CN215513359U - Automatic headrest folding structure - Google Patents

Abstract

The utility model discloses an automatic headrest turnover structure, which comprises a headrest framework, a lower bracket and a main shaft, wherein the headrest framework is rotatably arranged on the lower bracket through the main shaft, the automatic headrest turnover structure also comprises a turnover spring, the turnover spring is arranged on the main shaft and is abutted against the headrest framework and the lower bracket to provide a turning moment, the automatic headrest turnover structure also comprises a limiting structure, the limiting structure comprises a limiting sheet, a locking clip, a cam shaft and a transmission assembly, the limiting sheet is fixed on the main shaft, the locking clip is rotatably arranged on the lower bracket and is engaged and locked with the limiting sheet, the cam shaft is rotatably arranged on the lower bracket and can abut against the locking clip to enable the locking clip to rotate, the transmission assembly is connected with the cam shaft and a backrest framework assembly to enable the cam shaft to rotate when a backrest is unlocked, so that the locking clip and the limiting sheet are unlocked, the headrest is automatically turned over under the action of the turnover spring to realize linkage with the backrest unlocking, and the automatic headrest turnover structure is simple in overall structure.

Description

Automatic headrest folding structure

Technical Field

The utility model relates to an automobile seat, in particular to an automatic headrest folding structure.

Background

The early automobile rear seat headrest is mostly adjusted up and down. With diversification of the requirements of consumers on riding comfort and operation experience, the foldable headrest is widely applied to various types of automobiles at present due to high convenience and large space utilization rate.

At present, automobile rear seat headrests on the market are generally up-down adjustable, part of the headrests can be folded and stored complexly, and are not synchronous with backrest folding, so that the storage efficiency is influenced; some automobile back row seat headrest tools are portable in storage operation, but are complex in structure, large in number of parts and high in cost, and are difficult to popularize and use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the disadvantages of the prior art, it is an object of the present invention to provide an automatic headrest folding structure which is simple in structure and synchronized with backrest folding.

One of the purposes of the utility model is realized by adopting the following technical scheme:

a headrest automatic turnover structure comprises a headrest framework, a lower support and a main shaft, wherein the headrest framework is rotatably arranged on the lower support through the main shaft, the headrest automatic turnover structure further comprises a turnover spring, the turnover spring is arranged on the main shaft and is abutted against the headrest framework and the lower support to provide a turning moment, the headrest automatic turnover structure further comprises a limiting structure, the limiting structure comprises a limiting piece, a locking clamp, a camshaft and a transmission assembly, the limiting piece is fixed on the main shaft, the locking clamp is rotatably arranged on the lower support and is engaged and locked with the limiting piece, the camshaft is rotatably arranged on the lower support and can be abutted against the locking clamp to enable the locking clamp to rotate, the transmission assembly is connected with the camshaft and a backrest assembly to enable the camshaft to be driven to rotate when the backrest is unlocked, so as to drive the locking clamp to be unlocked with the limiting piece, the headrest framework is automatically turned over under the action of the turning spring.

Furthermore, the limiting structure further comprises a rotary spring, the rotary spring is mounted on the camshaft, and two ends of the rotary spring are respectively matched with the lower support and the transmission assembly.

Further, the transmission assembly comprises an unlocking sheet, the unlocking sheet is fixed on the camshaft, and the rotary spring is matched with the unlocking sheet.

Further, the transmission assembly further comprises a pull cable, one end of the pull cable is connected with the unlocking piece, and the other end of the pull cable is connected with the backrest assembly.

Further, the latch is riveted with the lower bracket.

Further, the camshaft is riveted with the lower bracket.

Compared with the prior art, when the automatic headrest folding structure is used, the cam shaft is driven to rotate when the backrest is unlocked, so that the lock clamp and the limiting piece are driven to be unlocked, the headrest framework is automatically folded under the action of the turnover spring, linkage with unlocking of the backrest framework is realized, and the automatic headrest folding structure is simple in overall structure.

Drawings

Fig. 1 is a perspective view of a headrest framework with an automatic headrest folding structure according to the utility model in a use state;

fig. 2 is a perspective view of the headrest framework of the automatic headrest folding structure of fig. 1 in a folded state;

fig. 3 is an internal structure view of the headrest automatic folding structure of fig. 2.

In the figure: 10. a headrest framework; 20. a lower bracket; 30. a main shaft; 40. turning over the spring; 50. a limiting structure; 51. a limiting sheet; 52. locking the card; 53. a camshaft; 54. a return spring; 55. unlocking the plate; 56. a pull rope.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 to 3 illustrate an automatic headrest folding structure according to the present invention, which includes a headrest frame 10, a lower bracket 20, a main shaft 30, a tilt spring 40, and a stopper structure 50.

The headrest frame 10 serves as a support for the headrest assembly, and the headrest frame 10 is rotatably mounted to the lower bracket 20 through the main shaft 30. The two ends of the main shaft 30 are fixed by bolts, and a bush is fitted into the shaft hole of the lower bracket 20, so that the headrest framework 10 and the lower bracket 20 can directly rotate relatively, and can be prevented from falling off along the axial direction.

The roll spring 40 is a spring, and the roll spring 40 is a headrest torque adjusting member. The turnover spring 40 is arranged on the main shaft 30, one end of the turnover spring 40 is clamped into the clamping groove of the lower support 20, and the other end of the turnover spring 40 is clamped into the headrest framework 10, so that the rotation moment is provided for the automatic turnover of the headrest.

The number of the limiting structures 50 is two, and the two limiting structures 50 are respectively arranged at two opposite ends of the main shaft 30, so that the stress of the main shaft 30 is stable. Each limiting structure 50 includes a limiting plate 51, a locking clip 52, a cam shaft 53, a rotary spring 54 and a transmission component. The end of the limiting sheet 51 is welded and fixed with the main shaft 30. One end of the limiting sheet 51 far away from the main shaft 30 is provided with a buckling groove formed by two bulges. The latch 52 is riveted to the lower bracket 20 and can rotate relative to the lower bracket 20. The locking clip 52 is provided with a bayonet projection. The cam shaft 53 is riveted to the lower bracket 20 and can rotate relative to the lower bracket 20. The drive assembly includes an unlocking tab 55 and a pull cable 56. The unlocking piece 55 is fixed to the camshaft 53. The revolving spring 54 is sleeved on the cam shaft 53 and has two ends respectively engaged with the lower bracket 20 and the unlocking piece 55. The rotary spring 54 is a torque adjusting part of the camshaft 53, and pulls the rotary spring 54 to rotate around the axis of the rotary spring, so that the torque of the camshaft 53 is adjusted. The pulling cable 56 is attached to the other end of the unlocking piece 55. The cable 56 is connected to the unlocking mechanism of the backrest.

When the automatic headrest turnover structure is used, the rotary spring 54 is in an early warning state, the cam shaft 53 props against the lock catch 52, and the limiting piece 51 is locked with the lock catch 52 under the action of rotary torque. The headrest is now in the design state, i.e. in use.

When carrying out car back row seat back and accomodate the operation, pulling back unblock stretching strap drives cable 56 simultaneously, and cable 56 drives unblock piece 55, unblock rotary spring 54's pretightning force for camshaft 53 upwards rotates, thereby unblock lock card 52 is to spacing effect of spacing piece 51, and under the turning moment effect of upset spring 40, headrest skeleton 10 can use main shaft 30 to turn over along the turning moment direction and turn over the book forward as the pivot, is in the extreme low position after turning over the book completely (as figure 2). When the lowest state is converted to the design state, the headrest framework 10 is manually turned over, so that the lock clip 52 and the limiting piece 51 are matched and locked, and the position of the design state can be recovered.

Through the design, the headrest framework 10 is turned over and is linked with the backrest framework in an unlocking mode, and the automatic headrest turning structure is simple in overall structure, few in part number and low in cost.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, variations and modifications can be made without departing from the spirit of the utility model, and all equivalent modifications and changes can be made to the above embodiments according to the essential technology of the utility model, which falls into the protection scope of the utility model.

Claims (6)

1. The utility model provides an automatic structure of rolling over of headrest, includes headrest skeleton, lower carriage and main shaft, the headrest skeleton passes through the main shaft rotate install in the lower carriage, its characterized in that: the automatic turnover structure of headrest still includes the upset spring, the upset spring mounting in the main shaft and with the headrest skeleton and the lower carriage is contradicted in order to provide turning moment, the automatic turnover structure of headrest still includes limit structure, limit structure includes spacing piece, lock card, camshaft and drive assembly, spacing piece is fixed in the main shaft, the lock card rotate install in the lower carriage and with spacing piece meshing locking, the camshaft rotate install in the lower carriage can be contradicted the lock card makes the lock card rotates, drive assembly with camshaft and back subassembly are connected, drive when making the back unblock the camshaft rotates, thereby drive the lock card with spacing piece unblock, the headrest skeleton is in the automatic turnover is rolled over under the effect of upset spring.

2. The automatic headrest folding structure according to claim 1, wherein: the limiting structure further comprises a rotary spring, the rotary spring is mounted on the camshaft, and two ends of the rotary spring are respectively matched with the lower support and the transmission assembly.

3. The automatic headrest folding structure according to claim 2, wherein: the transmission assembly comprises an unlocking sheet, the unlocking sheet is fixed on the camshaft, and the rotary spring is matched with the unlocking sheet.

4. The automatic headrest folding structure according to claim 3, wherein: the transmission assembly further comprises a stay cable, one end of the stay cable is connected with the unlocking sheet, and the other end of the stay cable is connected with the backrest assembly.

5. The automatic headrest folding structure according to claim 1, wherein: the lock clip is riveted with the lower bracket.

6. The automatic headrest folding structure according to claim 1, wherein: the camshaft is riveted with the lower bracket.

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