A four-fold companion bed chair
By using a four-fold structure design and adjustable hinge technology, the problems of inconvenience, large footprint, and non-adjustable backrest of existing three-fold companion beds and chairs have been solved, thereby improving comfort and space utilization efficiency and adapting to diverse resting postures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN ALCHEMY TECH CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-07-07
AI Technical Summary
Existing three-fold companion bed chairs, while meeting the bed length requirements, have an extended seat board that makes it inconvenient to lean back and has poor sitting comfort; after folding, the thickness increases, the footprint is large, and the structure is not compact; the backrest angle is not adjustable, making it difficult to meet diverse resting postures.
It adopts a four-fold structure design, combined with adjustable hinges, staggered folding hinges and multi-level adjustment structure, to achieve flexible adjustment of backrest angle, shorten the length of folding unit, optimize armrest height, and use square tube frame to improve structural compactness.
It improves sitting comfort, reduces the floor space occupied when folded, meets the needs of diverse resting postures, adapts to users of different heights, and makes more efficient use of space.
Smart Images

Figure CN224461372U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hospital care equipment, and in particular relates to a four-fold care bed chair. Background Technology
[0002] In medical care settings, three-fold bed-chairs play an important role, typically used to meet the multi-functional needs of caregivers, such as daily seating, nighttime rest, and temporary storage.
[0003] A search revealed that Chinese Patent CN202477051U discloses a folding chair for companionship, characterized by: a first support frame, the rear of which is hinged to a first support plate; when the first support plate is rotated to a horizontal state, the first support plate engages with the top of the first support frame, and the first support frame supports the first support plate; one end of the first support plate is hinged to one end of a second support plate, and the other end of the second support plate is hinged to one end of a third support plate, with a second support frame installed at the bottom of the third support plate; an armrest is installed on each of the left and right sides of the first support plate, and the armrest is hinged to the first support plate; an armrest stop is provided on each of the left and right sides of the first support frame, and in the unfolded state, the armrest engages with the armrest stop; when folded, the first and second support plates stand upright to form a backrest, while the third support plate remains horizontal as a seat cushion.
[0004] However, the aforementioned folding chairs for caregivers have the following drawbacks in practical applications: the seat board, which is lengthened to meet the length requirements of the bed, makes it difficult for users to lean back effectively when folded into a chair, resulting in poor sitting comfort; the fixed backrest folding design increases its thickness and footprint after folding, making it inconvenient to place in space-constrained scenarios such as wards; the irregular cross-section of the round tube frame results in an uncompacted structure, requiring extra space to be reserved for storage after folding; and the backrest angle is not adjustable, making it difficult to meet diverse resting postures. Utility Model Content
[0005] The purpose of this utility model is to provide a four-fold companion bed chair to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A four-folding companion bed chair includes a folding frame, with side support frames symmetrically installed on both sides of the folding frame. The two side support frames are arranged opposite each other, and several mounting beams are provided between the two side support frames. The mounting beams are provided with pads, and the tops of the pads are supported and installed on the folding frame.
[0008] As a preferred embodiment of this utility model, the folding frame includes a first connecting rod, one end of which is provided with a support frame, and an adjustable hinge structure is provided between the first connecting rod and the support frame. The other end of the first connecting rod is provided with a second connecting rod, and an interlaced folding hinge structure is provided between the first connecting rod and the second connecting rod. The other end of the second connecting rod is provided with a bed end frame.
[0009] As a preferred embodiment of this utility model, the adjustable hinge structure includes an adjustable hinge one and an adjustable hinge two. The adjustable hinge one is connected to the support frame, and the adjustable hinge two is connected to the connecting rod one. The adjustable hinge one and the adjustable hinge two are hinged together. The adjustable hinge one is provided with a pin hole, and the adjustable hinge two is provided with several adjustment holes. The pin hole cooperates with the adjustment holes, and an adjustment pin is inserted into the pin hole.
[0010] As a preferred embodiment of this utility model, the staggered folding hinge structure includes staggered hinge one and staggered hinge two. The staggered hinge one is connected to connecting rod one, and the staggered hinge two is connected to connecting rod two. The staggered hinge one and staggered hinge two are hinged together.
[0011] As a preferred embodiment of the present invention, a front support frame is provided below the support frame, and a one-way hinge structure is provided between the support frame and the front support frame. The one-way hinge structure includes a one-way hinge, one end of a pair of one-way hinges is connected to the support frame, and the other end is hinged to the front support frame.
[0012] As a preferred embodiment of this utility model, a rear support frame is provided below the connecting rod two and the bed end frame. The rear support frame is provided with a two-way hinge structure, which includes a two-way hinge one and a two-way hinge two. The two-way hinge one is connected to the connecting rod two, and the two-way hinge two is connected to the bed end frame. The two-way hinge one and the two-way hinge two are respectively hinged to the rear support frame.
[0013] As a preferred embodiment of this utility model, the side support frame has a T-shaped structure. A support rod is provided below the T-shaped side support frame, and the brake wheel is located at the bottom of the support rod. A crossbar is provided at the top of the pair of support rods, and a connecting rod is provided at the bottom of the pair of support rods. A telescopic post is provided on the crossbar, and the side support frame is movably installed inside the telescopic post. The side support frame has several positioning holes, and the telescopic post has a fixing hole. The positioning holes and fixing holes cooperate with each other, and positioning pins are provided in the positioning holes and fixing holes. The brake wheel is located at the bottom of the side support frame.
[0014] As a preferred embodiment of this utility model, the side support frame is an inverted U-shaped structure, and a connecting rod is connected between the two vertical parts of the inverted U-shaped structure, and a brake wheel is provided at the bottom of the side support frame.
[0015] As a preferred embodiment of this utility model, the bottom of the folding frame is provided with a shelf, and the shelf is provided with a storage box.
[0016] As a preferred embodiment of this utility model, a mattress is laid on the upper surface of the folding frame, and the mattress is a structure of a sponge pad covered with a technical fabric.
[0017] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:
[0018] 1. This four-fold companion bed chair, through its four-fold structure design, shortens the length of a single folding unit and avoids excessive extension of the seat. Compared with existing technologies, it enables users to lean effectively in the chair position, improves sitting comfort, and reduces the floor space and storage space after folding.
[0019] 2. This four-fold companion bed chair, through its adjustable hinge structure and multi-position adjustment design, allows for flexible adjustment of the backrest angle to meet diverse resting posture needs.
[0020] 3. This four-fold companion bed chair features an adjustable design with telescopic posts and side support frames, allowing the armrest height to adapt to users of different heights. It can also be folded up in bed mode without affecting rest. Attached Figure Description
[0021] Figure 1 This is a diagram showing the bed layout of the inverted U-shaped armrest model of this utility model;
[0022] Figure 2 This is a structural diagram of the overall framework of this utility model;
[0023] Figure 3 This is a diagram showing the state of a seat with an inverted U-shaped armrest according to this utility model;
[0024] Figure 4 This is a diagram showing the bed configuration of the side support frame of this utility model.
[0025] Figure 5 This is a diagram showing the seat configuration of the side support frame of this utility model.
[0026] Figure 6 This is a partial enlarged view of the adjustable hinge structure of this utility model;
[0027] Figure 7 This is a partial enlarged view of the staggered folding hinge structure of this utility model;
[0028] Figure 8 This is a partial enlarged view of the unidirectional hinge structure of this utility model;
[0029] Figure 9 This is a partial enlarged view of the bidirectional hinge structure of this utility model;
[0030] Figure 10 This is a half-sectional view of the telescopic pile of this utility model.
[0031] Figure reference numerals: 1-Folding frame, 2-Side support frame, 3-Padded block, 4-Mounting beam, 5-Connecting rod one, 6-Backrest frame, 7-Adjustable hinge structure, 701-Adjustable hinge one, 702-Adjustable hinge two, 703-Pin hole, 704-Adjusting hole, 705-Adjusting pin, 8-Connecting rod two, 9-Staggered folding hinge structure, 901-Staggered hinge one, 902-Staggered hinge two, 10-Leg end frame, 11-Front support frame, 12-One-way hinge structure, 1201-One-way hinge, 13-Rear support frame, 14-Two-way hinge structure, 1401-Two-way hinge one, 1402-Two-way hinge two, 15-Brake wheel, 16-Support rod, 17-Horizontal frame, 18-Connecting rod, 19-Telescopic post, 201-Positioning hole, Positioning pin 202, 20-Fixing hole, 21-Storage box, 22-Shelf, 23-Mattress. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0033] This utility model provides a technical solution:
[0034] A four-fold companion bed chair, such as Figures 1-3 As shown, it includes a folding frame 1, with side support frames 2 symmetrically installed on both sides of the folding frame 1. The two side support frames 2 are arranged opposite each other, and several mounting beams 4 are provided between the two side support frames 2. The mounting beams 4 are provided with pads 3, and the top of the pads 3 are supported and installed with the folding frame 1.
[0035] like Figure 2 As shown, the folding frame 1 includes a connecting rod 1 5, a support frame 6 at one end of the connecting rod 1 5, an adjustable hinge structure 7 between the connecting rod 1 5 and the support frame 6, a connecting rod 2 8 at the other end of the connecting rod 1 5, an interlaced folding hinge structure 9 between the connecting rod 1 5 and the connecting rod 2 8, and a bed end frame 10 at the other end of the connecting rod 2 8.
[0036] like Figure 6As shown, the adjustable hinge structure 7 includes an adjustable hinge one 701 and an adjustable hinge two 702. The adjustable hinge one 701 is connected to the support frame 6, and the adjustable hinge two 702 is bolted to the connecting rod one 5. The adjustable hinge one 701 and the adjustable hinge two 702 are hinged together. The adjustable hinge one 701 is provided with a pin hole 703, and the adjustable hinge two 702 is provided with several adjustment holes 704. The pin hole 703 cooperates with the adjustment holes 704, and an adjustment pin 705 is inserted into the pin hole 703.
[0037] like Figure 7 As shown, the staggered folding hinge structure 9 includes staggered hinge one 901 and staggered hinge two 902. Staggered hinge one 901 is bolted to connecting rod one 5, and staggered hinge two 902 is bolted to connecting rod two 8. Staggered hinge one 901 and staggered hinge two 902 are hinged together.
[0038] like Figure 8 As shown, a front support frame 11 is provided below the support frame 6. A one-way hinge structure 12 is provided between the support frame 6 and the front support frame 11. The one-way hinge structure 12 includes a one-way hinge 1201. One end of a pair of one-way hinges 1201 is connected to the support frame 6, and the other end is hinged to the front support frame 11.
[0039] like Figure 9 As shown, a rear support frame 13 is provided below the connecting rod 2 8 and the bed end frame 10. The rear support frame 13 is provided with a two-way hinge structure 14. The two-way hinge structure 14 includes a two-way hinge 1 1401 and a two-way hinge 2 1402. The two-way hinge 1 1401 is connected to the connecting rod 2 8, and the two-way hinge 2 1402 is connected to the bed end frame 10. The two-way hinge 1 1401 and the two-way hinge 2 1402 are respectively hinged to the rear support frame 13.
[0040] like Figure 1 As shown, the side support frame 2 has a T-shaped structure. A support rod 16 is provided below the T-shaped side support frame 2, and a brake wheel 15 is provided at the bottom of the support rod 16. A crossbar 17 is provided at the top of the pair of support rods 16, and a connecting rod 18 is provided at the bottom of the pair of support rods 16. A telescopic post 19 is provided on the crossbar 17, and the side support frame 2 is movably installed inside the telescopic post 19. The side support frame 2 has several positioning holes 201, and the telescopic post 19 has a fixing hole 20. The positioning holes 201 and the fixing holes 20 are matched. Positioning pins 202 are provided in the positioning holes 201 and the fixing holes 20. A brake wheel 15 is provided at the bottom of the side support frame 2.
[0041] like Figure 4 , Figure 5 , Figure 10 As shown, the side support frame 2 has an inverted U-shaped structure, and a connecting rod 18 is connected between the two vertical parts of the inverted U-shaped structure. A brake wheel 15 is provided at the bottom of the side support frame 2.
[0042] like Figure 1 , Figure 3 As shown, the bottom of the folding rack 1 is provided with a shelf 22, and the shelf 221 is provided with a storage box 21.
[0043] like Figure 4 As shown, a mattress 23 is laid on the upper surface of the folding frame 1. The mattress 23 is a structure of a sponge pad covered with a technical fabric.
[0044] Users can easily move the bed using the brake wheels 15 at the bottom, making it suitable for adjusting its position within the ward. The bottom shelf 22 can hold the storage box 21 for convenient storage of personal items. All frame and connecting rod structures are made of 2 cm thick square tubing, while existing technology uses round tubing, resulting in superior mechanical performance. Each side of the frame and the length and width of the connecting rods are 50 cm, occupying an area of 0.25 square meters. In contrast, existing companion beds, when folded into chairs, have a seat size of 70 cm × 60 cm, occupying an area of 0.42 square meters, making more efficient use of space.
[0045] When the user needs the bed for overnight rest during the caregiving period, push the adjusting pin 705 out of the pin hole 703 and the adjusting hole 704 to unlock the adjustable hinge structure 7. According to the flatness requirements of the bed surface, rotate the backrest 6 to a horizontal state and flush with the bed surface, insert the adjusting pin 705 into the corresponding adjusting hole 704 to fix it, so that the backrest 6 and the connecting rod 5 form a plane.
[0046] The folding structure is manually unfolded by pushing the connecting rod 8 outwards. Through the relative rotation of the interlaced hinges 901 and 902 of the interlaced folding hinge structure 9, the connecting rod 5 and connecting rod 8 extend in a straight line. At this time, the front support frame 11 unfolds from the bottom of the backrest frame 6 via a one-way hinge 1201 and lands vertically, providing support for the head area; the rear support frame 13 unfolds to both sides via two-way hinges 1401 and 1402, supporting the bed end frame 10 to form a horizontal bed surface. This ensures the bed's stability when bearing weight. At this point, the four-fold structure is fully unfolded into a temporary bed for caregivers to lie down and rest.
[0047] When the user needs a backrest, the method of using the folded backrest is to lift the front support frame 11 upwards so that it folds and fits against the bottom of the backrest frame 6 via the one-way hinge 1201; at the same time, push the rear support frame 13 inwards, and fold the bed end frame 10 below the connecting rod 2 8 via the two-way hinge 1 1401 and the two-way hinge 2 1402 to form a support structure.
[0048] Pull connecting rod 2 8 towards connecting rod 1 5 and fold it. Utilize the hinge rotation of the staggered folding hinge structure 9 to make connecting rod 1 5 perpendicular to connecting rod 2 8. At this time, the backrest 6 maintains its tilt angle through the adjustable hinge structure 7. Different positions can be selected in the adjustment hole 704 by adjusting the pin 705 to form a chair back.
[0049] Example 1
[0050] The side support frame 2 has a T-shaped structure. A support rod 16 is provided below the T-shaped side support frame 2. The brake wheel 15 is located at the bottom of the support rod 16. A crossbar 17 is provided at the top of the pair of support rods 16. A connecting rod 18 is provided at the bottom of the pair of support rods 16. A telescopic post 19 is provided on the crossbar 17. The side support frame 2 is movably installed inside the telescopic post 19. The side support frame 2 has several positioning holes 201. The telescopic post 19 has a fixing hole 20. The positioning holes 201 and the fixing holes 20 cooperate with each other. Positioning pins 202 are provided in the positioning holes 201 and the fixing holes 20. The brake wheel 15 is located at the bottom of the side support frame 2.
[0051] In chair mode, adjust the height of the side support frame 20: pull out the positioning pin 202, slide the side support frame 20 upwards within the telescopic post 19 to a specific position, and insert the positioning pin 202 to secure it. At this time, the caregiver can relax their arms using the side support frame 20. In bed mode, the side support frame 20 can be slid downwards within the telescopic post 19 to a specific position (below the bed surface) and secured with the positioning pin 202, without affecting the comfort of placing legs on the edge of the bed.
[0052] Example 2
[0053] The side support frame 2 has an inverted U-shaped structure, and a connecting rod 18 is connected between the two vertical parts of the inverted U-shaped side support frame 2. A brake wheel 15 is provided at the bottom of the side support frame 2.
[0054] The non-adjustable inverted U-shaped armrests 21 also provide hand relaxation when the chair is in the reclining position.
[0055] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A four-fold companion bed chair, characterized in that: Includes a folding frame (1), with side support frames (2) symmetrically installed on both sides of the folding frame (1). The two side support frames (2) are arranged opposite each other, and several mounting beams (4) are provided between the two side support frames (2). The mounting beams (4) are provided with pads (3), and the top of the pads (3) is supported and installed with the folding frame (1). The folding frame (1) includes a connecting rod one (5), a support frame (6) is provided at one end of the connecting rod one (5), an adjustable hinge structure (7) is provided between the connecting rod one (5) and the support frame (6), a connecting rod two (8) is provided at the other end of the connecting rod one (5), an interlaced folding hinge structure (9) is provided between the connecting rod one (5) and the connecting rod two (8), and a bed end frame (10) is provided at the other end of the connecting rod two (8). The adjustable hinge structure (7) includes an adjustable hinge one (701) and an adjustable hinge two (702). The adjustable hinge one (701) is connected to the support frame (6), and the adjustable hinge two (702) is connected to the connecting rod one (5). The adjustable hinge one (701) and the adjustable hinge two (702) are hinged together. The adjustable hinge one (701) is provided with a pin hole (703), and the adjustable hinge two (702) is provided with several adjustment holes (704). The pin hole (703) cooperates with the adjustment holes (704), and an adjustment pin (705) is inserted into the pin hole (703).
2. The four-fold companion bed chair according to claim 1, characterized in that: The staggered folding hinge structure (9) includes staggered hinge one (901) and staggered hinge two (902). The staggered hinge one (901) is connected to connecting rod one (5), and the staggered hinge two (902) is connected to connecting rod two (8). The staggered hinge one (901) and staggered hinge two (902) are hinged together.
3. A four-fold companion bed chair according to claim 1, characterized in that: A front support frame (11) is provided below the support frame (6). A one-way hinge structure (12) is provided between the support frame (6) and the front support frame (11). The one-way hinge structure (12) includes a one-way hinge (1201). One end of a pair of one-way hinges (1201) is connected to the support frame (6), and the other end is hinged to the front support frame (11).
4. A four-fold companion bed chair according to claim 2, characterized in that: A rear support frame (13) is provided below the connecting rod 2 (8) and the bed end frame (10). The rear support frame (13) is provided with a two-way hinge structure (14). The two-way hinge structure (14) includes a two-way hinge 1 (1401) and a two-way hinge 2 (1402). The two-way hinge 1 (1401) is connected to the connecting rod 2 (8), and the two-way hinge 2 (1402) is connected to the bed end frame (10). The two-way hinge 1 (1401) and the two-way hinge 2 (1402) are respectively hinged to the rear support frame (13).
5. A four-fold companion bed chair according to claim 1, characterized in that: The side support frame (2) is a T-shaped structure. The T-shaped side support frame (2) is provided with a support rod (16) below. A brake wheel (15) is provided at the bottom of the support rod (16). A cross frame (17) is provided at the top of a pair of support rods (16). A connecting rod (18) is provided at the bottom of a pair of support rods (16). A telescopic post (19) is provided on the cross frame (17). The side support frame (2) is movably provided in the telescopic post (19). The side support frame (2) is provided with several positioning holes (201). The telescopic post (19) is provided with a fixing hole (20). The positioning hole (201) and the fixing hole (20) are matched. A positioning pin (202) is provided in the positioning hole (201) and the fixing hole (20). A brake wheel (15) is provided at the bottom of the side support frame (2).
6. A four-fold companion bed chair according to claim 1, characterized in that: The side support frame (2) is an inverted U-shaped structure, and a connecting rod (18) is connected between the two vertical parts of the inverted U-shaped structure. A brake wheel (15) is provided at the bottom of the side support frame (2).
7. A four-fold companion bed chair according to claim 1, characterized in that: The bottom of the folding frame (1) is provided with a shelf (22), and the shelf (22) is provided with a storage box (21).
8. A four-fold companion bed chair according to claim 1, characterized in that: A mattress (23) is laid on the upper surface of the folding frame (1), and the mattress (23) is a structure of a sponge pad covered with a technical cloth.