Manual adjusting mechanism for automobile seat backrest

Abstract

The invention relates to the technical field of automobile seat adjustment, and discloses an automobile seat backrest manual adjusting mechanism which comprises a mounting assembly and an adjusting assembly, the adjusting assembly is arranged in the mounting assembly, the mounting assembly comprises a main groove plate, a ratchet wheel, a welding plate and a closed ring, and the main groove plate is used for being connected with parts, related to the seat adjusting mechanism, on an automobile; the ratchet wheel is attached to the main groove plate. The adjusting structure has the following advantages and effects that the overall structure of the adjusting structure is compact and stable, when the adjusting shaft rotates, the multiple adjusting blocks can be synchronously driven to be fixed to or separated from the ratchet wheel in a matched mode, the angle range selection is large when the seat rotates and is adjusted, and a more adaptive and comfortable adjusting angle can be provided for a user; meanwhile, the layout and the fastening mode of the adjusting blocks are optimized, the adjusting blocks at multiple positions can be synchronously and movably matched, the precision during rotation adjustment of the seat is guaranteed, the stability during fixing and locking of the mechanism can be improved, the abrasion resistance is improved, and the situation that the seat is loosened and shaken is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seat adjustment, and in particular to a manual adjustment mechanism for an automobile seat backrest. Background Art

[0002] Car seat adjustment mechanisms play a vital role in modern car design. Through the car seat adjustment mechanism, passengers and drivers can adjust the seat height, fore and aft position, tilt angle, etc. according to their height, body shape and personal preferences to achieve the most comfortable riding posture, which not only improves comfort, but also helps to improve passenger satisfaction and driving safety.

[0003] At present, during the use of some existing manual seat adjustment mechanisms, the locking structure thereon usually has certain limitations, which limits the adjustment angle range of the seat. At the same time, the stability performance of the adjustment structure needs to be further improved to improve wear resistance and reduce looseness and shaking. Summary of the invention

[0004] The purpose of the present invention is to provide a manual adjustment mechanism for a car seat backrest, which has the effects of flexible adjustment range and stable structure.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A manual adjustment mechanism for a car seat backrest, comprising a mounting assembly and an adjustment assembly;

[0006] The adjustment assembly is arranged inside the mounting assembly, and the mounting assembly includes a main slot plate, a ratchet, a welding plate and a closed ring. The main slot plate is used to connect with the components related to the seat adjustment mechanism on the car, the ratchet and the main slot plate are fitted to each other, the welding plate is fixed to the outside of the ratchet, and the closed ring is installed in the space formed by the connection between the ratchet and the welding plate;

[0007] The adjustment assembly includes an adjustment block, an adjustment wheel, an adjustment shaft and a return piece. The adjustment block and the adjustment wheel are connected to each other, and the outer side of the adjustment block is meshed with the ratchet. The adjustment shaft and the adjustment wheel are coaxially arranged. When the adjustment shaft rotates, the adjustment wheel will drive the adjustment block to separate from the ratchet, and the adjustment shaft will rotate back through the return piece.

[0008] The present invention is further configured as follows: the main slot plate includes a plate body whose surface is rotatably fitted with the ratchet and a mounting block fixed on the plate body, the mounting blocks are arranged at two or more locations on the plate body, and adjustment spaces for installing adjustment blocks are formed between adjacent mounting blocks, and the adjustment blocks can move closer to or away from the center of the plate body along the adjustment space.

[0009] The present invention is further configured as follows: the mounting block comprises a protrusion fixedly arranged on a side of the plate body close to the ratchet and a mounting surface arranged on the outer side of the protrusion, and the protrusion is connected to the adjustment block via the mounting surface.

[0010] By adopting the above technical solution, the adjustment block can move along the installation surface.

[0011] The present invention is further configured as follows: the adjustment block includes a slider whose outer side is in sliding contact with the plate body, a matching groove arranged at one end of the slider close to the adjustment wheel, and a fitting surface arranged on the outer side of the slider. The slider is slidingly matched with the mounting surface through the fitting surface, and a locking tooth for engaging with the ratchet is fixed on the outer side of the slider.

[0012] By adopting the above technical solution, when the seat is fixed, the slider is meshed with the tooth block on the periphery of the inner wall of the ratchet through the latching teeth.

[0013] The present invention is further configured as follows: the mounting surface includes a first sliding surface and a first blocking surface which are integrally connected to the outside of the protrusion, and the fitting surface includes a second sliding surface and a second blocking surface which are integrally connected to the outside of the slider, the second sliding surface is in sliding contact with the first sliding surface, and the second sliding surface is abutted against and fitted to the first blocking surface via the second blocking surface.

[0014] By adopting the above technical solution, the latching teeth are driven to separate from the ratchet tooth block, and at the same time, the position of the second resistance surface is limited by the first resistance surface.

[0015] The present invention is further configured as follows: the regulating wheel comprises a wheel body rotatably mounted on the plate body and a matching block fixed on the wheel body, and the wheel body is slidably matched with the matching groove through the matching block.

[0016] By adopting the above technical solution, when the wheel body rotates, the matching block can be driven to rotate, so that the matching block applies force to the matching groove.

[0017] The present invention is further configured as follows: the matching groove comprises a groove body opened on the slider, a side of the groove body close to the matching block is an open structure, and a side of the groove body close to and away from the wheel body is respectively provided with a first slope and a second slope.

[0018] By adopting the above technical solution, the setting of the opening can facilitate the fitting block to move into the opening to fit and apply force to the slot body.

[0019] The present invention is further configured as follows: the wheel body comprises a cam rotatably arranged in the plate body and a socket coaxially opened on the cam, and the cam is connected to the adjustment shaft via the socket.

[0020] By adopting the above technical solution, when the adjusting shaft rotates, the cam can be driven to rotate on the plate body.

[0021] The present invention is further configured as follows: the matching block includes a supporting edge integrally fixed to the outer side of the cam and a synchronization block fixed on the supporting edge, the outer side of the synchronization block is in sliding contact with the groove body, and the outer surface of the synchronization block is provided with an arc surface and a convex surface.

[0022] By adopting the above technical solution, when the wheel body rotates, it will drive the synchronous block to rotate synchronously.

[0023] The present invention is further configured as follows: the adjusting shaft includes a hollow shaft plugged into the inner wall of the socket, a synchronization hole opened in the hollow shaft, a convex ring and a limit plate integrally fixed to the outside of the hollow shaft, the return member is a coil spring, the hollow shaft, the synchronization hole and the socket are all square in shape, a protruding clamping column is fixed to the outside of the plate body, and the inner and outer ends of the return member are respectively plugged into the convex ring and the clamping column.

[0024] By adopting the above technical solution, when the seat needs to be adjusted, the synchronous hole is rotated by adjusting the rod to make the hollow shaft rotate.

[0025] The beneficial effects of the present invention are:

[0026] The overall structure of the adjustment structure is compact and stable. When the adjustment shaft rotates, it can synchronously drive multiple adjustment blocks to cooperate with the ratchet to be fixed or separated. The angle range for seat rotation adjustment is wide, which can provide users with a more suitable and comfortable adjustment angle. At the same time, the layout and fastening method of the adjustment blocks are optimized. Multiple adjustment blocks can cooperate synchronously, and the accuracy of seat rotation adjustment is guaranteed. It can also improve the stability of the mechanism when it is fixed and locked, so as to improve wear resistance and reduce seat loosening and shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of an exploded structure of a manual adjustment mechanism for a car seat backrest provided by an embodiment of the present invention;

[0029] Figure 2 is a schematic cross-sectional structure diagram of a manual adjustment mechanism in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the main slot plate structure in an embodiment of the present invention;

[0031] Figure 4 It is a structural schematic diagram of a mounting block in an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the structure of the adjustment block in an embodiment of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the matching groove in an embodiment of the present invention;

[0034] Figure 7 It is a structural schematic diagram of an adjusting wheel in an embodiment of the present invention;

[0035] Figure 8 A schematic diagram of the structure of a synchronization block in an embodiment of the present invention;

[0036] Fig. 9 Schematic diagram of the structure of the adjusting shaft in an embodiment of the present invention.

[0037] In the figure, 1, main groove plate; 2, ratchet; 3, welding plate; 4, closing ring; 5, adjusting block; 6, adjusting wheel; 7, adjusting shaft; 8, return member; 11, plate body; 12, mounting block; 13, clamping column; 14, mounting hole; 15, groove; 121, convex block; 122, mounting surface; 123, first sliding surface; 124, first resistance surface; 51, slider; 52, matching groove; 53, fitting surface; 54, clamping tooth; 521, groove body; 522, first slope; 523, second slope; 531, second sliding surface; 532, second resistance surface; 61, wheel body; 62, matching block; 611, cam; 612, jack; 621, support edge; 622, synchronization block; 623, arc surface; 624, convex surface; 71, hollow shaft; 72, synchronization hole; 73, convex ring; 74, limit plate. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The embodiment of the present invention specifically provides a manual adjustment mechanism for a car seat backrest, please refer to Figure 1 and Figure 2 , including installation components and adjustment components.

[0040] The adjusting component is arranged inside the mounting component. By manually operating the adjusting component, the adjusting component can adjust the mounting state of the mounting component, thereby realizing the fixing and rotation of the seat. When implemented, the mounting component includes a main slot plate 1, a ratchet 2, a welding plate 3 and a closed ring 4. The main slot plate 1 is used to be connected with the components related to the seat adjustment mechanism on the car, so that the main slot plate 1 can be kept fixed after installation. The ratchet 2 and the main slot plate 1 are fitted with each other. The welding plate 3 is fixed on the outside of the ratchet 2. The ratchet 2 and the welding plate 3 are used to be connected with the rotatable components on the car seat structure, so that the ratchet 2 and the welding plate 3 can rotate on the side of the main slot plate 1.

[0041] The closed ring 4 is installed in the space formed by the connection between the ratchet 2 and the welding plate 3, so as to fill the installation gap between the ratchet 2 and the welding plate 3 through the closed ring 4, so as to improve the stability of the ratchet 2 in use and provide closed protection for it, thereby increasing its service life.

[0042] Among them, the adjustment component includes an adjustment block 5, an adjustment wheel 6, an adjustment shaft 7 and a return piece 8. The adjustment block 5 and the adjustment wheel 6 are connected to each other, and the outer side of the adjustment block 5 is meshed with the ratchet 2. The adjustment shaft 7 and the adjustment wheel 6 are coaxially arranged. When the adjustment shaft 7 rotates, the adjustment wheel 6 will drive the adjustment block 5 to separate from the ratchet 2, and the adjustment shaft 7 will rotate back through the return piece 8. Therefore, when the car seat needs to be fixed and rotated, the locking cooperation between the adjustment block 5 and the ratchet 2 can realize the fixed state switching requirement when the seat rotates.

[0043] For further information, please refer to Figure 3 The main slot plate 1 includes a plate body 11 whose surface is rotatably fitted with the ratchet 2 and a mounting block 12 fixed on the plate body 11. The mounting block 12 is arranged at two or more locations on the plate body 11. An adjustment space for installing the adjustment block 5 is formed between adjacent mounting blocks 12. The adjustment block 5 can move along the adjustment space toward or away from the center of the plate body 11, so that the adjustment block 5 can be locked and connected to or separated from the ratchet 2, so that the ratchet 2 can rotate to meet the needs of seat rotation adjustment.

[0044] For details, please refer to Figure 4 The mounting block 12 includes a protrusion 121 fixed to the side of the plate body 11 close to the ratchet 2 and a mounting surface 122 arranged on the outside of the protrusion 121. The mounting surface 122 is arranged at the adjacent position between each protrusion 121, so that the adjustment space required for the installation of the adjustment block 5 is formed through the adjacent mounting surfaces. The protrusion 121 is connected to the adjustment block 5 through the mounting surface 122, so that the adjustment block 5 can move along the mounting surface 122.

[0045] For further information, please refer to Figure 5 and Figure 6 The adjusting block 5 includes a slider 51 whose outer side is in sliding contact with the plate body 11, a matching groove 52 provided at one end of the slider 51 close to the adjusting wheel 6, and a fitting surface 53 provided at the outer side of the slider 51. The slider 51 is in sliding cooperation with the mounting surface 122 through the fitting surface 53;

[0046] A latch tooth 54 for engaging with the ratchet 2 is fixedly disposed on the outer side of the slider 51. When the seat is fixed, the slider 51 engages with the tooth block on the inner wall periphery of the ratchet 2 through the latch tooth 54. When the seat needs to be rotated and adjusted, the rotational drive of the ratchet 2 can be achieved by separating the slider 51 and the latch tooth 54 from the tooth block on the inner wall of the ratchet 2.

[0047] During implementation, the mounting surface 122 includes a first sliding surface 123 and a first blocking surface 124 which are integrally connected and arranged on the outer side of the protrusion 121, and the fitting surface 53 includes a second sliding surface 531 and a second blocking surface 532 which are integrally connected and arranged on the outer side of the slider 51, the first sliding surface 531 and the second sliding surface 532 are parallel to each other, the first blocking surface 124 and the second blocking surface 532 are parallel to each other, the second sliding surface 531 is in sliding contact with the first sliding surface 123, and the second sliding surface 531 is in contact with the first blocking surface 124 via the second blocking surface 532;

[0048] When the slider 51 moves along the first sliding surface 123 toward the center of the plate body 11, it can drive the locking tooth 54 to separate from the tooth block of the ratchet 2. At the same time, the second blocking surface 532 is limited by the first blocking surface 124, thereby limiting the sliding stroke of the slider 51. The side of the slider 51 away from the plate body 11 is in sliding contact with the ratchet 2, so that the slider 51 can be used for stable sliding between the plate body 1 and the ratchet 2.

[0049] For further information, please refer to Figure 5 and Figure 7 The adjusting wheel 6 includes a wheel body 61 rotatably mounted on the plate body 11 and a matching block 62 fixed on the wheel body 61. The wheel body 61 slidably cooperates with the matching groove 52 through the matching block 62, so that when the wheel body 61 rotates, it can drive the matching block 62 to rotate, so that the matching block 62 applies force to the matching groove 52, driving the slider 51 to move closer to or away from the center of the plate body 11.

[0050] Specifically, the mating groove 52 includes a groove body 521 opened on the slider 51, and the side of the groove body 521 close to the mating block 62 is an open structure, and the sides of the groove body 521 close to and away from the wheel body 61 are respectively provided with a first slope 522 and a second slope 523. The open setting can facilitate the mating block 62 to move into the opening to exert mating force on the groove body 521.

[0051] Please refer to Figure 4 and Figure 7 The wheel body 61 includes a cam 611 rotatably disposed in the plate body 11 and a socket 612 coaxially provided on the cam 611. The cam 611 is connected to the adjustment shaft 7 through the socket 612, so that when the adjustment shaft 7 rotates, the cam 611 can be driven to rotate on the plate body 11;

[0052] The plate body 11 is provided with a mounting hole 14 and a groove 15, and the outer side of the cam 611 is rotatably connected to the mounting hole 14;

[0053] When implementing, please refer to Figure 7 and Figure 8The matching block 62 includes a supporting edge 621 integrally fixed to the outer side of the cam 611 and a synchronous block 622 fixed to the supporting edge 621. The number of the synchronous blocks 622 is consistent with the number of the matching grooves 52. The outer side of the synchronous block 622 is in sliding contact with the groove body 521. The outer surface of the synchronous block 622 is provided with an arc surface 623 and a convex surface 624.

[0054] When the wheel body 61 rotates, it will drive the synchronous block 622 to rotate synchronously, so that the outer end of the synchronous block 622 rotates toward the inner end of the groove body 521, and the synchronous block 622 slides on the first slope 522 and the second slope 523 through the arc surface 623 and the convex surface 624 respectively, so as to help the slider 51 to telescopically slide along the adjustment space, and when the synchronous block 622 resets and rotates, the arc surface 623 and the convex surface 624 push the first slope 522 and the second slope 523 to reset, so that the slider 51 can quickly reset and slide, thereby driving the slider 51 to achieve displacement stably and quickly, so that the ratchet 2 can rotate quickly to meet the needs of seat adjustment.

[0055] For further information, please refer to Figure 4 and Fig. 9 The adjusting shaft 7 includes a hollow shaft 71 plugged into the inner wall of the plug hole 612, a synchronization hole 72 provided in the hollow shaft 71, a convex ring 73 and a limit plate 74 integrally fixed to the outer side of the hollow shaft 71, and the return member 8 is a coil spring. The hollow shaft 71, the synchronization hole 72 and the plug hole 612 are all in a square shape to facilitate the external adjustment rod to apply force to the hollow shaft 71 to rotate. A protruding clamping column 13 is fixed to the outer side of the plate body 11;

[0056] The inner and outer ends of the return member 8 are respectively plugged into the convex ring 73 and the clamping column 13. The limit plate 74 is used to limit the outer side of the return member 8 so that the return member 8 can be stably inserted into the surface of the hollow shaft 71. When the car seat rotation structure is installed, the external adjustment rod is plugged into the synchronization hole 72. When the seat needs to be adjusted, the synchronization hole 72 can be rotated by adjusting the rod to make the hollow shaft 71 rotate, and the cam 611 can be rotated.

[0057] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and wiring layout in detail.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A manual adjustment mechanism for a car seat backrest, characterized in that: Including installation components and adjustment components; The adjustment component is arranged inside the mounting component, and the mounting component comprises a main slot plate (1), a ratchet wheel (2), a welding plate (3) and a closed ring (4); the main slot plate (1) is used to be connected to components on the vehicle and related to the seat adjustment mechanism; the ratchet wheel (2) and the main slot plate (1) are fitted to each other; the welding plate (3) is fixedly arranged on the outside of the ratchet wheel (2); and the closed ring (4) is installed in a space formed by the connection between the ratchet wheel (2) and the welding plate (3); The adjusting assembly comprises an adjusting block (5), an adjusting wheel (6), an adjusting shaft (7) and a return member (8); the adjusting block (5) and the adjusting wheel (6) are connected to each other, and the outer side of the adjusting block (5) is kept in mesh with the ratchet (2); the adjusting shaft (7) and the adjusting wheel (6) are coaxially arranged; when the adjusting shaft (7) rotates, the adjusting wheel (6) drives the adjusting block (5) to separate from the ratchet (2), and the adjusting shaft (7) rotates back to its original position through the return member (8).

2. A manual adjustment mechanism for a car seat backrest according to claim 1, characterized in that: The main slot plate (1) comprises a plate body (11) whose surface is rotatably fitted with the ratchet wheel (2) and a mounting block (12) fixed on the plate body (11); the mounting block (12) is arranged at two or more locations on the plate body (11); an adjustment space for mounting an adjustment block (5) is formed between adjacent mounting blocks (12); and the adjustment block (5) can move closer to or farther from the center of the plate body (11) along the adjustment space.

3. A manual adjustment mechanism for a car seat backrest according to claim 2, characterized in that: The mounting block (12) comprises a protrusion (121) fixedly arranged on a side of the plate body (11) close to the ratchet (2) and a mounting surface (122) arranged on the outside of the protrusion (121); the protrusion (121) is connected to the adjustment block (5) via the mounting surface (122).

4. A manual adjustment mechanism for a car seat backrest according to claim 3, characterized in that: The adjusting block (5) comprises a slider (51) whose outer side is in sliding contact with the plate body (11), a matching groove (52) arranged at one end of the slider (51) close to the adjusting wheel (6), and a fitting surface (53) arranged at the outer side of the slider (51); the slider (51) is in sliding cooperation with the mounting surface (122) via the fitting surface (53); and a latching tooth (54) for meshing with the ratchet (2) is fixedly arranged on the outer side of the slider (51).

5. The manual adjustment mechanism for a car seat backrest according to claim 4, characterized in that: The mounting surface (122) comprises a first sliding surface (123) and a first blocking surface (124) which are integrally connected and arranged on the outside of the protrusion (121); the fitting surface (53) comprises a second sliding surface (531) and a second blocking surface (532) which are integrally connected and arranged on the outside of the slider (51); the second sliding surface (531) is in sliding contact with the first sliding surface (123), and the second sliding surface (531) is in contact with the first blocking surface (124) via the second blocking surface (532).

6. A manual adjustment mechanism for a car seat backrest according to claim 5, characterized in that: The regulating wheel (6) comprises a wheel body (61) rotatably mounted on the plate body (11) and a matching block (62) fixed on the wheel body (61); the wheel body (61) is slidably matched with the matching groove (52) via the matching block (62).

7. A manual adjustment mechanism for a car seat backrest according to claim 6, characterized in that: The matching groove (52) comprises a groove body (521) opened on the slider (51); a side of the groove body (521) close to the matching block (62) is an open structure; and a side of the groove body (521) close to and away from the wheel body (61) is respectively provided with a first slope (522) and a second slope (523).

8. The manual adjustment mechanism for a car seat backrest according to claim 7, characterized in that: The wheel body (61) comprises a cam (611) rotatably arranged in the plate body (11) and a socket (612) coaxially arranged on the cam (611); the cam (611) is connected to the adjustment shaft (7) via the socket (612).

9. The manual adjustment mechanism for a car seat backrest according to claim 8, characterized in that: The matching block (62) comprises a supporting edge (621) integrally fixed to the outside of the cam (611) and a synchronous block (622) fixed to the supporting edge (621); the outer side of the synchronous block (622) is in sliding contact with the groove body (521); and the outer surface of the synchronous block (622) is provided with an arc surface (623) and a convex surface (624).

10. The manual adjustment mechanism for a car seat backrest according to claim 9, characterized in that: The adjusting shaft (7) comprises a hollow shaft (71) plugged into the inner wall of the insertion hole (612), a synchronization hole (72) provided in the hollow shaft (71), a convex ring (73) and a limit plate (74) integrally fixed to the outer side of the hollow shaft (71); the return member (8) is a coil spring; the hollow shaft (71), the synchronization hole (72) and the insertion hole (612) are all square in shape; a protruding clamping column (13) is fixed to the outer side of the plate body (11); the inner and outer ends of the return member (8) are respectively plugged into the convex ring (73) and the clamping column (13).

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