and convenient to manufacture, the seat cushion can be effectively supported and positioned to ensure the firmness of the seat and prevent the seat cushion from being loosened accidentally due to external force, and further the requirement of installing the angle adjuster is omitted on the premise of ensuring the safety performance of the automobile seat, so that the manufacturing cost is effectively reduced, and the assembly difficulty is effectively reduced to improve the assembly efficiency.
Drawings
The above and other features, advantages, and aspects of embodiments of the present application will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings in which like or similar reference characters designate the same or similar elements throughout the several views, wherein it is to be understood that the drawings are schematic and that the elements are not necessarily drawn to scale:
Fig. 1 is a right-side view of the structure of the present invention.
Fig. 2 is a right-side view of the locking piece of the present invention.
Fig. 3 is a right-side view of the hinge chain of the present invention.
Fig. 4 is a right-side view of the safety switch of the present invention.
Fig. 5 is a front view of the block and platen of the present invention.
Fig. 6 is a right-side view of the locking piece of the present invention when the rotation of the locking piece is restricted by the safety switch.
Detailed Description
Embodiments of the present application will now be described in more detail with reference to the accompanying drawings, wherein certain embodiments of the application are shown, however, it is to be understood that the application may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the application, and it is to be understood that the drawings and embodiments of the application are merely illustrative and are not intended to limit the scope of the application.
It should be understood that the various steps recited in the method embodiments of the present application may be performed in a different order and/or performed in parallel. Furthermore, method embodiments may include additional steps and/or omit performing the illustrated steps, as the scope of the present application is not limited in this respect.
The term "including" and variations thereof as used herein are intended to be open-ended, i.e., including, but not limited to. The term "based on" is based at least in part on. The term "one embodiment" means "at least one embodiment", the term "another embodiment" means "at least one further embodiment", the term "some embodiments" means "at least some embodiments", and related definitions of other terms will be given in the following description.
It should be noted that the terms "first," "second," and the like herein are merely used for distinguishing between different devices, modules, or units and not for limiting the order or interdependence of the functions performed by such devices, modules, or units.
It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those skilled in the art will appreciate that "one or more" is intended to be construed as "one or more" unless the context clearly indicates otherwise.
As shown in fig. 1 to 6, a turnover locking mechanism of a backrest of an automobile seat comprises a seat frame 1 and two hinge assemblies symmetrically arranged at the left side and the right side of the seat frame 1, wherein the hinge assemblies comprise hinge strips 2 rotatably connected to the outer walls at the left side or the right side of the seat frame 1 and locking shafts 4 transversely fixed on the outer walls at the corresponding sides of the seat frame 1 and positioned behind the rotation axes of the hinge strips 2 for supporting and positioning the hinge strips 2;
When the end part of the hinge chain 2 rotates clockwise to the upper part of the locking shaft 4, the hinge strip 2 is blocked by the locking shaft 4 and cannot rotate continuously to play a role in positioning, the outer wall of one side of the hinge strip 2 facing the locking shaft 4 is pressed against the locking shaft 4, and when the hinge strip 2 receives pressure from the back of a passenger, the locking shaft 4 can play a role in effectively supporting the hinge strip 2;
the device also comprises a locking component arranged between one of the hinge chains 2 and the seat frame 1;
The locking component comprises a locking piece 3, wherein the middle part of the locking piece 3 is rotatably connected to the outer wall of one of the hinge chains 2 and always has a clockwise elastic reset rotation trend;
When the hinge chain 2 rotates clockwise to the upper part of one locking shaft 4 on the same side and is blocked by the locking shaft 4 so as not to continue rotating, the lower end of the locking piece 3 is arranged behind the locking shaft 4 and can be detachably fixed on the locking shaft 4 by utilizing the tendency of the clockwise elastic force of the lower end of the locking piece;
When the upper end of the locking piece 3 rotates counterclockwise, the lower end of the locking piece 3 can overcome the tendency of the clockwise elastic force of the lower end to reset and rotate and separate from the locking shaft 4.
The lower end of the locking piece 3 is provided with a locking groove 31 towards one side edge of the locking shaft 4, the inner width of the locking groove 31 is matched with the outer diameter of the locking shaft 4, and the opening of the locking groove 31 is matched with the position of the locking shaft 4.
When the hinge chain 2 rotates clockwise to the upper part of one locking shaft 4 on the same side and is blocked by the locking shaft 4 so as not to continue rotating, the locking groove 31 on the locking piece 3 can be detachably buckled outside the locking shaft 4 by utilizing the clockwise elastic force of the locking piece 3 to reset the rotating trend.
When the locking groove 31 is buckled outside the locking shaft 4, the opening of the locking groove 31 is transversely arranged forwards or obliquely arranged forwards and upwards, but cannot be obliquely arranged forwards and downwards, because if the hinge chain 2 is accidentally subjected to forward pushing force, the pushing force can generate forward and upwards pulling force on the locking piece 3 by means of the rotating connection relation of the hinge chain 2 and the seat frame 1, and if the opening of the locking groove 31 is obliquely arranged forwards and downwards, the locking shaft 4 forces the lower end of the locking piece 3 to rotate anticlockwise without permission, so that the locking groove 31 is separated from the locking shaft 4.
The locking assembly further comprises a limiting pin 5 transversely fixed on the outer wall of one side of the hinge chain 2, which is close to the locking piece 3, and positioned above the rear of the rotation axis of the locking piece 3, and correspondingly, a V-shaped notch 32 higher than the rotation axis of the locking piece 3 is formed in the edge of one side, facing the limiting pin 5, of the locking piece 3.
The upper inner wall of the V-shaped notch 32 is matched with the limiting pin 5, and a first arc-shaped limiting surface 33 matched with the limiting pin 5 is formed between the lower edge of the opening of the V-shaped notch 32 and the outer wall of the side where the V-shaped notch 32 is located.
The locking assembly further comprises a rotary shaft 7 which is transversely and rotatably connected in the locking piece 3 in a penetrating mode, the central axis of the rotary shaft 7 coincides with the rotation axis of the locking piece 3, and one end, facing the hinge chain 2, of the rotary shaft 7 is fixed on the outer wall, close to the locking piece 3, of one side of the hinge chain 2.
The locking assembly further comprises a torsion spring 6 sleeved on the rotating shaft 7 and arranged between the hinge chain 2 and the locking piece 3, and two ends of the torsion spring 6 are respectively fixed on the locking piece 3 and the limiting pin 5 so that the locking piece 3 always has a trend of elastic reset rotation in the clockwise direction.
The locking assembly further comprises a safety switch 8, the safety switch 8 comprises a rotary sleeve 81 which is concentrically and damped and rotatably connected to the rotating shaft 7 and is positioned outside one side of the locking piece 3, which is opposite to the hinge chain 2, a first connecting rod 82 which is fixed on the outer circumferential surface of the front side of the rotary sleeve 81, a sliding block 85 which is movably connected in the hinge strip 2 so as to have a function of moving back and forth along the radial direction of the rotating shaft 7, a second connecting rod 83 which is rotatably connected to the sliding block 85 and is positioned on the same side of the locking piece 3, and a limiting column 86 which is transversely fixed to the sliding block 85 and is positioned behind the second connecting rod 83, and the end part of the second connecting rod 83 is rotatably connected to the end part of the first connecting rod 82.
The front side edge of the middle part of the locking piece 3 is provided with an arc-shaped guide surface 34 which is arranged concentrically with the rotation axis of the locking piece 3 and positioned at the front lower part of the rotation axis of the locking piece 3, the arc-shaped guide surface 34 is also provided with a limit notch 35 which is distributed radially, and the position and the width of the limit notch 35 are matched with the position and the outer diameter of the limit post 86.
The middle part of the hinge chain 2 is provided with a through hole 21, one end of the rotating shaft 7 facing the hinge chain 2 is inserted and fixed in the through hole 21, the inner wall of the front lower side of the through hole 21 is also provided with guide grooves 22 which are distributed radially, and the sliding blocks 85 are movably embedded in the guide grooves 22.
The safety switch 8 further comprises two pressing plates 84 respectively fixed on the outer walls of the left and right sides of the slider 85 and respectively attached to the outer walls of the left and right sides of the hinge strip 2 in a sliding manner, and the second connecting rod 83 is rotatably connected to one pressing plate 84 located on the same side as the locking piece 3.
The locking assembly further comprises a handle 9 fixed to the upper end of the locking tab 3.
The using method comprises the following steps:
the seat cushion is arranged at the top of the seat frame 1, the back cushion above the seat cushion is arranged between the two hinge strips 2, a passenger sits on the seat cushion and can normally use the seat cushion by leaning on the back cushion, at the moment, the back pressure of the passenger is applied to the back cushion backwards, and as each hinge strip 2 at the moment is pressed against one locking shaft 4 at the same side, the thrust received by the back cushion is transmitted to the locking shaft 4 by the hinge strips 2, and then transmitted to the seat frame 1 to realize offset, and the back cushion can effectively support the back of the passenger.
Because both ends of the torsion spring 6 are respectively fixed on the locking piece 3 and the limiting pin 5, the torsion spring 6 always applies a clockwise rotating acting force to the locking piece 3, so that the lower end of the locking piece 3 always generates a forward pressure to one locking shaft 4 on the same side, and the locking groove 31 on the locking piece 3 is always buckled outside the locking shaft 4, at the moment, even if the cushion is subjected to a forward pushing force, the pushing force can generate a forward and upward pulling force to the locking piece 3 by means of the rotating connection relation of the hinge chain 2 and the seat frame 1, but the locking shaft 4 is positioned inside the locking groove 31, so that the locking piece 3 cannot rotate, and therefore, the two hinge chains 2 and the cushion cannot swing, and an effective locking function is realized, and because the opening of the locking groove 31 is transversely forwards or obliquely forwards upwards arranged, no matter how much the unexpected pushing force of the hinge chain 2 is, the lower end of the locking piece 3 cannot be forced to rotate anticlockwise, and further, the locking shaft 4 is effectively prevented from being separated from the locking groove 31, and the locking is reliably unlocked.
When the handle 9 is unlocked, the locking piece 3 can be driven to rotate anticlockwise by holding the handle 9 with hands and pushing forwards, the locking groove 31 on the locking piece 3 swings backwards to separate from the locking shaft 4 until the first arc-shaped limiting surface 33 contacts the limiting pin 5, the locking piece 3 cannot continue to rotate, unlocking is completed, afterwards, the back cushion is pushed forwards to drive the end parts of the two hinge strips 2 to swing forwards until the back cushion contacts the seat cushion, the back cushion is laid down, when the end parts of the two hinge strips 2 swing forwards, the handle 9 can be released by hands, the rebound force of the torsion spring 6 drives the locking piece 3 to rotate clockwise to reset until the upper inner wall of the V-shaped notch 32 contacts the limiting pin 5, the locking piece 3 cannot continue to rotate at the moment, and the handle 9 also tends to be horizontal along with the rotation of the locking piece 3 so as to avoid upward bulge.
However, before the locking piece 3 is rotated, since the limiting post 86 is located in the limiting notch 35, the locking piece 3 cannot rotate, the rotary sleeve 81 in the safety switch 8 needs to be held by hand and rotated anticlockwise, and then the first connecting rod 82 drives the second connecting rod 83 to move downwards and forwards while rotating clockwise, so that the sliding block 85 is driven to move along the guide groove 22 in a direction away from the locking piece 3, and the limiting post 86 is driven to come out of the limiting notch 35, the limiting piece 3 at the moment releases the limitation, then the rotary sleeve 81 can be loosened, and the rotary sleeve 81 automatically stays by means of the damping rotation relation between the rotary sleeve and the rotating shaft 7, and displacement cannot occur.
When the locking piece 3 is in the locking state and the back cushion is in the unfolded use state, in order to effectively prevent the handle 9 from being pushed forward accidentally, the rotary sleeve 81 needs to be held by a hand and rotated clockwise, and then the second connecting rod 83 is driven to move upwards and backwards while rotating anticlockwise according to the same principle, so that the sliding block 85 is driven to move along the guide groove 22 towards the direction close to the locking piece 3 until the limit post 86 completely enters the limit notch 35, and at the moment, if the handle 9 is pushed forward accidentally, the locking piece 3 cannot rotate anticlockwise due to the fact that the limit post 86 limits the handle 9 by virtue of the limit notch 35, and therefore the locking piece 3 is effectively prevented from rotating and unlocking due to accidents, safety is further fully guaranteed, and the operation is simple and convenient.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be replaced equally, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.
Claims (10)
1. The turnover locking mechanism of the automobile seat backrest is characterized by comprising a seat frame and two hinge assemblies symmetrically arranged at the left side and the right side of the seat frame, wherein the hinge assemblies comprise hinge strips rotatably connected to the outer wall at the left side or the right side of the seat frame and locking shafts transversely fixed on the outer wall at the corresponding side of the seat frame and positioned behind the rotation axis of the hinge strips for supporting and positioning the hinge strips;
The locking assembly is arranged between one of the hinge chains and the seat frame;
The locking assembly comprises a locking piece, wherein the middle part of the locking piece is rotatably connected to the outer wall of one of the hinge chains and always has a tendency of elastic reset rotation in the clockwise direction;
When the hinge strip rotates clockwise to the upper part of one locking shaft on the same side and is blocked by the locking shaft so as not to continue rotating, the lower end of the locking piece is arranged at the rear part of the locking shaft and can be detachably fixed on the locking shaft by utilizing the tendency of the clockwise elastic force of the locking piece to reset and rotate;
When the upper end of the locking piece rotates anticlockwise, the lower end of the locking piece can overcome the tendency of clockwise elastic force reset rotation of the lower end of the locking piece and separate from the locking shaft;
the locking assembly further comprises a handle fixed at the upper end of the locking piece.
2. The turnover locking mechanism of claim 1, wherein the lower end of the locking piece is provided with a locking groove towards one side edge of the locking shaft, the inner width of the locking groove is matched with the outer diameter of the locking shaft, and the opening of the locking groove is matched with the position of the locking shaft.
3. The flip lock mechanism of a car seat back according to claim 2, wherein when said hinge strip is rotated clockwise to above one lock shaft on the same side and blocked by the lock shaft from continuing rotation, said lock groove on the lock plate is detachably engaged outside the lock shaft by the tendency of the clockwise elastic force of the lock plate to return rotation, and when said lock groove is engaged outside the lock shaft, the opening of said lock groove is disposed laterally forward or obliquely forward and upward.
4. The turnover locking mechanism of a backrest of an automobile seat according to claim 1, wherein the locking assembly further comprises a limiting pin transversely fixed on the outer wall of one side of the hinge close to the locking piece and positioned above the rear of the rotation axis of the locking piece, correspondingly, a V-shaped notch higher than the rotation axis of the locking piece is formed on one side edge of the locking piece facing the limiting pin, the upper inner wall of the V-shaped notch is matched with the limiting pin, and a first arc-shaped limiting surface matched with the limiting pin is formed between the lower side edge of the opening of the V-shaped notch and the outer wall of one side where the V-shaped notch is located.
5. The roll over lock mechanism of a vehicle seat back according to claim 4, wherein the lock assembly further comprises a rotation shaft which is connected in the lock piece in a transversely and rotatably penetrating manner, a central axis of the rotation shaft coincides with a rotation axis of the lock piece, and one end of the rotation shaft facing the hinge chain is fixed on an outer wall of one side of the hinge chain close to the lock piece.
6. The reclining lock mechanism of a vehicle seat back of claim 5, wherein the lock assembly further comprises a torsion spring sleeved on the rotation shaft and interposed between the hinge and the lock plate, wherein both ends of the torsion spring are respectively fixed to the lock plate and the limit pin, so that the lock plate always has a tendency to return to rotation in a clockwise direction by elastic force.
7. The reclining lock mechanism of a back rest of an automobile seat according to claim 5, wherein the lock assembly further comprises a safety switch including a rotating sleeve concentrically and rotatably coupled to the rotating shaft and positioned at an outer side of a side of the locking piece facing away from the hinge chain in a damped manner, a first link fixed to an outer circumferential surface of a front side of the rotating sleeve, a slider movably coupled to the hinge chain to have a function of moving back and forth in a radial direction of the rotating shaft, a second link rotatably coupled to the slider and positioned at the same side as the locking piece, and a stopper post transversely fixed to the slider and positioned at a rear of the second link, an end of the second link being rotatably coupled to an end of the first link.
8. The turnover locking mechanism of claim 7, wherein the front side edge of the middle part of the locking piece is provided with an arc-shaped guide surface which is concentric with the rotation axis of the locking piece and positioned at the front lower part of the rotation axis of the locking piece, the arc-shaped guide surface is also provided with limit notches which are distributed in radial direction, and the positions and the widths of the limit notches are matched with the positions and the outer diameters of the limit posts.
9. The turnover locking mechanism of claim 7, wherein a through hole is formed in the middle of the hinge chain, one end of the rotating shaft, which faces the hinge chain, is inserted and fixed in the through hole, radially-distributed guide grooves are formed in the inner wall of the front lower side of the through hole, and the sliding block is movably embedded in the guide grooves.
10. The reclining lock mechanism of a vehicle seat back of claim 7, wherein said safety switch further comprises two pressure plates respectively fixed to the outer walls of the left and right sides of the slider and respectively slidably attached to the outer walls of the left and right sides of the hinge strip, and said second link is rotatably connected to one of the pressure plates on the same side of the locking piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411908303.3A CN119348519B (en) | 2024-12-24 | 2024-12-24 | Turnover locking mechanism of automobile seat backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411908303.3A CN119348519B (en) | 2024-12-24 | 2024-12-24 | Turnover locking mechanism of automobile seat backrest |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119348519A true CN119348519A (en) | 2025-01-24 |
| CN119348519B CN119348519B (en) | 2025-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411908303.3A Active CN119348519B (en) | 2024-12-24 | 2024-12-24 | Turnover locking mechanism of automobile seat backrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119348519B (en) |
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| CN204432438U (en) * | 2015-02-05 | 2015-07-01 | 山东交通学院 | A kind of automobile chair backrest lock locking apparatus |
| CN209700454U (en) * | 2019-04-09 | 2019-11-29 | 西安伊思灵华泰汽车座椅有限公司 | A kind of automotive seat with backrest quick release mechanism |
| CN211731125U (en) * | 2020-01-02 | 2020-10-23 | 佛吉亚（中国）投资有限公司 | Locking mechanism for seat backrest and automobile seat comprising same |
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2024
- 2024-12-24 CN CN202411908303.3A patent/CN119348519B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5269589A (en) * | 1991-01-25 | 1993-12-14 | Bertrand Faure Ltd. | Snap lock fitting for automotive seat backs |
| US6352310B1 (en) * | 1999-03-08 | 2002-03-05 | Daimlerchrysler Ag | Vehicle seat |
| DE10211400A1 (en) * | 2002-03-15 | 2003-10-02 | Opel Adam Ag | Locking device for a hinged back support for a motor vehicle seat has blocking device to prevent movement during travel |
| CN2730675Y (en) * | 2004-10-14 | 2005-10-05 | 胡瑛 | Folding lock component for seat of car |
| CN102275529A (en) * | 2011-07-01 | 2011-12-14 | 重庆延锋江森座椅有限公司 | Automobile backrest folding mechanism |
| CN103625311A (en) * | 2013-12-05 | 2014-03-12 | 上海延锋江森座椅有限公司 | Seat backrest hook locking structure for vehicle |
| CN204432438U (en) * | 2015-02-05 | 2015-07-01 | 山东交通学院 | A kind of automobile chair backrest lock locking apparatus |
| CN209700454U (en) * | 2019-04-09 | 2019-11-29 | 西安伊思灵华泰汽车座椅有限公司 | A kind of automotive seat with backrest quick release mechanism |
| CN211731125U (en) * | 2020-01-02 | 2020-10-23 | 佛吉亚（中国）投资有限公司 | Locking mechanism for seat backrest and automobile seat comprising same |
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| CN119348519B (en) | 2025-10-31 |
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