Handrail structure of folding bed

Abstract

The utility model relates to the technical field of folding beds, in particular to a folding bed armrest structure which comprises two symmetrical folding lifting mechanisms, each folding lifting mechanism comprises a blocking rod and a threaded cylinder, each blocking rod is hinged to two symmetrical sliding rods through two symmetrical hinge blocks, and the threaded cylinders are hinged to the sliding rods. The two sliding rods are slidably connected with sliding cylinders, through cooperation of the sliding rods, the sliding cylinders, the threaded rods, the threaded cylinders and the supporting and blocking rods, a handrail form can be rapidly formed or all parts can be rapidly folded and stored, the purpose of convenient folding and storing or supporting and positioning of the device is achieved, the threaded cylinders are rotated left and right to drive the blocking rods to move up and down, and the device is convenient to use. The height of the handrail can be adjusted, the purpose that the height of the handrail is conveniently adjusted through the device is achieved, and the problems that in the prior art, the adjusting angles of most of the handrails of the folding bed are concentrated between 0 degree and 90 degrees, and the requirements of users with different body types cannot be met (for example, the requirement difference of the users with the height of 160 cm and 180 cm for the height of the handrail reaches 15 cm) are solved.

Description

Technical Field

[0001] This utility model relates to the field of folding bed technology, and specifically discloses a folding bed armrest structure. Background Technology

[0002] Folding beds, with their portability and space adaptability, are widely used in scenarios such as temporary home accommodation, office lunch breaks, and medical care. Their folding mechanisms typically employ a composite design of hinges, pivots, and latches, achieving rapid unfolding / storage through the coordinated folding of a multi-segment frame. However, the flexibility of the folding joints can lead to a decrease in bed rigidity, especially prone to wobbling under lateral forces, which is particularly dangerous in medical settings. Statistics show that 68% of elderly patients suffer secondary injuries due to insufficient support when getting up. The armrest structure, through rigid linkages, forms a triangular stabilization system with the bed frame. This serves both as mechanical compensation to enhance the torsional strength of the folding joints and as a highly ergonomically designed 35-45cm auxiliary support surface, optimizing pressure distribution for postoperative patients when getting up by 27%. Thus, while maintaining folding convenience, it overcomes the safety bottleneck of traditional folding beds.

[0003] The adjustment angle of the armrests of existing folding beds is mostly concentrated between 0° and 90°, which cannot meet the needs of users of different body types (for example, the difference in armrest height requirements between a 160cm and a 180cm tall user can be as much as 15cm). Therefore, a folding bed armrest structure is needed to solve this problem. Utility Model Content

[0004] This utility model proposes a folding bed armrest structure. By rotating the threaded cylinder left and right, the threaded rod moves up and down inside the threaded cylinder, and at the same time, the sliding rod slides up and down inside the sliding cylinder, thereby moving the stop bar up and down. This allows for adjustment of the armrest height, solving the problem that the adjustment angle of existing folding bed armrests is mostly concentrated between 0° and 90°, which cannot meet the needs of users of different body types (e.g., the difference in armrest height requirements between a 160cm and a 180cm user can be as much as 15cm).

[0005] This utility model is implemented as follows: a folding bed armrest structure includes two mutually symmetrical folding and lifting mechanisms. Each folding and lifting mechanism includes a stop bar and a threaded cylinder. The stop bar is hinged to two mutually symmetrical sliding rods through two mutually symmetrical hinge blocks. Each of the two sliding rods is slidably connected to a sliding cylinder. A locking and limiting hinge block is fixedly installed at the bottom end of the sliding cylinder.

[0006] A hinge block is fixedly installed at the bottom end of the threaded cylinder, and a threaded rod is threadedly connected to the threaded cylinder. The top end of the threaded rod is hinged to the stop rod through the hinge block.

[0007] As a preferred embodiment of the folding bed armrest structure of this utility model, a disassembly and assembly mechanism is provided below the folding lifting mechanism. The disassembly and assembly mechanism includes an installation strip. The upper surface of the installation strip is fixedly connected to the support seat of the hinge block fixedly installed at the bottom end of the threaded cylinder. The upper surface of the installation strip is fixedly connected to the support seat of the locking and limiting hinge block fixedly installed at the bottom end of the sliding cylinder. A clamping groove is provided on the upper surface of the installation strip.

[0008] As a preferred embodiment of the folding bed armrest structure of this utility model, the front side of the mounting strip has two symmetrical threaded holes, and the inner sidewalls of the two threaded holes are threaded with a first threaded post.

[0009] As a preferred embodiment of the folding bed armrest structure of this utility model, the rear end of the first threaded post is rotatably connected to a top holding plate, and the end of the first threaded post away from the top holding plate is fixedly connected to a rotating plate.

[0010] As a preferred embodiment of the folding bed armrest structure of this utility model, a connecting mechanism is provided at the middle position of the two folding lifting mechanisms. The connecting mechanism includes a prismatic tube, which is fixedly connected to the left side stop bar. An elastic element is fixedly connected inside the prismatic tube, and a sliding plate is fixedly connected to the right end of the elastic element.

[0011] As a preferred embodiment of the folding bed armrest structure of this utility model, the outer surface of the sliding plate is slidably connected to the inner wall of the prismatic tube, and a second threaded post is fixedly connected to the right side of the sliding plate, and a threaded tube is threadedly connected to the threaded surface of the second threaded post.

[0012] As a preferred embodiment of the folding bed armrest structure of this utility model, the threaded tube is rotatably connected to the right-side stop bar, a baffle is fixedly connected to the inner side wall of the prismatic tube, a through hole is opened on the right side of the baffle, and the inner side wall of the through hole is slidably connected to the outer surface of the second threaded column.

[0013] The beneficial effects of this utility model are:

[0014] 1. The armrest structure of this folding bed, through the cooperation of sliding rod, sliding cylinder, threaded rod, threaded cylinder, and support rod, can quickly form an armrest or quickly fold and store the various components, achieving the purpose of convenient folding and storage or support positioning of this device. By rotating the threaded cylinder left and right, the support rod can be moved up and down, which can adjust the height of the armrest, achieving the purpose of convenient armrest height adjustment of this device. This solves the problem that the adjustment angle of the armrest of the existing folding bed is mostly concentrated in °0-90°, which cannot meet the needs of users of different body types (such as the difference of 15cm in the armrest height needs between users with a height of 160cm and 180cm).

[0015] 2. The armrest structure of this folding bed allows for quick assembly and disassembly by inserting the support rod of the folding bed frame into the clamping groove, and then rotating the two rotating plates clockwise. This causes the first threaded post to move towards the end closer to the top holding plate, while simultaneously causing the top holding plate to press against the support rod of the folding bed frame. The reverse operation removes the device, achieving the purpose of quick assembly and disassembly. This solves the problem of the fixed connection between the folding bed frame and the armrest, which is inconvenient for transportation. When the two mutually symmetrical folding and lifting mechanisms of this device form the armrest shape, the second threaded post is squeezed into the interior of the prismatic cylinder by the threaded tube. Then, rotating the threaded tube causes the second threaded post to be threadedly connected to the threaded tube, allowing the second threaded post to enter the interior of the threaded tube. This allows the two mutually symmetrical stop rods to be threadedly connected, increasing the stability of the armrest. Furthermore, disassembling the threaded connection of the two mutually symmetrical stop rods facilitates the folding and storage of the folding bed frame. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is an overall structural diagram of a folding bed armrest structure according to the present invention;

[0018] Figure 2 This is a disassembled structural diagram of the folding lifting mechanism of the armrest structure of a folding bed according to the present invention;

[0019] Figure 3 This is a disassembled structural diagram of a folding bed armrest assembly and disassembly mechanism according to the present invention;

[0020] Figure 4 This is a split structural diagram of the connecting mechanism of the armrest structure of a folding bed according to the present invention.

[0021] The markings in the diagram are as follows: 1. Folding and lifting mechanism; 101. Stop bar; 102. Sliding rod; 103. Sliding cylinder; 104. Threaded rod; 105. Threaded cylinder; 2. Disassembly and assembly mechanism; 201. Mounting strip; 202. Clamping groove; 203. Threaded hole; 204. First threaded post; 205. Top holding plate; 206. Rotating plate; 3. Connecting mechanism; 301. Prismatic cylinder; 302. Through hole; 303. Elastic element; 304. Sliding plate; 305. Second threaded post; 306. Threaded tube; 307. Baffle. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-4 A folding bed armrest structure includes two symmetrical folding and lifting mechanisms 1. Each folding and lifting mechanism 1 includes a stop bar 101 and a threaded cylinder 105. The stop bar 101 is hinged to two symmetrical sliding rods 102 via two symmetrical hinge blocks. Each sliding rod 102 is slidably connected to a sliding cylinder 103. A locking and limiting hinge block is fixedly installed at the bottom end of the sliding cylinder 103. A hinge block is fixedly installed at the bottom end of the threaded cylinder 105. The threaded cylinder 105 is threadedly connected to a threaded rod 104. The top end of the threaded rod 104 is hinged to the stop bar 101 via a hinge block.

[0024] The locking limit hinge block and hinge block mentioned here are existing technologies and will not be described in detail.

[0025] In this embodiment: by moving the stop lever 101 left and right, two symmetrical sliding rods 102, sliding cylinder 103, threaded rod 104, and threaded cylinder 105 jointly support the stop lever 101 to form a handrail. Alternatively, the stop lever 101, sliding rod 102, sliding cylinder 103, threaded rod 104, and threaded cylinder 105 can be folded and stored. When the handrail is in the form of a handrail, the locking and limiting hinge block below the sliding cylinder 103 is controlled to lock and limit the position, thus achieving the purpose of convenient folding and storage or support and positioning of this device. By rotating the threaded cylinder 105 left and right, the threaded rod 104 is driven to move up and down inside the threaded cylinder 105, and the sliding rod 102 is driven to slide up and down inside the sliding cylinder 103, thereby driving the stop lever 101 to move up and down, which can adjust the height of the handrail and achieve the purpose of conveniently adjusting the height of the handrail.

[0026] As a technical optimization of this utility model, a disassembly and assembly mechanism 2 is provided below the folding lifting mechanism 1. The disassembly and assembly mechanism 2 includes an installation strip 201. The upper surface of the installation strip 201 is fixedly connected to the support seat of the hinge block fixedly installed at the bottom end of the threaded cylinder 105. The upper surface of the installation strip 201 is fixedly connected to the support seat of the locking and limiting hinge block fixedly installed at the bottom end of the sliding cylinder 103. A clamping groove 202 is provided on the upper surface of the installation strip 201. Two symmetrical threaded holes 203 are provided on the front side of the installation strip 201. The inner sidewalls of the two threaded holes 203 are threaded with a first threaded post 204. The rear end of the first threaded post 204 is rotatably connected to a top holding plate 205. A rotating plate 206 is fixedly connected to the end of the first threaded post 204 away from the top holding plate 205.

[0027] The clamping grooves 202 inside the two symmetrical disassembly and assembly mechanisms 2 are respectively connected to the frame support rods of the two folding bed boards of the folding bed.

[0028] In this embodiment: by inserting the folding bed frame support rod into the clamping groove 202, and then rotating the two rotating plates 206 clockwise, the first threaded post 204 is moved towards the end close to the top holding plate 205, and the top holding plate 205 is pressed against the support rod of the folding bed frame. The device can be removed by operating in the opposite direction, thus achieving the purpose of quick assembly and disassembly of the device.

[0029] As a technical optimization of this utility model, a connecting mechanism 3 is provided in the middle position of the two folding and lifting mechanisms 1. The connecting mechanism 3 includes a prismatic cylinder 301, which is fixedly connected to the left stop bar 101. An elastic element 303 is fixedly connected inside the prismatic cylinder 301. A sliding plate 304 is fixedly connected to the right end of the elastic element 303. The outer surface of the sliding plate 304 is slidably connected to the inner side wall of the prismatic cylinder 301. A second threaded post 305 is fixedly connected to the right side of the sliding plate 304. A threaded tube 306 is threadedly connected to the threaded surface of the second threaded post 305. The threaded tube 306 is rotatably connected to the right stop bar 101. A baffle 307 is fixedly connected to the inner side wall of the prismatic cylinder 301. A through hole 302 is opened on the right side of the baffle 307. The inner side wall of the through hole 302 is slidably connected to the outer surface of the second threaded post 305.

[0030] The elastic element 303 is preferably made of spring material. After the second threaded post 305 is fully threadedly connected to the threaded tube 306, the sliding plate 304 will support the sliding plate 304.

[0031] In this embodiment: when the two mutually symmetrical folding and lifting mechanisms 1 of this device form the armrest shape, the second threaded post 305 is squeezed into the interior of the prism tube 301 by the threaded tube 306. Then, the threaded tube 306 is rotated to make the second threaded post 305 threadedly connected to the threaded tube 306, thereby making the second threaded post 305 enter the interior of the threaded tube 306. This allows the two mutually symmetrical stop bars 101 to be threadedly connected, increasing the stability of the armrest. Moreover, when the threaded connection of the two mutually symmetrical stop bars 101 is released, it is convenient to fold and store the armrest.

[0032] The working principle and usage process of this utility model are as follows: In use, the folding bed frame support rod is inserted into the clamping groove 202. Then, the two rotating plates 206 are rotated clockwise, causing the first threaded column 204 to move towards the end near the top holding plate 205. Simultaneously, the top holding plate 205 presses against the support rod of the folding bed frame. The device can be disassembled by reversing the operation, achieving quick assembly and disassembly. By moving the stop bar 101 left and right, the two symmetrical sliding rods 102, sliding cylinder 103, threaded rod 104, and threaded cylinder 105 jointly support the stop bar 101, forming a handrail. Alternatively, the stop bar 101, sliding rod 102, sliding cylinder 103, threaded rod 104, and threaded cylinder 105 can be folded and stored. When forming the handrail, the locking and limiting hinge block below the sliding cylinder 103 is controlled to lock and limit the movement, thus enabling the device to be easily disassembled. The purpose of this device is to facilitate folding and storage or support positioning. By rotating the threaded cylinder 105 left and right, the threaded rod 104 moves up and down inside the threaded cylinder 105, and the sliding rod 102 moves up and down inside the sliding cylinder 103, thereby moving the stop bar 101 up and down. This allows for adjustment of the handrail height, achieving the purpose of convenient handrail height adjustment. When the two mutually symmetrical folding and lifting mechanisms 1 of this device form the handrail shape, the second threaded post 305 is squeezed into the interior of the prismatic cylinder 301 by the threaded tube 306. Then, rotating the threaded tube 306 causes the second threaded post 305 to be threadedly connected to the threaded tube 306, thus allowing the second threaded post 305 to enter the interior of the threaded tube 306. This allows the two mutually symmetrical stop bars 101 to be threadedly connected, increasing the stability of the handrail. Furthermore, when the threaded connection of the two mutually symmetrical stop bars 101 is released, it is easy to fold and store the handrail.

[0033] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A folding bed armrest structure, characterized in that: It includes two symmetrical folding and lifting mechanisms (1). The folding and lifting mechanism (1) includes a stop bar (101) and a threaded cylinder (105). The stop bar (101) is hinged to two symmetrical sliding rods (102) through two symmetrical hinge blocks. Both sliding rods (102) are slidably connected to a sliding cylinder (103). A locking and limiting hinge block is fixedly installed at the bottom end of the sliding cylinder (103). A hinge block is fixedly installed at the bottom end of the threaded cylinder (105), and a threaded rod (104) is threadedly connected to the threaded cylinder (105). The top end of the threaded rod (104) is hinged to the stop rod (101) through the hinge block.

2. The folding bed armrest structure according to claim 1, characterized in that: Below the folding lifting mechanism (1) is a disassembly and assembly mechanism (2). The disassembly and assembly mechanism (2) includes an installation strip (201). The upper surface of the installation strip (201) is fixedly connected to the support seat of the hinge block fixedly installed at the bottom end of the threaded cylinder (105). The upper surface of the installation strip (201) is fixedly connected to the support seat of the locking and limiting hinge block fixedly installed at the bottom end of the sliding cylinder (103). The upper surface of the installation strip (201) is provided with a clamping groove (202).

3. The folding bed armrest structure according to claim 2, characterized in that: The front side of the mounting strip (201) has two symmetrical threaded holes (203), and the inner walls of the two threaded holes (203) are threaded with first threaded posts (204).

4. The folding bed armrest structure according to claim 3, characterized in that: The rear end of the first threaded post (204) is rotatably connected to a top support plate (205), and the end of the first threaded post (204) away from the top support plate (205) is fixedly connected to a rotating plate (206).

5. The folding bed armrest structure according to claim 4, characterized in that: A connecting mechanism (3) is provided at the middle position of the two folding lifting mechanisms (1). The connecting mechanism (3) includes a prismatic tube (301), which is fixedly connected to the left stop bar (101). An elastic element (303) is fixedly connected inside the prismatic tube (301), and a sliding plate (304) is fixedly connected to the right end of the elastic element (303).

6. The folding bed armrest structure according to claim 5, characterized in that: The outer surface of the sliding plate (304) is slidably connected to the inner wall of the prismatic cylinder (301), and a second threaded post (305) is fixedly connected to the right side of the sliding plate (304). The threaded surface of the second threaded post (305) is threadedly connected to a threaded tube (306).

7. The folding bed armrest structure according to claim 6, characterized in that: The threaded tube (306) is rotatably connected to the stop bar (101) on the right side. A baffle (307) is fixedly connected to the inner wall of the prismatic tube (301). A through hole (302) is opened on the right side of the baffle (307). The inner wall of the through hole (302) is slidably connected to the outer surface of the second threaded column (305).

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