Seat headrest folding structure and seat headrest
By employing a limiting rod and spline transmission in the headrest, the problem of large gaps during headrest folding is solved, thereby improving the stability of headrest flipping and the strength of the backrest.
Patent Information
- Application Number
- CN202520552127.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Existing car seat headrests have large gaps in movement during folding, which are noticeable to passengers. Furthermore, the gaps in the drive motor movement are amplified by levers, affecting the static strength test of the backrest.
The drive motor is fixed on the mounting base, and the headrest drive component is rotatably connected. The swing range of the headrest support is limited by the cooperation of the limit rod and the limit component. Combined with the internal spline and external spline transmission, the gap between the drive motor and the headrest is reduced, and the stability is improved.
It effectively reduces the movement gap during the headrest flipping process, improves the stability of the headrest after flipping and the static strength of the backrest, and meets the passenger's requirements for gap performance.
Smart Images
Figure CN223821541U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of automobile seat, specifically, seat headrest folding structure and seat headrest. BACKGROUND
[0002] In the current automobile market, the demand of seat reclining into bed has become more and more common. When the second row seat is reclined back, the headrest will interfere with the vehicle body, and a set of mechanism is needed to make the headrest turn over 90° and hide under the backrest. The mechanism is arranged in the seat backrest, and the structure arrangement needs to be as compact as possible. Since the gap of the mechanism will be enlarged on the headrest and perceived by the passenger, the gap performance requirement is higher.
[0003] The headrest is locked by the driving motor itself structure, and 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 strength requirement of the mechanism itself is very high. And since the driving motor itself has a movement gap, the gap on the headrest will be more obvious after being enlarged by the lever. SUMMARY
[0004] The utility model aims at providing a seat headrest folding structure and a seat headrest to alleviate the technical problem of large headrest movement gap in the prior art.
[0005] In a first aspect, the utility model provides a seat headrest folding structure, which comprises a mounting base, a driving motor, a headrest limiting piece, a headrest driving piece and a headrest support seat.
[0006] The driving motor is fixedly arranged on the mounting base, the headrest driving piece is rotatably arranged on the mounting base, the driving motor is in transmission connection with the headrest driving piece, and the headrest support seat is arranged on the headrest driving piece.
[0007] The headrest limiting piece is arranged on the mounting base, and a limiting rod for adapting to the headrest limiting piece is arranged on the headrest driving piece to limit the swing range of the headrest support seat.
[0008] In combination with the first aspect, the utility model provides a possible implementation manner of the first aspect, wherein the mounting base comprises a framework support and a cross pipe support.
[0009] The cross pipe support is fixedly arranged on the framework support, and the headrest driving piece is rotatably arranged on the cross pipe support.
[0010] In combination with the first aspect, the utility model provides a possible implementation manner of the first aspect, wherein the headrest driving piece comprises an external bearing tube and an internal spline.
[0011] The external bearing pipe is rotatably mounted on the transverse pipe support, and the external bearing pipe is connected with the driving motor through internal splines.
[0012] The headrest support seat is arranged on the external bearing pipe.
[0013] With reference to the first aspect, in an embodiment of the first aspect, the headrest driving member further comprises an internal driving pipe, the internal driving pipe is fixedly inserted into the external bearing pipe, and the internal driving pipe is fixedly connected with the internal splines.
[0014] With reference to the first aspect, in an embodiment of the first aspect, a bushing is arranged between the transverse pipe support and the external bearing pipe.
[0015] With reference to the first aspect, in an embodiment of the first aspect, the headrest limiting member comprises a plurality of limiting stop columns.
[0016] The driving motor is provided with a mounting plate, the mounting plate is mounted on the transverse pipe support through the plurality of limiting stop columns, and the internal splines are located between the mounting plate and the transverse pipe support.
[0017] The limiting rod is arranged on the internal splines, and the limiting rod can abut against the limiting stop column.
[0018] With reference to the first aspect, in an embodiment of the first aspect, a side of the transverse pipe support close to the limiting stop column is provided with an auxiliary limiting baffle, and the auxiliary limiting baffle can abut against the limiting rod.
[0019] With reference to the first aspect, in an embodiment of the first aspect, the driving motor is provided with a speed reducer, and the speed reducer is provided with external splines matched with the internal splines.
[0020] With reference to the first aspect, in an embodiment of the first aspect, the external bearing pipe is expansion-tight connected with the bushing.
[0021] Secondly, the utility model provides a seat headrest, which comprises the seat headrest folding structure.
[0022] Beneficial effects:
[0023] The utility model discloses an embodiment provides a seat headrest folding structure, including installation base, drive motor, headrest limiting piece, headrest drive part and headrest support seat, drive motor is fixedly arranged on the installation base, and headrest drive part rotatable is arranged on the installation base, and drive motor is transmission connection with headrest drive part, and headrest support seat sets up on headrest drive part, headrest limiting piece sets up on the installation base, and the limiting rod for adapting with headrest limiting piece is provided on headrest drive part to limit the swing range of headrest support seat.
[0024] Specifically, when the seat headrest needs to be folded, the drive motor drives the headrest drive part to work, so that the headrest drive part drives the headrest support seat to overturn, and the seat headrest is completed to overturn, in the overturning process, the limiting rod on the headrest drive part can abut against the headrest limiting piece on the installation base, so as to limit the swing range of the headrest, and after overturning, the headrest limiting piece can support the limiting rod of the headrest drive part, so as to improve the stability of the overturned headrest.
[0025] An embodiment of the utility model provides a seat headrest, including seat headrest folding structure. Compared with prior art, the seat headrest has the advantages described above, which will not be repeated here. ACCURACY
[0026] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.
[0027] Figure 1 The structure diagram of the seat headrest folding structure provided by the utility model embodiment is shown in the figure.
[0028] Figure 2 The schematic diagram of the drive motor in the seat headrest folding structure provided by the utility model embodiment (not setting installation plate) is shown in the figure.
[0029] Figure 3 The schematic diagram of the drive motor in the seat headrest folding structure provided by the utility model embodiment (setting installation plate) is shown in the figure.
[0030] Figure 4 The schematic diagram of the installation base, headrest limiting, headrest drive part and headrest support seat in the seat headrest folding structure provided by the utility model embodiment (setting installation plate) is shown in the figure.
[0031] Figure 5The utility model provides a schematic diagram of installing base, headrest limiting, headrest driving part and headrest support seat in the headrest folding structure of seat (setting installation board) provided by the embodiment of the utility model.
[0032] Icon:
[0033] 100 - installing base, 110 - skeleton support, 120 - cross pipe support, 130 - auxiliary limiting baffle,
[0034] 200 - driving motor, 210 - speed reducer, 220 - outer spline, 230 - installation board,
[0035] 300 - headrest limiting piece, 310 - limiting baffle column,
[0036] 400 - headrest driving part, 410 - limiting rod, 420 - external bearing tube, 430 - inner spline, 440 - internal driving tube,
[0037] 500 - headrest support seat. DETAILED DESCRIPTION
[0038] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the protection scope of the utility model.
[0039] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, structure and operation, therefore, it cannot be understood as the limitation of the utility model.
[0040] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "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.
[0041] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements or the interaction of two elements.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.
[0042] The utility model will be further described in detail below by specific embodiments and in conjunction with the drawings.
[0043] Referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 And Figure 5 , the embodiment provides a seat headrest folding structure, including installation base 100, drive motor 200, headrest limiting piece 300, headrest drive piece 400 and headrest support base 500;Drive motor 200 is fixedly arranged on installation base 100, headrest drive piece 400 is rotatably arranged on installation base 100, drive motor 200 is transmissionally connected with headrest drive piece 400, and headrest support base 500 is arranged on headrest drive piece 400;Headrest limiting piece 300 is arranged on installation base 100, and the limiting rod 410 for adapting with headrest limiting piece 300 is arranged on headrest drive piece 400, so as to limit the swing range of headrest support base 500.
[0044] Specifically, when the seat headrest needs to be folded, drive motor 200 drives headrest drive piece 400 to work, so that headrest drive piece 400 drives headrest support base 500 to overturn, so that the seat headrest is completed overturning, in the overturning process, the limiting rod 410 on headrest drive piece 400 can abut against the headrest limiting piece 300 on installation base 100, so as to limit the swing range of headrest, and after overturning, the headrest limiting piece 300 can support the limiting rod 410 of headrest drive piece 400, so as to improve the stability of the headrest after overturning.
[0045] Referring to Figure 1 - Figure 5 In the optional scheme of the embodiment, the installation base 100 includes framework support 110 and cross pipe support 120;Cross pipe support 120 is fixedly arranged on framework support 110, and headrest drive piece 400 is rotatably arranged on cross pipe support 120.
[0046] Specifically, the framework support 110 is fixedly installed on the framework of the seat backrest.
[0047] Referring to Figure 1 -Figure 5 As shown in the optional solution of the embodiment, the headrest driving member 400 comprises an external bearing tube 420 and an internal spline 430; the external bearing tube 420 is rotatably mounted on the cross tube support 120, and the external bearing tube 420 is connected with the driving motor 200 through the internal spline 430; the headrest support seat 500 is arranged on the external bearing tube 420.
[0048] The headrest driving member 400 further comprises an internal driving tube 440, which is fixedly inserted into the external bearing tube 420, and the internal driving tube 440 is fixedly connected with the internal spline 430.
[0049] The cross tube support 120 and the external bearing tube 420 are provided with a bushing, and the external bearing tube 420 is expansion-tightly connected with the bushing.
[0050] The driving motor 200 is provided with a speed reducer 210, and the speed reducer 210 is provided with an external spline 220 which is adapted to the internal spline 430.
[0051] Specifically, the driving motor 200 drives the external spline 220 to rotate through the speed reducer 210, the external spline 220 drives the internal spline 430, and the external bearing tube 420 is driven to rotate through the internal spline 430, thereby completing the folding work of the headrest.
[0052] The internal spline 430 and the external spline 220 are arranged, which can reduce the gap between the driving motor 200 and the headrest, and improve the stability of the headrest.
[0053] Referring to Figure 1 - Figure 5 As shown in the optional solution of the embodiment, the headrest limiting member 300 comprises a plurality of limiting stop columns 310; the driving motor 200 is provided with a mounting plate 230, the mounting plate 230 is mounted on the cross tube support 120 through the plurality of limiting stop columns 310, and the internal spline 430 is located between the mounting plate 230 and the cross tube support 120; a limiting rod 410 is arranged on the internal spline 430, and the limiting rod 410 can abut against the limiting stop column 310.
[0054] Specifically, the mounting plate 230 is mounted on the cross tube support 120 through the plurality of limiting stop columns 310, the limiting stop column 310 not only serves as a mounting structure for mounting the driving motor 200, but also limits the limiting rod 410 on the internal spline 430, thereby limiting the folding angle range of the headrest; the limiting stop column and the limiting rod 410 welded on the spline head are combined together to realize the function of the stop point, which occupies less space and has low cost.
[0055] In addition, the driving motor 200 and the external bearing tube 420 are connected through the spline, the gap of the spline connection is good, and the strength is good.
[0056] Referring to Figure 1 Figure 5 As shown in the figure, in the optional solution of the embodiment, the auxiliary limiting baffle 130 is arranged on one side of the cross pipe support 120 close to the limiting stop column 310, and the auxiliary limiting baffle 130 can abut against the limiting rod 410.
[0057] Specifically, the auxiliary limiting baffle 130 is arranged on the cross pipe support 120, and the auxiliary limiting baffle 130 can abut against the limiting rod 410, so as to further adjust the swing range of the limiting rod 410.
[0058] The embodiment provides a seat headrest, which comprises a seat headrest folding structure.
[0059] Specifically, the seat headrest provided by the embodiment has the advantages of the above-mentioned seat headrest folding structure compared with the prior art, and details are not repeated 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 folding headrest structure for a seat, characterized in that, include: Mounting base (100), drive motor (200), headrest limiting component (300), headrest driving component (400) and headrest support (500); The drive motor (200) is fixedly mounted on the mounting base (100), the headrest drive component (400) is rotatably mounted on the mounting base (100), the drive motor (200) is connected to the headrest drive component (400) in a transmission connection, and the headrest support (500) is mounted on the headrest drive component (400). The headrest limiting member (300) is disposed on the mounting base (100), and the headrest driving member (400) is provided with a limiting rod (410) for adapting to the headrest limiting member (300) to limit the swing range of the headrest support (500).
2. The seat headrest folding structure according to claim 1, characterized in that, The mounting base (100) includes a frame support (110) and a horizontal tube support (120); The horizontal tube support (120) is fixedly mounted on the frame support (110), and the headrest drive (400) is rotatably mounted on the horizontal tube support (120).
3. The seat headrest folding structure according to claim 2, characterized in that, The headrest drive component (400) includes an external bearing tube (420) and an internal spline (430); The external support tube (420) is rotatably mounted on the horizontal tube support (120), and the external support tube (420) is connected to the drive motor (200) through an internal spline (430); The headrest support (500) is mounted on the external bearing tube (420).
4. The seat headrest folding structure according to claim 3, characterized in that, The headrest drive unit (400) also includes a built-in drive tube (440), which is fixedly inserted into the external support tube (420) and is fixedly connected to the internal spline (430).
5. The seat headrest folding structure according to claim 3, characterized in that, A bushing is provided between the horizontal tube support (120) and the external bearing tube (420).
6. The seat headrest folding structure according to claim 3, characterized in that, The headrest limiting member (300) includes a plurality of limiting stops (310); The drive motor (200) is provided with a mounting plate (230), and the mounting plate (230) is mounted on the horizontal tube support (120) by a plurality of the limiting stops (310). The internal spline (430) is located between the mounting plate (230) and the horizontal tube support (120). The limiting rod (410) is disposed on the internal spline (430), and the limiting rod (410) can abut against the limiting stop (310).
7. The seat headrest folding structure according to claim 6, characterized in that, An auxiliary limiting baffle (130) is provided on the side of the horizontal tube support (120) near the limiting stop (310), and the auxiliary limiting baffle (130) can abut against the limiting rod (410).
8. The seat headrest folding structure according to claim 3, characterized in that, The drive motor (200) is provided with a reducer (210), and the reducer (210) is provided with an external spline (220) that is adapted to the internal spline (430).
9. The seat headrest folding structure according to claim 5, characterized in that, The external bearing tube (420) is tightened and connected to the bushing.
10. A seat headrest, characterized in that, Includes the seat headrest folding structure as described in any one of claims 1-9.