CN222973256U - Floating adjusting structure and electric headrest - Google Patents

Abstract

The application discloses a floating adjusting structure and an electric headrest, wherein the floating adjusting structure comprises a fixed frame, a frame and a floating assembly, the fixed frame is fixedly arranged, the frame is connected with the fixed frame in a matched mode through the floating assembly, the frame is suitable for swinging, the floating assembly is suitable for providing a movable space for swinging of the frame, and the electric headrest comprises the floating adjusting structure. The application has the beneficial effects that the floating assembly is arranged, when the headrest is lifted in a curve manner, the frame can swing along the fixing frame so as to be matched with the curve track of the headrest body, thus the arc shapes of the headrest body and the backrest of the seat can be better adapted after the adjustment, the application is more in line with the ergonomics, and the comfort of riding is improved.

Description

Floating adjusting structure and electric headrest

Technical Field

The application relates to the technical field of automobile accessories, in particular to a floating adjusting structure and an electric headrest.

Background

The automobile headrest is a driving comfort configuration article and a safety protection article. When the vehicle is in rear-end collision, the human body can fall backwards due to inertia, at the moment, the acceleration or deceleration pressure of the vehicle is concentrated on the fragile neck and head of the human body, and the headrest plays a role in buffering the fragile neck and head of the human body, so that the head of the human body is protected.

Because the height and the sitting posture of each person are different, the height requirements on the automobile headrest are different, so that more and more electric liftable headrests on the market are generated, the existing headrests are in a vertical lifting and vertical lifting adjusting mode, and the radian of the headrests and the back of the seat cannot be well adapted after adjustment, so that discomfort is caused during use. Therefore, a floating adjusting structure and an electric headrest are provided for solving the technical problems.

Disclosure of utility model

One of the objects of the present application is to provide a floating adjustment structure.

It is another object of the present application to provide an electric headrest.

In order to achieve at least one of the purposes, the floating adjusting structure comprises a fixing frame, a frame and a floating assembly, wherein the fixing frame is fixedly arranged, the frame is connected with the fixing frame in a matched mode through the floating assembly, the frame is suitable for swinging, and the floating assembly is suitable for providing a movable space for swinging of the frame.

Preferably, the floating assembly comprises an elastic piece, the frame is connected with the fixing frame through the elastic piece, and the elastic piece is suitable for being elastically deformed when the frame swings so that the frame swings along the fixing frame.

Preferably, the floating assembly comprises a floating block and a floating groove, wherein the floating block is arranged on the frame, the floating groove is arranged on the fixing frame, the floating block is in clamping fit with the floating groove, and a movable gap is reserved between the floating block and the floating groove, so that the frame swings along the fixing frame.

Preferably, the floating assembly comprises an elastic piece, a floating block and a floating groove, wherein the floating block is connected with the frame through the elastic piece, the floating groove is arranged on the fixed frame, the floating block is in clamping fit with the floating groove, a movable gap is reserved between the floating block and the floating groove, and the frame is suitable for swinging along the fixed frame under the matching actions of deformation of the elastic piece and the movable gap.

Preferably, the top end of the fixing frame is provided with a mounting groove communicated with the floating groove, the floating block is suitable for being matched with the mounting groove when the frame is mounted, then the floating block is suitable for moving along the mounting groove until being clamped and matched with the floating groove, and the floating block is locked on the fixing frame through the limiting assembly.

Preferably, the limiting assembly comprises a limiting block and a limiting groove, wherein the limiting block is arranged on the floating block, the limiting groove is arranged on the fixing frame, or the limiting block is arranged on the fixing frame, the limiting groove is arranged on the floating block, and the limiting block is matched with the limiting groove to realize locking limiting of the floating block.

Preferably, the slider is in clamping fit with the frame, a clamping gap is reserved between the slider and the frame, and the elastic piece is arranged in the clamping gap and is in abutting fit with the slider and the frame.

Preferably, the bottom end of the floating block is provided with a fixture block with an I-shaped structure, the top end of the frame is provided with a clamping groove, the upper ends of the inner walls of the two sides of the clamping groove extend inwards to form a protruding portion, so that the clamping groove is of a T-shaped structure, the two sides of the elastic piece are recessed inwards to form a recessed portion, the middle of the elastic piece is provided with a slot, the protruding portion is in plug-in fit with the recessed portion, the vertical section of the fixture block is in plug-in fit with the slot and the clamping groove, and the elastic piece is in butt-fit with the outer parts of the two sides of the fixture block.

An electric headrest comprising the above-described floating adjustment structure.

Compared with the prior art, the application has the beneficial effects that:

The utility model has the advantages that the floating assembly is arranged, when the headrest is lifted in a curve manner, the frame can swing along the fixing frame and is further matched with the curve track of the headrest body, so that the arc shapes of the headrest body and the backrest of the seat can be better adapted after the adjustment, the utility model is more in accordance with the human engineering, and the comfort of riding is improved.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic side view of the present utility model.

Fig. 3 is a schematic view showing a state when the headrest is raised and lowered in a curved manner.

Fig. 4 is a schematic view of a driving mechanism according to the present utility model.

Fig. 5 is a schematic diagram of the swing range of the driving mechanism of the present utility model.

Fig. 6 is a schematic view of the partial structure of fig. 5 according to the present utility model.

Fig. 7 is a schematic diagram showing the cooperation installation of the fixing frame and the driving mechanism.

Fig. 8 is a schematic view of the fixing frame and the driving mechanism of the present utility model when separated.

FIG. 9 is a schematic illustration of a floating assembly embodying the present utility model.

FIG. 10 is a schematic illustration of a slider, spring, and clip groove according to the present utility model.

Fig. 11 is a schematic view of a limiting assembly and a mounting groove structure according to the present utility model.

Fig. 12 is a schematic view of the moving mechanism of the present utility model when assembled with the fixed frame.

In the figure, 1, a headrest body; 2, a driving mechanism, 201, a driving device, 202, a screw rod, 203, a driving plate, 204, a frame, 3, soundproof cotton, 4, a fixing frame, 5, a curved rod, 6, a sleeve, 7, a floating assembly, 701, an elastic piece, 702, a floating block, 703, a floating groove, 8, a mounting groove, 9, a limiting assembly, 901, a limiting block, 902, a limiting groove, 10, a clamping groove, 11, a concave part, 12, a slot, 13, a convex part, 14, a movable gap, 15 and a clamping gap.

Detailed Description

The present application will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

In the prior art, the electric headrest on the backrest of the automobile is adjusted in a vertical lifting mode, and for a car, the inside of the electric headrest is generally provided with front and rear rows of seats, and the backrest of the seats is higher, so that the electric headrest can be adjusted in a vertical lifting mode. However, for some seven-seat or nine-seat vehicles, a third row of seats is provided, and in order to make the rear side of the vehicle have a larger usage space, the third row of seats are generally foldable, and of course, the seats in the third row are also shorter, and the travel of the headrest during adjustment is longer, so that the problem is caused that the radian of the headrest and the back of the seat after adjustment cannot be well adapted, i.e. does not conform to the ergonomics, and further gives uncomfortable feeling to passengers.

Therefore, in the improvement of the prior art, the fixing frame 4 is fixedly installed in the seat back, and the headrest body 1 is slidably installed on the side of the fixing frame 4 in a curved manner, the driving mechanism 2 mainly comprises a frame 204, a driving device 201 (motor), a screw rod 202 and a driving plate 203, wherein the motor screw rod 202 for driving the headrest body 1 to lift and fall is mainly installed on the frame 204, and the frame 204 cannot be fixedly installed because the headrest body 1 moves in the vertical direction and also has a partial displacement in the horizontal direction due to the curved upward movement adjustment of the headrest body 1, otherwise, the curved upward movement of the headrest body 1 is interfered.

The inventors of the present application have therefore developed a floating adjustment structure, one embodiment of which is shown in fig. 1 to 12, comprising a fixed frame 4, a frame 204 and a floating assembly 7, the fixed frame 4 being fixedly arranged (in the seat back), the frame 204 being in mating connection with the fixed frame 4 via the floating assembly 7.

It can be understood that when the headrest is raised and lowered in a curved manner, the frame 204 can swing along the fixing frame 4 (i.e., the floating assembly 7 can provide a movable space for the swing of the frame 204), so as to adapt to the curved track of the headrest body 1, thus the arc shape of the headrest body 1 and the backrest can be better adapted after adjustment, the ergonomics can be better met, and the comfort during riding can be improved.

Here, the frame 204 is mounted at the bottom end of the fixing frame 4 by using the floating assembly 7, that is, the driving mechanism 2 is mounted at the bottom end of the fixing frame 4 by using the floating assembly 7, and the output end is connected with the headrest body 1.

Therefore, when the height of the headrest body 1 is adjusted, as shown in fig. 3 (a), the driving mechanism 2 is started in the initial state, which is the lowest state of the headrest body 1, and the driving mechanism 2 can drive the headrest body 1 to perform curve upward adjustment along the fixing frame 4, as shown in fig. 3 (b), so that the headrest body can be better attached to the head of a passenger, and the comfort is greatly improved.

That is, while the driving mechanism 2 drives the headrest body 1 to move upwards, the frame 204 of the driving mechanism 2 can move (swing) along the fixing frame 4 under the action of the floating assembly 7, so that the frame 204 is adapted to the curved track of the headrest body 1.

It should be noted that, it is known that there should be a certain inclination angle between the backrest and the seat cushion of the automobile, that is, the backrest and the seat cushion will not be in a vertical state, so that the comfort of the backrest of the human body can be met. If the headrest body 1 is adjusted, the headrest body 1 is adjusted in a tilting manner along the tilting backrest in a linear lifting manner, so that the headrest body 1 is adjusted to be higher, the direction of the backrest can be away from, and the head of a passenger can be matched with the headrest body 1 only by tilting backwards a lot, thereby bringing uncomfortable feeling. Therefore, when the headrest body 1 is lifted, the headrest body needs to move forward relative to the backrest to approach, so that people with different heights can be matched for comfort. It should be noted that the headrest body 1 will not deviate too much from the original position during the upward movement, and thus the deviation swing angle θ of the driving mechanism 2 should not be too large, for example, θ may be between 5 ° and 15 °.

In one embodiment of the present application, as shown in fig. 6-11, the floating assembly 7 has a variety of structural forms, including, but not limited to, the following three:

First, as shown in fig. 6, the floating assembly 7 includes an elastic member 701, and the driving mechanism 2 (frame 204) is mounted to the fixing frame 4 through the elastic member 701.

It can be understood that, for example, the elastic member 701 may be made of rubber or silica gel, and the elastic member 701 may deform when being pressed, so that when the headrest body 1 performs the curved lifting adjustment, the elastic member 701 may elastically deform to enable the driving mechanism 2 (the frame 204) to move (swing) along the fixing frame 4.

As shown in fig. 7 and 8, the slider 7 includes a slider 702 and a slider groove 703, the slider 702 is mounted on the driving mechanism 2 (the frame 204), the slider groove 703 is provided on the mount 4, the slider 702 and the slider groove 703 are engaged with each other with a clearance 14 left therebetween.

It will be appreciated that relative movement between slider 702 and floating groove 703 is possible due to the presence of clearance gap 14. Further, when the head rest body 1 is adjusted in a curved manner, the driving mechanism 2 (the frame 204) can be moved (swung) along the fixing frame 4 by the engagement of both the slider 702 and the floating groove 703.

The third structure is that the floating assembly 7 comprises an elastic piece 701, a floating block 702 and a floating groove 703, wherein the floating block 702 is connected with the driving mechanism 2 (the frame 204) through the elastic piece 701, the floating groove 703 is arranged on the fixed frame 4, the floating block 702 and the floating groove 703 are in clamping fit, and a movable gap 14 is reserved between the floating block 702 and the floating groove 703.

It can be understood that due to the existence of the movable gap 14 and the arrangement of the elastic member 701, when the headrest body 1 performs the curved lifting adjustment, the cooperation of the slider 702 and the floating groove 703 and the deformation of the elastic member 701 can enable the driving mechanism 2 (the frame 204) to move (swing) along the fixed frame 4.

It should be noted that all three structures can meet the actual requirements, and those skilled in the art can select according to the actual conditions. It should be noted that, for the first construction, the amplitude with which the drive mechanism 2 (frame 204) can oscillate depends on the degree of deformation of the elastic member 701. For structure two, the amplitude by which drive mechanism 2 (frame 204) can oscillate is dependent on the clearance 14 between slider 702 and floating groove 703. For the third structure, the two structures are combined with each other, that is, the swing amplitude of the driving mechanism 2 (the frame 204) depends on the deformation degree of the elastic member 701 and the size of the movable gap 14, so that the deformation degree of the elastic member 701 and the movable gap 14 can compensate each other when the specific arrangement is performed, thereby enabling the stability of the driving mechanism 2 (the frame 204) to be better, and improving the service life of the whole mechanism.

For example, assuming that the swing amplitude of the driving mechanism 2 (the frame 204) is θ, the deformation degree of the elastic member 701 corresponding to the first structure is S, the range of the movable gap 14 corresponding to the second structure is C, and for the third structure, the deformation degree of the elastic member 701 may be set to be one half S, and the range of the movable gap 14 is one half C, that is, the two components are overlapped with each other to achieve the overall swing amplitude θ of the driving mechanism 2 (the frame 204). The degree of deformation of the elastic member 701 and the extent of the movable gap 14 in the third structure can be set smaller than those in the first and second structures alone, which can lead to a longer service life and an improvement in performance stability and reliability. For example, under the condition of road condition jolting, the three phases of the structure can keep a stable working state more than other structures, and the possibility of faults and damage is reduced.

As a further description of the three embodiments of the present application, in one of the embodiments of the present application, as shown in FIGS. 7 and 8, slider 702 is mounted in cooperation with a floating groove 703 on mount 4. A mounting groove 8 communicating with the floating groove 703 is provided at the top end of the fixing frame 4.

It will be appreciated that the upper end of slider 702 is in a "T" configuration, and when the drive mechanism 2 (frame 204) is mounted, slider 702 is first engaged with mounting slot 8 such that the horizontal portion of the top end of slider 702 extends out of mounting slot 8, and slider 702 is then moved along mounting slot 8 such that slider 702 is moved into snap-fit engagement with floating slot 703. In this case, although the engagement between the slider 702 and the floating groove 703 is facilitated by the swing action of the driving mechanism 2 (the frame 204), the slider 702 and the floating groove are easily displaced from each other because the slider and the frame 204 are engaged with each other by the engagement between the slider and the frame.

Therefore, in order to solve the above technical problem, as shown in fig. 7, a limiting assembly 9 may be provided between the slider 702 and the mount 4. It should be noted that when the slider 702 moves and cooperates with the floating groove 703, the slider 702 can be locked to the fixed frame 4 by the limiting component 9, so as to achieve stable cooperation between the driving mechanism 2 (the frame 204) and the fixed frame 4, and ensure stability and smooth operation of the whole device.

As shown in fig. 11, the limiting component 9 includes a limiting block 901 and a limiting groove 902, and of course, there are various mounting manners of the limiting block 901 and the limiting groove 902, including but not limited to the following two types:

In the first mode, a limiting block 901 is installed on a floating block 702, and a limiting groove 902 is formed in a fixed frame 4. In the second mode, the limiting block 901 is installed on the fixing frame 4, and the limiting groove 902 is arranged on the floating block 702.

It will be appreciated that the manner of engagement of both stop 901 and stop slot 902 is synchronized with the engagement of both slider 702 and floating slot 703. That is, in the initial state of the mounting, as shown in fig. 12 (c), the stopper 901 and the stopper groove 902 are in a state of being offset from each other. When the slider 702 enters the floating groove 703 from the mounting groove 8, the stopper 901 is also moved toward the stopper groove 902 by the slider 702. When the slider 702 is engaged with the floating groove 703, the stopper 901 is also moved and caught in the stopper groove 902 to effect mounting locking of the slider 702, as shown in fig. 12 (d).

It should be noted that, as shown in fig. 10, the slider 702 may be integrally formed with the stopper 901, and the slider 702 is made of a plastic material, so that when the stopper 901 is not matched with the stopper 902, the stopper 901 is in an extrusion deformation state under the action of the fixing frame 4, and when the stopper 901 corresponds to the stopper 902, the stopper 901 loses extrusion action and returns to deform, so that the stopper 901 and the stopper 902 are in a limiting engagement.

Of course, the top end of the slider 702 and the fixing frame 4 are engaged with each other by a clamping fit, which is convenient for mounting and dismounting, and improves the dismounting efficiency. Therefore, according to the above embodiment, the bottom end of the slider 702, the driving mechanism 2 (the frame 204) and the elastic member 701 can be mounted in a similar manner, so as to facilitate subsequent disassembly and assembly.

Specifically, as shown in fig. 6 and 10, the slider 702 is in a snap fit with the driving mechanism 2 (the frame 204), and a snap gap 15 is formed between the slider 702 and the driving mechanism 2 (the frame 204), the elastic member 701 is disposed in the snap gap 15, and the elastic member 701 is in a butt fit with the slider 702 and the driving mechanism 2 (the frame 204), so that the bottom end of the slider 702 is mounted between the elastic member 701 and the driving mechanism 2 (the frame 204).

It should be noted that the slider 702 is now mounted to the drive mechanism 2 (the frame 204) primarily by means of a snap fit, rather than a load bearing connection to the frame 204 entirely through the spring 701. Because the elastic member 701 is made of a flexible material, if the frame 204 is connected by the elastic member 701, the elastic member 701 is easily damaged due to irreversible deformation under the action force of the driving mechanism 2, and the service life is short. In this embodiment, the elastic member 701 mainly plays a role of filling connection, so that on the premise of ensuring that the rack 204 can be movably connected, the stability of connection and subsequent disassembly of the rack 204 can be ensured, thereby prolonging the service life and reliability of the whole device.

As a further description of the above embodiment, the cooperation between the slider 702 and the frame 204 is that the bottom end of the slider 702 is integrally formed with a fixture block having an I-shaped structure, the top end of the driving mechanism 2 (the frame 204) is provided with a clamping groove 10, and the upper ends of the inner walls on both sides of the clamping groove 10 extend inwards to form a protruding portion 13, so that the clamping groove 10 has a T-shaped structure. The two sides of the elastic member 701 are recessed inwards to form a recess 11, and the middle part of the elastic member 701 is provided with a slot 12, as shown in fig. 10, which is a shape structure of the elastic member 701, for example, the elastic member 701 is integrally formed by rubber or silica gel.

It will be appreciated that when the slider 702, the elastic member 701 and the driving mechanism 2 (the frame 204) are engaged, the elastic member 701 may be inserted into the card slot 10, that is, the protrusion 13 and the recess 11 are engaged in a plugging manner, and then the vertical section of the clamping block is inserted into the slot 12, and the clamping block is also inserted into the card slot 10 at the same time, so as to achieve the plugging engagement between the three.

Therefore, as shown in fig. 6, the slider 702, the elastic member 701 and the clamping groove 10 are tightly clamped and limited, and under the action of the elastic member 701, the slider 702 and the driving mechanism 2 (the frame 204) are in flexible contact, so that abrasion between the slider 702 and the driving mechanism 2 (the frame 204) is greatly reduced, and the elastic member 701 also has a certain damping and buffering effect, namely, when the automobile is jolt, the elastic member 701 can absorb impact energy through elastic deformation, thereby ensuring stable connection and simultaneously having vibration and noise reduction effects.

Of course, in order to further improve the noise reduction effect, as shown in fig. 1 and fig. 4, sound insulation pieces (such as the sound insulation cotton 3) may be installed on two sides of the driving mechanism 2 (the frame 204), and the design of these sound insulation pieces not only can effectively reduce the noise generated by the driving mechanism 2 during operation, but also can improve the stability of the whole device to a certain extent. Because the driving mechanism 2 is arranged in the backrest, the hard friction between the driving mechanism 2 and the backrest can be reduced through the arrangement of the sound insulation piece, and the backrest is further protected, so that the service life is prolonged.

In the embodiment of the application, as shown in fig. 1 and 3, the headrest body 1 and the fixed frame 4 are matched in such a way that a curved rod 5 is arranged at the bottom end of the headrest body 1, the bottom end of the curved rod 5 is connected with the output end of the driving mechanism 2, a sleeve 6 is fixedly arranged at the side part of the fixed frame 4, and the curved rod 5 is in sliding fit with the sleeve 6 to realize the curved sliding installation of the headrest body 1.

It will be appreciated that during the lifting of the curved bar 5 by the drive mechanism 2, the curved bar 5 may be moved upwards in a curved manner under the guiding action of the sleeve 6. Of course, in order to improve the stability to the headrest body 1, the curved rod 5 may be a pair and be in supporting connection with the headrest body 1, or the curved rod 5 may be in an integrated structure in the shape of 冂, so that the entire structure of the headrest body 1 is more stable.

As shown in fig. 4, the present application is not limited to the structure of the driving mechanism 2, and the specific structure is provided for reference, and the driving mechanism 2 includes a frame 204, a driving device 201, a screw rod 202 and a driving plate 203, wherein the frame 204 is installed at the bottom end of the fixed frame 4 through a floating assembly 7, the screw rod 202 is vertically rotatably installed in the frame 204, the driving plate 203 is vertically slidably installed on the frame 204 and cooperates with the screw rod 202, the driving plate 203 is detachably installed (for example, bolt installation or snap-fit installation of a snap spring) at the bottom end of the curved rod 5, and the driving device 201 is installed on the frame 204 and is connected with the screw rod 202 through an output end. Of course, the driving device 201 is of common knowledge to those skilled in the art, and may be a motor, a rotary cylinder, a rotary hydraulic cylinder, or the like, and preferably a motor is used herein.

It can be understood that when the height of the headrest body 1 is adjusted, the motor is started to rotate forward, the motor drives the screw rod 202 to rotate, the screw rod 202 acts on the driving plate 203, and the driving plate 203 can drive the headrest body 1 to adjust in a lifting manner through the curved rod 5. In the same way, when the motor is reversed, the headrest body 1 can be adjusted in a descending manner.

Of course, in the driving mechanism 2, a hydraulic cylinder and a pneumatic cylinder may be used to drive the headrest body 1 to perform lifting adjustment. If the hydraulic cylinder is adopted, a matched hydraulic system is needed, the hydraulic system has high cost and high maintenance cost for a single action, and if the hydraulic cylinder is adopted, the transmission exhaust noise is large, and the sealing requirement is higher. The motor screw 202 is matched in the way that the motor is self-locking, namely, when the motor stops running, the headrest body 1 can stably keep the adjusted position, meanwhile, the motor screw 202 is simple to maintain and low in noise, can work normally in high/low temperature and corrosion/explosion-proof severe environments, and is further preferably adopted.

In one embodiment of the present application, as shown in fig. 7 to 9, in order to further improve the stability and firmness of the cooperation between the driving mechanism 2 and the fixing frame 4, a pair of mounting structures related to the slider 702, the floating groove 703, the elastic member 701, the clamping groove 10 and the like are preferably adopted, and the mounting structures are arranged in a bilateral symmetry manner, so that the two sides of the top end of the driving mechanism 2 are matched with the fixing frame 4, thereby greatly improving the stability.

In this case, as shown in fig. 8, one mounting groove 8 may be provided, and it is known that the mounting grooves 8 are provided to enable the slider 702 to be mounted to the floating groove 703, and in the case where a pair of floating grooves 703 are provided, only one mounting groove 8 is required to enable the slider 702 to be mounted to the floating groove 703. Specifically, as shown in fig. 8, the left-side mounting groove 8 communicates with the floating groove 703, and the right-side floating groove 703 is located at the right end of the mount 4 and is in communication with the outside.

Another aspect of the present application provides an electric headrest, specifically including the above-described floating adjustment structure.

The working principle of the utility model is as follows:

Firstly, a fixing frame 4 is fixedly arranged in a backrest, a driving mechanism 2 is also positioned in the backrest, a curved rod 5 extends out of the top end of the backrest, when the height of a headrest body 1 needs to be adjusted, a motor is started to rotate, the motor drives a screw rod 202 to rotate, the screw rod 202 acts on a driving plate 203, and the driving plate 203 can drive the headrest body 1 to perform curved lifting adjustment through the curved rod 5. At the same time, the frame 204 of the driving mechanism 2 swings with the entire driving mechanism 2 under the action of the floating groove 703, the floating block 702 and the elastic member 701, so as to match the curved lifting track of the headrest body 1.

When the headrest body 1 is folded, that is, when the headrest body 1 is adjusted to be contracted downward, the headrest body 1 moves downward in the direction of the backrest, and after moving downward to the lowest position, the headrest body 1 is tightly attached to the backrest, so that the headrest body 1 is not compressed by extrusion. Of course, the top end of the backrest can be provided with a groove body, after the headrest body 1 moves downwards to the lowest, the headrest body 1 can move downwards in a curve mode and enter the groove body to be hidden, at the moment, the headrest body 1 can be protected when the seat (backrest) is folded, the protection performance of the headrest body 1 is greatly improved, and the service life is further prolonged.

The foregoing has outlined the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.

Claims (9)

1. A floating adjusting structure is characterized by comprising a fixing frame, a frame and a floating assembly, wherein the fixing frame is fixedly arranged, the frame is connected with the fixing frame in a matched mode through the floating assembly, the frame is suitable for swinging, and the floating assembly is suitable for providing a movable space for swinging of the frame.

2. The floating adjustment structure of claim 1, wherein the floating assembly comprises an elastic member, the frame is connected to the mount via the elastic member, and the elastic member is adapted to elastically deform to cause the frame to swing along the mount when the frame swings.

3. The floating adjustment structure of claim 1, wherein the floating assembly comprises a floating block and a floating groove, the floating block is mounted on the frame, the floating groove is arranged on the fixed frame, the floating block is in clamping fit with the floating groove, and a movable gap is reserved between the floating block and the floating groove, so that the frame swings along the fixed frame.

4. The floating adjustment structure of claim 1, wherein the floating assembly comprises an elastic member, a floating block and a floating groove, the floating block is connected with the frame through the elastic member, the floating groove is arranged on the fixing frame, the floating block is in clamping fit with the floating groove, a movable gap is reserved between the floating block and the floating groove, and the frame is suitable for swinging along the fixing frame under the matching action of deformation of the elastic member and the movable gap.

5. The floating adjustment structure of claim 3 or 4, wherein a mounting groove is provided at a top end of the mounting bracket and is in communication with the floating groove, wherein the slider is adapted to engage the mounting groove during mounting of the frame, and wherein the slider is then adapted to move along the mounting groove until a snap fit engagement with the floating groove is achieved, and wherein the slider is then locked to the mounting bracket by the stop assembly.

6. The floating adjustment structure of claim 5, wherein the limiting assembly comprises a limiting block and a limiting groove, the limiting block is mounted on the floating block, the limiting groove is arranged on the fixing frame, or the limiting block is mounted on the fixing frame, the limiting groove is arranged on the floating block, and the limiting block is matched with the limiting groove to achieve locking limiting of the floating block.

7. The floating adjustment structure of claim 4, wherein the slider is engaged with the frame with a gap therebetween, and the elastic member is disposed in the gap and engages against the slider and the frame.

8. The floating adjustment structure of claim 7, wherein a fixture block of an I-shaped structure is arranged at the bottom end of the floating block, a clamping groove is arranged at the top end of the frame, protruding portions are formed by inwards extending the upper ends of the inner walls of the two sides of the clamping groove, the clamping groove is of a T-shaped structure, the two sides of the elastic piece are inwards sunken to form recessed portions, a slot is formed in the middle of the elastic piece, the protruding portions are in plug-in fit with the recessed portions, the vertical sections of the fixture block are in plug-in fit with the slot and the clamping groove, and the elastic piece is in butt-fit with the outer parts of the two sides of the fixture block.

9. An electric headrest comprising a floating adjustment structure according to any one of claims 1-8.