Bed capable of being changed into chair

Abstract

The invention belongs to the technical field of chair-changing beds, and particularly relates to a chair-changing bed which comprises a fixed bed frame and a movable bed frame. The head frame body, the hip frame body, the leg frame body and the tail frame body are rotationally connected in sequence, and the head frame body and the hip frame body are both in lap joint with the movable bed frame; the rear extension rod is fixedly arranged at the bottom of the hip frame body, the rear end of the rear extension rod is rotatably connected with the movable bed frame, and the leg frame body is simultaneously lapped on the movable bed frame and the rear extension rod; the two ends of the inclined supporting rod are rotationally connected with the front end of the tail frame body and the fixed bed frame respectively; the rotating stand is rotationally mounted on the movable bed frame, and the tail end of the rotating stand is connected with the leg frame body; the two ends of the first telescopic rod are rotationally connected with the rotating frame and the fixed bed frame respectively; the two ends of the second telescopic rod are rotationally connected with the head frame body and the movable bed frame respectively. The multifunctional wheelchair has the advantages that two powers of the first telescopic rod and the second telescopic rod are utilized, the wheelchair can be switched among four postures of a bed, a chair, standing assistance and leg lifting, the structure is simple, and the effect is outstanding.

Description

Technical Field

[0001] The present invention relates to the technical field of convertible chair beds; specifically, the present invention relates to a convertible chair bed. Background Art

[0002] A convertible chair bed is a bed structure that can be used as a bed and also as a chair, and can adapt to the needs of different human postures after deformation. At present, each function state of the convertible chair bed requires a corresponding motor as a power component for each state function. In the functional expansion of the convertible chair bed, equipping too many motors will bring inconveniences. Summary of the Invention

[0003] In view of this, the present invention provides a convertible chair bed, which realizes the switching of multiple functions by using two power components, thereby solving or at least alleviating the problem that in the prior art, each function state of the convertible chair bed requires a corresponding motor as a power component for each state function.

[0004] To achieve the foregoing object, the present invention provides a convertible chair bed, comprising:

[0005] A fixed bed frame and a movable bed frame;

[0006] A head frame, a hip frame, a leg frame and a tail frame that can form a bed surface and are sequentially rotatably connected, and both the head frame and the hip frame are lapped on the movable bed frame;

[0007] A rear extension rod, fixedly arranged at the bottom of the hip frame, the rear end of the rear extension rod is rotatably connected to the movable bed frame, and the leg frame is simultaneously lapped on the movable bed frame and the rear extension rod;

[0008] A diagonal strut, the two ends of which are respectively rotatably connected to the front end of the tail frame and the fixed bed frame;

[0009] A rotating frame, rotatably installed on the movable bed frame, the tail end of the rotating frame is connected to the leg frame, and the rotating frame can control the front end of the leg frame to swing upward by swinging backward at its rear end;

[0010] A first telescopic rod, the two ends of which are respectively rotatably connected to the rotating frame and the fixed bed frame, and when the rear end of the first telescopic rod retracts, it can control the rear end of the rotating frame to swing upward;

[0011] A second telescopic rod, the two ends of which are respectively rotatably connected to the head frame and the movable bed frame, and when the front end of the second telescopic rod extends, it can control the front end of the head frame to swing upward;

[0012] A connecting frame, arranged between the second telescopic rod and the head frame, and can control the overall backward tilt of the head frame and the hip frame under the action of the second telescopic rod after the front end of the movable bed frame swings upward to the maximum angle relative to the hip frame.

[0013] In a variable chair-bed as described above, optionally, the movable bed frame is displaceably arranged on the fixed bed frame in the front-rear direction, where:

[0014] When the bed surface is in a flat state and the front end of the leg frame is in an upward-swing state, the movable bed frame is located at the extreme position at the front end of the fixed bed frame;

[0015] When the movable bed frame is located at the extreme position at the rear end of the fixed bed frame, the tail frame is in a state where the tail end is inclined downward.

[0016] In a variable chair-bed as described above, optionally, first tracks are provided at the four corners inside the fixed bed frame, and first rollers that displace within the first tracks are provided at the bottom of the movable bed frame.

[0017] In a variable chair-bed as described above, optionally, the rotating frame includes:

[0018] A shaft body part, whose two ends are rotatably connected to the movable bed frame;

[0019] A hinge plate, fixedly arranged on the shaft body part, and one end of the first telescopic rod is rotatably connected to the hinge plate;

[0020] A rotating arm, fixedly arranged on the shaft body part, and the rotating arm is in a state where the rear end is inclined upward, and the rear end of the rotating arm is connected to the leg frame.

[0021] In a variable chair-bed as described above, optionally, a second track is provided at the bottom of the leg frame, and second rollers that displace within the second track are provided at the rear end of the rotating arm.

[0022] In a variable chair-bed as described above, optionally, there are two rotating arms, and the two rotating arms are symmetrically distributed on both sides of the shaft body part.

[0023] In a variable chair-bed as described above, optionally, the connecting frame includes:

[0024] A fixed part, which is fixedly installed at the bottom of the front end of the hip frame;

[0025] A rotating part, which is rotatably installed on the fixed part, the rotating part is in a state where the bottom end is inclined backward, the top end of the rotating part is fixedly connected to the head frame, and the front end of the second telescopic rod is rotatably connected to the bottom end of the rotating part;

[0026] A limiting part, which is fixedly installed at the front end of the fixed part and is located on the front side of the rotating part. When the head frame swings upward relative to the hip frame to the maximum angle, the front side surface of the rotating part contacts the limiting part.

[0027] In a variable chair-bed as described above, optionally, one diagonal brace is provided on each side of the tail frame, and the diagonal brace is located outside the fixed bed frame in the width direction.

[0028] In a variable chair-bed as described above, optionally, both the first telescopic rod and the second telescopic rod are electric telescopic rods.

[0029] The variable chair-bed of the present invention can switch between four postures: bed, chair, assisted sitting up, and leg lifting, by using the two power sources of the first telescopic rod and the second telescopic rod, and has a simple structure and outstanding effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Referring to the accompanying drawings, the disclosure of the present invention will become more apparent. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the figures:

[0031] Figure 1 is a schematic structural diagram of the variable chair-bed of the present invention;

[0032] Figure 2 is of the present invention Figure 1 bottom view;

[0033] Figure 3 is of the present invention Figure 2 enlarged view at A in;

[0034] Figure 4 is of the present invention Figure 2 enlarged view at B in;

[0035] Figure 5 is of the present invention Figure 1 schematic diagram after hiding the hip frame in;

[0036] Figure 6 is of the present invention Figure 1 schematic diagram after hiding the bed surface in;

[0037] Figure 7 is a schematic diagram of the variable chair-bed of the present invention in the chair state;

[0038] Figure 8 is of the variable chair-bed of the present invention in Figure 7 schematic diagram of the state after the leg frame is lifted up in.

[0039] Reference numerals: 1 - fixed bed frame; 2 - movable bed frame; 3 - head frame; 4 - hip frame; 5 - leg frame; 6 - tail frame; 7 - extension rod; 8 - diagonal brace; 9 - rotating frame; 9.1 - shaft body part; 9.2 - hinge plate; 9.3 - rotating arm; 10 - first telescopic rod; 11 - second telescopic rod; 12 - connecting frame; 12.1 - fixed part; 12.2 - rotating part; 12.3 - limiting part; 13, first track; 14, first roller; 15, second track; 16, second roller. Detailed implementation mode

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below. 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.

[0041] As Figures 1 to 8 shown, a variable chair-bed provided in this embodiment includes a fixed bed frame 1, a movable bed frame 2, a head frame 3, a hip frame 4, a leg frame 5 and a tail frame 6 that can form a bed surface, as well as an extension rod 7, a diagonal brace 8, a rotating frame 9, a first telescopic rod 10, a second telescopic rod 11 and a connecting frame 12. Both the first telescopic rod 10 and the second telescopic rod 11 are electric telescopic rods.

[0042] The head frame 3, the hip frame 4, the leg frame 5 and the tail frame 6 are sequentially rotatably connected, and both the head frame 3 and the hip frame 4 are lapped on the movable bed frame 2. The two ends of the diagonal brace 8 are respectively rotatably connected to the front end of the tail frame 6 and the fixed bed frame 1, and are used to support the tail frame 6 in a straight state.

[0043] The extension rod 7 is fixedly arranged at the bottom of the hip frame 4. Specifically, in this embodiment, one extension rod 7 is arranged on each side of the bottom of the hip frame 4, and the two extension rods 7 are respectively arranged close to the inner walls on both sides of the movable bed frame 2. The rear end of the extension rod 7 is rotatably connected to the movable bed frame 2, and the leg frame 5 is simultaneously lapped on the movable bed frame 2 and the extension rod 7, so that the leg frame 5 is supported in a straight state.

[0044] The rotating frame 9 is rotatably installed on the movable bed frame 2. The tail end of the rotating frame 9 is connected to the leg frame 5. The rotating frame 9 can control the front end of the leg frame 5 to swing upward by swinging backward at its rear end. When the front end of the leg frame 5 swings upward, the legs of the human body can be lifted. During this process, the tail frame 6 swings upward at the front end with the top of the diagonal brace as the fulcrum.

[0045] Both ends of the first telescopic rod 10 are rotatably connected to the rotating frame 9 and the fixed bed frame 1 respectively. Specifically, in this embodiment, the rear end of the first telescopic rod 10 is the extended end. When the rear end of the first telescopic rod 10 retracts, it can control the rear end of the rotating frame 9 to swing upward, thereby providing power for the swing of the leg frame 5.

[0046] Both ends of the second telescopic rod 11 are rotatably connected to the head frame 3 and the movable bed frame 2 respectively. Specifically, in this embodiment, the front end of the second telescopic rod 11 is the extended end. When the front end of the second telescopic rod 11 extends, it can control the front end of the head frame 3 to swing upward. After the front end of the head frame 3 swings upward, it can support the back and head of the human body when the human body is in a sitting position.

[0047] The connecting frame 12 is arranged between the second telescopic rod 11 and the head frame 3. After the front end of the movable bed frame 2 swings upward to the maximum angle relative to the hip frame 4, it can control the overall backward tilt of the head frame 3, the hip frame 4 and the leg frame 5 under the action of the second telescopic rod 11. At this time, it can make the person in a sitting position tilt backward, ensuring that the feet touch the ground first when the person gets up, so as to achieve the function of assisting in getting up.

[0048] The movable bed frame 2 is displaceably arranged on the fixed bed frame 1 in the front-rear direction, wherein:

[0049] When the bed surface is in a flat state and the front end of the leg frame 5 is in an upward swing state, the movable bed frame 2 is located at the limit position at the front end of the fixed bed frame 1;

[0050] When the movable bed frame 2 is located at the limit position at the rear end of the fixed bed frame 1, the tail frame 6 is in a state where the tail end is inclined downward.

[0051] In a relatively specific embodiment for realizing that the movable bed frame 2 can be displaceably arranged on the fixed bed frame 1, first tracks 13 are arranged at the four corners inside the fixed bed frame 1, and first rollers 14 for displacement in the first tracks 13 are arranged at the bottom of the movable bed frame 2.

[0052] In a relatively specific embodiment for realizing that the rotating frame 9 controls the swing of the leg frame 5 through rotation, the rotating frame 9 includes:

[0053] A shaft body part 9.1, both ends of which are rotatably connected to the movable bed frame 2;

[0054] A hinge plate 9.2, fixedly arranged on the shaft body part 9.1, and one end of the first telescopic rod 10 is rotatably connected to the hinge plate 9.2;

[0055] A rotating arm 9.3, fixedly arranged on the shaft body part 9.1, and the rotating arm 9.3 is in a state where the rear end is inclined upward, and the rear end of the rotating arm 9.3 is connected to the leg frame 5.

[0056] When the extending end of the first telescopic rod 10 moves, it drives the rotation of the shaft body part 9.1 through the hinge plate 9.2. The shaft body part 9.1 drives the swing of the swing arm 9.3. Furthermore, the swing of the leg frame body 5 is controlled by using the swing arm 9.3.

[0057] In a relatively specific embodiment for realizing the connection between the rotating frame 9 and the leg frame body 5, a second track 15 is provided at the bottom of the leg frame body 5, and a second roller 16 that displaces within the second track 15 is provided at the rear end of the swing arm 9.3. During the swing of the leg frame body 5, the second roller 16 displaces within the second track 15.

[0058] In a relatively specific embodiment, two swing arms 9.3 are provided, and the two swing arms 9.3 are symmetrically distributed on both sides of the shaft body part 9.1. It can improve the balance of the leg frame body 5 and the stability of the support for the human body.

[0059] As a relatively specific embodiment of the connecting frame 12, the connecting frame 12 includes:

[0060] A fixed part 12.1, which is fixedly installed at the bottom of the front end of the hip frame body 4;

[0061] A rotating part 12.2, which is rotatably installed on the fixed part 12.1. The rotating part 12.2 is in a state where the bottom end inclines backward. The top end of the rotating part 12.2 is fixedly connected to the head frame body 3, and the front end of the second telescopic rod 11 is rotatably connected to the bottom end of the rotating part 12.2;

[0062] A limiting part 12.3, which is fixedly installed at the front end of the fixed part 12.1 and is located on the front side of the rotating part 12.2. When the head frame body 3 swings upward relative to the hip frame body 4 to the maximum angle, the front side surface of the rotating part 12.2 contacts the limiting part 12.3.

[0063] After the front side surface of the rotating part 12.2 contacts the limiting part 12.3, as the rear end of the second telescopic rod 11 continues to extend, the acting force will be applied to the hip frame body 4 through the limiting part 12.3. Finally, the head frame body 3, the hip frame body 4, and the leg frame body 5 are tilted backward as a whole.

[0064] One stay bar 8 is provided on each side of the tail frame body 6, and the stay bar 8 is located outside the fixed bed frame 1 in the width direction. The rotation of the stay bar 8 is not interfered by the fixed bed frame 1. During the process of the hip frame body 4, the head frame body 3, and the leg frame body 5 tilting backward as a whole, the stay bar 8 swings downward through the top end to make the leg frame body 5.

[0065] This embodiment has the following working process:

[0066] First, in the initial state, the movable bed frame 2 is located at the front end limit position on the fixed bed frame 1. The head frame 3, the hip frame 4, the leg frame 5, and the tail frame 6 are on the same plane to form a bed surface, and this state is the state of the convertible chair-bed used as a bed.

[0067] Second, by retracting the extended end of the first telescopic rod 10 backward, the tail end of the leg bed frame is swung upward by the rotation of the rotating frame 9, and the tail bed frame will move with the front end swinging upward and the tail end swinging downward under the action of the diagonal brace 8. Then, by extending the extended end of the second telescopic rod 11 forward, the front end of the head frame 3 is swung upward, and a person can be adjusted from a lying position to a sitting position with the legs bent upward.

[0068] Third, by extending the extended end of the first telescopic rod 10 backward, the movable frame is pushed backward to the rear end limit position. At this time, the tail frame 6 swings downward at the rear end under its own weight and is in a vertical state. By extending the extended end of the second telescopic rod 11 forward, the front end of the head frame 3 is swung upward, and a person can be adjusted from a lying position to a sitting position. Then, as the extended end of the second telescopic rod 11 continues to extend forward, the head frame 3, the hip frame 4, and the leg frame 5 are tilted backward as a whole by using the connecting frame 12, which can help a person in a sitting position stand from the convertible chair-bed to the ground, achieving the effect of assisting in getting up.

[0069] The technical scope of the present invention is not limited to the content in the above specification. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the scope of the present invention.

Claims

1. A chair-bed, characterized in that: include: A fixed bed frame (1) and a movable bed frame (2); A head frame (3), a buttocks frame (4), a leg frame (5) and a tail frame (6) that can form a bed surface and are rotatably connected in sequence, wherein the head frame (3) and the buttocks frame (4) are both overlapped on the movable bed frame (2); A rear extension rod (7) is fixedly arranged at the bottom of the buttocks frame (4), the rear end of the rear extension rod (7) is rotatably connected to the movable bed frame (2), and the leg frame (5) is simultaneously overlapped on the movable bed frame (2) and the rear extension rod (7); The two ends of the diagonal support rod (8) are rotatably connected to the front end of the tail frame (6) and the fixed bed frame (1) respectively; A rotating frame (9) is rotatably mounted on the movable bed frame (2), wherein the rear end of the rotating frame (9) is connected to the leg frame (5), and the rotating frame (9) can control the front end of the leg frame (5) to swing upward by swinging its rear end backward; A first telescopic rod (10), both ends of which are rotatably connected to the rotating frame (9) and the fixed bed frame (1), and when the rear end of the first telescopic rod (10) is retracted, the rear end of the rotating frame (9) can be controlled to swing upward; A second telescopic rod (11), both ends of which are rotatably connected to the head frame (3) and the movable bed frame (2), and when the front end of the second telescopic rod (11) is extended, the front end of the head frame (3) can be controlled to swing upward; The connecting frame (12) is arranged between the second telescopic rod (11) and the head frame (3), and after the front end of the movable bed frame (2) is swung up to a maximum angle relative to the hip frame (4), the head frame (3) and the hip frame (4) can be controlled to tilt backward as a whole under the action of the second telescopic rod (11).

2. The chair-convertible bed according to claim 1, characterized in that: The movable bed frame (2) is arranged on the fixed bed frame (1) so as to be displaceable in the front-rear direction, wherein: When the bed surface is in a straight state and the front end of the leg frame (5) is in an upward swing state, the movable bed frame (2) is located at the extreme position of the front end of the fixed bed frame (1); When the movable bed frame (2) is located at the extreme position at the rear end of the fixed bed frame (1), the rear frame body (6) is in a state where the rear end is tilted downward.

3. The chair-convertible bed according to claim 2, characterized in that: The four corners inside the fixed bed frame (1) are all provided with first tracks (13), and the bottom of the movable bed frame (2) is provided with a first roller (14) that moves within the first track (13).

4. The chair-convertible bed according to claim 1, characterized in that: The rotating frame (9) comprises: The shaft body part (9.1) has two ends rotatably connected to the movable bed frame (2); A hinged plate (9.2) is fixedly arranged on the shaft body part (9.1), and one end of the first telescopic rod (10) is rotatably connected to the hinged plate (9.2); The rotating arm (9.3) is fixedly arranged on the shaft body part (9.1), and the rear end of the rotating arm (9.3) is in a state of being tilted upward, and the rear end of the rotating arm (9.3) is connected to the leg frame body (5).

5. The chair-convertible bed according to claim 4, characterized in that: A second track (15) is arranged at the bottom of the leg frame (5), and a second roller (16) which moves within the second track (15) is arranged at the rear end of the rotating arm (9.3).

6. The chair-convertible bed according to claim 4, characterized in that: Two rotating arms (9.3) are provided, and the two rotating arms (9.3) are symmetrically distributed on both sides of the shaft body part (9.1).

7. The chair-convertible bed according to claim 1, characterized in that: The connecting frame (12) comprises: A fixed part (12.1) which is fixedly mounted on the bottom of the front end of the hip frame (4); A rotating part (12.2) is rotatably mounted on the fixed part (12.1), the rotating part (12.2) is in a state where the bottom end thereof is tilted backwards, the top end of the rotating part (12.2) is fixedly connected to the head frame (3), and the front end of the second telescopic rod (11) is rotatably connected to the bottom end of the rotating part (12.2); The limiting part (12.3) is fixedly mounted on the front end of the fixed part (12.1) and is located on the front side of the rotating part (12.2); when the head frame (3) is swung up to a maximum angle relative to the hip frame (4), the front side of the rotating part (12.2) contacts the limiting part (12.3).

8. The chair-convertible bed according to claim 1, characterized in that: The diagonal support rod (8) is arranged on both sides of the tail frame (6), and the diagonal support rod (8) is located outside the fixed bed frame (1) in the width direction.

9. The chair-convertible bed according to claim 1, characterized in that: The first telescopic rod (10) and the second telescopic rod (11) are both electric telescopic rods.

Images