Head adjustment mechanism for folding beds

Abstract

To provide a head adjustment structure for a folding bed which is easy to adjust and highly comfortable. [Solution] A head adjustment structure for a folding bed comprising a foldable bed frame 1 provided with a flexible bed surface 2, the bed frame having a mounting frame 12 for attaching the flexible bed surface, the mounting frame fixing a connecting rod 3 extending downward, the mounting frame providing a rotatable support rod 4, the flexible bed surface having a locking member for controlling the relative fixation between the mounting frame and the connecting rod, and by controlling the relative movement between the first slide sleeve 5 and the connecting rod, the support rod and the bed frame (1) can be rotated relative to each other, and the inclination angle of the headrest portion 22 can be adjusted.

Description

[Technical Field]

[0001] This utility model belongs to the technical field of folding beds, and particularly relates to a head adjustment structure for folding beds. [Background technology]

[0002] Folding beds, also known as lunch beds or folding recliners, are simple beds designed using the principle of joints and can be folded in various ways for convenience and space saving.

[0003] The folding bed with mattress disclosed in Chinese Utility Model Patent CN202222791175.1 comprises a bed frame and a mattress, and between the bed frame and the mattress, both ends of the head frame and the middle frame are hinged respectively, and support feet are hinged to the bottom of the middle frame and the foot frame, the angle-adjustable frame is rotatable relative to the head frame, and the angle-adjustable frame is provided with a plurality of gears, and the locking member is locked to one of the gears so that the head frame can be supported upward and form an angle with the middle frame.

[0004] In the above structure, the tilt angle of the head frame is adjusted by combining the clap member with different gears. However, when the head frame is subjected to force and flipped upward, the clap member comes off the gear, and then the head frame rotates freely with the intermediate frame and flips downward unexpectedly, which is likely to cause injury to the user and is inconvenient for the user. Summary of the Invention [Means for solving the problem]

[0005] The present invention aims to overcome the drawbacks of the prior art by providing a head adjustment structure for a folding bed that is easy to adjust and highly comfortable.

[0006] The object of this utility model is achieved as follows: A flexible bed surface is provided on the foldable bed frame, and by controlling the relative movement between the first sliding sleeve and the connecting rod on the flexible bed frame, the support rod and the bed frame can be rotated relative to each other, and the tilt angle of the headrest part can be adjusted.

[0007] Furthermore, the support rod is rotatably connected to the mounting frame via a hinge rod, and the support rod on the hinge rod side is bent upward to form the support arm, which is connected to the headrest portion.

[0008] Furthermore, the first slide sleeve is slidably arranged on the connecting rod, a dial groove is provided on the support rod, a dial lever that fits the dial groove is provided on the first slide sleeve, the first slide sleeve is controlled to slide on the connecting rod, and the dial lever drives the support rod to swing via the dial groove, thereby adjusting the tilt angle of the headrest portion.

[0009] Furthermore, the first sliding sleeve is provided with a guide hole that fits the connecting rod, and the locking member is a buckle that is movably mounted on the connecting rod, and the buckle abuts against the guide hole to fix the first sliding sleeve and the connecting rod relative to each other, and the buckle moves relative to the first sliding sleeve when an external force is applied, allowing the first sliding sleeve and the connecting rod to slide relative to each other.

[0010] Furthermore, an inclined drive surface is provided at each of the upper and lower ends of the guide hole, and the drive surface abuts against the buckle to drive and displace the buckle, thereby allowing the buckle to pass through the guide hole.

[0011] Furthermore, the locking member is a locking lever slidably arranged on the first sliding sleeve, and the first sliding sleeve is provided with an elastic member that drives the locking lever to engage with the connecting lever. When an external force is applied, the locking rod moves relative to the connecting rod, allowing the first sliding sleeve and the connecting rod to slide relative to each other.

[0012] Furthermore, the slide sleeve is provided with a locking groove, which is formed inwardly in an elliptical shape along the edge of the slide sleeve, and in an initial state, the locking groove is engaged with the lock pin.

[0013] Furthermore, the bed frame has a plurality of support legs for supporting the mounting frame, and support pads are provided at the lower ends of the connecting rods, and the support pads are provided so as to be flush with the lower ends of the support legs, so that the connecting rods can support the mounting frame together with the support legs.

[0014] The utility model further provides that the support legs include two rod bodies hinged in an X shape, the mounting frame includes a plurality of side rods that can be folded relatively, the side rods are provided with connecting seats, and the upper ends of the rod bodies are respectively rotatably connected to the connecting seats, the support legs are rotatably arranged with second sliding sleeves, the second sliding sleeves are slidably connected to the connecting rods, and the connecting rods are provided with limit position blocks, which can control the deployment of the bed frame and cause the second sliding sleeves to abut against the limit blocks, thereby fixing the sliding sleeves relative to the connecting rods.

[0015] Furthermore, a first slot is provided in the headrest portion, and an end of the support rod is inserted into the first slot. A second slot is provided at one end of the main body portion away from the headrest portion, and one end of the mounting frame away from the support rod is inserted into the second slot.

[0016] Furthermore, the bed frame has two mounting frames connected to either side of the main body, the two mounting frames are provided with connecting rods and support rods, and a foldable folding unit is provided between the support rods of the two mounting frames, the folding unit has two link rods hinged in an X shape, the upper sides of the two link rods are respectively connected to the mounting frames or the support rods, and the folding unit supports the support rods and prevents the support rods from coming close to each other. [Effects of the Invention]

[0017] The present utility model has the following advantages over the prior art: 1. In this utility model, the different positions at which the first sliding sleeve is fixed to the connecting rod are controlled by a locking member, thereby controlling the tilt angle of the support rod and therefore the tilt angle of the headrest section. This simple structure makes it easy for the user to adjust and control the position. In addition, the support rod and the mounting frame are rotatably connected, and the first sliding sleeve and the headrest section are respectively positioned on the upper and lower sides of the mounting frame.

[0018] 2. The upwardly bent support arm in this utility model is advantageous in that the headrest part is always tilted upward, increasing the maximum tilt angle of the headrest part during use and making it more convenient for the user. The dial groove and dial lever have a simple structure, which is convenient for production and processing. Moreover, the dial groove can compensate for the horizontal displacement during the rotation of the support lever, which is convenient for the flexible movement of the first sliding seat and the support lever.

[0019] 3. The guide hole in this utility model facilitates stable connection between the first sliding sleeve and the connecting rod, and the buckle structure is simple, making it convenient for production and installation. The buckle can fix the first sliding sleeve and the connecting rod relative to each other through friction or a clasp mechanism, allowing the user to adjust the tilt angle of the support rod and adjust the control. The drive surface allows the buckle to easily pass through the guide hole and easily engage with the guide hole, making it convenient for use. The locking rod and elastic member structure is simple, making it convenient for production and installation. The locking rod can fix the first sliding sleeve and the connecting rod relative to each other through friction or a clasp mechanism, allowing the user to easily adjust the tilt angle of the support rod and adjust the control.

[0020] 4. In this utility model, the connecting rod and the support leg jointly support the mounting frame, which not only reduces the force on the support leg and prevents damage to the support leg caused by excessive force, but also benefits the stable installation of the connecting rod, preventing it from tilting due to excessive force on the support rod and extending the service life of the folding bed. The installation of the connecting seat is beneficial for the stable installation of the connecting rod and improves the structural strength of the folding bed. The installation of the limiting block facilitates the relative positioning of the second sliding sleeve and the support leg during the unfolding process of the folding bed, which is beneficial for the connecting rod and support leg jointly support the mounting frame and prevents the connecting rod from being subjected to excessive force due to the hanging of the support leg during use.

[0021] 5. The installation structure of the first and second slots in this utility model is simple, making it easy to remove and install the flexible bed surface, and this structure facilitates stable installation of the flexible bed surface, preventing the flexible bed surface from detaching from the headrest part and the mounting hole during use. The installation of the folding unit facilitates stable unfolding of the folding bed, preventing the flexible bed surface from pulling the two mounting frames and support rods closer together during use. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. 1 is a diagram illustrating a state in which the first embodiment of the present utility model is used. [Figure 2] FIG. 2 is a second diagram showing the state of use of the first embodiment of the present utility model. [Figure 3] 1 is a schematic diagram of an explosion of a bed frame in accordance with the first embodiment of the present invention. [Figure 4] FIG. 1 is a partial cross-sectional view of a first embodiment of the present utility model. [Figure 5] 1 is a schematic structural diagram of a support leg in the first embodiment of the present utility model. [Figure 6] 1 is a schematic diagram of a mounting frame according to a first embodiment of the present invention. FIG. [Figure 7] 1 is a structural schematic diagram of a flexible bed surface in the first embodiment of the present invention. [Figure 8] 2 is a second schematic diagram of the structure of the flexible bed surface in the first embodiment of the present utility model. [Figure 9] 1 is a schematic structural diagram of a connecting rod according to a first embodiment of the present invention. [Figure 10] 1 is a schematic structural diagram of a support rod according to a first embodiment of the present invention. [Figure 11] 1 is a schematic structural diagram of a first slide sleeve in the first embodiment of the present utility model. [Figure 12] FIG. 2 is a partial cross-sectional view of a second embodiment of the present utility model. [Figure 13] FIG. 10 is a schematic configuration diagram of a first slide sleeve in a second embodiment of the present utility model. [Explanation of symbols]

[0023] 1-bed frame; 11-support leg; 12-mounting frame; 13-folding part; 14-second slip sleeve; 111-rod body; 121-side lever; 122-connecting seat; 2-flexible bed surface; 21-body part; 22-headrest part; 23-second slot; 24-first slot; 3-connecting rod; 31-support pad; 32-limit block; 33-flush buckle; 34-positioning groove; 4-support rod; 41-drive part; 42-support arm; 43-hinge lever; 44-dial groove; 5-first slip sleeve; 51-pilot hole; 52-card slot; 53-drive surface; 54-dial lever; 55-chute; 56-elastic member; 57-snap lever; 521-tapered side wall; 561-diaphragm DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, specific embodiments of the present invention will be further described with reference to the accompanying drawings.

[0025] The head adjustment structure for a folding bed shown in Figures 1 to 13 has a flexible bed surface 2, a mounting frame 12 to which the flexible bed surface 2 is attached, a connecting rod 3 extending downward is fixed, a support rod 4 is rotatably provided, a main body 21 connected to the support rod 4, and a headrest 22 connected to the support rod 4. By controlling the relative movement between the first sliding sleeve 5 and the connecting lever 3, the support lever 4 and the bed frame 1 can be rotated relatively, and the tilt angle of the headrest 22 can be adjusted, and by fixing the first sliding sleeve 5 to the connecting lever 3 via a locking member, the tilt of the support lever 4 can be greatly controlled, and the tilt angle of the headrest 22 can be adjusted.

[0026] The locking member can be fixed to the connecting rod 3 by a hoop structure, or the locking member can be fixed directly to the connecting rod 3 by a clutch structure or other fastener, and the present utility model shows the following two embodiments.

[0027] (Embodiment 1) In this embodiment, the first sliding sleeve 5 is provided with a guide hole 51 that fits the connecting rod 3, and the locking member is a buckle 33 that is movably mounted on the connecting rod 3. The buckle 33 abuts against the guide hole 51 to fix the first sliding sleeve 5 and the connecting rod 3 relative to each other, and the first sliding sleeve 5 and the connecting rod 3 can be slid relative to each other by the action of an external force.

[0028] An inclined driving surface 53 is provided at each of the upper and lower ends of the guide hole 51, which can come into contact with the buckle 33 to displace it. The buckle 33 can be passed through the guide hole 51, and the buckle 33 can be passed through the guide hole 51, easily connecting and fitting the buckle 33 to the guide hole 51. There is no need to control the displacement of the buckle 33 during this process, making it easy for the user to use.

[0029] In this embodiment, at least two locking members are provided in the extension direction of the connecting rod 3, and the locking members are buckles 33 movably provided on the connecting rod 3, and the buckles 33 on the first sliding sleeve 5 can be released from the locking members by the action of an external force, allowing the first sliding sleeve 5 and the connecting rod 3 to slide relative to each other.

[0030] In this embodiment, a clutch groove 52 is provided on the side wall of the guide hole 51, and a tapered side wall 521 is provided at one end of the clutch groove 52 near the guide hole 51. The tapered side wall 521 guides the buckle 33, allowing the buckle 33 to be quickly fitted into the clutch groove 52.

[0031] (Embodiment 2) The locking member is a locking lever 57 slidably mounted on the first sliding sleeve 5. The first sliding sleeve 5 is provided with an elastic member 56 that engages the locking lever 57 with the connecting lever 3. When an external force is applied, the locking lever 57 can move relative to the connecting rod 3, allowing the first sliding sleeve 5 and the connecting rod 3 to slide relative to each other. The structure of the locking lever 57 and the elastic member 56 is simple, making production and installation easy. The locking lever 57 can fix the first sliding sleeve 5 and the connecting rod 3 relative to each other through friction or a locking structure. The tilt angle of the support rod 4 can be easily adjusted, and the control can be adjusted.

[0032] In this embodiment, at least two positioning grooves 34 are provided in the extending direction of the connecting rod 3, and the locking member is a locking rod 57 slidably disposed in the first sliding sleeve 5. The first sliding sleeve 5 is provided with an elastic member 56 that fits the locking rod 57 into the positioning groove 34, and the fitting between the locking rod 57 and the positioning groove 34 varies the inclination angle of the headrest portion 22. The locking lever 57 can be released from the positioning groove 34 by the application of an external force, and the structure of the locking lever 57 and the elastic member 56 is simple, facilitating production and installation. This structure is advantageous for reducing the number of locking members and facilitating assembly production.

[0033] The first sliding sleeve 5 described in this embodiment is provided with a chute groove 55, and a restrictor 561 that communicates with the guide hole 51 is provided at one end of the chute groove 55. The restrictor 561 is inserted into the guide hole 51 and engages with the positioning groove 34, and the restrictor 561 prevents the first sliding sleeve 5 from being separated from the chute groove 55.

[0034] In both of the above-described embodiments, the connecting rod 3 and the first sliding sleeve 5 are fixed relative to each other by a cut structure, but the main difference is that a locking member is provided on the connecting rod 3 or the first sliding sleeve 5.

[0035] In this utility model, the support lever 4 is rotatably connected to the mounting frame 12 via the hinge lever 43, and the support lever 4 on the hinge lever 43 side is bent upward to form the support arm 42, which is connected to the headrest portion 22. The bent support arm 42 always tilts the headrest portion 22 upward, thereby increasing the maximum tilt angle of the headrest portion 22 when in use and making it easier for the user to use.

[0036] In this utility model, the first slide sleeve 5 is slidably positioned on the connecting rod 3, a dial groove 44 is provided on the support rod 4, and a dial lever 54 that fits the dial groove 44 is provided.The first slide sleeve 5 is slid onto the connecting rod 3, and the dial lever 54 drives the swing of the support rod 4 through the dial groove 44, thereby adjusting the tilt angle of the headrest portion 22.

[0037] The side of the support lever 4 away from the support arm 42 is the drive unit 41, a dial groove 44 is provided in the drive unit 41, the first slide sleeve 5 is connected to the drive unit 41, the support lever 4 can be rotated by the drive unit 41, and it is preferable that the distance between the dial groove 44 and the hinge lever 43 is greater than the length of the support arm 42.

[0038] The bed frame 1 has a plurality of support legs 11 that support the mounting frame 12, and a support pad 31 is provided at the lower end of the connecting rod 3, which is flush with the lower end of the support legs 11 and can support the mounting frame 12, and the connecting rod 3 is flush with the lower end of the support legs 11 and can support the mounting frame 12.

[0039] In this utility model, the support leg 11 has two rod bodies 111 hinged in an X shape, the mounting frame 12 has a number of side rods 121 that can be folded relatively, the side rods 121 are provided with connecting seats 122, and the upper ends of the rod bodies 111 are respectively rotatably connected to the connecting seats 122, the support leg 11 is rotatably provided with a second sliding sleeve 14, the second sliding sleeve 14 is slidably connected to the connecting rod 3, and the connecting rod 3 is provided with a limiting block 32, which controls the unfolding of the bed frame 1 and allows the second sliding sleeve 14 to abut against the limiting block 32 to be fixed relatively to the connecting rod 3, which is advantageous for the stable installation of the connecting rod 3 and improves the structural strength of the folding bed, the installation of the limiting block 32 positions the second sliding sleeve 14 and the support leg 11 relative to each other during the unfolding of the folding bed, and the connecting rod 3 and the support leg 11 can jointly support the mounting frame 12, so that the support leg 11 will not float up and apply excessive force to the connecting rod 3 during use.

[0040] A first slot 24 is provided in the headrest portion 22, and the end of the support rod 4 is inserted into the first slot 24. A second slot 23 is provided at one end of the main body portion 21 away from the headrest portion 22, and one end of the mounting frame 12 away from the support rod 4 is inserted into the second slot 23. The installation structure of the first slot 24 and the second slot 23 is simple, the flexible bed surface 2 is easy to remove and install, and the flexible bed surface 2 will not come off the headrest portion 22 and the mounting hole during use.

[0041] The bed frame 1 in this utility model has two mounting frames 12 connected to both sides of the main body 21, and each mounting frame 12 is provided with a connecting rod 3 and a support rod 4, and a foldable folding unit 13 is provided between the support rods 4 of both mounting frames 12, and the folding unit 13 is provided on the upper side of both mounting frames 12 or support rods 4 to prevent the connecting frames 12 or support rods 4 from approaching each other.

[0042] The above embodiments are merely preferred embodiments of the present utility model and do not limit the scope of protection of the present utility model, and all equivalent modifications made according to the structure, shape, and principle of the present utility model shall be included within the scope of protection of the present utility model.

Claims

1. A head adjustment structure for a folding bed, comprising: a foldable bed frame (1) provided with a flexible bed surface (2); a mounting frame (12) for mounting the flexible bed surface (2); a connecting rod (3) extending downward; a support rod (4) rotatably provided; and a locking member for controlling the relative fixation of the connecting frame (12) and the connecting rod (3) on the flexible bed surface (2). By controlling the relative movement of the first slide sleeve (5) and the connecting rod (3), the support rod (4) and the bed frame (1) can be rotated relative to each other, and the tilt angle of the headrest portion (22) can be adjusted.

2. 2. The head adjustment structure for a folding bed according to claim 1, wherein the support rod (4) is rotatably connected to the mounting frame (12) via the hinge rod (43), the support rod (4) on the hinge rod (43) side is bent upward to form the support arm (42), and the support arm (42) is connected to the headrest portion (22).

3. 2. The head adjustment structure for a folding bed according to claim 1, wherein the first slide sleeve (5) is slidably disposed on the connecting lever (3), the support lever (4) is provided with a dial lever (54) that fits into a dial groove (44), the first slide sleeve (5) is controlled to slide on the connecting lever (3), and the dial lever (54) swings the support lever (4) via the dial groove (44), thereby adjusting the tilt angle of the headrest portion (22).

4. 2. The head adjustment structure for a folding bed according to claim 1, wherein the first sliding sleeve (5) is provided with a guide hole (51) that fits the connecting rod (3), the locking member is a buckle (33) that is movably provided on the connecting rod (3), the buckle (33) abuts against the guide hole (51) to fix the first sliding sleeve (5) and the connecting rod (3) relatively, and the buckle (33) can be moved relatively by an external force.

5. 5. A head adjustment structure for a folding bed as described in claim 4, characterized in that an inclined drive surface (53) is provided at each of the upper and lower ends of the guide hole (51), and the drive surface (53) abuts against the buckle (33) to displace the buckle (33), thereby allowing the buckle (33) to pass through the guide hole (51).

6. 2. The head adjustment structure for a folding bed according to claim 1, wherein the locking member is a locking lever (57) slidably arranged on the first sliding sleeve (5), and the first sliding sleeve (5) is provided with an elastic member (56) that drives the locking lever (57) to engage with the connecting lever (3), and wherein the locking lever (57) is movable relative to the connecting lever (3) when an external force is applied, causing the first sliding sleeve (5) and the connecting lever (3) to slide relative to each other.

7. The head adjustment structure for a folding bed as described in claim 1, characterized in that the bed frame (1) has a plurality of support legs (11) that support the mounting frame (12), and a support pad (31) is provided at the lower end of the connecting rod (3), which is flush with the lower end of the support legs (11) so that the connecting rod (3) can support the mounting frame (12) at the same level as the lower end of the support legs (11).

8. 8. The head adjustment structure for a folding bed according to claim 7, wherein the support leg (11) comprises two rod bodies (111) hinged in an X-shape, the mounting frame (12) comprises a plurality of side rods (121) that can be folded relatively, the side rods (121) are provided with connecting seats (122), and the upper ends of the rod bodies (111) are respectively rotatably connected, a second sliding sleeve (14) is rotatably provided on the support leg (11), the second sliding sleeve (14) is slidably connected to a connecting rod (3), and a limit block (32) is provided on the connecting rod (3), which controls the deployment of the bed frame (1), and the second sliding sleeve (14) can abut against the limit block (32), and the sliding sleeve is fixed relatively to the connecting rod (3).

9. 2. The head adjustment structure for a folding bed according to claim 1, wherein a first slot (24) is provided in the headrest portion (22), an end of the support rod (4) is inserted into the first slot (24), one end of the main body portion (21) remote from the headrest portion (22) is provided in a second slot (23), and one end of the mounting frame (12) remote from the support rod (4) is inserted into the second slot (23).

10. 2. The head adjustment structure for a folding bed according to claim 1, wherein the bed frame (1) comprises two mounting frames (12) respectively connected to both sides of the main body (21), the two mounting frames (12) each having a connecting rod (3) and a support rod (4), a foldable folding unit (13) installed between the support rods (4) on the two mounting frames (12), the folding unit (13) comprising two link rods hingedly connected in an X shape, the upper ends of the two link rods being connected to the mounting frames (12) or the support rods (4), respectively, the folding unit (13) supporting the support rods (4) and preventing the support rods (4) from approaching each other.

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