Adjustable angle folding bed

Abstract

The application discloses an angle-adjustable folding bed, which comprises a bed bottom, the bed bottom comprises a front lower frame and a rear lower frame, the rear end of the front lower frame is rotationally connected with the front end of the rear lower frame, and the bed further comprises a back adjusting assembly arranged on the front lower frame and / or a leg adjusting assembly arranged on the rear lower frame. Compared with the prior art, the angle-adjustable folding bed has the advantages of small overall size, no need of installing a bed leg, and the ability of adjusting the angle, so that the bed is convenient to store and transport and the comfort is improved.

Description

Technical Field

[0001] This invention relates to the field of folding bed technology, and in particular to an adjustable angle folding bed. Background Technology

[0002] Folding beds are a widely used type of bed, with their headboard and footboard connected by a hinge. By folding the headboard and footboard in half, the overall length of the bed can be reduced, facilitating storage and transportation. However, in order to reduce overall volume, folding beds generally have a simple structure, cannot flexibly adjust the angle of the headboard and footboard, and lack comfort. Summary of the Invention

[0003] The purpose of this invention is to provide an adjustable-angle folding bed that improves comfort while facilitating storage and transportation.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] The present invention discloses an adjustable angle folding bed, including a bed base, the bed base including a front lower frame and a rear lower frame, the rear end of the front lower frame being rotatably connected to the front end of the rear lower frame, and further including a back adjustment component disposed on the front lower frame and / or a leg adjustment component disposed on the rear lower frame.

[0006] Preferably, the back adjustment assembly includes an upper frame A, a front driver, a front sliding bracket, and a front linkage assembly; the rear end of the upper frame A is rotatably connected to the lower front frame; the front driver is mounted on the lower front frame and connected to the front sliding bracket; the front sliding bracket is slidably mounted on the lower front frame to slide along the front-rear direction of the lower front frame under the drive of the front driver; the front linkage assembly is connected to the upper frame A and the front sliding bracket respectively to drive the upper frame A to swing when the front sliding bracket slides.

[0007] Preferably, the front linkage assembly includes a first link, a second link, a third link, a fourth link, and a fifth link; the first end of the first link is rotatably connected to the front sliding frame, the second end of the first link is equipped with a roller, the middle part of the first link is rotatably connected to the first end of the second link, the second end of the second link is rotatably connected to the first end of the third link, the second end of the third link is rotatably connected to the first end of the fourth link, the second end of the fourth link is rotatably connected to the front lower frame, the first end of the fifth link is rotatably connected to the front sliding frame, the second end of the fifth link is rotatably connected to the upper frame A, the middle part of the fifth link is rotatably connected to the middle part of the third link, the first link is provided with a limiting rivet, and the second link is provided with a groove for limiting and abutting against the limiting rivet.

[0008] Preferably, the leg adjustment assembly includes an upper frame B, an upper frame C, a pull rod, a rear driver, a rear sliding frame, and a rear connecting rod assembly; the upper frame B, the upper frame C, the pull rod, and the lower rear frame are rotatably connected in sequence to form a quadrilateral linkage mechanism; the rear driver is mounted on the lower rear frame and connected to the rear sliding frame; the rear sliding frame is slidably mounted on the lower rear frame to move along the front-rear direction of the lower rear frame under the drive of the rear driver; the rear connecting rod assembly is connected to the upper frame B and the rear sliding frame respectively to drive the upper frame B to swing when the rear sliding frame slides.

[0009] Preferably, the rear linkage assembly includes a sixth linkage, a roller, and a seventh linkage; the first end of the sixth linkage is rotatably connected to the lower rear frame, the roller is rotatably mounted on the second end of the sixth linkage, the roller is in rolling contact with the upper frame B, the first end of the seventh linkage is rotatably connected to the rear sliding frame, and the second end of the seventh linkage is rotatably connected to the middle part of the sixth linkage.

[0010] Preferably, it also includes a guardrail, which is detachably plugged into the upper frame C.

[0011] Preferably, the lower surfaces of both the front lower frame and the rear lower frame are designed to be in direct contact with the ground.

[0012] Preferably, the front lower frame and the rear lower frame are indirectly rotatably connected through an intermediate component; the rear end of the front lower frame is hinged to the front end of the intermediate component, and the rear end of the intermediate component is hinged to the front end of the rear lower frame.

[0013] Preferably, when the bed base, the backrest adjustment assembly, and the leg adjustment assembly are all folded, the thickness of the adjustable angle folding bed is no more than 100mm.

[0014] Preferably, when the bed base is unfolded, the back adjustment assembly is folded, and the leg adjustment assembly is folded, the thickness of the adjustable angle folding bed is no more than 50mm.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] The adjustable-angle folding bed of the present invention has both folding and angle adjustment functions, thereby facilitating storage and transportation while improving comfort. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 Side view of the adjustable-angle folding bed when the bed base, backrest adjustment assembly, and leg adjustment assembly are all folded;

[0019] Figure 2 A side view of the adjustable-angle folding bed when the bed base is unfolded, the back adjustment assembly is folded, and the leg adjustment assembly is folded.

[0020] Figure 3 An axonometric drawing of an adjustable-angle folding bed when the bed base, backrest adjustment assembly, and leg adjustment assembly are all folded.

[0021] Figure 4 An axonometric drawing of an adjustable-angle folding bed with the bed base, backrest adjustment assembly, and leg adjustment assembly all unfolded.

[0022] Figure 5 This is a side view of the adjustable-angle folding bed when the bed base, backrest adjustment assembly, and leg adjustment assembly are all unfolded.

[0023] Figure 6 A top view of the adjustable-angle folding bed when the bed base is unfolded, the back adjustment assembly is folded, and the leg adjustment assembly is folded.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100° adjustable folding bed;

[0026] 10. Bed bottom; 11. Front bottom frame; 12. Back bottom frame;

[0027] 20 Rear adjustment assembly; 21 Upper frame A; 22 Front driver; 23 Front sliding frame; 24 Front linkage assembly; 241 First link; 242 Second link; 243 Third link; 244 Fourth link; 245 Fifth link; 246 Roller; 247 Limiting rivet;

[0028] 30 Leg adjustment assembly; 31 Upper frame B; 32 Upper frame C; 33 Pull rod; 34 Rear drive; 35 Rear sliding frame; 36 Rear linkage assembly; 361 Sixth link; 362 Roller; 363 Seventh link;

[0029] 40 guardrails;

[0030] 50 Middleware. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] The purpose of this invention is to provide an adjustable-angle folding bed that improves comfort while facilitating storage and transportation.

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] In this embodiment, the unfolded state of the bed base 10 refers to the state of the bed base 10 when the front lower frame 11 and the rear lower frame 12 are coplanar, which is the usage state of the adjustable angle folding bed 100. The folded state of the bed base 10 refers to the state of the bed base 10 when the front lower frame 11 and the rear lower frame 12 are stacked. This state can be obtained by rotating the front lower frame 11 or the rear lower frame 12 180° in the unfolded state, which is the storage and transportation state of the adjustable angle folding bed 100.

[0035] "Front" refers to the side closer to the head of the bed when the bed base 10 is in the unfolded state, and "back" refers to the side closer to the foot of the bed when the bed base 10 is in the unfolded state.

[0036] The folded state of the back adjustment component 20 refers to the state of the back adjustment component 20 when the upper frame A21 and the lower front frame 11 are stacked, in which the upper frame A21 and the lower front frame 11 are parallel or approximately parallel. The unfolded state of the back adjustment component 20 refers to the state of the back adjustment component 20 when the front end of the upper frame A21 is a certain distance away from the lower front frame 11, in which the upper frame A21 is tilted relative to the lower front frame 11.

[0037] The folded state of the leg adjustment component 30 refers to the state in which both the upper frame B31 and the upper frame C32 are stacked on the lower rear frame 12, and in this state, both the upper frame B31 and the upper frame C32 are parallel or approximately parallel to the lower rear frame 12. The unfolded state of the leg adjustment component 30 refers to the state of the leg adjustment component 30 when the upper frame B31 is tilted relative to the lower rear frame 12 and the upper frame C32 is a certain distance away from the lower rear frame 12.

[0038] Reference Figures 1-6This embodiment provides an adjustable-angle folding bed 100, including a bed base 10. The bed base 10 includes a front lower frame 11 and a rear lower frame 12, with the rear end of the front lower frame 11 rotatably connected to the front end of the rear lower frame 12. The adjustable-angle folding bed 100 also includes a backrest adjustment assembly 20 disposed on the front lower frame 11 and / or a leg adjustment assembly 30 disposed on the rear lower frame 12. The adjustable-angle folding bed 100 of this embodiment has both folding and angle adjustment functions, thereby facilitating storage and transportation while improving comfort.

[0039] As a possible example, in this embodiment, the backrest adjustment assembly 20 includes an upper frame A21, a front driver 22, a front sliding frame 23, and a front linkage assembly 24. The rear end of the upper frame A21 is rotatably connected to the lower front frame 11, and after the backrest adjustment assembly 20 is unfolded, the upper frame A21 is used for the user to lean back. The front driver 22 is mounted on the lower front frame 11 and connected to the front sliding frame 23, and is used to drive the front sliding frame 23 to slide. The front sliding frame 23 is slidably mounted on the lower front frame 11 to slide along the front-rear direction of the lower front frame 11 under the drive of the front driver 22. The front linkage assembly 24 is connected to the upper frame A21 and the front sliding frame 23 respectively, so as to drive the upper frame A21 to swing when the front sliding frame 23 slides.

[0040] Since the front sliding bracket 23 slides along the front lower frame 11 in the front-rear direction, the front driver 22 and the front sliding bracket 23 can be located inside the front lower frame 11 (meaning they are surrounded by the front lower frame 11), thus avoiding an increase in overall thickness due to the installation of the front driver 22 and the front sliding bracket 23. The shape of the front linkage assembly 24 can change to reduce its size accordingly when the rear adjustment assembly 20 is in the folded state.

[0041] As a possible example, in this embodiment, the front linkage assembly 24 includes a first link 241, a second link 242, a third link 243, a fourth link 244, and a fifth link 245. The first end of the first link 241 is rotatably connected to the front sliding frame 23, and a roller 246 is mounted on the second end of the first link 241. The middle portion of the first link 241 is rotatably connected to the first end of the second link 242, and the second end of the second link 242 is rotatably connected to the first end of the third link 243 (rotatable connection position is...). Figure 5 Point C), the second end of the third link 243 is rotatably connected to the first end of the fourth link 244 (rotatable connection position is...). Figure 5 Point A), the second end of the fourth link 244 is rotatably connected to the lower front frame 11, the first end of the fifth link 245 is rotatably connected to the front sliding frame 23, the second end of the fifth link 245 is rotatably connected to the upper frame A21, and the middle part of the fifth link 245 is rotatably connected to the middle part of the third link 243 (rotatable connection position is...). Figure 5(Point B in the middle). The first link 241 is provided with a limiting rivet 247, and the second link 242 is provided with a groove for abutting against the limiting rivet 247. By adjusting the position of the front sliding frame 23, the position and angle of the fifth link 245 can be adjusted accordingly, thereby causing the upper frame A21 to swing. When the back adjustment assembly 20 is in the folded state, the first end of the first link 241 is furthest from the second end of the fourth link 244, and the overall structure composed of the first link 241, the second link 242, the third link 243, and the fourth link 244 is approximately flattened, and all or most of this overall structure is located inside the front lower frame 11 to reduce the overall size. When the back adjustment assembly 20 is in the unfolded state, the first end of the first link 241 is closest to the second end of the fourth link 244, and the first link 241, the second link 242, the third link 243, and the fourth link 244 all move to the upper side of the front lower frame 11.

[0042] Specifically, as the back adjustment component 20 gradually unfolds from its folded state, the movement is divided into the following stages:

[0043] Phase 1 of the movement: The front drive 22 pushes the front sliding frame 23 to slide backward, and the front sliding frame 23 drives the front end of the first connecting rod 241 to slide backward, causing the first connecting rod 241 to rotate relative to the second connecting rod 242 until the limiting rivet 247 on the first connecting rod 241 is engaged with the groove of the second connecting rod 242. During this process, the roller 246 installed at the second end of the first connecting rod 241 will roll into contact with the upper frame A21, causing the upper frame A21 to rotate at a certain angle (e.g., 10°).

[0044] Phase 2 of the movement: After the limiting rivet 247 abuts against the groove on the edge of the second connecting rod 242, the second connecting rod 242 and the first connecting rod 241 are relatively fixed. At this time, the front sliding frame 23 continues to slide backward, driving the fifth connecting rod 245 to move, which in turn drives the upper frame A21 to rotate. During this phase, the roller 246 separates from the upper frame A21. Figure 5 The three rotational connection positions on the third link 243 are A, B, and C. It is readily apparent to those skilled in the art that the upper frame A21 presses down on the fifth link 245, and the fifth link 245 presses down on the third link 243, meaning the upper frame A21 indirectly presses down on the third link 243. Simultaneously, the first link 241 raises the second link 242, and the second link 242 raises the third link 243, meaning the first link 241 indirectly raises the third link 243. With point A as the center of rotation, the point of application of the force exerted by the fifth link 245 on the third link 243 is point B, and the point of application of the force exerted by the second link 242 on the third link 243 is point C. Figure 5In the diagram, the torque exerted by the fifth link 245 on the third link 243 is approximately equal to the distance between points A and B, and the torque exerted by the second link 242 on the third link 243 is approximately equal to the distance between points A and C. Clearly, the distance between points A and C is greater than the distance between points A and B; therefore, according to the lever theorem, this structure can save effort.

[0045] As a possible example, in this embodiment, the leg adjustment assembly 30 includes an upper frame B31, an upper frame C32, a pull rod 33, a rear actuator 34, a rear sliding frame 35, and a rear linkage assembly 36. When the leg adjustment assembly 30 is deployed, the upper frame B31 supports the user's thigh, and the upper frame C32 supports the user's lower leg. The upper frame B31, upper frame C32, pull rod 33, and rear lower frame 12 are sequentially rotatably connected to form a quadrilateral linkage mechanism. The rear actuator 34 is mounted on the rear lower frame 12 and connected to the rear sliding frame 35, driving the rear sliding frame 35 to slide. The rear sliding frame 35 is slidably mounted on the rear lower frame 12 to move along the front-rear direction of the rear lower frame 12 under the drive of the rear actuator 34. The rear linkage assembly 36 is connected to the upper frame B31 and the rear sliding frame 35 respectively, causing the upper frame B31 to swing when the rear sliding frame 35 slides.

[0046] Since the rear sliding bracket 35 slides along the front-rear direction of the rear lower frame 12, the rear actuator 34 and the rear sliding bracket 35 can be located inside the rear lower frame 12 (meaning they are surrounded by the rear lower frame 12), thus avoiding an increase in overall thickness due to the installation of the rear actuator 34 and the rear sliding bracket 35. The shape of the rear linkage assembly 36 can change to reduce its size accordingly when the leg adjustment assembly 30 is in the folded state.

[0047] As a possible example, in this embodiment, the rear linkage assembly 36 includes a sixth link 361, a roller 362, and a seventh link 363. The first end of the sixth link 361 is rotatably connected to the lower rear frame 12, the roller 362 is rotatably mounted on the second end of the sixth link 361, and the roller 362 rolls in contact with the upper frame B31. The first end of the seventh link 363 is rotatably connected to the rear sliding frame 35, and the second end of the seventh link 363 is rotatably connected to the middle of the sixth link 361. By adjusting the position of the rear sliding frame 35, the angle of the sixth link 361 can be adjusted accordingly, thereby causing the upper frame B31 to swing. Since the upper frame B31, upper frame C32, pull rod 33, and lower rear frame 12 form a quadrilateral linkage mechanism, when the upper frame B31 swings, the upper frame C32 also moves accordingly. When the leg adjustment assembly 30 is in the folded state, the first end of the sixth link 361 is furthest from the first end of the seventh link 363. The overall structure formed by the sixth link 361 and the seventh link 363 is approximately flattened, and all or most of this overall structure is located inside the rear lower frame 12 to reduce the overall size. When the leg adjustment assembly 30 is in the unfolded state, the first end of the sixth link 361 is closest to the first end of the seventh link 363, and both the sixth link 361 and the seventh link 363 move upwards towards the rear lower frame 12.

[0048] Specifically, as the leg adjustment component 30 gradually unfolds from its folded state:

[0049] The rear drive 34 pushes the rear sliding frame 35 forward, the seventh link 363 drives the sixth link 361 to move, and the upper frame B31 rotates under the drive of the roller 362 at the end of the sixth link 361. Since the upper frame B31, upper frame C32, pull rod 33 and rear lower frame 12 form a quadrilateral linkage mechanism, when the upper frame B31 rotates, the quadrilateral linkage mechanism also moves accordingly.

[0050] As a possible example, in this embodiment, the adjustable-angle folding bed 100 also includes a guardrail 40, which is detachably inserted into the upper frame C32. After insertion, the guardrail 40 can be limited by structures such as limiting pins and bolts to improve stability.

[0051] As a possible example, in this embodiment, when the bed base 10 is in the unfolded state, the lower surfaces of the front lower frame 11 and the rear lower frame 12 are used to directly contact the ground, that is, no support legs are provided on the front lower frame 11 and the rear lower frame 12, so as to reduce the overall size.

[0052] As a possible example, in this embodiment, the front lower frame 11 and the rear lower frame 12 are indirectly rotatably connected via an intermediate member 50. The rear end of the front lower frame 11 is hinged to the front end of the intermediate member 50, and the rear end of the intermediate member 50 is hinged to the front end of the rear lower frame 12. When the bed base 10 is in the folded state, the back adjustment assembly 20 is located on the side of the front lower frame 11 opposite to the rear lower frame 12, and the leg adjustment assembly 30 is located on the side of the rear lower frame 12 opposite to the front lower frame 11.

[0053] As a possible example, in this embodiment, when the bed base 10, backrest adjustment assembly 20, and leg adjustment assembly 30 are all folded, the thickness of the adjustable angle folding bed 100 is no more than 100mm (refer to...). Figure 1 , Figure 3 (The thickness here refers to the thickness when the guardrail is not installed.)

[0054] As a possible example, in this embodiment, when the bed base 10 is unfolded, the backrest adjustment assembly 20 is folded, and the leg adjustment assembly 30 is folded, the thickness of the adjustable angle folding bed 100 is no more than 50mm (refer to...). Figure 2 ).

[0055] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An adjustable-angle folding bed, comprising a bed base, the bed base including a front lower frame and a rear lower frame, the rear end of the front lower frame being rotatably connected to the front end of the rear lower frame, characterized in that, It also includes a back adjustment assembly disposed on the front lower frame and a leg adjustment assembly disposed on the rear lower frame; The rear adjustment assembly includes an upper frame A, a front driver, a front sliding bracket, and a front linkage assembly; the rear end of the upper frame A is rotatably connected to the lower front frame; the front driver is mounted on the lower front frame and connected to the front sliding bracket; the front sliding bracket is slidably mounted on the lower front frame to slide along the front-rear direction of the lower front frame under the drive of the front driver; the front linkage assembly is connected to the upper frame A and the front sliding bracket respectively, so as to drive the upper frame A to swing when the front sliding bracket slides. The front linkage assembly includes a first link, a second link, a third link, a fourth link, and a fifth link. The first end of the first link is rotatably connected to the front sliding frame, and the second end of the first link is equipped with a roller. The middle portion of the first link is rotatably connected to the first end of the second link. The second end of the second link is rotatably connected to the first end of the third link. The second end of the third link is rotatably connected to the first end of the fourth link. The second end of the fourth link is rotatably connected to the front lower frame. The first end of the fifth link is rotatably connected to the front sliding frame, and the second end of the fifth link is rotatably connected to the upper frame A. The middle portion of the fifth link is rotatably connected to the middle portion of the third link. The first link is provided with a limiting rivet, and the second link is provided with a groove for abutting against the limiting rivet.

2. The adjustable angle folding bed according to claim 1, characterized in that, The leg adjustment assembly includes an upper frame B, an upper frame C, a pull rod, a rear driver, a rear sliding frame, and a rear connecting rod assembly. The upper frame B, the upper frame C, the pull rod, and the lower rear frame are rotatably connected in sequence to form a quadrilateral linkage mechanism. The rear driver is mounted on the lower rear frame and connected to the rear sliding frame. The rear sliding frame is slidably mounted on the lower rear frame to move along the front-rear direction of the lower rear frame under the drive of the rear driver. The rear connecting rod assembly is connected to the upper frame B and the rear sliding frame respectively to drive the upper frame B to swing when the rear sliding frame slides.

3. The adjustable angle folding bed according to claim 2, characterized in that, The rear linkage assembly includes a sixth linkage, a roller, and a seventh linkage; the first end of the sixth linkage is rotatably connected to the lower rear frame, the roller is rotatably mounted on the second end of the sixth linkage, the roller is in rolling contact with the upper frame B, the first end of the seventh linkage is rotatably connected to the rear sliding frame, and the second end of the seventh linkage is rotatably connected to the middle part of the sixth linkage.

4. The adjustable angle folding bed according to claim 2, characterized in that, It also includes guardrails, which can be detachably inserted into the upper frame C.

5. The adjustable angle folding bed according to claim 1, characterized in that, The lower surfaces of both the front lower frame and the rear lower frame are designed to make direct contact with the ground.

6. The adjustable angle folding bed according to claim 1, characterized in that, The front bottom frame and the rear bottom frame are indirectly rotatably connected through an intermediate component; the rear end of the front bottom frame is hinged to the front end of the intermediate component, and the rear end of the intermediate component is hinged to the front end of the rear bottom frame.

7. The adjustable angle folding bed according to claim 1, characterized in that, When the bed base, the back adjustment assembly, and the leg adjustment assembly are all folded, the thickness of the adjustable angle folding bed is no more than 100mm.

8. The adjustable angle folding bed according to claim 1, characterized in that, When the bed base is unfolded, the back adjustment assembly is folded, and the leg adjustment assembly is folded, the thickness of the adjustable angle folding bed is no more than 50mm.

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