CN118651141A - Electric adjustable headrest - Google Patents

Abstract

The application discloses an electric adjusting headrest, which comprises a fixed frame, a headrest body and a driving mechanism, wherein the headrest body is arranged on the side part of the fixed frame in a curve sliding way; the driving mechanism is suitable for driving the headrest body to perform curve lifting adjustment along the fixing frame, and at the moment, the driving mechanism is suitable for moving along the fixing frame under the action of the floating assembly so as to be matched with the curve track of the headrest body. The application has the beneficial effects that: through with headrest body curved slidable mounting at the mount, and then under actuating mechanism's effect, can make the headrest body carry out curved lift adjustment, can make the headrest body adapt to with the arc that seat was back can be better after adjusting like this, more accords with human engineering, improves the comfort of taking, solves the easy dead problem of headrest lift under the long stroke radian orbit simultaneously.

Description

Electric adjustable headrest

Technical Field

The present application relates to the technical field of automobile accessories, and in particular to an electrically adjustable headrest.

Background Art

The car headrest is a driving comfort configuration and safety protection product. When a vehicle rear-ends, the human body will fall backwards due to inertia. At this time, the pressure of the vehicle acceleration or deceleration is concentrated on the fragile neck and head of the human body, and the headrest plays a buffering role to protect the human head.

Since everyone has different heights and sitting postures, the height requirements for car headrests are also different. Therefore, more and more electrically adjustable headrests have emerged on the market. Existing headrests are adjusted in a straight up and down manner, and the headrests and the arc of the seat back cannot be well adapted after adjustment, which causes discomfort during use. Therefore, the technical trend of using arc-shaped lifting is becoming more and more obvious, but it also brings the risk of easy lifting and jamming. Therefore, an electrically adjustable headrest is proposed to solve the above technical problems.

Summary of the invention

One of the purposes of the present application is to provide an electrically adjustable headrest.

To achieve the above objectives, the technical solution adopted in the present application is: an electrically adjustable headrest, comprising a fixing frame, a headrest body and a driving mechanism, wherein the headrest body is slidably mounted on the side of the fixing frame in a curved manner, the driving mechanism is mounted on the bottom end of the fixing frame through a floating component and the output end is connected to the headrest body; the driving mechanism is suitable for driving the headrest body to perform curved lifting and lowering adjustment along the fixing frame, and at this time, the driving mechanism is suitable for moving along the fixing frame under the action of the floating component and thus adapting to the curved trajectory of the headrest body; the floating component comprises an elastic member, and the driving mechanism is mounted on the fixing frame through the elastic member; when adjusting the headrest body, the elastic member is suitable for elastic deformation so that the driving mechanism moves along the fixing frame; and/or the floating component comprises a floating block and a floating groove, the floating block is mounted on the driving mechanism, and the floating groove is arranged on the fixing frame; the floating block is snap-fitted with the floating groove and a movable gap is left between the two, so that the driving mechanism moves along the fixing frame.

Preferably, a mounting groove connected to the floating groove is provided at the top of the fixed frame; when installing the driving mechanism, the floating block is suitable for first cooperating with the mounting groove, and then the floating block is suitable for moving along the mounting groove until it is snap-fitted with the floating groove, and at this time the floating block is locked to the fixed frame by a limit assembly.

Preferably, the limit block includes a limit block and a limit slot, the limit block is installed on the floating block, and the limit slot is arranged on the fixed frame; or the limit block is installed on the fixed frame, and the limit slot is arranged on the floating block; the limit block cooperates with the limit slot to realize the locking and limiting of the floating block.

Preferably, the floating block and the driving mechanism are snap-fitted with each other and a snap-fit gap is left therebetween, and the elastic member is arranged in the snap-fit gap and abuts against the floating block and the driving mechanism.

Preferably, a card block with an "I"-shaped structure is provided at the bottom end of the floating block, a card slot is provided at the top of the driving mechanism, and the upper ends of the inner walls on both sides of the card slot extend inwardly to form a protrusion, thereby making the card slot have a "T"-shaped structure; the two sides of the elastic member are recessed inwardly to form a recessed portion and a slot is provided in the middle of the elastic member; the protrusion is plug-fitted with the recessed portion, the vertical section of the card block is plug-fitted with the slot and the card slot, and the elastic member is abutted against the outer sides of the card block.

Preferably, a curved rod is installed at the bottom end of the headrest body, the bottom end of the curved rod is connected to the output end of the driving mechanism, a sleeve is installed on the side of the fixing frame, and the curved rod and the sleeve are slidably matched to realize the curved sliding installation of the headrest body.

Preferably, the driving mechanism includes a frame, a driving device, a screw rod and a driving plate, the frame is installed on the bottom end of the fixed frame through the floating assembly, the screw rod is vertically rotatably installed on the frame, the driving plate is vertically slidably installed on the frame and cooperates with the screw rod, and the driving plate and the bottom end of the curved rod are detachable, the driving device is installed on the frame and connected to the screw rod through the output end, and then the screw rod drives the driving plate to move up and down under the drive of the driving device.

Compared with the prior art, the beneficial effects of this application are:

The present invention installs the headrest body on the fixing frame in a curved sliding manner, and then under the action of the driving mechanism, the headrest body can be adjusted to rise and fall in a curved manner. In this way, after the adjustment, the headrest body can better adapt to the arc shape of the seat back, which is more ergonomic and improves the comfort of riding. At the same time, the driving mechanism can move along the fixing frame under the action of the floating component, so that the driving mechanism is adapted to the curved trajectory of the headrest body, thereby solving the problem that the headrest is easily stuck when being raised and lowered under a long-stroke arc trajectory.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic side view of the structure of the present invention.

FIG. 3 is a schematic diagram of the headrest of the present invention when the headrest is raised or lowered in a curved manner.

FIG. 4 is a schematic diagram of a driving mechanism of the present invention.

FIG. 5 is a schematic diagram of the swing range of the driving mechanism of the present invention.

FIG. 6 is a schematic diagram of the partial structure of FIG. 5 of the present invention.

FIG. 7 is a schematic diagram of the coordinated installation of the fixing frame and the driving mechanism of the present invention.

FIG. 8 is a schematic diagram of the fixing frame and the driving mechanism of the present invention when being separated.

FIG. 9 is a schematic diagram of the specific structure of the floating assembly of the present invention.

FIG. 10 is a schematic diagram of the specific structure of the floating block, the elastic member and the clamping slot of the present invention.

FIG. 11 is a schematic diagram of the limit assembly and the mounting groove structure of the present invention.

FIG. 12 is a schematic diagram of the mobile mechanism of the present invention when it is installed and matched with the fixed frame.

In the figure: 1. headrest body; 2. driving mechanism; 201. driving device; 202. screw rod; 203. driving plate; 204. frame; 3. sound insulation cotton; 4. fixing frame; 5. curved rod; 6. sleeve; 7. floating assembly; 701. elastic member; 702. floating block; 703. floating groove; 8. mounting groove; 9. limiting assembly; 901. limiting block; 902. limiting groove; 10. clamping groove; 11. recessed portion; 12. slot; 13. raised portion; 14. movable gap; 15. clamping gap.

DETAILED DESCRIPTION

Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present application.

It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

In the prior art, the electric headrests on the backrests of cars are adjusted by straight up and straight down. For cars, there are generally only two rows of seats in the front and back, and the seat backs themselves are relatively high, so the straight up and straight down method can also be used to adjust the headrests. However, for some seven-seat or nine-seat cars, there will be a third row of seats at this time. In order to make the rear side of the car have more usable space, the third row of seats are generally foldable. Of course, the seats in this row will also be set shorter, and the stroke of the headrest adjustment will be longer, which will bring such a problem: after adjustment, the curvature of the headrest and the back of the seat cannot adapt well, that is, it is not ergonomic, and then it will cause discomfort to the passengers. Of course, there are also arc-shaped lifting headrests on the market, but their adjustment stroke is relatively short; if a long-stroke arc-shaped lifting adjustment method is adopted, it is easy to bring the risk of lifting and locking.

Therefore, the inventor of the present application has developed an electrically adjustable headrest, one embodiment of which is shown in Figures 1 to 12, including a fixing frame 4, a headrest body 1 and a driving mechanism 2. The headrest body 1 is installed on the side of the fixing frame 4 in a curved sliding manner, and the driving mechanism 2 is installed on the bottom end of the fixing frame 4 through a floating component 7 and the output end is connected to the headrest body 1.

It can be understood that when adjusting the height of the headrest body 1, in the initial state, as shown in (a) in Figure 3, the headrest body 1 is in the lowest state. The driving mechanism 2 is started, and the driving mechanism 2 can drive the headrest body 1 to move upward along the fixing frame 4 in a curved manner, as shown in (b) in Figure 3; thereby, the headrest body 1 can better fit the passenger's head, greatly improving comfort, and solving the problem of the headrest being easily stuck when being raised and lowered under a long-stroke arc trajectory.

It should be known that when the headrest body 1 is lifted in a curved manner, it will move in the vertical direction and also have a partial displacement in the horizontal direction. Therefore, the driving mechanism 2 cannot be installed in a fixed manner, otherwise it will interfere with the curved lifting of the headrest body 1. Therefore, the driving mechanism 2 is installed using a floating component 7. In other words, while the driving mechanism 2 drives the headrest body 1 to move upward, the driving mechanism 2 can move (swing) along the fixing frame 4 under the action of the floating component 7, so that the driving mechanism 2 is adapted to the curved trajectory of the headrest body 1.

It should be noted that we know that there should be a certain inclination angle between the backrest and the seat cushion of the car, that is, the two will not be in a vertical state, so as to meet the comfort of the human body when leaning back. If the headrest body 1 is adjusted, the headrest body 1 is adjusted along the inclined backrest in a straight line. In this way, after the headrest body 1 is raised, it will be away from the direction of the backrest, so that the passenger's head has to lean back a lot to cooperate with the headrest body 1, which will cause discomfort. Therefore, when the headrest body 1 is raised, it needs to move forward relative to the backrest, so that it can be adapted to people of different heights for comfortable use. It should be known that the headrest body 1 will not deviate too much from the original position during the upward movement, so the offset swing angle θ of the drive mechanism 2 should not be too large, for example θ can be between 5°-15°.

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

Structure 1: As shown in FIG. 6 , the floating assembly 7 includes an elastic member 701 , and the driving mechanism 2 is mounted on the fixing frame 4 via the elastic member 701 .

It is understandable that, for example, the elastic member 701 can be made of rubber or silicone material. Since the elastic member 701 can be deformed when subjected to pressure, when the headrest body 1 is adjusted in a curved manner, the elastic member 701 can be elastically deformed to allow the driving mechanism 2 to move (swing) along the fixing frame 4.

Structure 2: As shown in FIG. 7 and FIG. 8 , the floating assembly 7 includes a floating block 702 and a floating groove 703 . The floating block 702 is installed on the driving mechanism 2 , and the floating groove 703 is arranged on the fixing frame 4 . The floating block 702 and the floating groove 703 are snap-fitted and a movable gap 14 is left between the two.

It is understandable that, due to the existence of the movable gap 14, the floating block 702 and the floating groove 703 can move relative to each other. When the headrest body 1 is adjusted in a curved manner, the cooperation between the floating block 702 and the floating groove 703 can make the driving mechanism 2 move (swing) along the fixing frame 4.

Structure three: The floating assembly 7 includes an elastic member 701, a floating block 702 and a floating groove 703. The floating block 702 is connected to the driving mechanism 2 via the elastic member 701, and the floating groove 703 is arranged on the fixing frame 4. The floating block 702 and the floating groove 703 are snap-fitted and a movable gap 14 is left between the two.

It can be understood that due to the existence of the movable gap 14 and the setting of the elastic member 701, when the headrest body 1 is adjusted to rise and fall in a curved manner, the cooperation between the floating block 702 and the floating groove 703 and the deformation of the elastic member 701 can enable the driving mechanism 2 to move (swing) along the fixing frame 4.

It should be noted that all three structures can meet actual needs, and technicians in this field can choose according to actual conditions. It should be known that for structure one, the amplitude of the swing of the drive mechanism 2 depends on the degree of deformation of the elastic member 701. For structure two, the amplitude of the swing of the drive mechanism 2 depends on the active gap 14 between the floating block 702 and the floating groove 703. As for structure three, its essence is a combination of the two, that is, the amplitude of the swing of the drive mechanism 2 depends on the degree of deformation of the elastic member 701 and the size of the active gap 14. Therefore, when making specific settings, the degree of deformation of the elastic member 701 and the active gap 14 can compensate each other, thereby making the stability of the drive mechanism 2 better and also improving the service life of the entire mechanism.

For example, assuming that the swing amplitude of the drive mechanism 2 is θ, the corresponding deformation degree of the elastic member 701 in structure 1 is S, and the corresponding range of the active gap 14 in structure 2 is C; and for structure 3, the deformation degree of the elastic member 701 can be set to half S, and the range of the active gap 14 is half C, that is, the superposition of the two can achieve the overall swing amplitude θ of the drive mechanism 2. Therefore, compared with the individual structures 1 and 2, the deformation degree of the elastic member 701 and the range of the active gap 14 in structure 3 can be set smaller, which can make its service life longer, and also improve its performance stability and reliability. For example, in a bumpy road environment, structure 3 is more able to maintain a stable working state than other structures, reducing the possibility of failure and damage.

As a further description of the above three embodiments, in one embodiment of the present application, as shown in Figures 7 and 8, how the floating block 702 is installed in cooperation with the floating groove 703 on the fixing frame 4. A mounting groove 8 connected to the floating groove 703 is provided at the top of the fixing frame 4.

It can be understood that the upper end of the floating block 702 is in a "T"-shaped structure. When installing the driving mechanism 2, the floating block 702 is first matched with the installation groove 8 so that the horizontal part of the top of the floating block 702 extends out of the installation groove 8, and then the floating block 702 is moved along the installation groove 8 until the floating block 702 moves to the floating groove 703 for snap-fitting. Of course, at this time, since the two are snap-fitted, there is still a certain movable gap 14, which facilitates the installation and matching of the two. However, under the swinging action of the driving mechanism 2, it is easy to cause the floating block 702 and the floating groove 703 to move and misalign.

Therefore, in order to solve the above technical problems, as shown in Fig. 7, a limit assembly 9 can be provided between the floating block 702 and the fixed frame 4. It should be known that when the floating block 702 moves and cooperates with the floating groove 703, the floating block 702 can be locked to the fixed frame 4 by the limit assembly 9, thereby achieving stable cooperation between the driving mechanism 2 and the fixed frame 4, ensuring the stability and smooth operation of the entire device.

As shown in FIG. 11 , the limit assembly 9 includes a limit block 901 and a limit slot 902 . Of course, there are many ways to install the limit block 901 and the limit slot 902 , including but not limited to the following two:

Mode 1: The limiting block 901 is installed on the floating block 702 , and the limiting groove 902 is provided on the fixing frame 4 . Mode 2: The limiting block 901 is installed on the fixing frame 4 , and the limiting groove 902 is provided on the floating block 702 .

It can be understood that the cooperation between the limit block 901 and the limit groove 902 is synchronized with the cooperation between the floating block 702 and the floating groove 703. That is, in the initial state of installation, as shown in (c) in Figure 12, the limit block 901 and the limit groove 902 are in a state of dislocation. When the floating block 702 enters the floating groove 703 from the installation groove 8, the limit block 901 will also move toward the limit groove 902 driven by the floating block 702. When the floating block 702 cooperates with the floating groove 703, the limit block 901 will also move and snap into the limit groove 902 to achieve installation locking of the floating block 702, as shown in (d) in Figure 12.

It should be noted that, as shown in Figure 10, the floating block 702 can be integrally formed with the limit block 901, and the floating block 702 is made of plastic. When the limit block 901 is not matched with the limit groove 902, the limit block 901 is in an extrusion deformation state under the action of the fixed frame 4. When the limit block 901 corresponds to the limit groove 902, the limit block 901 will lose the extrusion effect and will restore the deformation, so that the limit block 901 and the limit groove 902 are limitedly engaged.

Of course, the top of the floating block 702 and the fixing frame 4 are connected by a snap fit, which can facilitate the installation and disassembly between the two and improve the efficiency of assembly and disassembly. Therefore, based on the above embodiment, the bottom of the floating block 702 and the driving mechanism 2 and the elastic member 701 can also be installed by a similar snap fit, so as to facilitate the subsequent assembly and disassembly.

Specifically, as shown in Figures 6 and 10, the floating block 702 and the driving mechanism 2 are snap-fitted, and a snap-fit gap 15 is provided therebetween. The elastic member 701 is disposed within the snap-fit gap 15, and the elastic member 701, the floating block 702 and the driving mechanism 2 are abutted against each other, thereby achieving installation of the bottom end of the floating block 702 through the elastic member 701 and the driving mechanism 2.

It should be noted that at this time, the floating block 702 is mainly installed on the drive mechanism 2 by means of a snap connection, rather than completely connecting the drive mechanism 2 with the elastic member 701. Because the elastic member 701 is made of a flexible material, if the drive mechanism 2 is connected entirely by the elastic member 701, the elastic member 701 is easily irreversibly deformed and damaged under the force of the drive mechanism 2, and the service life is short. In this embodiment, the elastic member 701 mainly plays the role of filling the connection, and then on the premise of ensuring that the drive mechanism 2 can be movably connected, it can also ensure the stability of the connection of the drive mechanism 2 and the subsequent disassembly and assembly, thereby increasing the service life and reliability of the entire device.

As a further description of the above embodiment, the cooperation between the floating block 702 and the driving mechanism 2 is as follows: the bottom end of the floating block 702 is integrally formed with a "I"-shaped card block, and the top end of the driving mechanism 2 is provided with a card slot 10, and the upper ends of the inner walls on both sides of the card slot 10 extend inward to form a protrusion 13, thereby making the card slot 10 present a "T"-shaped structure. The two sides of the elastic member 701 are recessed inward to form a recessed portion 11 and the middle of the elastic member 701 is provided with a slot 12, as shown in FIG. 10, which is the shape structure of the elastic member 701, for example, the elastic member 701 is made of rubber or silicone material and is also integrally formed.

It can be understood that when the floating block 702, the elastic member 701 and the driving mechanism 2 are matched, the elastic member 701 can be first inserted into the slot 10, that is, the protrusion 13 and the recessed portion 11 are plugged together, and then the vertical section of the block is inserted into the slot 12. Of course, at the same time, the block will also be inserted into the slot 10, thereby realizing the plug-in fit between the three.

It can be seen that, as shown in Figure 6, the floating block 702, the elastic member 701 and the slot 10 are tightly engaged and limited, and due to the action of the elastic member 701, the floating block 702 and the driving mechanism 2 can be in flexible contact, which can greatly reduce the wear between the floating block 702 and the driving mechanism 2. At the same time, the elastic member 701 can also play a certain shock-absorbing and buffering role, that is, when the car is bumped, the elastic member 701 can absorb the impact energy through elastic deformation, while ensuring a stable connection, it also plays a role in vibration reduction and noise reduction.

Of course, in order to further improve the noise reduction effect, as shown in Figures 1 and 4, sound insulation (such as sound insulation cotton 3) can be installed on both sides of the driving mechanism 2. The design of these sound insulation can not only effectively reduce the noise generated by the driving mechanism 2 during operation, but also improve the stability of the entire device to a certain extent. Since the driving mechanism 2 is installed inside the backrest, the provision of the sound insulation can also reduce the hard friction between the driving mechanism 2 and the backrest, thereby protecting the backrest and improving its service life.

In one of the embodiments of the present application, as shown in Figures 1 and 3, the cooperation between the headrest body 1 and the fixing frame 4 is as follows: a curved rod 5 is installed at the bottom end of the headrest body 1, the bottom end of the curved rod 5 is connected to the output end of the driving mechanism 2, and a sleeve 6 is fixedly installed on the side of the fixing frame 4, and the curved rod 5 and the sleeve 6 are slidably cooperated to realize the curved sliding installation of the headrest body 1.

It is understandable that, in the process of the driving mechanism 2 driving the curved rod 5 to rise, the curved rod 5 can move upward in a curved manner under the guidance of the sleeve 6. Of course, in order to improve the stability of the headrest body 1, the curved rod 5 can be a pair and connected to the headrest body 1 for support, or the curved rod 5 can be an integrated molding structure in the shape of a "冂", thereby making the entire structure of the headrest body 1 more stable.

As shown in FIG4 , the present application does not limit the structural form of the driving mechanism 2. A specific structure is provided below for reference: the driving mechanism 2 includes a frame 204, a driving device 201, a screw 202 and a driving plate 203. The frame 204 is mounted on the bottom end of the fixed frame 4 through a floating assembly 7. The screw 202 is vertically rotatably mounted in the frame 204. The driving plate 203 is vertically slidably mounted on the frame 204 and cooperates with the screw 202. The driving plate 203 and the bottom end of the curved rod 5 are detachably mounted (for example, bolted or snap-fitted with a retaining spring). The driving device 201 is mounted on the frame 204 and connected to the screw 202 through the output end. Of course, the driving device 201 is common knowledge known to those skilled in the art, and can be a motor, a rotary cylinder or a rotary hydraulic cylinder, etc. Here, a motor is preferably used.

It is understandable 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 drive plate 203, and the drive plate 203 drives the headrest body 1 to be adjusted upward through the curved rod 5. Similarly, when the motor is reversed, the headrest body 1 can be adjusted downward.

Of course, in the above-mentioned driving mechanism 2, hydraulic cylinders and pneumatic cylinders can also be used to drive the headrest body 1 to be raised and lowered. If a hydraulic cylinder is used, a matching hydraulic system is required, which is costly and has high maintenance costs for a single action; if a pneumatic cylinder is used, the transmission exhaust noise is large and the sealing requirements are higher. As for the matching method of the above-mentioned motor screw 202, first of all, it has a self-locking performance, that is, when the motor stops running, the headrest body 1 can stably maintain the adjusted position; at the same time, it is simple to maintain, low noise, and can work normally in high/low temperature, anti-corrosion/explosion-proof harsh environments, so this method is preferably used.

In one of the embodiments of the present application, as shown in Figures 7 to 9, in order to further improve the stability and firmness of the cooperation between the driving mechanism 2 and the fixed frame 4, the floating block 702, the floating groove 703, the elastic member 701 and the card slot 10 and other related installation structures are preferably adopted in a pair, and the left-right symmetrical arrangement allows the top two sides of the driving mechanism 2 to cooperate with the fixed frame 4, thereby greatly improving the stability.

It should be noted that, as shown in FIG8 , the number of corresponding mounting grooves 8 can be set to one. As we know, the mounting grooves 8 are set to enable the floating block 702 to be installed and matched with the floating grooves 703. In the case where a pair of floating grooves 703 are set, only one mounting groove 8 is needed to achieve the matching between the floating block 702 and the floating grooves 703. Specifically, as shown in FIG8 , the mounting grooves 8 set on the left side are connected to the floating grooves 703, and the floating grooves 703 set on the right side are located at the right end of the fixing frame 4 and are connected to the outside.

The working principle of the present invention is:

First, the fixing frame 4 is fixedly installed inside the backrest, and of course the driving mechanism 2 is also located inside the backrest; and the curved rod 5 extends out from the top of the backrest; when the height of the headrest body 1 needs to be adjusted, the motor is started to rotate, and the motor drives the screw rod 202 to rotate, and the screw rod 202 acts on the 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, under the action of the floating groove 703, the floating block 702 and the elastic member 701, the frame 204 will swing with the entire driving mechanism 2, and then cooperate with the curved lifting trajectory of the headrest body 1.

It should be noted that, during the subsequent folding, that is, when the headrest body 1 is adjusted and retracted downward, the headrest body 1 will move downward toward the backrest, and after moving to the lowest position, the headrest body 1 will be close to the backrest, and will not be squeezed or compressed. Of course, a groove body can also be provided at the top of the backrest, and after the headrest body 1 moves to the lowest position, the headrest body 1 can move downward in a curved manner into the groove body and hide, and the headrest body 1 can be protected when the seat (backrest) is folded, which greatly improves the protective performance of the headrest body 1 and thus increases the service life.

The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims (7)

1. An electrically adjustable headrest, comprising:

A fixing frame;

the headrest body is arranged on the side part of the fixing frame in a curve sliding manner; and

The driving mechanism is arranged at the bottom end of the fixing frame through a floating assembly, and the output end of the driving mechanism is connected with the headrest body; the driving mechanism is suitable for driving the headrest body to perform curve lifting adjustment along the fixed frame, and at the moment, the driving mechanism is suitable for moving along the fixed frame under the action of the floating assembly so as to be matched with the curve track of the headrest body;

The floating assembly comprises an elastic piece, and the driving mechanism is arranged on the fixed frame through the elastic piece; when the headrest body is adjusted, the elastic piece is suitable for elastic deformation so that the driving mechanism moves along the fixing frame;

And/or the floating assembly comprises a floating block and a floating groove, wherein the floating block is arranged on the driving mechanism, and the floating groove is arranged on the fixed frame; the floating block is matched with the floating groove in a clamping way, and a movable gap is reserved between the floating block and the floating groove, so that the driving mechanism moves along the fixing frame.

2. The electrically adjustable headrest of claim 1, wherein: the top end of the fixing frame is provided with a mounting groove communicated with the floating groove; when the driving mechanism is installed, the floating block is suitable for being matched with the installation groove, then the floating block is suitable for moving along the installation groove until being in clamping fit with the floating groove, and the floating block is locked on the fixing frame through the limiting component.

3. The electrically adjustable headrest of claim 2, wherein: the limiting assembly comprises a limiting block and a limiting groove, the limiting block is arranged on the floating block, and the limiting groove is arranged on the fixing frame; or the limiting block is arranged on the fixed frame, and the limiting groove is formed in the floating block; the limiting block is matched with the limiting groove to realize locking limiting of the floating block.

4. The electrically adjustable headrest of claim 3, wherein: the floating block is matched with the driving mechanism in a clamping way, a clamping gap is reserved between the floating block and the driving mechanism, and the elastic piece is arranged in the clamping gap and is matched with the floating block and the driving mechanism in a propping way.

5. The electrically adjustable headrest of claim 4, wherein: the bottom end of the floating block is provided with a clamping block with an I-shaped structure, the top end of the driving mechanism is provided with clamping grooves, and the upper ends of the inner walls of the two sides of the clamping grooves extend inwards to form protruding parts, so that the clamping grooves are in a T-shaped structure; the two sides of the elastic piece are inwards recessed to form a recessed part, and a slot is formed in the middle of the elastic piece; the protruding portion is in plug-in fit with the recessed portion, the vertical section of the clamping block is in plug-in fit with the slot and the clamping groove, and the elastic piece is in butt fit with the outer portions of two sides of the clamping block.

6. The electrically adjustable headrest of claim 1, wherein: the bottom of headrest body installs curved pole, curved pole the bottom with actuating mechanism's output is connected, the sleeve is installed to the lateral part of mount, curved pole with telescopic sliding fit realizes the curved slidable mounting of headrest body.

7. The electrically adjustable headrest of claim 6, wherein: the driving mechanism comprises a frame, a driving device, a screw rod and a driving plate, wherein the frame is arranged at the bottom end of the fixed frame through a floating assembly, the screw rod is vertically rotatably arranged at the frame, the driving plate is vertically slidably arranged at the frame and matched with the screw rod, the driving plate is detachably arranged at the bottom end of the curved rod, the driving device is arranged at the frame and connected with the screw rod through an output end, and the screw rod drives the driving plate to lift and move under the driving of the driving device.