Adjustable head supporting device

Abstract

The utility model discloses an adjustable head supporting device, which relates to the technical field of driving and riding articles, and comprises a mounting rack, a mounting clamping plate and a back cushion, and a seat pillar is clamped and fixed through the mounting rack and the mounting clamping plate; a movable column is arranged on the portion, facing the mounting clamping plate, of the mounting frame, a back cushion seat is arranged on the movable column, rotating mechanisms used for rotating the two ends of a back cushion are arranged on the two sides of the back cushion seat, an adjusting mechanism is arranged between the mounting frame and the movable column, and the movable column can be pushed forwards and backwards to drive the back cushion to move forwards and backwards so as to meet the requirements of users. When the movable column moves back and forth, the positioning notches push and extrude the clamped second positioning balls, so that the second positioning balls outwards move into the second positioning holes, the movable column can move back and forth, the second positioning balls are pushed into the next group of positioning notches through second positioning springs, and therefore the front-back position of the back cushion is fixed; therefore, the front-back position of the back cushion can be flexibly adjusted, and the comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of driving supplies, in particular to an adjustable head support device. Background Art

[0002] In daily life, people often need to lean on and support their bodies when sitting on a seat. Especially in a car seat, the support of the seat for the user's head is extremely important. When a vehicle is rear-ended, due to inertia, the human body will fall backward. At this time, the pressure of the vehicle accelerating or decelerating is concentrated on the vulnerable neck and head of the human body, and the headrest plays a buffering role to protect the human head. At the same time, the headrest can also provide support for the head and neck during long-term riding of the driver and passengers, relieving the fatigue of the user.

[0003] According to the seat headrest and vehicle disclosed in the patent publication number CN217396336U, it includes a headrest skeleton; an intermediate support plate connected to the headrest skeleton; a first wing, a second wing and a transmission device, the first wing and the second wing are pivotally connected to the two ends of the intermediate support plate in the left-right direction through the transmission device; and a driving device, the driving device is drivingly connected to the transmission device.

[0004] Although in the above patent, under the drive of the driving device, the first wing and the second wing can pivot continuously and stably relative to the intermediate support plate, with a high degree of automation. During this process, the occupant's head can always contact the intermediate support plate, so as to stop the operation of the driving device in time when the first wing and the second wing pivot to a suitable angle. Therefore, the angle adjustment of the first wing and the second wing is time-saving and labor-saving. However, the intermediate support plate is fixedly connected to the headrest skeleton, and the headrest skeleton is fixedly connected to the mounting pillar on the seat, resulting in a fixed position of the headrest and being unable to adjust the front and rear position of the headrest according to the needs of the user, with insufficient comfort.

[0005] Therefore, it is necessary to propose a new technical solution to solve the above problems. Summary of the Utility Model

[0006] The utility model aims to provide a technical solution that can solve the problem that the existing headrest cannot adjust the position of the headrest according to the needs of the user to overcome the above deficiencies.

[0007] To achieve the above object, the utility model provides the following technical solution: An adjustable head support device includes a mounting bracket, a mounting clamp and a headrest, and the seat pillar is clamped and fixed through the mounting bracket and the mounting clamp;

[0008] One part of the mounting bracket facing the mounting clamp is provided with a movable column, a headrest seat is arranged on the movable column, and rotating mechanisms for rotating the two ends of the headrest are arranged on both sides of the headrest seat;

[0009] An adjustment mechanism is provided between the mounting bracket and the movable column. The adjustment mechanism includes a cavity provided inside the mounting bracket for the movement of the movable column. A positioning sleeve through which the movable column can pass is provided in the cavity. Multiple groups of positioning notches are formed at the four corners of the movable column, and second positioning holes are formed at the four corners of the positioning sleeve.

[0010] On the inner wall of the cavity, second positioning springs are fixedly provided at four places. A second positioning ball is connected to the second positioning spring, and the second positioning ball passes through the second positioning hole and is stuck in the positioning notch. A clamping portion is formed on the inner wall of the positioning sleeve. A clamping portion is formed on the movable column by opening two wire grooves. An auxiliary spring is fixedly provided in the cavity. One end of the auxiliary spring is connected to a stop block. First abutting blocks are provided on both sides of the stop block, and second abutting blocks are provided on both sides inside the movable column.

[0011] As a further solution of the present invention: Semi-grooves a and semi-grooves b are formed on the opposite sides of the mounting bracket and the mounting clamping plate. The semi-grooves a and semi-grooves b form a pillar clamping groove. Connecting bolts are provided at both ends of the mounting bracket, and nuts are fixedly provided on the connecting bolts. The nuts are located on the side of the mounting bracket away from the mounting clamping plate. Nuts are provided at both ends of the mounting clamping plate. By turning the nuts, the connecting bolts are connected and fixed to the nuts, so that the semi-grooves a and semi-grooves b clamp the seat pillar.

[0012] As a further solution of the present invention: First anti-slip portions and second anti-slip portions are provided on the opposite sides of the semi-grooves a and semi-grooves b.

[0013] As a further solution of the present invention: The headrest includes a front headrest and a rear headrest. The front headrest and the rear headrest are combined to form a headrest. The front headrest and the rear headrest are wrapped with a pillowcase, and two massage heads are installed on the front headrest.

[0014] As a further solution of the present invention: The headrest seat includes a fixing plate provided inside the front headrest and the rear headrest. The rear headrest is provided with an installation groove for fixedly connecting the fixing plate to the front headrest.

[0015] A groove body is formed on the fixing plate. An installation plate is fixedly provided inside the groove body. A grabbing block is provided on one side of the movable column. Outer convex portions are provided on both sides of the installation plate. A plugging portion matching with the outer convex portions is formed on one side of the grabbing block, so that the installation plate and the grabbing block are plugged and aligned.

[0016] On the side of the installation plate facing the grabbing block, first positioning holes are evenly arranged in two rows. Four first positioning springs arranged in a square shape are provided inside the grabbing block. A first positioning ball having the same diameter as the first positioning hole is connected to the first positioning spring, and a through hole for the first positioning ball to enter and exit is provided on the plugging portion.

[0017] As a further solution of the utility model: the rotating mechanism includes a fixed sleeve connected to both sides of the pillow seat, a rotating sleeve is provided on the lower side of the fixed sleeve, a pillow side seat is fixedly connected to the outside of the rotating sleeve, two opposing arc plates are provided inside the fixed sleeve, the arc plates are fixedly connected to the rotating sleeve, a plurality of arc grooves evenly arranged in an annular shape are formed on the inner side of the fixed sleeve, and an arc convex block matching and docking with the arc groove is provided on the arc plate;

[0018] The fixing sleeve is provided with a fixing ring, and two sides of the fixing ring are provided with limited openings;

[0019] A return spring is arranged between the two arc-shaped plates, and the return spring is used to make the arc-shaped protrusion pass through the limiting opening and be clamped into the arc-shaped groove;

[0020] Two bent annular grooves are formed on the pillow.

[0021] As a further solution of the utility model: a mounting block is provided on a side of the mounting frame away from the headrest, the mounting block is connected to a fixed arm, a ball head connector is provided on the fixed arm, and a splint is provided on the ball head connector.

[0022] Compared with the prior art, the beneficial effects of this technical solution are:

[0023] (I): 1. When using the utility model, the movable column can be pushed forward and backward to drive the headrest to move forward and backward to meet the needs of the user. When the movable column moves forward and backward in the cavity inside the mounting frame, the positioning notch pushes the inserted second positioning ball, so that the second positioning ball moves outward into the second positioning hole, so that the movable column can move forward and backward inside the positioning sleeve. When the next set of positioning notches moves to the position of the second positioning hole, the second positioning spring utilizes elastic recovery to push the second positioning ball into the positioning notch, fixes the position of the movable column, thereby fixing the front and rear position of the headrest, and further realizing flexible adjustment of the front and rear position of the headrest, so that the user can quickly adjust the front and rear position more as needed, thereby improving comfort.

[0024] 2. When the movable column is inserted into the positioning sleeve, the snap-fitting part will be deformed and shrink inward after contacting with the locking part. At this time, if the user pulls the movable column outward and there is only the last set of positioning notches left, the movable column will be separated from the mounting frame when it is pulled out again. The snap-fitting part will press against the locking part formed on the inner wall of the positioning sleeve, making it impossible for the user to pull out the movable column directly. The user needs to press down to deform the snap-fitting part to pull out the movable column to avoid incorrect operation.

[0025] 3. The elastic force of the auxiliary spring continues to push the stop block, causing the stop block to push the movable column outwards. However, the movable column is blocked by the second positioning ball, and the thrust of the stop block is not sufficient to move the movable column. When the user manually pulls the movable column to adjust the front-back distance of the headrest, with the addition of the thrust of the stop block, the movable column can be pulled more easily. At the same time, the auxiliary spring and the stop block apply an outward pushing force to the movable column, increasing the force required for the movable column to move towards the mounting bracket, thus preventing the headrest from moving backward when the user leans on it.

[0026] (2): The present utility model massages the necks of the drivers and passengers leaning on the headrest through two massage heads to relax the neck muscles.

[0027] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 is a schematic structural diagram of the present utility model;

[0030] Figure 2 is a schematic structural diagram of the present utility model without the lower mounting plate installed;

[0031] Figure 3 is a schematic structural diagram of the mounting bracket and the mounting clamping plate of the present utility model;

[0032] Figure 4 is a schematic structural diagram of the mounting bracket and the mounting clamping plate of the present utility model from another perspective;

[0033] Figure 5 is an exploded structural diagram of the headrest of the present utility model;

[0034] Figure 6 is a schematic structural diagram of the adjusting mechanism of the present utility model;

[0035] Figure 7 is an exploded structural diagram of the adjusting mechanism of the present utility model;

[0036] Figure 8 is a schematic top view structural diagram of the adjusting mechanism of the present utility model;

[0037] Figure 9It is a schematic structural diagram of the movable column of the present utility model;

[0038] Figure 10 It is a schematic structural diagram of the positioning sleeve of the present utility model;

[0039] Figure 11 It is a schematic structural diagram of the stop block of the present utility model;

[0040] Figure 12 is Figure 8 The enlarged schematic diagram of the partial structure at position B in

[0041] Figure 13 It is a schematic structural diagram of the fixing plate of the present utility model;

[0042] Figure 14 It is an exploded structural diagram of the fixing plate of the present utility model;

[0043] Figure 15 It is a top view structural diagram of the fixing plate of the present utility model;

[0044] Figure 16 is Figure 13 The enlarged schematic diagram of the partial structure at position A in

[0045] Figure 17 It is a schematic structural diagram of the rotating mechanism of the present utility model;

[0046] Figure 18 It is an exploded structural diagram of the rotating mechanism of the present utility model;

[0047] The corresponding reference numerals in the drawings are explained as follows:

[0048] 1. Mounting frame; 101. Half clamping groove a; 102. Connecting bolt; 103. Nut; 104. First anti-slip part; 105. Assembly groove; 106. Card slot;

[0049] 2. Mounting clamping plate; 201. Half clamping groove b; 202. Nut; 203. Second anti-slip part;

[0050] 3. Headrest; 301. Front headrest; 302. Rear headrest; 303. Pillowcase; 304. Massage head; 305. Bent annular groove;

[0051] 4. Movable column; 401. Grabbing block; 402. Insertion part; 403. First positioning spring; 404. First positioning ball; 405. Positioning notch; 406. Clamping part; 407. Second abutting block;

[0052] 5. Headrest seat; 501. Fixing plate; 502. Groove body; 503. Mounting plate; 504. Outer convex part; 505. First positioning hole;

[0053] 6. Rotating mechanism; 601. Fixed sleeve; 602. Rotating sleeve; 603. Side seat of the headrest; 604. Arc plate; 605. Arc groove; 606. Arc convex block; 607. Fixed ring; 608. Limit port; 609. Return spring;

[0054] 7. Adjusting mechanism; 701. Positioning sleeve; 702. Second positioning hole; 703. Second positioning spring; 704. Second positioning ball; 705. Clamping part; 706. Auxiliary spring; 707. Stopping block; 708. First abutting block;

[0055] 8. Assembly block; 801. Fixed arm; 802. Ball head connector; 803. Clamping plate. Detailed implementation manners

[0056] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0057] Please refer to Figure 1-18 , an adjustable head support device, including a mounting bracket 1, a mounting clamping plate 2 and a headrest 3, and the seat pillar is clamped and fixed by the mounting bracket 1 and the mounting clamping plate 2.

[0058] The mounting bracket 1 is composed of an upper shelf plate and a lower shelf plate. The two shelf plates can be fixedly connected by means such as gluing and bolt fixing, or detachably connected by means such as sleeving. This is not limited here. After the two shelf plates are combined, the space required by the present invention is formed inside.

[0059] One part of the mounting bracket 1 facing the mounting clamping plate 2 is provided with a movable column 4. A headrest seat 5 is provided on the movable column 4. Rotating mechanisms 6 for rotating the two end parts of the headrest 3 are provided on both sides of the headrest seat 5. The rotating mechanisms 6 are used to make the two ends of the headrest 3 fit the user's neck more closely;

[0060] An adjusting mechanism 7 is provided between the mounting bracket 1 and the movable column 4.

[0061] As Figure 1 and Figure 5 shown, preferably, the headrest 3 includes a front headrest 301 and a rear headrest 302. The front headrest 301 and the rear headrest 302 are combined to form the headrest 3. A pillowcase 303 is wrapped outside the front headrest 301 and the rear headrest 302. Two massage heads 304 are installed on the front headrest 301.

[0062] Specifically, the headrest 3 is composed of two parts, a front headrest 301 and a rear headrest 302, and a groove is formed between the front headrest 301 and the rear headrest 302. The headrest seat 5 and the rotating mechanism 6 are evenly arranged in the groove. The connection method between the front headrest 301 and the rear headrest 302 can be fixed connection methods such as bonding and bolt connection, or detachable connection methods such as socket connection, which are not limited herein.

[0063] A PCB circuit board (not shown in the figure) is also installed in the groove formed between the front headrest 301 and the rear headrest 302. The PCB circuit board is electrically connected to the two massage heads 304, and the external power supply is connected to the PCB circuit board, so as to meet the condition for starting the massage heads 304, and massage the necks of the drivers and passengers leaning on the headrest 3 to relax the neck muscles.

[0064] Wrap the pillowcase 303 around the front headrest 301 and the rear headrest 302 to make the surface smooth.

[0065] As Figures 1 to 4 shown, preferably, semi-grooves a101 and semi-grooves b201 are formed on the opposite sides of the mounting bracket 1 and the mounting clamping plate 2. The semi-grooves a101 and the semi-grooves b201 form a pillar clamping groove. Connecting bolts 102 are provided at both ends of the mounting bracket 1, and nuts 103 are fixed on the connecting bolts 102. The nuts 103 are located on the side of the mounting bracket 1 away from the mounting clamping plate 2. Nuts 202 are provided at both ends of the mounting clamping plate 2. By turning the nuts 103, the connecting bolts 102 are connected and fixed to the nuts 202, so that the semi-grooves a101 and the semi-grooves b201 clamp the seat pillar. The number of pillar clamping grooves can be changed according to the number of seat pillars, which is not limited in the present utility model.

[0066] Specifically, when installing the present utility model on the seat pillar, the mounting bracket 1 and the mounting clamping plate 2 are respectively sleeved on the front and rear sides of the seat pillar. At this time, turn the nut 103 to thread-connect the connecting bolt 102 with the nut 202 on the mounting clamping plate 2, so that the mounting bracket 1 and the mounting clamping plate 2 approach each other, and the semi-grooves a101 and the semi-grooves b201 gradually form a pillar clamping groove and sleeve the seat pillar, thereby fixing the present utility model on the seat pillar.

[0067] First anti-slip portions 104 and second anti-slip portions 203 are provided on the opposite sides of the semi-grooves a101 and the semi-grooves b201. Further, the first anti-slip portions 104 and the second anti-slip portions 203 can prevent sliding and avoid sliding when the user uses it.

[0068] As Figures 1-2 and Figures 6-12As shown, preferably, the adjustment mechanism 7 includes a cavity arranged inside the mounting frame 1 for the movable column 4 to move, a positioning sleeve 701 for the movable column 4 to pass through is provided in the cavity, a plurality of positioning notches 405 are formed at the four corners of the movable column 4, and second positioning holes 702 are provided at the four corners of the positioning sleeve 701; second positioning springs 703 are fixedly provided at four places on the inner wall of the cavity, a second positioning ball 704 is connected to the second positioning spring 703, and the second positioning ball 704 passes through the second positioning hole 702 and is inserted into the positioning notch 405.

[0069] Specifically, when using the utility model, the movable column 4 can be pushed forward and backward so that the movable column 4 drives the pillow 3 to move forward and backward to meet the user's needs. When the movable column 4 moves forward and backward in the cavity inside the mounting frame 1, the positioning notch 405 pushes the inserted second positioning ball 704, so that the second positioning ball 704 moves outward into the second positioning hole 702, so that the movable column 4 can move forward and backward inside the positioning sleeve 701. When the next set of positioning notches 405 moves to the position of the second positioning hole 702, the second positioning spring 703 uses elastic recovery to push the second positioning ball 704 into the positioning notch 405, fixes the position of the movable column 4, thereby fixing the front and rear position of the pillow 3, and then realizing flexible adjustment of the front and rear position of the pillow, so that the user can quickly adjust the front and rear position more as needed, thereby improving comfort.

[0070] The second positioning holes 702 at the four corners of the positioning sleeve 701 have a certain length. When the second positioning ball 704 moves outward and leaves the positioning notch 405, it will move to the second positioning hole 702. The second positioning hole 702 is used to keep the second positioning ball 704 moving vertically during the movement.

[0071] Furthermore, a locking portion 705 is formed on the inner wall of the positioning sleeve 701, and a locking portion 406 is formed on the movable column 4 by opening two wire grooves. Two wire grooves are opened on the movable column 4 to form a locking portion 406 that can be deformed when squeezed.

[0072] When the movable column 4 is inserted into the positioning sleeve 701, the snap-fitting portion 406 contacts the locking portion 705 and deforms and shrinks inward. At this time, if the user pulls the movable column 4 to move outward and only the last group of positioning notches 405 is left, the movable column 4 will be separated from the mounting frame 1 when it is pulled out again. The snap-fitting portion 406 will resist the locking portion 705 formed on the inner wall of the positioning sleeve 701, making it impossible for the user to pull out the movable column directly. The user needs to press down to deform the snap-fitting portion 406 in order to pull out the movable column 4, thereby avoiding incorrect operation.

[0073] Further, an auxiliary spring 706 is fixedly arranged inside the cavity. One end of the auxiliary spring 706 is connected with a stop block 707. First abutting blocks 708 are arranged on both sides of the stop block 707. Second abutting blocks 407 are arranged on both sides inside the movable column 4. The stop block 707 can be pushed into the movable column 4 by the auxiliary spring 706, and the first abutting blocks 708 abut against the second abutting blocks 407 to make the stop block 707 continue to move into the movable column 4.

[0074] The elastic force of the auxiliary spring 706 continues to push the stop block 707, so that the stop block 707 pushes the movable column 4 outwards. However, the movable column 4 is blocked by the second positioning ball 704, and the thrust of the stop block 707 is not enough to move the movable column 4. But when the user manually pulls the movable column 4 to adjust the front-back distance of the headrest 3, the movable column 4 can be pulled more easily with the addition of the thrust of the stop block 707.

[0075] At the same time, the auxiliary spring 706 and the stop block 707 apply an outward pushing force to the movable column 4, increasing the force required for the movable column 4 to move towards the mounting bracket 1, and preventing the headrest 3 from moving backwards when the user leans on the headrest 3.

[0076] As Figures 1-2 and Figures 13-16 shown, preferably, the headrest seat 5 includes a fixing plate 501 arranged inside the front headrest 301 and the rear headrest 302. The rear headrest 302 is provided with a mounting groove for the fixing plate 501 to be fixedly connected with the front headrest 301; a groove body 502 is formed on the fixing plate 501, an installation plate 503 is fixedly arranged inside the groove body 502, a catching block 401 is arranged on one side of the movable column 4, outer convex parts 504 are arranged on both sides of the installation plate 503, and a plug-in part 402 matched with the outer convex parts 504 is formed on one side of the catching block 401, so that the installation plate 503 and the catching block 401 are inserted in alignment; a row of first positioning holes 505 are evenly arranged on one side of the installation plate 503 facing the catching block 401. Four first positioning springs 403 arranged in a square shape are arranged inside the catching block 401. First positioning balls 404 with the same diameter as the first positioning holes 505 are connected to the first positioning springs 403, and through holes for the first positioning balls 404 to enter and exit are formed on the plug-in part.

[0077] When using the utility model, by moving the whole headrest 3 up and down, the headrest 3 drives the fixing plate 501, so that the fixing plate 501 drives the installation plate 503 fixedly arranged inside the groove body 502. Through the outer convex parts 504 and the plug-in parts 402, the installation plate 503 moves up and down inside the catching block 401, and the catching block 401 buckles the outer convex parts 504 through the plug-in parts 402 (as Figure 8 shown).

[0078] During the up and down movement, when the first positioning hole 505 formed on one side of the mounting plate 503 moves, it pushes the first positioning ball 404 for positioning, causing the first positioning ball 404 to retract into the inside of the gripping block 401 and compressing the first positioning spring 403, enabling the mounting plate 503 to move up and down. When a set of first positioning holes 505 on the mounting plate 503 is released from the position locking of the first positioning ball 404, when the next set of first positioning holes 505 on the mounting plate 503 moves to the position of the first positioning ball 404, the first positioning spring 403 uses its elastic restoring force to push the first positioning ball 404 outwards, causing the first positioning ball 404 to catch the first positioning hole 505, thereby holding the position of the mounting plate 503, that is, fixing the height position of the headrest 3. At this time, the user needs to apply a thrust again to change the height position of the headrest 3. By providing multiple rows of first positioning holes 505 on the mounting plate 503, multi-stage adjustment of the height position of the headrest 3 can be achieved, so as to adapt the present utility model to users of different heights.

[0079] As Figures 1-2 and Figures 17-18 shown, preferably, the rotating mechanism 6 includes fixing sleeves 601 connected to both sides of the headrest base 5. A rotating sleeve 602 is provided on the lower side of the fixing sleeve 601. A headrest side seat 603 is fixedly connected to the outside of the rotating sleeve 602. Two opposing arc-shaped plates 604 are provided inside the fixing sleeve 601. The arc-shaped plates 604 are fixedly connected to the rotating sleeve 602. A plurality of arc-shaped grooves 605 are formed on the inner side surface of the fixing sleeve 601 and are evenly arranged in a ring shape. Arc-shaped protrusions 606 that are matched and docked with the arc-shaped grooves 605 are provided on the arc-shaped plates 604. A fixing ring 607 is provided inside the fixing sleeve 601. Limiting openings 608 are formed on both sides of the fixing ring 607. A return spring 609 is provided between the two arc-shaped plates 604. The return spring 609 is used to make the arc-shaped protrusions 606 pass through the limiting openings 608 and snap into the arc-shaped grooves 605. Two bent annular grooves 305 are formed on the headrest 3.

[0080] Specifically, when using the utility model, the two ends of the pillow 3 can be rotated inward or outward. The two bending annular grooves 305 provided on the pillow 3 are used to provide bending points when the two ends of the pillow 3 are bent. When rotating, the pillow side seat 603 wrapped by the front pillow 301 and the rear pillow 302 will be driven. The pillow side seat 603 drives the rotating sleeve 602 and drives the two arc plates 604 to rotate inside the fixed sleeve 601. The two arc plates 604 drive the arc protrusion 606, and the arc protrusion 606 is initially fixed with the arc groove 605. As the two arc plates 604 continue to drive the arc protrusion 606 to rotate, and the limiting openings 608 provided on both sides of the fixing ring 607 limit the position of the arc protrusion 606, bolts are used to fix the fixing ring 607 and the rotating ring 607. The sleeve 602 is fixedly connected so that when rotating, the arc-shaped protrusion 606 is pushed inside the arc-shaped groove 605 and retracts inward, and squeezes the return spring 609, so that the pillow side seat 603 drives the two ends of the pillow 3 to rotate inward and outward. When rotating to the next arc-shaped groove 605, the return spring 609 uses the elastic restoring force to limit the arc plates 604 and the arc-shaped protrusion 606 on both sides out of the limit opening 608, so that the arc-shaped protrusion 606 is again stuck in the arc-shaped groove 605, thereby fixing the angles of the two ends of the pillow 3, and at the same time the user will feel a jam. If it is necessary to continue to adjust the rotation angle, force can be applied again to continue adjusting, thereby completing the adjustment of the angles of the two ends of the pillow 3. When the user needs to lean sideways, it can be achieved by adjusting the angles of the two sides of the pillow 3.

[0081] like Figures 1-2 As shown, preferably, a mounting block 8 is provided on a side of the mounting frame 1 away from the headrest 3 , the mounting block 8 is connected to a fixed arm 801 , a ball head connector 802 is provided on the fixed arm 801 , and a splint 803 is provided on the ball head connector 802 .

[0082] When the driver and passenger use the headrest 3, the mounting frame 1 is connected to the fixed arm 801 via the assembly block 8, and the fixed arm 801 is connected to the clamping plate 803 via the ball head connector 802, so that the person in the back seat can place the viewing device on the clamping plate 803 and fix it, and it can also be used as a hanging bag.

[0083] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An adjustable head support device, characterized in that: It includes a mounting frame, a mounting clamp and a backrest, and the seat pillar is clamped and fixed by the mounting frame and the mounting clamp; The mounting frame is provided with a movable column toward a portion of the mounting clamping plate, the movable column is provided with a pillow seat, and both sides of the pillow seat are provided with a rotating mechanism for rotating the two ends of the pillow; An adjustment mechanism is provided between the mounting frame and the movable column, the adjustment mechanism comprises a cavity provided inside the mounting frame for the movable column to move, a positioning sleeve through which the movable column can pass is provided in the cavity, a plurality of positioning notches are formed at the four corners of the movable column, and second positioning holes are provided at the four corners of the positioning sleeve; Second positioning springs are fixedly arranged at four places on the inner wall of the cavity, and a second positioning ball is connected to the second positioning spring, and the second positioning ball passes through the second positioning hole and is inserted into the positioning notch; The inner wall of the positioning sleeve is formed with a clamping portion, and the movable column is formed with a clamping portion by opening two wire grooves; An auxiliary spring is fixedly arranged in the cavity, one end of the auxiliary spring is connected to a stop block, first stop blocks are arranged on both sides of the stop block, and second stop blocks are arranged on both sides of the movable column.

2. The adjustable head support device according to claim 1, characterized in that: The mounting frame and the mounting clamping plate are both formed with a half-clamping groove a and a half-clamping groove b on the side facing each other, and the half-clamping groove a and the half-clamping groove b constitute a pillar clamping groove. Connecting bolts are provided at both ends of the mounting frame, and nuts are fixed on the connecting bolts. The nuts are located on a side of the mounting frame away from the mounting clamping plate. Nuts are provided at both ends of the mounting clamping plate. The connecting bolts and the nuts are connected and fixed by screwing the nuts, so that the half-clamping groove a and the half-clamping groove b clamp the seat pillar.

3. The adjustable head support device according to claim 2, characterized in that: The opposite sides of the half-clamping groove a and the half-clamping groove b are both provided with a first anti-slip portion and a second anti-slip portion.

4. The adjustable head support device according to claim 1, characterized in that: The backrest pillow comprises a front backrest pillow and a rear backrest pillow, the front backrest pillow and the rear backrest pillow are combined to form a backrest pillow, the front backrest pillow and the rear backrest pillow are wrapped with pillowcases, and two massage heads are installed on the front backrest pillow.

5. The adjustable head support device according to claim 4, characterized in that: The pillow seat includes a fixing plate arranged inside the front pillow and the rear pillow, and the rear pillow is provided with a mounting groove for fixing the fixing plate and the front pillow; A groove is formed on the fixed plate, a mounting plate is fixed inside the groove, a gripping block is provided on one side of the movable column, convex parts are provided on both sides of the mounting plate, and a plug-in part used in conjunction with the convex part is formed on one side of the gripping block, so that the mounting plate and the gripping block are aligned and plugged; The mounting plate is provided with first positioning holes evenly arranged in two rows on one side facing the grab block, the grab block has four first positioning springs arranged in a square shape built in, the first positioning spring is connected to a first positioning ball having the same diameter as the first positioning hole, and the plug-in portion is provided with a through hole for the first positioning ball to enter and exit.

6. The adjustable head support device according to claim 4, characterized in that: The rotating mechanism comprises a fixed sleeve connected to both sides of the pillow seat, a rotating sleeve is provided on the lower side of the fixed sleeve, a pillow side seat is fixedly connected to the outside of the rotating sleeve, two opposing arc plates are provided inside the fixed sleeve, the arc plates are fixedly connected to the rotating sleeve, a plurality of arc grooves evenly arranged in an annular shape are formed on the inner side of the fixed sleeve, and an arc convex block matching and docking with the arc grooves is provided on the arc plate; The fixing sleeve is provided with a fixing ring, and two sides of the fixing ring are provided with limited openings; A return spring is arranged between the two arc-shaped plates, and the return spring is used to make the arc-shaped protrusion pass through the limiting opening and be clamped into the arc-shaped groove; Two bent annular grooves are formed on the pillow.

7. The adjustable head support device according to claim 1, characterized in that: A mounting block is provided on a side of the mounting frame away from the headrest. The mounting block is connected to a fixing arm. A ball head connector is provided on the fixing arm. A clamp is provided on the ball head connector.

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