A reliable and stable core component of an automotive seat

Abstract

The present invention relates to the technical field of angle adjusters, and particularly to a reliable and stable core component of an automobile seat, which includes a disc, a circular gear disc, a bushing, and a dial block that rotates synchronously with the bushing. A small gear member is engaged with the dial block. The small gear member includes a small gear and a cut block that engages with the small gear. The circular gear disc is provided with a chute, and the small gear member slides in the chute of the circular gear disc. A strengthening member is arranged on one side of the small gear member. A hook for unlocking is arranged on the dial block, and a hook groove matching the hook is arranged on the small gear member. The circular gear disc has internal teeth for meshing with the small gear. A matching structure for pressing the small gear member towards the circular gear disc in the locked state of the core component is also arranged on the dial block. The core component further includes an elastic reset mechanism for resetting the central shaft. The core component of the present invention has flexible adjustment, low weight, small shaking clearance, and low cost. It is mainly applied to small and lightweight automobiles, which are lightweight and have high strength without tooth slipping.

Description

Technical Field

[0001] The invention relates to the technical field of angle adjusters, and in particular to a reliable and stable core component of a car seat. Background Art

[0002] At present, there are many types of automotive seat core parts at home and abroad. The automotive seat core parts are mainly composed of discs, round tooth discs, pinions, cut blocks, dials, torsion springs, dial blocks, sleeves, shells and other components. Various core parts have their advantages and disadvantages. Some lock teeth are reliable but costly, while others have low manufacturing costs but poor lock tooth reliability and are prone to slippage. Most core parts have problems such as poor adjustment flexibility, poor synchronization, and slipping teeth. Summary of the invention

[0003] In order to solve the problem of poor reliability of existing core components in the prior art, the present invention provides a reliable and stable core component for a car seat.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] A reliable and stable core component of a car seat comprises a circular disc, a spherical toothed disc, a shaft sleeve and a shifting block which rotates synchronously with the shaft sleeve, the shifting block is matched with a pinion gear component, the pinion gear component comprises a pinion gear and a cut-off block which engages with the pinion gear, the spherical toothed disc is provided with a slide groove, the pinion gear component slides in the slide groove of the spherical toothed disc, a reinforcing component is arranged on one side of the pinion gear component, the shifting block is provided with a shifting hook for unlocking, the pinion gear component is provided with a hook groove which matches the shifting hook, the spherical toothed disc has internal teeth which mesh with the pinion gear, the shifting block is also provided with a matching structure which presses the pinion gear component toward the spherical toothed disc when the core component is locked, and the core component also comprises an elastic resetting mechanism which resets the central axis.

[0006] Furthermore, the reinforcing member includes a dial, the pinion and the cut block are provided with protrusions, and the dial is provided with through holes for accommodating the protrusions.

[0007] Furthermore, the size of the through hole is larger than the size of the bump, or the side wall of the bump is in point contact or surface contact with the through hole.

[0008] Furthermore, the through hole is a strip-shaped through hole, and the width of the strip-shaped through hole matches the size of the bump.

[0009] Furthermore, the contour of the engagement point between the pinion and the cut piece is in a broken line shape, so that the pinion and the cut piece are matched and limited in all directions without gap and shaking.

[0010] Further, the cooperating structure includes at least a first convex block and a second convex block provided on the shifting block, and correspondingly, a first convex platform cooperating with the first convex block and a second convex platform cooperating with the second convex block are provided on the pinion member. In the prior art, there is only one contact point between the cam and the pinion, which is prone to the phenomenon of gear slipping. However, in the present invention, two contact points (the first convex block and the second convex block) are provided on each side for pressing, which is more firm and will not cause the phenomenon of gear slipping.

[0011] Further, the number of the hook, the first convex block and the second convex block is two, and they are symmetrically arranged along the center of the shifting block. In this way, the hook, the first convex block and the second convex block are provided at both ends of the shifting block, and the corresponding pinion member is also provided on both sides, which can realize the overall stability of the member and ensure the normal operation of the core member.

[0012] Further, the elastic reset mechanism includes a torsion spring. A clamping groove is provided on the disc, and the open end of the torsion spring is clamped in the clamping groove. The sleeve has a first square groove, and the inner end of the torsion spring is bent into a square shape that cooperates with the first square groove. The sleeve has a second square groove, and the shifting block has a square hole that cooperates with the second square groove. The torsion spring and the shifting block are both provided on the sleeve, and the open end of the torsion spring is arranged in the clamping groove of the disc. In this way, there is no need to add additional space or structure to arrange the torsion spring, which can reduce costs and save space, and is convenient for the lightweight design of the entire core member.

[0013] Further, the core member further includes a housing provided outside the disc and the circular gear disc.

[0014] Advantageous effects:

[0015] (1) The present invention provides a high-strength and lightweight core member for an automotive seat; the structure of the core member is ingenious, and the manufacturing process is simple. The overall strength is enhanced by setting the dial, and the product quality is reliable and stable;

[0016] (2) On the premise of ensuring the strength, the size of the overall core member can be reduced. Since the plastic parts on the seat match the size of the core member, correspondingly, after the size of the core member is reduced, the size of the plastic parts such as the plastic guard plate on the seat can also be designed smaller, with low production cost, light weight, and small space occupied by the cooperation of the upper and lower plates of the seat. Therefore, it is beneficial to the lightweight of the seat as a whole and can be applied to small and lightweight automobiles;

[0017] (3) By providing through holes on the dial, the through holes limit the convex points on the pinion and the cutting block, or the convex points on the pinion and the cutting block match the size of the through holes, and the pinion and the cutting block slide along the through holes, and the contour of the engagement part between the pinion and the cutting block is in a broken line shape. In this way, the pinion and the cutting block are cooperatively limited in all directions, so that the core member of the invention has a small shaking gap and high strength;

[0018] (4) The torsion spring and the shifting block are both arranged on the bushing, and the open end of the torsion spring is arranged in the clamping groove of the disc. In this way, there is no need to add extra space or structure to arrange the torsion spring, which can reduce costs and save space, facilitating the lightweight design of the entire core component.

[0019] (5) On each side of the pinion of the present invention, two contact points (the first convex block and the second convex block) are provided for pressing, which is more firm and does not slip teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0021] Figure 1 is an exploded view of the angle adjuster of the present invention;

[0022] Figure 2 is a split view of the angle adjuster of the present invention;

[0023] Figure 3 is a structural diagram of the pinion;

[0024] Figure 4 is a structural diagram of the cut block;

[0025] Figure 5 is a structural diagram of the shifting block;

[0026] Figure 6 is a structural diagram of the torsion spring;

[0027] Figure 7 is a structural diagram of the bushing;

[0028] Figure 8 is a structural diagram of the disc (indicating the position of the sliding groove, and the sliding groove is on the other side of the illustration).

[0029] Among them, 1. Disc, 11. Sliding groove, 12. Clamping groove, 2. Circular gear disc, 3. Pinion, 31. Hook groove, 4. Cut block, 41. First boss, 42. Second boss, 5. Shifting block, 51. Shifting hook, 52. First convex block, 53. Second convex block, 6. Torsion spring, 7. Housing, 8. Bushing, 81. First rectangular groove, 82. Second rectangular groove, 9. Shifting disc, 91. Strip-shaped through hole, 10. Convex point. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually illustrative only and in no way restricts the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] In the description of the present invention, it should be understood that the orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. usually indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Without contrary explanation, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the scope of protection of the present invention; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0034] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0035] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.

[0036] Such as Figures 1 to 8 , a reliable and stable core component of an automotive seat, comprising a disc 1, a circular gear disc 2, a bushing 8, and a block 5 that rotates synchronously with the bushing 8. A small gear member is engaged with the block 5. The small gear member includes a small gear 3 and a cut block 4 that engages with the small gear 3. The circular gear disc 2 is provided with a chute 11. The small gear member slides in the chute 11 of the circular gear disc 2. A strengthening member is arranged on one side of the small gear member. The block 5 is provided with a hook 51 for unlocking. The small gear 3 member is provided with a hook groove 31 that matches the hook 51. The circular gear disc 2 has internal teeth for meshing with the small gear 3. The block 5 is further provided with a matching structure for pressing the small gear 3 member towards the circular gear disc 2 when the core component is in a locked state. The core component further includes an elastic reset mechanism for resetting the central shaft.

[0037] The strengthening member includes a dial 9. Both the small gear 3 and the cut block 4 are provided with bumps 10. The dial 9 is provided with through holes for accommodating the bumps 10. The size of the through holes is larger than the size of the bumps 10, or there is a point contact or surface contact between the side walls of the bumps 10 and the through holes.

[0038] The through holes can be merely used to accommodate the bumps 10 and play a certain limiting role for the bumps 10. Or, the through holes can be strip-shaped through holes 91, and the width of the strip-shaped through holes 91 matches the size of the bumps 10. The bumps 10 on the small gear 3 and the cut block 4 match the size of the strip-shaped through holes 91, and the small gear and the cut block slide along the through holes, so that the core component of the invention has a small shaking gap and high strength.

[0039] The contour of the engagement between the pinion gear 3 and the cutting block 4 is zigzag. In this way, the pinion gear 3 and the cutting block 4 are limited in cooperation in all directions, and there will be no gaps or wobbling.

[0040] The mating structure includes at least a first convex block 52 and a second convex block 53 provided on the shifting block 5. Corresponding first convex platforms 41 for mating with the first convex block 52 and second convex platforms 42 for mating with the second convex block 53 are provided on the pinion gear member. The number of the hook 51, the first convex block 52 and the second convex block 53 is two each, and they are all symmetrically arranged along the center of the shifting block 5. The first convex platform 41 and the second convex platform 42 are provided on the cutting block 4. In fact, grooves are cut beside the first convex platform 41 and the second convex platform 42 on the cutting block 4, so that the first convex platform 41 and the second convex platform 42 are formed. When the central axis is reset, it drives the shifting block 5 to return. At this time, the core component is in a locked state. At this time, the first convex block 52 contacts the first convex platform 41, and the second convex block 53 contacts the second convex platform 42. The number of contact points increases, ensuring the locking position and preventing tooth slipping.

[0041] The elastic reset mechanism includes a torsion spring 6. A clamping groove 12 is provided on the disc 1. The open end of the torsion spring 6 is clamped in the clamping groove 12. The sleeve 8 has a first square groove 81, and the inner end of the torsion spring 6 is bent into a square shape that mates with the first square groove 81. The sleeve 8 has a second square groove 82, and the shifting block 5 has a square hole that mates with the second square groove 82. The core component further includes a housing 7 provided outside the disc 1 and the circular gear disc 2.

[0042] Working principle: A square hole is provided at the center of the sleeve 8, and one end of the central axis of the angle adjuster is set to be square, so that it mates with the sleeve 8 and rotates synchronously. The central axis of the angle adjuster drives the sleeve 8 to rotate, and then drives the shifting block 5 to rotate. During the rotation of the hook 51, it hooks the pinion gear 3, so that the pinion gear 3 and the cutting block 4 slide along the sliding groove 11 of the disc 1, and the pinion gear 3 is no longer engaged with the circular gear disc 2, so that the separation of the pinion gear 3 and the circular gear disc 2 can be realized. When the central axis is released, the sleeve 8 is reset under the action of the torsion spring 6. In this way, until the first convex block 52 of the shifting block 5 abuts against the first convex platform 41 of the cutting block 4, and the second convex block 53 of the shifting block 5 abuts against the second convex platform 42 of the cutting block 4. At this time, the pinion gear 3 meshes with the circular gear disc 2 again.

[0043] Specifically in the angle adjuster structure of the seat, one of the disc 1 and the circular gear disc 2 of the core component is fixed to the backrest bracket of the seat, and the other is fixed to the bottom bracket of the seat. Usually, the disc 1 is fixed to the bottom bracket of the seat, and the circular gear disc 2 is fixed to the backrest bracket (of course, this form is not limited). By operating the handle, the pinion gear 3 is disengaged from the circular gear disc 2. Under the action of the return spring of the seat, the backrest automatically rotates forward or rotates backward under the external force of the occupant, and is adjusted to the required backrest angle. Then the handle is released, and under the action of the return spring of the handle, the pinion gear 3 meshes with the circular gear disc 2 to lock the backrest.

[0044] Installation process: Slip the bushing 8 onto the shift block 5, then slip the torsion spring 6 onto the bushing 8 to form a cam assembly (the front and back sides of the shift block 5 correspond to the front and back sides of the torsion spring, and the unlocking directions are opposite). Apply an appropriate amount of grease to the disc 1. Place the cam assembly into the chute 11 of the disc 1. Place the open end of the torsion spring 6 into the card slot 12 of the disc 1. Adjust the angle to the maximum position and place the corresponding pinion 3 and cutter block 4. The pinion 3 and the cutter block 4 are symmetric left and right. The pinion 3 engages with the cutter block 4. Then, slip the dial 9 onto the convex points 10 corresponding to the pinion and the cutter block. The convex points 10 correspond to the strip-shaped through holes 91 of the dial 9. Apply grease again and place it into the circular gear disc 2. After unlocking, slip the housing 7 onto the circular gear disc 2. Finally, place the assembly into the laser welder to weld the gap between the housing 7 and the disc 1. The above completes the assembly of the core component assembly. Laser mark the left and right sides on the disc according to the unlocking direction.

[0045] The core component of the present invention is divided into a left core component and a right core component. The left core component is unlocked in the clockwise direction, and the right core component is unlocked in the counterclockwise direction. The unlocking is driven by riveting the central shaft into the bushing, which drives the rotation of the cam assembly composed of the shift block and the torsion spring, causing the pinion and the cutter block to displace in the disc groove, thereby locking or unlocking the core component.

[0046] It should be understood that the specific embodiments described above are only used to explain the present invention and are not used to limit the present invention. Obvious changes or variations derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A reliable and stable core component for an automotive seat, characterized in that : It includes a disc (1), a circular gear disc (2), a bushing (8), and a block (5) that rotates synchronously with the bushing (8). A small gear member is fitted on the block (5). The small gear member includes a small gear (3) and a cut block (4) that engages with the small gear (3). The circular gear disc (2) is provided with a chute (11). The small gear member slides in the chute (11) of the circular gear disc (2). A strengthening member is provided on one side of the small gear member. A hook (51) for unlocking is provided on the block (5). A hook groove (31) matching the hook (51) is provided on the small gear (3) member. The circular gear disc (2) has internal teeth for meshing with the small gear (3). A matching structure for pressing the small gear (3) member towards the circular gear disc (2) in the locked state of the core component is also provided on the block (5). The core component further includes an elastic reset mechanism for resetting the central shaft; The strengthening member includes a dial (9). Both the small gear (3) and the cut block (4) have bumps (10). The dial (9) has through holes for accommodating the bumps (10); The size of the through holes is larger than the size of the bumps (10), or the side wall of the bumps (10) is in point contact or surface contact with the through holes; The through holes are strip-shaped through holes (91), and the width of the strip-shaped through holes (91) matches the size of the bumps (10); The contour of the engagement part between the small gear (3) and the cut block (4) is zigzag; The matching structure includes at least a first convex block (52) and a second convex block (53) provided on the block (5). Corresponding first convex platforms (41) for cooperating with the first convex block (52) and second convex platforms (42) for cooperating with the second convex block (53) are provided on the small gear member; The number of the hooks (51), the first convex blocks (52), and the second convex blocks (53) is two each, and they are all symmetrically arranged along the center of the block (5).

2. A reliable and stable core component for an automotive seat according to claim 1, characterized in that: The elastic reset mechanism includes a torsion spring (6). A card slot (12) is provided on the disc (1). The open end of the torsion spring (6) is stuck in the card slot (12). A first square groove (81) is provided on the bushing (8). The inner end of the torsion spring (6) is bent into a square shape that matches the first square groove (81).

3. A reliable and stable core component for an automotive seat according to claim 1, characterized in that: A second square groove (82) is provided on the bushing (8). The block (5) has a square hole that matches the second square groove (82).

4. A reliable and stable core component for an automotive seat according to claim 1, characterized in that: The core component further includes a housing (7) provided outside the disc (1) and the circular gear disc (2).

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