Seat volute variable center supporting structure and automobile seat

Abstract

The invention provides a seat volute variable center supporting structure and an automobile seat, and relates to the technical field of automobile seats. The seat volute variable center supporting structure comprises a seat basin, a seat backrest and a volute. The seat basin is pivoted with the seat backrest, a fixed supporting piece is fixedly arranged on the seat backrest, and the fixed supporting piece is positioned at the pivoted part of the seat basin and the seat backrest; a variable center supporting piece is pivoted to the seat backrest, a guide sliding groove is formed in the variable center supporting piece, a sliding block matched with the guide sliding groove is arranged on the seat basin, and the abutting face of the variable center supporting piece and the volute is far away from the volute in the process that the seat backrest is laid flat. One end of the volute is clamped on the seat basin, the other end of the volute is clamped on the fixed supporting piece, and when the seat backrest is laid flat, the abutting face of the variable center supporting piece and the volute is inwards concaved in the abutting face of the fixed supporting piece and the volute. An automobile seat includes a seat scroll variable center support structure. The technical effect that the using effect of the automobile seat volute is good is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, in particular to a seat scroll variable central support structure and an automobile seat. Background Art

[0002] At present, the backrests of seats in family cars, truck driver chairs, etc. all involve functions such as backward adjustment and forward adjustment, and the backward adjustment range can be from 90 degrees to 180 degrees, that is, the backrest can be laid flat for the driver to rest, etc. However, there is a structure in it that a spiral spring is needed to return the backrest from the flat state to normal use.

[0003] However, the volute is fixed to the seat back. Due to the characteristics of the return volute spring, as the fixed point of the outer end of the volute spring rotates around the center (the center of the inner circle is fixed), its restoring force will increase sharply. This will cause the backrest to continue to lie flat after it has not reached the required lying flat angle, and manual operation is very difficult. This will cause the driver and passengers to be very dissatisfied with the lying flat function experience. Another scenario is that if the backrest is already in a flat state and another passenger gets on the car, the seat needs to be operated to the use state. The backrest will immediately fall towards the operator at the moment of unlocking, and the backrest will hit the operator violently, which may easily cause an accident and pose a safety hazard. Summary of the invention

[0004] The object of the present invention is to provide a seat scroll variable central support structure and a car seat, so as to alleviate the technical problem of poor use experience of the seat resetting scroll in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a seat scroll variable central support structure, including a seat basin, a seat back and a scroll;

[0006] The seat basin is pivotally connected to the seat back, a fixed support member is fixedly arranged on the seat back, and the fixed support member is located at the pivotal connection between the seat basin and the seat back;

[0007] A variable center support is pivotally connected to the seat back, a guide slot is provided on the variable center support, a slider adapted to the guide slot is provided on the seat pan, and when the seat back swings relative to the seat pan, the slider can move relative to the guide slot, and the slider can control the variable center support to rotate relative to the seat back, so that the contact surface between the variable center support and the scroll is away from the scroll when the seat back is laid flat;

[0008] One end of the scroll is clamped on the seat basin, and the other end is clamped on the fixed support. When the seat back is laid flat, the abutting surface between the variable central support and the scroll is recessed inside the abutting surface between the fixed support and the scroll.

[0009] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the bidet is provided with a variable center control seat, and the sliding block is arranged on the variable center control seat.

[0010] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the variable center control seat has a first hanging ear for hanging with the scroll.

[0011] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the fixed support member adopts a fixed ring seat;

[0012] The fixed ring seat is fixedly arranged on the seat back, and the fixed ring seat is provided with an abutment plate capable of abutting against the scroll, and the abutment plate is provided with a second hanging ear for hanging with the scroll.

[0013] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the variable central support member includes a pivot seat, a control plate and a tension plate;

[0014] The seat back is fixedly provided with a pivot, the pivot seat is pivotally connected to the pivot, the control plate is located at the outer circle of the pivot seat, and the tension plate is arranged at the inner circle of the pivot seat;

[0015] The guide slot is provided on the control plate, and the tension plate can abut against the scroll.

[0016] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the guide groove includes an arc groove and a straight groove;

[0017] The arc groove and the straight groove are connected to each other, and when the seat back is laid flat, the slider is located in the straight groove.

[0018] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the cross-sections of the abutment plate and the tension plate are arc-shaped.

[0019] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein, when the slider is located in the linear groove, the outer edge of the tension plate is recessed inside the outer edge of the abutment plate.

[0020] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the pivot is welded to the seat back, and a convex seat for a user to support the pivot seat is provided on the seat back.

[0021] In a second aspect, an embodiment of the present invention provides a car seat, comprising the seat scroll variable central support structure as described above.

[0022] Beneficial effects:

[0023] The present invention provides a seat scroll variable center support structure, comprising a seat basin, a seat back and a scroll; the seat basin is pivotally connected to the seat back, a fixed support member is fixedly arranged on the seat back, and the fixed support member is located at the pivotal connection between the seat basin and the seat back; a variable center support member is pivotally connected to the seat back, a guide slide groove is provided on the variable center support member, a slider adapted to the guide slide groove is provided on the seat basin, when the seat back swings relative to the seat basin, the slider can move relative to the guide slide groove, and the slider can control the variable center support member to rotate relative to the seat back, so that the contact surface of the variable center support member and the scroll is away from the scroll during the process of laying the seat back flat; one end of the scroll is clamped on the seat basin, and the other end is clamped on the fixed support member, when the seat back is laid flat, the contact surface of the variable center support member and the scroll is concave inwardly than the contact surface of the fixed support member and the scroll.

[0024] Specifically, when the user lays the seat back flat, the fixed support and the variable center support are laid flat along with the seat back, and the scroll contracts during this process. In the early stage of the seat back laying flat process, the scroll is wrapped around the arc structure formed by the abutting surfaces of the fixed support and the variable center support. As the seat back is laid flat, the elastic potential energy of the scroll becomes larger and larger. At the end of the seat back laying flat process, the slider on the seat basin slides in the guide groove on the variable center support, and controls the variable center support to rotate at the pivot point between the variable center support and the seat back, so that the abutting surface between the middle variable center support and the scroll is away from the scroll, thereby reducing the radius of the arc structure of the scroll winding, thereby reducing the elastic potential energy of the scroll, allowing the user to lay the seat back flat better. Conversely, when the user resets the laid flat seat back, the scroll drives the seat back to reset, and at the same time the scroll drives the middle variable center support to reset, thereby improving the user experience and reducing the chance of danger.

[0025] The present invention provides a car seat, comprising a seat scroll variable central support structure. Compared with the prior art, the car seat has the above advantages, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a seat scroll variable central support structure provided by an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the structure of a variable central support member in a seat scroll variable central support structure provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of a seat backrest in a vertical state of a seat scroll variable central support structure provided by an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of a seat backrest of a seat scroll variable central support structure provided by an embodiment of the present invention in a transition state between vertical and flat;

[0031] Figure 5 A schematic diagram of a seat backrest in a flat state of a seat scroll variable central support structure provided by an embodiment of the present invention;

[0032] Figure 6 The scroll torque diagram of the seat scroll variable center support structure provided by the embodiment of the present invention and the prior art structure.

[0033] icon:

[0034] 100 - bidet; 110 - slider; 120 - variable center control seat; 130 - first hanging ear;

[0035] 200 - seat back;

[0036] 300 - snail roll;

[0037] 400 - fixed support member; 410 - abutment plate; 420 - second hanging ear;

[0038] 500 - variable center support; 510 - guide slide; 511 - arc groove; 512 - straight groove; 520 - pivot seat; 530 - control plate; 540 - tension plate; 550 - pivot. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0044] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the present embodiment provides a seat scroll variable center support structure, including a seat pan 100, a seat back 200 and a scroll 300; the seat pan 100 is pivotally connected to the seat back 200, and a fixed support member 400 is fixedly arranged on the seat back 200, and the fixed support member 400 is located at the pivotal position between the seat pan 100 and the seat back 200; a variable center support member 500 is pivotally connected to the seat back 200, and a guide slot 510 is provided on the variable center support member 500, and a slider 110 adapted to the guide slot 510 is provided on the seat pan 100, and a slider 110 adapted to the guide slot 510 is provided on the seat back 200. When swinging relative to the seat basin 100, the slider 110 can move relative to the guide slot 510, and the slider 110 can control the variable center support 500 to rotate relative to the seat back 200, so that the contact surface between the variable center support 500 and the scroll 300 is away from the scroll 300 when the seat back 200 is laid flat; one end of the scroll 300 is clamped on the seat basin 100, and the other end is clamped on the fixed support 400. When the seat back 200 is laid flat, the contact surface between the variable center support 500 and the scroll 300 is concave inside the contact surface between the fixed support 400 and the scroll 300.

[0045] Specifically, when the user lays down the seat back 200, the fixed support member 400 and the variable center support member 500 are laid flat along with the seat back 200. During this process, the scroll 300 contracts. In the early stage of the process of laying down the seat back 200, the scroll 300 is wound around the arc structure formed by the abutting surfaces of the fixed support member 400 and the variable center support member 500. As the seat back 200 is laid flat, the elastic potential energy of the scroll 300 becomes larger and larger. At the end of the process of laying down the seat back 200, the slider 110 on the seat pan 100 slides in the guide groove 510 on the variable center support member 500, and The variable center support member 500 is controlled to rotate at the pivotal connection between the variable center support member 500 and the seat back 200, so that the contact surface between the middle variable center support member 500 and the scroll 300 is away from the scroll 300, thereby reducing the radius of the arc structure of the scroll 300, thereby reducing the elastic potential energy of the scroll 300, allowing the user to lay the seat back 200 flat better. Conversely, when the user resets the flattened seat back 200, the scroll 300 drives the seat back 200 to reset, and at the same time the scroll 300 drives the middle variable center support member 500 to reset, thereby improving the user experience and reducing the probability of danger.

[0046] It should be pointed out that the scroll 300 in the drawings of the specification is a schematic structure. In actual use, the inner circle of the scroll 300 can tightly abut against both the fixed support 400 and the variable center support 500, so the swing of the variable center support 500 can adjust the tightening strength of the scroll 300.

[0047] See also Figure 1 - Figure 5As shown, in an optional solution of the present embodiment, the bidet 100 is provided with a variable center control seat 120 , and the slider 110 is disposed on the variable center control seat 120 .

[0048] Specifically, the variable center control seat 120 is fixedly disposed on the basin 100 , and the slider 110 is disposed on the variable center control seat 120 , and the slider 110 can be adapted to the guide groove 510 of the middle variable center support 500 .

[0049] The variable center control seat 120 has a first hanging ear 130 for hanging with the scroll 300 , and one end of the scroll 300 can be hung on the first hanging ear 130 .

[0050] See also Figure 1 - Figure 5 As shown, in an optional solution of this embodiment, the fixed support member 400 adopts a fixed ring seat; the fixed ring seat is fixedly set on the seat back 200, and has an abutment plate 410 that can abut against the scroll 300, and the abutment plate 410 has a second hanging ear 420 for hanging with the scroll 300.

[0051] Specifically, the fixed ring seat is fixedly set on the seat back 200, and an abutment plate 410 is set on the fixed ring seat. The abutment plate 410 has an abutment surface. After one end of the scroll 300 is hung on the second hanging ear 420, the inner circle of the scroll 300 can abut on the abutment surface of the abutment plate 410.

[0052] See also Figure 1 - Figure 5 As shown, in an optional scheme of this embodiment, the variable center support member 500 includes a pivot seat 520, a control plate 530 and a tension plate 540; a pivot 550 is fixedly arranged on the seat back 200, the pivot seat 520 is pivoted on the pivot 550, the control plate 530 is located on the outer ring of the pivot seat 520, and the tension plate 540 is arranged on the inner ring of the pivot seat 520; the guide groove 510 is opened on the control plate 530, and the tension plate 540 can abut against the scroll 300.

[0053] The guide groove 510 includes an arc groove 511 and a linear groove 512 ; the arc groove 511 and the linear groove 512 are interconnected, and when the seat back 200 is laid flat, the slider 110 is located in the linear groove 512 .

[0054] The cross sections of the contact plate 410 and the tension plate 540 are arc-shaped.

[0055] Among them, when the slider 110 is located in the linear groove 512, the outer edge of the tension plate 540 is recessed into the outer edge of the abutment plate 410, and the abutment surface of the tension plate 540 is located at the outer edge of the tension plate 540, and the abutment surface of the abutment plate 410 is located at the outer edge of the abutment plate 410.

[0056] The pivot 550 is welded on the seat back 200 , and a convex seat for supporting the pivot seat 520 is provided on the seat back 200 . The convex seat can make the pivot seat 520 rotate straight without warping.

[0057] Specifically, the pivot seat 520, the control plate 530 and the tension plate 540 are an integrated structure. When the seat back 200 is laid flat, the seat back 200 can drive the pivot seat 520 to move, and the guide groove 510 on the control plate 530 moves synchronously with the control plate 530. Because the slider 110 on the seat basin 100 is stationary, the slider 110 can make the control plate 530 rotate relative to the pivot 550 when sliding in the guide groove 510, thereby adjusting the position of the tension plate 540 relative to the scroll 300, thereby adjusting the tension of the scroll 300 through the tension plate 540.

[0058] It should be pointed out that when the slider 110 is located in the arc groove 511 of the guide groove 510 and slides, the position of the tension plate 540 relative to the scroll 300 will not be adjusted, that is, the tension plate 540 is stationary relative to the abutment plate 410; when the slider 110 is located in the straight groove 512 of the guide groove 510 and slides, the position of the tension plate 540 relative to the scroll 300 can be adjusted so that the tension plate 540 gradually moves away from the scroll 300, that is, the tension plate 540 moves relative to the abutment plate 410 toward the pivot center of the seat basin 100 and the seat back 200.

[0059] See also Figure 5 As shown, after the seat back 200 is completely laid flat, the tension plate 540 is closer to the pivot center of the seat pan 100 and the seat back 200 than the abutment plate 410. Therefore, the innermost diameter of the scroll 300 wrapped around the abutment plate 410 and the tension plate 540 becomes smaller. By reducing the curling radius of the scroll 300, the user can better lay the seat back flat.

[0060] See also Figure 3 , Figure 5 and Figure 6As shown in the figure, for example, during the process of the seat back 200 being laid flat backward from a vertical 90 degrees, within the first angle of initial laying flat, the elastic force of the scroll 300 is in an iso-proportional area (the subsequent second angle of laying flat will cause the elastic force of the scroll 300 to increase sharply), and the elastic force release of the scroll 300 within the first angle will not cause danger to the user. During the process of continuing to lay back, the slider 110 enters the straight groove 512 from the arc groove 511, and the sliding distance of the slider 110 in the straight groove 512 corresponds to the swing angle of the seat back 200. The dynamic angle corresponds to the second angle. At this time, the tension plate of the variable center support 500 moves backward relative to the abutment plate 410, thereby reducing the curling radius of the scroll 300, thereby absorbing the sharply increased elastic potential energy of the scroll 300, so that the elastic potential energy of the scroll 300 increases slowly or does not increase so that it remains within the safety range of the first angle, that is, the elastic potential energy of the scroll 300 does not rise sharply, thereby making it easier for the user to lay the seat back 200 flat, and the user can put the seat back 200 to the desired position with a smaller thrust. In addition, when the seat back 200 is restored to the vertical state, the scroll 300 is released under the action of its own elastic potential energy (the scroll 300 transitions from a small curling radius to a large curling radius, that is, the elastic potential energy is released to drive the seat back 200 to swing). At this time, the elastic force of the scroll 300 is within a safe range, so that the swinging speed and strength of the seat back 200 are within the controllable range of the user, and will not cause harm to the user. At the same time, during the release of the scroll 300, the slider 110 synchronously moves from the straight groove 512 to the arc groove 511. During this process, the tension plate 540 of the variable center support 500 will not drive the scroll 300 to accelerate, but the scroll 300 drives the tension plate 540 to reset, so that the elastic force of the seat back 200 when it is restored is within a safe range and will not cause harm to the user.

[0061] It should be pointed out that during the recovery process of the seat back 200, when the slider 110 moves from the straight groove 512 to the arc groove 511, the scroll 300 is first released to drive the seat back 200 to reset, and the seat back 200 drives the variable center support 500 to move, and the scroll 300 first transitions from a small curling radius to a large curling radius, and the scroll 300 first releases the internal space, and then drives the tension plate 540 of the variable center support 500 to move to the space released in the scroll 300, thereby resetting the tension plate 540. During this process, the tension plate 540 will not drive the scroll 300 to transition to a large curling radius, thereby not increasing the elastic force of the scroll 300 and not causing the reset speed of the seat back 200 to increase.

[0062] That is, during the process of laying flat the seat back 200, the scroll 300 is wound around the tension plate 540, and the tension plate 540 moves inwardly under the action of both the slider 110 and the linear groove 512, thereby providing additional space for the contraction of the scroll 300, so that the scroll 300 changes from a large curling radius to a small curling radius, thereby absorbing the sharply increased elastic potential energy of the scroll 300 when the seat back 200 is laid flat, so that the elastic force of the scroll 300 is within an appropriate range, allowing the user to lay the seat back 200 flat with a smaller thrust.

[0063] This embodiment provides a car seat, including a seat scroll variable central support structure.

[0064] Specifically, the automobile seat provided in this embodiment has the advantages of the above-mentioned seat scroll variable central support structure compared with the prior art, which will not be described in detail here.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A seat scroll variable center support structure, characterized in that: include: A seat basin (100), a seat back (200) and a scroll (300); The seat basin (100) is pivotally connected to the seat back (200); a fixed support member (400) is fixedly arranged on the seat back (200); the fixed support member (400) is located at the pivotal connection between the seat basin (100) and the seat back (200); A variable center support member (500) is pivotally connected to the seat back (200), a guide slot (510) is provided on the variable center support member (500), and a slider (110) adapted to the guide slot (510) is provided on the seat basin (100); when the seat back (200) swings relative to the seat basin (100), the slider (110) can move relative to the guide slot (510), and the slider (110) can control the variable center support member (500) to rotate relative to the seat back (200), so that when the seat back (200) is laid flat, the contact surface between the variable center support member (500) and the scroll (300) is away from the scroll (300); One end of the scroll (300) is clamped on the seat basin (100), and the other end is clamped on the fixed support member (400). When the seat back (200) is laid flat, the contact surface between the variable central support member (500) and the scroll (300) is recessed inside the contact surface between the fixed support member (400) and the scroll (300).

2. The seat scroll variable center support structure according to claim 1, characterized in that: The bidet (100) is provided with a variable center control seat (120), and the sliding block (110) is arranged on the variable center control seat (120).

3. The seat scroll variable center support structure according to claim 2, characterized in that: The variable center control seat (120) has a first hanging ear (130) for hanging with the scroll (300).

4. The seat scroll variable center support structure according to claim 1, characterized in that: The fixed support member (400) adopts a fixed ring seat; The fixed ring seat is fixedly arranged on the seat back (200), and the fixed ring seat is provided with an abutment plate (410) capable of abutting against the scroll (300), and the abutment plate (410) is provided with a second hanging ear (420) for hanging with the scroll (300).

5. The seat scroll variable center support structure according to claim 4, characterized in that: The variable central support member (500) comprises a pivot seat (520), a control plate (530) and a tension plate (540); A pivot (550) is fixedly arranged on the seat back (200), the pivot seat (520) is pivotally connected to the pivot (550), the control plate (530) is located on the outer ring of the pivot seat (520), and the tension plate (540) is arranged on the inner ring of the pivot seat (520); The guide slot (510) is provided on the control plate (530), and the tension plate (540) is capable of abutting against the scroll (300).

6. The seat scroll variable center support structure according to claim 5, characterized in that: The guide groove (510) comprises an arc groove (511) and a straight groove (512); The arc groove (511) and the straight groove (512) are interconnected, and when the seat back (200) is laid flat, the slider (110) is located in the straight groove (512).

7. The seat scroll variable center support structure according to claim 6, characterized in that: The cross sections of the abutment plate (410) and the tension plate (540) are arc-shaped.

8. The seat scroll variable center support structure according to claim 7, characterized in that: When the sliding block (110) is located in the linear groove (512), the outer edge of the tension plate (540) is recessed into the outer edge of the abutment plate (410).

9. The seat scroll variable center support structure according to claim 5, characterized in that: The pivot shaft (550) is welded to the seat back (200), and a convex seat for a user to support the pivot seat (520) is provided on the seat back (200).

10. A car seat, characterized in that: The invention comprises the seat scroll variable central support structure as described in any one of claims 1 to 9.

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