Sliding interlocking reclining device for vehicle seat

Abstract

The present disclosure relates to a slide interlock reclining device for a vehicle seat. A slide interlocking tilt device for a vehicle seat is configured to implement a tilt operation in linkage with a slide operation of the vehicle seat. The mechanism of the slide interlock tilting device is simpler than the structure of a slide interlock tilting device in the related art, thereby reducing cost and weight and preventing the generation of engagement noise between components during the traveling of the vehicle.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Korean Patent Application No. 10-2023-0149620, filed on November 2, 2023, and the entire contents of the Korean Patent Application are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a slide interlocking tilting device for a vehicle seat, and more particularly, to a slide interlocking tilting device for a vehicle seat configured to achieve a tilting operation linked to a sliding operation of the vehicle seat. Background Art

[0004] Generally, a vehicle includes a front seat disposed at a front side of an interior of the vehicle and a rear seat disposed at a rear side of an interior of the vehicle.

[0005] The vehicle seat is composed of a seat cushion that supports the buttocks and thighs of the passenger and a seat back that supports the back of the passenger. The seat cushion can slide forward and the seat back can be tilted backward.

[0006] A conventional seat includes one operating lever for sliding a seat cushion and another operating lever for tilting a seat back, respectively, which may cause inconvenience in operation.

[0007] Therefore, seat slide-interlocking reclining devices have recently been applied to vehicle seats.

[0008] In case of a seat to which a conventional seat slide interlocking reclining device is applied, a latch unit provided on a seat back frame is engaged and coupled with a back striker provided on a vehicle body, and a lower portion of the seat back frame is rotatably coupled to a rear end of a seat cushion frame.

[0009] The latch unit is configured to release the connection with the backrest latch when the seat cushion frame slides forward. Therefore, when the seat cushion frame slides forward, the connection between the latch unit and the backrest latch is released, and the seat cushion frame tilts backward.

[0010] However, due to the characteristics of the coupling structure using latch-type components, the conventional seat slide interlocking reclining device has a complicated operation structure between the latch unit and the backrest latch. Therefore, there are problems of increased cost and weight, and vibration and engagement noise (noise between components) during vehicle driving.

[0011] The above information disclosed in this Background section is only for enhancement of understanding of the technical background of the present disclosure and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art. Summary of the invention

[0012] The present disclosure is directed to solving the above-mentioned problems associated with the prior art, and an object of the present disclosure is to provide a sliding interlocking tilting device for a vehicle seat, wherein the structure of the sliding interlocking tilting device is simpler than that of the related art, thereby not only reducing cost and weight, but also preventing the generation of engagement noise (noise between components) during vehicle driving.

[0013] The objects of the present disclosure are not limited to the above objects, and those skilled in the art to which the present disclosure belongs will clearly understand other technical objects not mentioned herein based on the detailed description of the embodiments.

[0014] In one aspect, the present disclosure provides a sliding interlocking tilting device for a vehicle seat, the sliding interlocking tilting device comprising: a seat cushion frame capable of sliding forward when unlocked; a seat back frame connected to the rear end of the seat cushion frame by a free hinge; a vehicle body connecting bracket fixed to the vehicle body; a main bracket having an upper portion and a lower portion, the upper portion being fixed to the upper end of the seat back frame, and the lower portion having a guide hole formed in the lower portion; and a vehicle body connecting pin constructed to pass through the guide hole and be connected to the vehicle body connecting bracket, wherein the guide hole is elongated and the extending direction of the guide hole is such that when the seat cushion frame slides forward, the seat back frame moves downward without being interfered with by the vehicle body connecting pin.

[0015] In an embodiment, the vehicle body connecting pin may extend through a connecting pin coupling hole of the connector bracket, the connector bracket may be connected to a lower portion of the main bracket via a hinge pin, and the connector bracket may include a rear bracket component and a front bracket component, the rear bracket component being formed with a connecting pin coupling hole, and the front bracket component being formed with a cable connecting hole.

[0016] In another embodiment, the front bracket component can be connected to the folding belt by a drive cable, the drive cable is connected to the cable connection hole, and when the folding belt is manipulated, the connector bracket can be constructed to rotate so that the body connecting pin can be disconnected from the hook portion, which is set on the body connecting bracket.

[0017] In yet another embodiment, a hook portion may be provided at a front end of the vehicle body coupling bracket and may be formed to receive the vehicle body coupling pin.

[0018] In still another embodiment, the vehicle body coupling bracket may have an inclined surface portion formed to contact the vehicle body connecting pin and configured to guide the vehicle body connecting pin to move upward when the seat back frame is deployed.

[0019] In yet another embodiment, an inclined surface portion may be provided at a front end of the hook portion.

[0020] In a further embodiment, a spring member may be provided on the main bracket, the spring member may be compressed by rotation of the connector bracket, and the spring member may have a first end and a second end, the first end being fixed to the vehicle body connecting pin, and the second end being fixed to the spring fixing part of the main bracket.

[0021] In yet another embodiment, the main support may be provided with an elastic guide member, and the elastic guide member is assembled on the guide hole.

[0022] Other aspects and embodiments of the disclosure are discussed below.

[0023] It should be understood that the term "vehicle" or "vehicle-related" and other similar terms used herein include general motor vehicles, such as passenger cars including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft including various boats and ships, aircraft, etc., and also include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g., fuels derived from resources other than petroleum). As described herein, a hybrid vehicle is a vehicle having two or more sources of power, such as a vehicle powered by both gasoline and electricity.

[0024] The above and other features of the present disclosure are discussed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other features of the present disclosure will now be described in detail with reference to certain exemplary embodiments of the present disclosure shown in the accompanying drawings, which are given hereinafter by way of illustration only and thus do not limit the present disclosure, and in which:

[0026] Figure 1 is a diagram showing a slide interlocking reclining device for a vehicle seat according to an embodiment of the present disclosure;

[0027] Figure 2 and Figure 3 are diagrams showing main configurations of a slide interlocking reclining device for a vehicle seat according to an embodiment of the present disclosure;

[0028] Figure 4 is a diagram illustrating a tilting mode of a slide interlocking tilting device for a vehicle seat according to an embodiment of the present disclosure;

[0029] Figure 5 is a diagram illustrating a folding mode of a slide interlocking reclining device for a vehicle seat according to an embodiment of the present disclosure; and

[0030] Figure 6 2 is a diagram illustrating a deployment mode of a slide interlocking reclining device for a vehicle seat according to an embodiment of the present disclosure.

[0031] It should be understood that the accompanying drawings are not necessarily drawn to scale, presenting somewhat simplified representations of various features illustrating the basic principles of the present disclosure. The specific design features of the present disclosure as disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the specific intended application and use environment.

[0032] In the drawings, reference numerals refer to the same or equivalent parts of the present disclosure throughout the several figures of the drawing. DETAILED DESCRIPTION

[0033] Hereinafter, reference will be made in detail to various embodiments of the present disclosure, examples of which are shown in the accompanying drawings and described below. The items included in the drawings are schematically shown to facilitate explanation of the embodiments of the present disclosure and may differ from the actual implementation form.

[0034] like Figure 1 As shown, the sliding interlocking tilting device for a vehicle seat according to an embodiment of the present disclosure includes: a seat cushion frame 10, which can slide along the front and rear directions of the vehicle; a seat back frame 20, which is connected to the rear end of the seat cushion frame 10; a main bracket 30, which is installed at the upper end of the seat back frame 20; and a vehicle body connecting pin 36, which is assembled to the main bracket 30.

[0035] The cushion frame 10 has a sliding rod 12, which is provided at the front end of the cushion frame 10, and the cushion frame 10 is configured to slide forward when the sliding rod 12 is unlocked. That is, the sliding rod 12 locks the sliding of the cushion frame 10, and when the sliding rod 12 is unlocked, the cushion frame 10 slides forward.

[0036] Although not shown in the drawings, the cushion frame 10 may have a sliding unit (not shown) provided at a lower end of the cushion frame 10 and configured to perform forward and backward movement of the cushion frame 10. When the sliding lever 12 is operated to unlock the sliding unit, the cushion frame 10 slides in the forward and backward direction.

[0037] The lower end of the seat back frame 20 is connected to the rear end of the seat cushion frame 10 through the free hinge 14. That is, the seat back frame 20 is connected to the rear end of the seat cushion frame 10 through the free hinge 14 in a freely rotatable manner.

[0038] When the seat cushion frame 10 slides forward, the seat back frame 20 is linked with the forward movement of the seat cushion frame 10 through the free hinge 14 and tilted rearward.

[0039] In order to tilt the seat back frame 20 when the seat cushion frame 10 slides forward, the main bracket 30 includes an upper portion fixed to the upper portion of the seat back frame 20 and a lower portion in which a pair of guide holes 32 are formed and configured to allow the seat back frame 20 to tilt. The guide holes 32 are provided on the left and right sides of the main bracket 30, respectively.

[0040] like Figures 1 to 3 As shown, each of the guide holes 32 is formed at a lower portion of the main bracket 30 and is configured to allow a vehicle body connecting pin 36 to pass therethrough.

[0041] The vehicle body connecting pin 36 passes through each of the guide holes 32 to extend in the left-right direction of the vehicle, and is connected and coupled with a hook portion 42 of a vehicle body connecting bracket 40 fixed to the vehicle body.

[0042] In this manner, the guide hole 32 is connected to the vehicle body connecting pin 36 connected to the vehicle body connecting bracket 40 , thereby restricting the position and posture of the seat back frame 20 .

[0043] Therefore, when the cushion frame 10 slides forward, the guide hole 32 extends in a direction that allows the seat back frame 20 to move forward or downward without being interfered by the vehicle body connecting pin 36 .

[0044] That is, the guide hole 32 is formed to extend in a direction allowing the seat back frame 20 to tilt as the cushion frame 10 slides forward, thereby releasing the seat back frame 20 from the vehicle body connecting pin 36 when the cushion frame 10 slides forward.

[0045] Reference Figure 4 The guide hole 32 is formed to extend in a vertical direction so that when the cushion frame 10 slides forward, the seat back frame 20 may move downward and may tilt rearward.

[0046] In order to smoothly tilt the seat back frame 20, the guide hole 32 may be formed to extend in a curved elongated shape that may be oriented in a diagonal direction. Here, the guide hole 32 may be tilted so that the upper end of the guide hole 32 is located behind the lower end thereof.

[0047] Furthermore, if Figure 4 As shown, when the cushion frame 10 does not slide forward, the vehicle body connecting pin 36 is located at the lower end of the guide hole 32. When the cushion frame 10 slides forward, the seat back frame 20 moves downward, and the vehicle body connecting pin 36 is located at the upper end of the guide hole 32.

[0048] The vehicle body connecting pin 36 is fixed without moving in a state of being coupled with the hook portion 42 of the vehicle body connecting bracket 40. Here, when the seat back frame 20 moves downward, the vehicle body connecting pin 36 moves upward.

[0049] On the other hand, in order to allow the seat back frame 20 to be rotatably folded relative to the seat cushion frame 10, a hook portion 42 is provided at the front end of the vehicle body connection bracket 40, and the hook portion 42 is formed to have an opening in the upper area of ​​the vehicle body connection bracket 40 so as to accommodate the vehicle body connection pin 36. Figure 5 and Figure 6 shown.

[0050] Therefore, when the seat back frame 20 is folded toward the cushion frame 10 , the vehicle body connecting pin 36 may be disengaged from the hook portion 42 , thereby being separated from the vehicle body coupling bracket 40 .

[0051] In addition, the vehicle body connecting pin 36 extends through the connecting pin coupling hole 57 of the connector bracket 50 .

[0052] The connector bracket 50 is rotatably coupled to the lower portion of the main bracket 30 via a hinge pin 52. Figure 3 As shown, the connector bracket 50 includes a rear bracket part 56 and a front bracket part 54, a connection pin coupling hole 57 is formed in the rear bracket part 56, and a cable connection hole 55 is formed in the front bracket part 54. The front bracket part 54 and the rear bracket part 56 can be distinguished from each other by a hinge pin 52. The hinge pin 52 is located in front of the guide hole 32 on the main bracket 30.

[0053] The connector bracket 50 is connected to the vehicle body connecting pin 36 through the connecting pin coupling hole 57, and is linkedly connected to the folding belt 58 through the cable connecting hole 55. The folding belt 58 is operated by a user to perform the folding operation of the seat back frame 20.

[0054] The body connecting pin 36 is located outside the connector bracket 50 and the main bracket 30. When inside the main bracket 30, the body connecting pin 36 passes through the guide hole 32 of the main bracket 30, the hook portion 42 of the body connecting bracket 40, and the connecting pin connecting hole 57 of the connector bracket 50.

[0055] The front bracket part 54 of the connector bracket 50 is connected to the folding belt 58 through the driving cable 59, and the driving cable 59 is connected to the cable connection hole 55. Figure 5 As shown, when the folding belt 58 is operated, the driving cable 59 is pulled, and the connector bracket 50 rotates counterclockwise around the hinge pin 52. In this case, the vehicle body connecting pin 36 moves upward and disengages from the hook portion 42 of the vehicle body coupling bracket 40. The vehicle body connecting pin 36 can be pivotally moved along the guide hole 32 of the main bracket 30, and the folding belt 58 can be manually operated by the user.

[0056] Therefore, the coupling between the vehicle body connecting pin 36 and the vehicle body connecting bracket 40 is released. Therefore, the locking of the seat back frame 20 is released, and the seat back frame 20 becomes rotatable and foldable.

[0057] In other words, the vehicle body connecting pin 36 is disengaged from the hook portion 42 and disconnected from the vehicle body connecting bracket 40 , thereby allowing the folding operation of the seat back frame 20 . The seat back frame 20 may be folded from an upright state to a lying state to face the cushion frame 10 .

[0058] Before the seat back frame 20 is folded, the vehicle body connecting pin 36 is in a state of being detachably inserted into the hook portion 42 and detachably coupled to the vehicle body connecting bracket 40. The hook portion 42 is formed to allow the vehicle body connecting pin 36 to move upward when the connector bracket 50 is rotated by the folding belt 58. The hook portion 42 may allow the vehicle body connecting pin 36 to move only by the rotation of the connector bracket 50, and may block and restrict any other movement.

[0059] In addition, the vehicle body coupling bracket 40 has an inclined surface portion 44 which is formed in front of the hook portion 42 and is provided to perform reconnection with the vehicle body connecting pin 36 when the seat back frame 20 is unfolded.

[0060] When the seat back frame 20 is unfolded, the inclined surface portion 44 is a portion that contacts the vehicle body connecting pin 36 moving toward the vehicle body connecting bracket 40. Further, the inclined surface portion 44 is provided at the front end of the vehicle body connecting bracket 40 and is formed to have a predetermined inclined surface portion so as to guide the vehicle body connecting pin 36 to move upward.

[0061] Reference Figure 6 When the seat back frame 20 is unfolded and erected from the cushion frame 10 , the vehicle body connecting pin 36 assembled to the guide hole 32 of the main bracket 30 and the connecting pin coupling hole 57 of the connector bracket 50 rotates around the free hinge 14 together with the seat back frame 20 and contacts the inclined surface portion 44 .

[0062] After contacting the inclined surface portion 44, the vehicle body connecting pin 36 further rotates until passing through the upper end of the inclined surface portion 44. In this case, the connector bracket 50 rotates in the direction to compress the spring member 38. When the vehicle body connecting pin 36 further rotates after contacting the inclined surface portion 44, the connector bracket 50 rotates around the hinge pin 52 together with the vehicle body connecting pin 36. When the vehicle body connecting pin 36 contacts the inclined surface portion 44 and further rotates, the vehicle body connecting pin 36 rotates around the free hinge 14 together with the seat back frame 20, and simultaneously rotates around the hinge pin 52 together with the connector bracket 50.

[0063] After passing through the upper end of the inclined surface portion 44, the vehicle body connecting pin 36 rotates downward by means of the elastic restoring force of the spring member 38 (refer to Figure 6The body connecting pin 36 is hooked and fixed in the hook portion 42, thereby fixedly supporting the seat back frame 20 in an upright state.

[0064] When the vehicle body connecting pin 36 contacts the inclined surface portion 44 and further rotates, the spring member 38 is compressed due to the rotation of the connector bracket 50. In this case, the vehicle body connecting pin 36 falls into the hook portion 42 by the elastic restoring force generated at this time.

[0065] The hinge pin 52 passes through the spring member 38 and is supported and assembled with the spring member 38. Further, the spring member 38 has a first end fixedly coupled to the vehicle body connecting pin 36 and a second end fixedly coupled to the spring fixing part 34 of the main bracket 30. The spring fixing part 34 is provided at an upper portion of the main bracket 30.

[0066] In addition, the elastic guide 33 is assembled on the guide hole 32 of the main bracket 30, and is configured to prevent collision noise from being generated due to the vehicle body connection pin 36. The elastic guide 33 may be injection-molded with an elastic material such as rubber.

[0067] The sliding interlocking tilting device for a vehicle seat of the present disclosure constructed as described above can be applied to various vehicle seats. For example, the sliding interlocking tilting device can be applied to the rear seat of a pickup truck.

[0068] As is apparent from the above description, the present disclosure provides a sliding interlocking tilting device for a vehicle seat, which is constructed to provide a simpler structure than the sliding interlocking tilting device of the prior art, thereby not only reducing cost and weight but also preventing engagement noise (noise between components) from being generated during vehicle driving.

[0069] The effects of the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned herein will be clearly understood by those skilled in the art to which the present disclosure belongs based on the detailed description of the embodiments.

[0070] As described above, the embodiments of the present disclosure have been described in detail, and the terms or words used in the present specification and claims should not be understood as limited to the typical or dictionary meanings. In addition, since the embodiments described in this specification and the constructions shown in the accompanying drawings are only one embodiment of the present disclosure, the scope of the present disclosure is not limited to the above-mentioned embodiments. Various modifications and improvements made by those skilled in the art using the basic concepts of the present disclosure defined in the claims also fall within the scope of the present disclosure.

Claims

1. A sliding interlocking tilting device for a vehicle seat, the sliding interlocking tilting device comprising: The seat frame, which slides forward when unlocked; a seat back frame connected to the rear end of the seat cushion frame via a free hinge; A body connecting bracket, fixed to the body; a main bracket including an upper portion and a lower portion, the upper portion being fixed to an upper end of the seat back frame, the lower portion including a guide hole formed therein; as well as a body connecting pin passing through the guide hole and connected to the body connecting bracket, The guide hole has an elongated shape, and an extending direction of the guide hole enables the seat back frame to move downward without being interfered by the vehicle body connecting pin when the seat cushion frame slides forward.

2. The sliding interlocking tilting device according to claim 1, wherein: The vehicle body connecting pin extends through the connecting pin coupling hole of the connector bracket, and The connector bracket is coupled to a lower portion of the main bracket through a hinge pin, and includes a rear bracket component and a front bracket component, the rear bracket component being formed with the connection pin coupling hole, and the front bracket component being formed with a cable connection hole.

3. The sliding interlocking tilting device according to claim 2, wherein: The front bracket component is connected to the folding belt through a drive cable, the drive cable is connected to the cable connection hole, and when the folding belt is manipulated, the connector bracket rotates so that the body connection pin is disconnected from the hook portion, which is provided on the body connection bracket.

4. The sliding interlocking tilting device according to claim 3, wherein: The hook portion is disposed at a front end of the vehicle body coupling bracket and is formed to receive the vehicle body connecting pin.

5. The sliding interlocking tilting device according to claim 3, wherein: The vehicle body coupling bracket has an inclined surface portion formed to contact the vehicle body connecting pin and guide the vehicle body connecting pin to move upward when the seat back frame is deployed.

6. The sliding interlocking tilting device according to claim 5, wherein: The inclined surface portion is disposed in front of the hook portion.

7. The sliding interlocking tilting device according to claim 2, wherein: The main bracket is provided with a spring member which can be compressed by the rotation of the connector bracket and has a first end and a second end, the first end being fixed to the vehicle body connecting pin and the second end being fixed to a spring fixing part of the main bracket.

8. The sliding interlocking tilting device according to claim 1, wherein: The main support is provided with an elastic guide member, and the elastic guide member is assembled to the guide hole.

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