Headrest turnover mechanism with self-locking function and automobile seat

Abstract

The utility model provides a headrest turnover mechanism with a self-locking function and an automobile seat, and relates to the technical field of automobile seat equipment. The headrest turnover mechanism with the self-locking function comprises a seat headrest, a headrest fixing support, a headrest bearing support, a driving assembly, a blocking point support, a first connecting rod and a second connecting rod. One end of the headrest bearing support is pivoted with the headrest fixing support, the other end of the headrest bearing support is connected with the seat headrest, and a reset elastic part is arranged between the headrest fixing support and the headrest bearing support; the driving assembly is arranged on the headrest fixing support, one end of the first connecting rod and one end of the second connecting rod are connected with the driving motor, the other end of the first connecting rod is pivoted to the headrest fixing support, the other end of the second connecting rod is pivoted to the headrest bearing support, and the first connecting rod and the second connecting rod coincide after the seat headrest is reset. The automobile seat comprises the headrest turnover mechanism with the self-locking function. The technical effect of improving the stability of the headrest is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile seat equipment, and particularly relates to a headrest turnover mechanism with a self-locking function and an automobile seat. BACKGROUND

[0002] In the current automobile market, the demand for seat reclining into a bed has become more and more common. When the second-row seat is reclined backward, the headrest will interfere with the vehicle body, and a set of mechanism is needed to turn the headrest 90° and hide it under the backrest.

[0003] In the prior art, the headrest relies on the self-structure locking of the driving motor. Since the headrest has a large lever relative to the mechanism, the mechanism is under great stress in the backrest static strength experiment, and the mechanism itself has very high strength requirements. Moreover, since the driving motor itself has a movement gap, the gap on the headrest will be enlarged through the lever, which makes the headrest stability worse. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a headrest turnover mechanism with a self-locking function and an automobile seat to alleviate the technical problem of poor headrest stability in the prior art.

[0005] In a first aspect, the utility model embodiment provides a headrest turnover mechanism with a self-locking function, which comprises a seat headrest, a headrest fixed support, a headrest bearing support, a driving assembly, a blocking point support, a first connecting rod, and a second connecting rod.

[0006] The headrest fixed support is arranged on the seat backrest, one end of the headrest bearing support is pivotally connected with the headrest fixed support, and the other end is connected with the seat headrest. A reset elastic member is arranged between the headrest fixed support and the headrest bearing support.

[0007] The driving assembly is arranged on the headrest fixed support. One end of each of the first connecting rod and the second connecting rod is connected with the driving assembly. The other end of the first connecting rod is pivotally connected with the headrest fixed support, and the other end of the second connecting rod is pivotally connected with the headrest bearing support. The first connecting rod and the second connecting rod coincide after the seat headrest is reset.

[0008] The blocking point support is arranged on the headrest fixed support. Limiting blocking columns capable of abutting against the blocking point support are arranged on the first connecting rod and the second connecting rod.

[0009] In combination with the first aspect, the utility model embodiment provides a possible implementation manner of the first aspect, wherein the above-mentioned driving assembly comprises a motor mounting seat, a driving motor, and a driving screw rod.

[0010] The motor mounting seat is fixedly installed on the headrest fixed support, the driving motor is rotatably arranged in the motor mounting seat, and the driving screw rod is arranged on the driving motor.

[0011] One end of each of the first connecting rod and the second connecting rod is pivotally connected with the driving screw rod.

[0012] With reference to the first aspect, an embodiment of the utility model provides a possible implementation manner of the first aspect, wherein the motor mounting seat is provided with a motor mounting hole, the driving motor is provided with a screw rod driving seat, and the screw rod driving seat is inserted into the motor mounting hole.

[0013] The driving screw rod is inserted into the screw rod driving seat.

[0014] With reference to the first aspect, an embodiment of the utility model provides a possible implementation manner of the first aspect, wherein an arc-shaped groove is formed in the motor mounting seat, and the driving screw rod is located in the arc-shaped groove, so that when the driving motor drives the driving screw rod, the driving screw rod can swing along with the movement of the first connecting rod and the second connecting rod.

[0015] With reference to the first aspect, an embodiment of the utility model provides a possible implementation manner of the first aspect, wherein the mounting hole is provided with a rotation limiting hole, and the screw rod driving seat is provided with a limiting block that can be matched with the rotation limiting hole.

[0016] With reference to the first aspect, an embodiment of the utility model provides a possible implementation manner of the first aspect, wherein the motor mounting hole is provided with a limiting step close to one side of the headrest fixed support, and the screw rod driving seat is provided with a limiting edge matched with the limiting step.

[0017] With reference to the first aspect, an embodiment of the utility model provides a possible implementation manner of the first aspect, wherein the blocking point support is located above the driving assembly.

[0018] With reference to the first aspect, an embodiment of the utility model provides a possible implementation manner of the first aspect, wherein the blocking point support is provided with a blocking groove matched with the limiting block.

[0019] With reference to the first aspect, an embodiment of the utility model provides a possible implementation manner of the first aspect, wherein the first connecting rod and the second connecting rod are both provided with a flange reinforcing rib.

[0020] Secondly, the utility model provides an automobile seat, which comprises the headrest turnover mechanism with the self-locking function.

[0021] Beneficial effects:

[0022] The utility model discloses an embodiment provides a headrest turnover mechanism with self locking function, including seat headrest, headrest fixed support, headrest bearing support, drive assembly, stop point support, first connecting rod and second connecting rod, headrest fixed support sets up on seat back, and one end of headrest bearing support is pivoted with headrest fixed support, and the other end is connected with seat headrest, and reset elastic member is arranged between headrest fixed support and headrest bearing support, drive assembly sets up on headrest fixed support, and one end of first connecting rod and second connecting rod is connected with drive assembly, and the other end of first connecting rod is pivoted with headrest fixed support, and the other end of second connecting rod is pivoted with headrest bearing support, and first connecting rod and second connecting rod coincide after seat headrest reset, stop point support sets up on headrest fixed support, and the limiting stop post that can be abutted with stop point support is arranged on both first connecting rod and second connecting rod.

[0023] Specifically, in working, drive assembly works and drives first connecting rod and second connecting rod to swing, and the swing of first connecting rod and second connecting rod can drive headrest bearing support to swing relative to headrest fixed support, thereby adjusting the swing angle of seat headrest, when seat headrest needs to reset, drive assembly drives first connecting rod and second connecting rod to swing upwards, and first connecting rod and second connecting rod can drive seat headrest to reset, and first connecting rod and second connecting rod can abut with stop point support, thereby making seat headrest have no swing gap, and when seat headrest resets, first connecting rod and second connecting rod coincide, thereby realizing the self locking of seat headrest.

[0024] The utility model discloses an embodiment provides a car seat, including headrest turnover mechanism with self locking function. Car seat compares with prior art has above-mentioned advantage, this place does not repeat here. ACCURACY

[0025] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in prior art, the following will briefly introduce the drawing needed to be used in the specific embodiment or prior art description, obviously, the drawing in the following description is some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor according to these drawings.

[0026] Figure 1 The structure schematic view of headrest turnover mechanism with self locking function provided by the utility model embodiment is installed on seat backrest;

[0027] Figure 2 The structure schematic view of headrest turnover mechanism with self locking function provided by the utility model embodiment is installed on seat backrest;

[0028] Figure 3The schematic view of the driving assembly of the headrest overturning mechanism with the self-locking function provided by the utility model embodiment;

[0029] Figure 4 The schematic view of the driving motor and the driving screw rod of the driving assembly of the headrest overturning mechanism with the self-locking function provided by the utility model embodiment;

[0030] Figure 5 The schematic view of the motor mounting seat and the driving screw rod of the driving assembly of the headrest overturning mechanism with the self-locking function provided by the utility model embodiment.

[0031] Icon:

[0032] 100 - seat headrest;

[0033] 200 - headrest fixing support; 210 - reset elastic element;

[0034] 300 - headrest bearing support;

[0035] 400 - driving assembly; 410 - motor mounting seat; 411 - motor mounting hole; 412 - arc-shaped groove; 413 - rotation limiting hole; 414 - limiting step; 420 - driving motor; 421 - screw rod driving seat; 422 - limiting block; 423 - limiting edge; 430 - driving screw rod;

[0036] 500 - blocking point support; 510 - blocking groove;

[0037] 610 - first connecting rod; 620 - second connecting rod; 630 - limiting block column;

[0038] 700 - seat backrest. DETAILED DESCRIPTION

[0039] The technical solutions of the utility model will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0040] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and so on the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the restriction of the utility model.

[0041] In addition, the term "first", "second" is only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0042] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be broadly understood, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be the communication or interaction relationship of two elements inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] The utility model will be further described in detail below by specific examples and in conjunction with the drawings.

[0044] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 And Figure 5As shown, the embodiment provides a headrest turnover mechanism with self-locking function, comprising a seat headrest 100, a headrest fixed support 200, a headrest bearing support 300, a driving assembly 400, a blocking point support 500, a first connecting rod 610 and a second connecting rod 620; the headrest fixed support 200 is arranged on a seat backrest 700, one end of the headrest bearing support 300 is pivotally connected with the headrest fixed support 200, and the other end is connected with the seat headrest 100, and a reset elastic member 210 is arranged between the headrest fixed support 200 and the headrest bearing support 300; the driving assembly 400 is arranged on the headrest fixed support 200, one end of each of the first connecting rod 610 and the second connecting rod 620 is connected with the driving assembly 400, the other end of the first connecting rod 610 is pivotally connected with the headrest fixed support 200, and the other end of the second connecting rod 620 is pivotally connected with the headrest bearing support 300; after the seat headrest 100 is reset, the first connecting rod 610 and the second connecting rod 620 overlap; the blocking point support 500 is arranged on the headrest fixed support 200, and a limiting block column 630 capable of abutting against the blocking point support 500 is arranged on each of the first connecting rod 610 and the second connecting rod 620.

[0045] Specifically, in operation, the driving assembly 400 drives the first connecting rod 610 and the second connecting rod 620 to swing, the swinging of the first connecting rod 610 and the second connecting rod 620 drives the headrest bearing support 300 to swing relative to the headrest fixed support 200, so as to adjust the swinging angle of the seat headrest 100; when the seat headrest 100 needs to be reset, the driving assembly 400 drives the first connecting rod 610 and the second connecting rod 620 to swing upward, the first connecting rod 610 and the second connecting rod 620 can drive the seat headrest 100 to reset, and the first connecting rod 610 and the second connecting rod 620 can abut against the blocking point support 500, so that the seat headrest 100 has no swinging gap, and when the seat headrest 100 is reset, the first connecting rod 610 and the second connecting rod 620 overlap, thereby realizing self-locking of the seat headrest 100.

[0046] Among them, the driving assembly 400 can drive the seat headrest 100 to turn over 90 degrees, so that the seat headrest 100 can be completely folded and stored.

[0047] It should be pointed out that, in the normal use position of the seat headrest 100, the first connecting rod 610 and the second connecting rod 620 are in a self-locking state, which ensures that the force transmission of the seat headrest 100 under stress is through the first connecting rod 610 and the second connecting rod 620 instead of the driving assembly 400, thereby reducing the strength requirement of the driving assembly 400 and lowering the requirement.

[0048] The stop point support 500 is provided with a rubber coating. The stop point support 500 is provided with a stop groove 510 which is matched with the limiting stop. In the normal use state of the seat headrest 100 (not folded and stored), the first connecting rod 610 and the second connecting rod 620 can abut in the stop groove 510 of the stop point support 500, and the rubber coating is covered on the stop point support 500. The rubber coating can provide energy absorption effect in the impact of the seat headrest 100, help to eliminate the gap of the seat headrest 100, and optimize the state of the driving assembly 400 in the limit position.

[0049] In addition, the reset elastic member 210 is arranged between the headrest fixed support 200 and the headrest bearing support 300. The reset elastic member 210 helps to eliminate the system gap of the headrest overturning mechanism with self-locking function, and assists the reset of the seat headrest 100 and reduces the power of the driving assembly 400.

[0050] It should be pointed out that the limiting stop column 630 is arranged on the first connecting rod 610 and the second connecting rod 620. The limiting stop column 630 can provide additional stability support for the seat headrest 100, offset the unbalanced force of the single-sided screw, and improve the overall strength of the system.

[0051] The first connecting rod 610 and the second connecting rod 620 are both provided with a flange reinforcing rib. The flange reinforcing rib improves the structural strength of the first connecting rod 610 and the second connecting rod 620.

[0052] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , in the optional scheme of the embodiment, the driving assembly 400 includes a motor mounting seat 410, a driving motor 420 and a driving screw 430. The motor mounting seat 410 is fixedly installed on the headrest fixed support 200. The driving motor 420 is rotatably arranged in the motor mounting seat 410. The driving screw 430 is arranged on the driving motor 420. One end of each of the first connecting rod 610 and the second connecting rod 620 is pivotally connected with the driving screw 430.

[0053] The motor mounting seat 410 is provided with a motor mounting hole 411. The driving motor 420 is provided with a screw driving seat 421. The screw driving seat 421 is inserted into the motor mounting hole 411. The driving screw 430 is inserted into the screw driving seat 421.

[0054] The motor mounting seat 410 is provided with an arc-shaped slot 412, and the driving screw 430 is located in the arc-shaped slot 412, so that the driving screw 430 can swing with the movement of the first connecting rod 610 and the second connecting rod 620 when the driving motor 420 drives the driving screw 430.

[0055] The mounting hole is provided with a rotation limiting hole 413, and the screw driving seat 421 is provided with a limiting block 422 that can be matched with the rotation limiting hole 413.

[0056] Specifically, the driving motor 420 can drive the driving screw 430 to move relative to the driving motor 420, the movement of the driving screw 430 can drive the first connecting rod 610 and the second connecting rod 620 to swing upward or downward, and the first connecting rod 610 and the second connecting rod 620 can passively drive the driving screw 430 to swing when the first connecting rod 610 and the second connecting rod 620 swing upward or downward, and the swinging of the driving screw can drive the screw driving seat 421 to rotate in the motor mounting hole 411 of the motor mounting seat 410.

[0057] The motor mounting hole 411 is provided with a limiting step 414 close to one side of the headrest fixed support 200, and the screw driving seat 421 is provided with a limiting shoulder 423 matched with the limiting step 414. Through the limiting step 414 and the limiting shoulder 423, when the motor mounting seat 410 is installed on the headrest fixed support 200, the screw driving seat 421 is limited between the headrest fixed support 200 and the motor mounting seat 410.

[0058] The embodiment provides an automobile seat with a headrest turnover mechanism with a self-locking function.

[0059] Specifically, the automobile seat provided by the embodiment has the advantages of the headrest turnover mechanism with a self-locking function compared with the prior art, which will not be described here.

[0060] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A headrest flipping mechanism with a self-locking function, characterized in that, The utility model relates to a seat headrest (100), headrest fixed support (200), headrest bearing support (300), drive assembly (400), stop point support (500), first connecting rod (610) and second connecting rod (620) are included: Headrest fixed support (200) is arranged on seat backrest (700), one end of headrest bearing support (300) is pivotally connected with headrest fixed support (200), and the other end is connected with seat headrest (100), and reset elastic member (210) is arranged between headrest fixed support (200) and headrest bearing support (300); Drive assembly (400) is arranged on headrest fixed support (200), one end of first connecting rod (610) and second connecting rod (620) is connected with drive assembly (400), the other end of first connecting rod (610) is pivotally connected with headrest fixed support (200), and the other end of second connecting rod (620) is pivotally connected with headrest bearing support (300), and first connecting rod (610) and second connecting rod (620) coincide after the reset of seat headrest (100); Stop point support (500) is arranged on headrest fixed support (200), and limiting stop post (630) capable of abutting with stop point support (500) is arranged on first connecting rod (610) and second connecting rod (620). Drive assembly (400) includes motor mounting seat (410), drive motor (420) and drive screw (430); 2. The headrest reclining mechanism having a self-locking function according to claim 1, wherein Motor mounting seat (410) is fixedly installed on headrest fixed support (200), drive motor (420) is rotatably arranged in motor mounting seat (410), and drive screw (430) is arranged on drive motor (420); One end of first connecting rod (610) and second connecting rod (620) is pivotally connected with drive screw (430). Motor mounting seat (410) is provided with motor mounting hole (411), drive motor (420) is provided with screw rod drive seat (421), and screw rod drive seat (421) is inserted in motor mounting hole (411); 3. The headrest reclining mechanism having a self-locking function according to claim 2, characterized in that, Drive screw (430) is inserted in screw rod drive seat (421). Arc-shaped groove (412) is formed in motor mounting seat (410), and drive screw (430) is located in arc-shaped groove (412), so that drive screw (430) can swing along with the movement of first connecting rod (610) and second connecting rod (620) when drive motor (420) drives drive screw (430).

4. The headrest reclining mechanism having a self-locking function according to claim 3, wherein Rotary limiting hole (413) is formed in the mounting hole, and limiting stop block (422) capable of adapting to rotary limiting hole (413) is arranged on screw rod drive seat (421).

5. The headrest reclining mechanism having a self-locking function according to claim 4, wherein ​ 6. The headrest reclining mechanism having a self-locking function according to claim 3, wherein The motor mounting hole (411) is provided with a limiting step (414) near one side of the headrest fixing support (200), and the screw rod driving seat (421) is provided with a limiting stop edge (423) matched with the limiting step (414).

7. The headrest reclining mechanism having a self-locking function according to claim 1, wherein The stop point support (500) is provided with a stop groove (510) matched with the limiting stop edge.

8. The headrest reclining mechanism having a self-locking function according to claim 7, wherein The stop point support (500) is provided with a rubber coating layer.

9. The headrest reclining mechanism having a self-locking function according to claim 1, wherein The first connecting rod (610) and the second connecting rod (620) are both provided with a flange reinforcing rib.

10. An automotive seat characterized by comprising: The headrest turnover mechanism with the self-locking function comprises the headrest turnover mechanism with the self-locking function according to any one of claims 1-9.

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