Deck chair with adjustable head

Abstract

The utility model belongs to the technical field of deck chairs, and particularly relates to a deck chair with an adjustable head, which comprises a foldable bedstead, a flexible bed surface is arranged on the bedstead, the bedstead comprises a mounting frame used for mounting the flexible bed surface, a connecting rod extending downwards is fixedly arranged on the mounting frame, a support rod is rotatably arranged on the bedstead, and the flexible bed surface is arranged on the support rod. The flexible bed surface comprises a main body part connected with the mounting frame and a headrest part connected with the supporting rod, one end of the supporting rod extends towards the upper part of the mounting frame and is connected with the headrest part, the other end of the supporting rod is provided with a first sliding sleeve, and the first sliding sleeve is provided with a guide hole in sliding connection with the connecting rod; a locking device is arranged on the first sliding sleeve, the locking device comprises a locking piece and an elastic piece driving the locking piece to reset, the locking device further comprises a control piece movably connected with the locking piece, and the head adjusting structure of the folding bed is convenient to adjust and high in comfort.

Description

Technical Field

[0001] This utility model belongs to the field of recliner technology, and specifically relates to a recliner with an adjustable head. Background Technology

[0002] A folding recliner, also known as a nap bed or folding bed, is a simple bed designed using the principle of joints. It can be folded and stored in various ways to save space and make it convenient.

[0003] Some folding recliners on the market lack a prominent headrest, requiring users to use a pillow. To improve user convenience, some folding beds include an adjustable headrest, such as the folding recliner bed with a mattress disclosed in Chinese Utility Model Patent CN202222791175.1. This bed includes a bed frame and a mattress. The bed frame comprises a headrest, a middle frame, and a footrest. The two ends of the middle frame are hinged to the headrest and footrest, respectively. Support legs are hinged to the bottom of both the middle frame and the footrest. An angle adjustment mechanism is provided between the headrest and the middle frame, allowing both the headrest and the footrest to be rotated. The middle frame is folded in half and pressed together. The head frame, middle frame, and footrest are all fitted with connecting sleeves. The connecting sleeves are connected to the bottom of the mattress, and the connection part between the connecting sleeve and the mattress is offset from the edge of the bottom of the mattress, so that the edge of the mattress forms a convex edge that can float upward relative to the bed frame. The angle adjustment mechanism includes an angle adjustment frame on the head frame and a snap-fit ​​component on the middle frame that cooperates with the angle adjustment frame. The angle adjustment frame can rotate relative to the head frame and has multiple positions. The snap-fit ​​component snaps into one of the positions so that the head frame can be raised to form an angle with the middle frame.

[0004] In the above structure, the tilt angle of the head frame is adjusted by engaging with different positions using a snap-fit ​​mechanism. However, when the head frame is subjected to force and flips upward, the snap-fit ​​mechanism will disengage from the position, and then the head frame will rotate freely with the middle frame and accidentally flip downward, which can easily cause injury to the user and is inconvenient for the user. Furthermore, according to the lever principle, the tilt angle of the head frame varies greatly when the snap-fit ​​mechanism engages with adjacent positions, making it difficult for the user to adjust the head frame to a suitable position, thus affecting the comfort of using the folding bed. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a head adjustment structure for a folding bed that is easy to adjust and highly comfortable.

[0006] The purpose of this utility model is achieved as follows:

[0007] A headrest with adjustable headrest includes a foldable bed frame with a flexible bed surface. The bed frame includes a mounting frame for mounting the flexible bed surface, and a downwardly extending connecting rod is fixedly mounted on the mounting frame. A support rod is rotatably mounted on the bed frame. The flexible bed surface includes a main body connected to the mounting frame and a headrest connected to the support rod. One end of the support rod extends upward toward the mounting frame and is connected to the headrest. The other end of the support rod is provided with a first sliding sleeve, and the first sliding sleeve is provided with a guide hole that is slidably connected to the connecting rod.

[0008] The first sliding sleeve is provided with a locking device, which includes a locking element and an elastic element for driving the locking element to reset. The locking device also includes a control element that is movably connected to the locking element.

[0009] The elastic element drives the locking element to cooperate with the connecting rod, thereby fixing the first sliding sleeve and the connecting rod relatively. The locking element and the connecting rod cooperate at different positions, causing the support rod and the connecting rod to tilt at different angles. The control element can drive the locking element to move and allow the first sliding sleeve to move relative to the connecting rod.

[0010] The present invention is further configured such that: the connecting rod is provided with a positioning hole adapted to the control component, and the end of the control component is provided with an inclined guide surface, so that the control component can be guided by the guide surface and cooperate with the positioning hole.

[0011] The present invention is further configured such that: the locking member is provided with a positioning groove adapted to the side wall of the connecting rod, and a positioning part adapted to the positioning hole extends from the positioning groove.

[0012] The present invention is further configured such that: the locking device includes a mounting base detachably connected to the first sliding sleeve, the mounting base having a constriction, the locking member having a sliding part and a pressing wall, the sliding part being slidably disposed in the constriction, one end of the elastic member abutting against the pressing wall, the other end of the elastic member abutting against the end of the constriction, and the control member being detachably disposed on the sliding part, the elastic member driving the locking member to reset and causing the control member to abut against the mounting base, thereby preventing the locking member from detaching from the mounting base.

[0013] The present invention is further configured such that: the mounting base is provided with a threaded portion, the first sliding sleeve is provided with a threaded hole adapted to the threaded portion, and the mounting base is provided with a control portion with an irregular or polygonal cross section. The control portion can control the rotation of the mounting base, thereby allowing the mounting base to be disassembled or connected to the first sliding sleeve.

[0014] The present invention is further configured such that: the first sliding sleeve is provided with a first sliding cavity communicating with the guide hole, the end of the first sliding cavity away from the guide hole is provided with a limit hole, the locking member is slidably disposed in the first sliding cavity, and the control member is detachably disposed at the end of the locking member, the elastic member drives the locking member to reset and makes the control member abut against the mounting base, thereby preventing the locking member from detaching from the mounting base.

[0015] The present invention is further configured such that: a driving block is slidably disposed on the first sliding sleeve, the sliding direction of the driving block is inclined or perpendicular to the movement direction of the locking member, and the locking member and / or the driving block are provided with an inclined driving surface; the locking member is controlled to slide, and the locking member can be driven to disengage from the connecting rod through the driving surface.

[0016] The present invention is further configured such that: a second sliding cavity is provided on the first sliding sleeve, the driving block is slidably disposed in the second sliding cavity, and a limiting plate is detachably provided on the first sliding sleeve, the limiting plate can abut against the driving block and prevent the driving block from disengaging from the first sliding sleeve; and the elastic element driving the locking element reset can drive the driving block to abut against the limiting plate through the driving surface.

[0017] The present invention is further configured such that: a limiting wall is provided on the locking member, and the driving block can abut against the limiting wall and limit the maximum range of motion of the driving block and the locking member.

[0018] The present invention is further configured such that: a groove is provided on the support rod, and a lever adapted to the groove is provided on the first sliding sleeve, which controls the first sliding sleeve to slide on the connecting rod, and the lever abuts against the side wall of the groove to drive the support rod to swing, thereby adjusting the tilt angle of the headrest.

[0019] The advantages of this utility model compared to the prior art are:

[0020] 1. In this utility model, the connecting rod, mounting frame and support rod form a triangular structure through the locking device, thereby maintaining a specific tilt angle of the headrest. The structure is simple and convenient for users to adjust and control. In addition, the locking element is driven by the elastic element to keep the locking element in cooperation with the connecting rod, which prevents the locking element from accidentally disengaging from the connecting rod during use, making it convenient for users. Furthermore, the locking device uses a control element to control the movement of the locking element, which facilitates flexible driving control of the locking element and makes it convenient for users to drive and control.

[0021] 2. The positioning hole in this utility model has a simple structure, which makes it easy for manufacturers to process the positioning hole flexibly according to their needs. The guide surface facilitates the quick engagement of the control component and the positioning hole, making it convenient for users to quickly adjust and control. The positioning groove facilitates the stable connection between the locking component and the connecting rod, reduces the shaking of the locking component and the connecting rod during use, makes it convenient for users, and this structure can prevent damage to the positioning part, which helps to extend the service life of the recliner.

[0022] 3. The detachable mounting base in this utility model facilitates the quick installation and disassembly of the locking device, which is convenient for the assembly and production of the recliner. Moreover, the locking device can be used as a separate module, and it does not need to be disassembled and reassembled during the disassembly and installation of the recliner, which is convenient for the assembly and production of the recliner. The design of the constriction and the limiting wall facilitates the stable installation of the locking part and the elastic part. The control part can not only control the movement of the locking part, but also prevent the locking part from accidentally detaching from the mounting base. The threaded part, threaded hole and control part facilitate the disassembly and installation of the locking device, which is convenient for the assembly and production of the recliner.

[0023] 4. In this utility model, the locking component is directly slidably mounted on the first sliding sleeve. The control component in this structure can not only control the movement of the locking component, but also facilitate the stable installation of the locking component and the first sliding sleeve. The structure is simple and easy to manufacture. The slot and lever have simple structures and are easy to manufacture. The slot can compensate for the horizontal displacement of the support rod during rotation, which facilitates the flexible movement of the first sliding block and the support rod.

[0024] 5. In this utility model, the drive block controls the movement of the locking component through an inclined drive surface, which helps to change the direction of force applied by the user when controlling the locking component, making it easier for the user to control flexibly; the detachable limiting plate not only facilitates the stable installation of the drive block, but also limits the range of motion of the drive block, with a simple structure and convenient production and processing; the setting of the limiting wall can limit the range of motion of the drive block, making it convenient for the user to control, and this structure can prevent the user from applying excessive force during use, making it convenient for the user to control the drive block for a long time. Attached Figure Description

[0025] Figure 1 This is one of the usage state diagrams of Embodiment 1 of this utility model;

[0026] Figure 2 This is the second usage state diagram of Embodiment 1 of this utility model;

[0027] Figure 3 This is an exploded view of the bed frame in Embodiment 1 of this utility model;

[0028] Figure 4 This is a partial cross-sectional view of Embodiment 1 of this utility model;

[0029] Figure 5 This is a cross-sectional view of the first sliding sleeve in Embodiment 1 of this utility model;

[0030] Figure 6 This is a cross-sectional view of the locking device in Embodiment 1 of this utility model;

[0031] Figure 7 This is a schematic diagram of the support leg in Embodiment 1 of this utility model;

[0032] Figure 8 This is a schematic diagram of the mounting frame in Embodiment 1 of this utility model;

[0033] Figure 9 This is one of the structural schematic diagrams of the flexible bed surface in Embodiment 1 of this utility model;

[0034] Figure 10 This is the second schematic diagram of the flexible bed surface in Embodiment 1 of this utility model;

[0035] Figure 11 This is a schematic diagram of the connecting rod in Embodiment 1 of this utility model;

[0036] Figure 12 This is a schematic diagram of the support rod in Embodiment 1 of this utility model;

[0037] Figure 13 This is a partial cross-sectional view of Embodiment 2 of this utility model;

[0038] Figure 14 This is a partial cross-sectional view of the connection structure between the locking device and the first sliding sleeve in Embodiment 2 of this utility model;

[0039] Figure 15 This is a schematic diagram of the structure of the first sliding sleeve in Embodiment 2 of this utility model;

[0040] Figure 16 This is a schematic diagram of the connection structure between the locking component and the control component in Embodiment 2 of this utility model. The meanings of the numbers in the diagram are as follows: 1-bed frame; 11-support leg; 12-mounting frame; 13-folding unit; 14-second sliding sleeve; 111-rod; 121-side rod; 122-connecting seat; 2-flexible bed surface; 21-main body; 22-headrest; 23-second slot; 24-first slot; 3-connecting rod; 31-support pad; 32-limiting block; 33-positioning hole; 4-support rod; 41-drive part; 42-support arm; 43-hinge rod; 44-groove; 5-first sliding sleeve; 51-guide hole; 52-threaded hole; 53-lever; 54-first sliding cavity; 55-second sliding cavity;

[0041] 56-Limiting plate; 541-Limiting hole; 6-Locking device; 61-Locking component; 62-Elastic component; 63-Control component; 64-Mounting base; 65-Drive block; 611-Guide surface; 612-Positioning groove; 613-Drive surface; 614-Positioning part; 615-Sliding part; 616-Abutting wall; 641-Mounting cavity; 642-Reduction opening; 643-Threaded part; 644-Control part; 651-Control protrusion. Detailed Implementation

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0043] See Figures 1 to 16 As shown, a recliner with an adjustable headrest includes a foldable bed frame 1 with a flexible bed surface 2. The bed frame 1 includes a mounting frame 12 for mounting the flexible bed surface 2, and a downwardly extending connecting rod 3 is fixedly mounted on the mounting frame 12. A support rod 4 is rotatably mounted on the bed frame 1. The flexible bed surface 2 includes a main body 21 connected to the mounting frame 12 and a headrest 22 connected to the support rod 4. One end of the support rod 4 extends upward toward the mounting frame 12 and connects to the headrest 22. The other end of the support rod 4 is provided with a first sliding sleeve 5, which has a guide hole 51 that is slidably connected to the connecting rod 3. A locking device 6 is provided on the first sliding sleeve 5. The structure includes a locking element 61 and an elastic element 62 that drives the locking element 61 to reset. The elastic element 62 drives the locking element 61 to cooperate with the connecting rod 3, thereby fixing the first sliding sleeve 5 and the connecting rod 3 relatively. The locking element 61 and the connecting rod 3 cooperate at different positions, so that the support rod 4 and the connecting rod 3 have different tilt angles. In this structure, the locking device 6 makes the connecting rod 3, the mounting frame 12 and the support rod 4 form a triangular structure, thereby keeping the headrest 22 at a specific tilt angle. The structure is simple and convenient for users to adjust and control. In addition, the elastic element 62 drives the locking element 61 to cooperate with the connecting rod 3, preventing the locking element 61 from accidentally disengaging from the connecting rod 3 during use, which is convenient for users.

[0044] The locking device 6 described in this utility model also includes a control component 63 that is movably connected to the locking component 61. The control component 63 can drive the locking component 61 to move and make the first sliding sleeve 5 move relative to the connecting rod 3. The setting of the control component 63 facilitates the flexible driving control of the locking component 61 and makes it convenient for the user to drive and control it.

[0045] The connecting rod 3 is provided with a positioning hole 33 that is adapted to the control component 63, and the end of the control component 63 is provided with an inclined guide surface 611. The control component 63 can be guided by the guide surface 611 and cooperate with the positioning hole 33. The positioning hole 33 has a simple structure, which makes it easy for the manufacturer to flexibly process the positioning hole 33 as needed. The setting of the guide surface 611 facilitates the quick cooperation between the control component 63 and the positioning hole 33, and makes it convenient for the user to quickly adjust and control.

[0046] Preferably, the locking member 61 is provided with a positioning groove 612 that is adapted to the side wall of the connecting rod 3, and a positioning part 614 that is adapted to the positioning hole 33 extends from the positioning groove 612. The positioning groove 612 is conducive to the stable connection between the locking member 61 and the connecting rod 3, reduces the shaking of the locking member 61 and the connecting rod 3 during use, facilitates the use of the user, and this structure can prevent damage to the positioning part 614, which is conducive to extending the service life of the recliner. In this embodiment, the positioning groove 612 is U-shaped, and the side of the connecting rod 3 passes through the positioning groove 612.

[0047] The locking component 61 of this utility model can be directly slidably mounted on the first sliding sleeve 5. This structure requires other parts to stably install the locking component 61. When the recliner is disassembled and reassembled, the locking device 6 needs to be disassembled and reassembled. Alternatively, the locking device 6 can include a mounting base 64, through which the locking component 61 is mounted on the first sliding sleeve 5. In this case, when the recliner is disassembled and reassembled, the locking device 6 does not need to be disassembled and reassembled. The following are embodiments of these two structures:

[0048] Example 1

[0049] The locking device 6 includes a mounting base 64 detachably connected to the first sliding sleeve 5. The mounting base 64 has a constriction 642. The locking member 61 has a sliding part 615 and a retaining wall 616. The sliding part 615 is slidably disposed in the constriction 642. One end of the elastic member 62 abuts against the retaining wall 616, and the other end of the elastic member 62 abuts against the end of the constriction 642. A control member 63 is detachably disposed on the sliding part 615. The elastic member 62 drives the locking member 61 to reset and causes the control member 63 to abut against the mounting base 64, thereby preventing… The locking element 61 is detached from the mounting base 64. In this structure, the locking device 6 is a separate module. During the disassembly and installation of the recliner, the locking device 6 does not need to be disassembled and reassembled, which facilitates the assembly and production of the recliner. The detachable mounting base 64 facilitates the quick installation and disassembly of the locking device 6, which also facilitates the assembly and production of the recliner. The design of the narrowing 642 and the limiting wall facilitates the stable installation of the locking element 61 and the elastic element 62. The control element 63 can not only control the movement of the locking element 61, but also prevent the locking element 61 from accidentally detaching from the mounting base 64.

[0050] Preferably, a mounting cavity 641 is provided on one side of the constriction 642, and the elastic element 62 is disposed in the mounting cavity 641 and sleeved on the locking element 61.

[0051] In this embodiment, the mounting base 64 is provided with a threaded portion 643, and the first sliding sleeve 5 is provided with a threaded hole 52 that matches the threaded portion 643. The threaded portion 643 and the threaded hole 52 facilitate the disassembly and installation of the locking device 6 and make the assembly and production of the recliner convenient.

[0052] The mounting base 64 is provided with a control part 644 with an irregular or polygonal cross section. The control part 644 can control the rotation of the mounting base 64, thereby allowing the mounting base 64 to be disassembled or connected to the first sliding sleeve 5. The setting of the control part 644 makes it convenient for the user to control the relative rotation of the mounting base 64 and the first sliding sleeve 5, which facilitates the disassembly and installation of the locking device 6. In this embodiment, the irregular shape is non-circular. Preferably, the cross section of the control part 644 is a regular hexagon. This structure makes it convenient for the user to disassemble and install the locking device 6 with a wrench.

[0053] Example 2

[0054] In this embodiment, the first sliding sleeve 5 is provided with a first sliding cavity 54 communicating with the guide hole 51. The end of the first sliding cavity 54 away from the guide hole 51 is provided with a limit hole 541. The locking member 61 is slidably disposed in the first sliding cavity 54, and the control member 63 is detachably disposed at the end of the locking member 61. The elastic member 62 drives the locking member 61 to reset and causes the control member 63 to abut against the mounting base 64, thereby preventing the locking member 61 from disengaging from the mounting base 64. In this structure, the locking member 61 is directly slidably disposed on the first sliding sleeve 5, and the control member 63 can not only control the movement of the locking member 61, but also facilitate the stable installation of the locking member 61 and the first sliding sleeve 5. The structure is simple and convenient for production and processing.

[0055] In this invention, a driving block 65 is slidably disposed on the first sliding sleeve 5. The driving block 65 is provided with an exposed control protrusion 651. The sliding direction of the driving block 65 is inclined or perpendicular to the movement direction of the locking member 61. The locking member 61 and / or the driving block 65 are provided with an inclined driving surface 613. The locking member 61 is controlled to slide. The locking member 61 can be driven to disengage from the connecting rod 3 through the driving surface 613. The driving block 65 controls the movement of the locking member 61 through the inclined driving surface 613, which is beneficial to change the direction of force when the user controls the locking member 61, and facilitates flexible control by the user.

[0056] The first sliding sleeve 5 is provided with a second sliding cavity 55, and the driving block 65 is slidably disposed in the second sliding cavity 55. A limiting plate 56 is detachably disposed on the first sliding sleeve 5. The limiting plate 56 can abut against the driving block 65 and prevent the driving block 65 from detaching from the first sliding sleeve 5. The elastic member 62 drives the locking member 61 to reset, and the driving surface 613 can drive the driving block 65 to abut against the limiting plate 56. The detachable limiting plate 56 not only facilitates the stable installation of the driving block 65, but also limits the range of motion of the driving block 65. The structure is simple and convenient for production and processing.

[0057] Preferably, the locking member 61 is provided with a limiting wall, and the driving block 65 can abut against the limiting wall and limit the maximum range of motion of the driving block 65 and the locking member 61. The setting of the limiting wall can limit the range of motion of the driving block 65, making it convenient for the user to use and control. Moreover, this structure can prevent the user from using too much force during use, making it convenient for the user to control the driving block 65 for a long time.

[0058] In this utility model, the first sliding sleeve 5 is slidably mounted on the connecting rod 3, and the support rod 4 is provided with a groove 44. The first sliding sleeve 5 is provided with a lever 53 that is adapted to the groove 44, which controls the sliding of the first sliding sleeve 5 on the connecting rod 3. The lever 53 drives the support rod 4 to swing through the groove 44, thereby adjusting the tilt angle of the headrest 22. The structure of the groove 44 and the lever 53 is simple and convenient for production and processing. Moreover, the groove 44 can compensate for the horizontal displacement of the support rod 4 during rotation, which facilitates the flexible movement of the first sliding seat and the support rod 4.

[0059] In this invention, the support rod 4 is rotatably connected to the mounting frame 12 via a hinge rod 43. The support rod 4 on one side of the hinge rod 43 is the support arm 42, which is connected to the headrest 22. The side of the support rod 4 away from the support arm 42 is the drive part 41, and a groove 44 is provided on the drive part 41. The first sliding sleeve 5 is connected to the drive part 41 and can drive the support rod 4 to rotate through the drive part 41. Preferably, the distance between the groove 44 and the hinge rod 43 is greater than the length of the support arm 42. This structure can reduce the swing amplitude of the headrest 22 when the first sliding sleeve 5 moves, making it easier to flexibly adjust the headrest 22, convenient for the user, and beneficial to improving the comfort of the folding bed.

[0060] The bed frame 1 includes several support legs 11 for supporting the mounting frame 12. The lower end of the connecting rod 3 is provided with a support pad 31, which can be flush with the lower end of the support leg 11. This allows the connecting rod 3 and the support leg 11 to jointly support the mounting frame 12. Since the connecting rod 3 and the support leg 11 can jointly support the mounting frame 12, it can not only reduce the force on the support leg 11 and avoid damage due to excessive force, but also facilitate the stable installation of the connecting rod 3, prevent the support rod 4 from being overloaded and causing the connecting rod 3 to tilt, and help extend the service life of the folding bed. In this embodiment, multiple connecting rods 3 are provided on the mounting frame 12, and the multiple connecting rods 3 can distribute the force on the support leg 11.

[0061] The support leg 11 of this utility model includes two hinged X-shaped rods 111. The mounting frame 12 includes several foldable side rods 121. A connecting seat 122 is provided on the side rods 121. The upper ends of the rods 111 are rotatably connected to the connecting seat 122. A second sliding sleeve 14 is rotatably provided on the support leg 11. The second sliding sleeve 14 is slidably connected to the connecting rod 3, and a limit block 32 is provided on the connecting rod 3. When the bed frame 1 is unfolded, the second sliding sleeve 14 can abut against the limit block 32 and fix the sliding sleeve and the connecting rod 3 relatively. The setting of the connecting seat 122 is conducive to the stable installation of the connecting rod 3 and improves the structural strength of the folding bed. The setting of the limit block 32 facilitates the relative positioning of the second sliding sleeve 14 and the support leg 11 during the unfolding of the folding bed. It is beneficial to enable the connecting rod 3 and the support leg 11 to jointly support the mounting frame 12 and avoid the support leg 11 being suspended in the air during use, which would cause the connecting rod 3 to be subjected to excessive force.

[0062] The headrest portion 22 is provided with a first slot 24, and the end of the support rod 4 is inserted into the first slot 24. The main body portion 21 is provided with a second slot 23 at the end away from the headrest portion 22, and the mounting frame 12 is inserted into the second slot 23 at the end away from the support rod 4. The arrangement of the first slot 24 and the second slot 23 is simple, which facilitates the disassembly and installation of the flexible bed surface 2. Moreover, this structure facilitates the stable installation of the flexible bed surface 2 and prevents the flexible bed surface 2 from detaching from the headrest portion 22 and the mounting hole during use.

[0063] The bed frame 1 described in this utility model includes two mounting frames 12 respectively connected to both sides of the main body 21. Each mounting frame 12 is provided with a connecting rod 3 and a support rod 4. A foldable folding unit 13 is provided between the support rods 4 on the two mounting frames 12. The folding unit 13 includes two hinged X-shaped connecting rods. The upper side of the two connecting rods is respectively connected to the mounting frame 12 or the support rod 4. The folding unit 13 supports the support rod 4 and prevents the support rods 4 from getting close to each other. The setting of the folding unit 13 facilitates the stable unfolding of the folding bed and prevents the flexible bed surface 2 from pulling the two mounting frames 12 and the support rods 4 close together during use. Multiple folding units 13 are provided between the two mounting frames 12. The folding units 13 are spaced apart to prevent the various parts of the mounting frames 12 from getting close to each other.

[0064] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A headrest with adjustable head, comprising a foldable bed frame (1) and a flexible bed surface (2) provided on the bed frame (1), characterized in that: The bed frame (1) includes a mounting frame (12) for mounting a flexible bed surface (2). A connecting rod (3) extending downward is fixedly mounted on the mounting frame (12). A support rod (4) is rotatably mounted on the bed frame (1). The flexible bed surface (2) includes a main body (21) connected to the mounting frame (12) and a headrest (22) connected to the support rod (4). One end of the support rod (4) extends upward toward the mounting frame (12) and is connected to the headrest (22). The other end of the support rod (4) is provided with a first sliding sleeve (5). The first sliding sleeve (5) is provided with a guide hole (51) that is slidably connected to the connecting rod (3). The first sliding sleeve (5) is provided with a locking device (6), which includes a locking member (61) and an elastic member (62) for driving the locking member (61) to reset. The locking device (6) also includes a control member (63) that is movably connected to the locking member (61). The elastic element (62) drives the locking element (61) to cooperate with the connecting rod (3), thereby fixing the first sliding sleeve (5) and the connecting rod (3) relative to each other. The locking element (61) and the connecting rod (3) cooperate at different positions, so that the support rod (4) and the connecting rod (3) have different tilt angles. The control element (63) can drive the locking element (61) to move and make the first sliding sleeve (5) move relative to the connecting rod (3).

2. The recliner with an adjustable headrest according to claim 1, characterized in that: The connecting rod (3) is provided with a positioning hole (33) that is adapted to the control component (63), and the end of the control component (63) is provided with an inclined guide surface (611). The control component (63) can be guided by the guide surface (611) and cooperate with the positioning hole (33).

3. A recliner with an adjustable headrest according to claim 2, characterized in that: The locking member (61) is provided with a positioning groove (612) that is adapted to the side wall of the connecting rod (3), and a positioning part (614) that is adapted to the positioning hole (33) extends from the positioning groove (612).

4. A recliner with an adjustable headrest according to claim 1, characterized in that: The locking device (6) includes a mounting base (64) detachably connected to the first sliding sleeve (5). The mounting base (64) has a constriction (642). The locking member (61) is provided with a sliding part (615) and a pressing wall (616). The sliding part (615) is slidably disposed in the constriction (642). One end of the elastic member (62) abuts against the pressing wall (616), and the other end of the elastic member (62) abuts against the end of the constriction (642). The control member (63) is detachably disposed on the sliding part (615). The elastic member (62) drives the locking member (61) to reset and causes the control member (63) to abut against the mounting base (64), thereby preventing the locking member (61) from disengaging from the mounting base (64).

5. A recliner with an adjustable headrest according to claim 4, characterized in that: The mounting base (64) is provided with a threaded part (643), the first sliding sleeve (5) is provided with a threaded hole (52) adapted to the threaded part (643), and the mounting base (64) is provided with a control part (644) with an irregular or polygonal cross section. The mounting base (644) can be controlled to rotate through the control part (644), thereby disassembling or connecting the mounting base (64) and the first sliding sleeve (5).

6. A recliner with an adjustable headrest according to claim 1, characterized in that: The first sliding sleeve (5) is provided with a first sliding cavity (54) communicating with the guide hole (51). The first sliding cavity (54) is provided with a limit hole (541) at the end away from the guide hole (51). The locking member (61) is slidably disposed in the first sliding cavity (54), and the control member (63) is detachably disposed at the end of the locking member (61). The elastic member (62) drives the locking member (61) to reset and makes the control member (63) abut against the mounting base (64), thereby preventing the locking member (61) from disengaging from the mounting base (64).

7. A recliner with an adjustable headrest according to claim 1, 2, 3, 4, 5, or 6, characterized in that: A drive block (65) is slidably disposed on the first sliding sleeve (5). The sliding direction of the drive block (65) is inclined or perpendicular to the movement direction of the locking member (61). An inclined drive surface (613) is provided on the locking member (61) and / or the drive block (65). The locking member (61) is controlled to slide, and the locking member (61) can be driven to disengage from the connecting rod (3) through the drive surface (613).

8. A recliner with an adjustable headrest according to claim 7, characterized in that: The first sliding sleeve (5) is provided with a second sliding cavity (55), the driving block (65) is slidably disposed in the second sliding cavity (55), and a limiting plate (56) is detachably disposed on the first sliding sleeve (5). The limiting plate (56) can abut against the driving block (65) and prevent the driving block (65) from disengaging from the first sliding sleeve (5); and the elastic member (62) drives the locking member (61) to reset through the driving surface (613) to drive the driving block (65) to abut against the limiting plate (56).

9. A recliner with an adjustable headrest according to claim 8, characterized in that: The locking member (61) is provided with a limiting wall, and the driving block (65) can abut against the limiting wall and limit the maximum range of motion of the driving block (65) and the locking member (61).

10. A recliner with an adjustable headrest according to any one of claims 1, 2, 3, 4, 5, 6, 8, or 9, characterized in that: The support rod (4) is provided with a groove (44), and the first sliding sleeve (5) is provided with a lever (53) that is adapted to the groove (44). The first sliding sleeve (5) is controlled to slide on the connecting rod (3), and the lever (53) abuts against the side wall of the groove (44) to drive the support rod (4) to swing, thereby adjusting the tilt angle of the headrest (22).

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